Rename GrGpuGL -> GrGLGpu

src/gpu/gl/GrGpuGL.cpp

Index: src/gpu/gl/GrGpuGL.cpp
diff --git a/src/gpu/gl/GrGpuGL.cpp b/src/gpu/gl/GrGpuGL.cpp
deleted file mode 100644
index 96af8af47fc999ed11cc334c1c203e74e2c8f367..0000000000000000000000000000000000000000
--- a/src/gpu/gl/GrGpuGL.cpp
+++ /dev/null
@@ -1,2759 +0,0 @@
-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-
-#include "GrGpuGL.h"
-#include "GrGLStencilBuffer.h"
-#include "GrGLTextureRenderTarget.h"
-#include "GrGpuResourceCacheAccess.h"
-#include "GrOptDrawState.h"
-#include "GrSurfacePriv.h"
-#include "GrTemplates.h"
-#include "GrTexturePriv.h"
-#include "GrTypes.h"
-#include "SkStrokeRec.h"
-#include "SkTemplates.h"
-
-#define GL_CALL(X) GR_GL_CALL(this->glInterface(), X)
-#define GL_CALL_RET(RET, X) GR_GL_CALL_RET(this->glInterface(), RET, X)
-
-#define SKIP_CACHE_CHECK    true
-
-#if GR_GL_CHECK_ALLOC_WITH_GET_ERROR
-    #define CLEAR_ERROR_BEFORE_ALLOC(iface)   GrGLClearErr(iface)
-    #define GL_ALLOC_CALL(iface, call)        GR_GL_CALL_NOERRCHECK(iface, call)
-    #define CHECK_ALLOC_ERROR(iface)          GR_GL_GET_ERROR(iface)
-#else
-    #define CLEAR_ERROR_BEFORE_ALLOC(iface)
-    #define GL_ALLOC_CALL(iface, call)        GR_GL_CALL(iface, call)
-    #define CHECK_ALLOC_ERROR(iface)          GR_GL_NO_ERROR
-#endif
-
-
-///////////////////////////////////////////////////////////////////////////////
-
-
-static const GrGLenum gXfermodeCoeff2Blend[] = {
-    GR_GL_ZERO,
-    GR_GL_ONE,
-    GR_GL_SRC_COLOR,
-    GR_GL_ONE_MINUS_SRC_COLOR,
-    GR_GL_DST_COLOR,
-    GR_GL_ONE_MINUS_DST_COLOR,
-    GR_GL_SRC_ALPHA,
-    GR_GL_ONE_MINUS_SRC_ALPHA,
-    GR_GL_DST_ALPHA,
-    GR_GL_ONE_MINUS_DST_ALPHA,
-    GR_GL_CONSTANT_COLOR,
-    GR_GL_ONE_MINUS_CONSTANT_COLOR,
-    GR_GL_CONSTANT_ALPHA,
-    GR_GL_ONE_MINUS_CONSTANT_ALPHA,
-
-    // extended blend coeffs
-    GR_GL_SRC1_COLOR,
-    GR_GL_ONE_MINUS_SRC1_COLOR,
-    GR_GL_SRC1_ALPHA,
-    GR_GL_ONE_MINUS_SRC1_ALPHA,
-};
-
-bool GrGLGpu::BlendCoeffReferencesConstant(GrBlendCoeff coeff) {
-    static const bool gCoeffReferencesBlendConst[] = {
-        false,
-        false,
-        false,
-        false,
-        false,
-        false,
-        false,
-        false,
-        false,
-        false,
-        true,
-        true,
-        true,
-        true,
-
-        // extended blend coeffs
-        false,
-        false,
-        false,
-        false,
-    };
-    return gCoeffReferencesBlendConst[coeff];
-    GR_STATIC_ASSERT(kTotalGrBlendCoeffCount ==
-                     SK_ARRAY_COUNT(gCoeffReferencesBlendConst));
-
-    GR_STATIC_ASSERT(0 == kZero_GrBlendCoeff);
-    GR_STATIC_ASSERT(1 == kOne_GrBlendCoeff);
-    GR_STATIC_ASSERT(2 == kSC_GrBlendCoeff);
-    GR_STATIC_ASSERT(3 == kISC_GrBlendCoeff);
-    GR_STATIC_ASSERT(4 == kDC_GrBlendCoeff);
-    GR_STATIC_ASSERT(5 == kIDC_GrBlendCoeff);
-    GR_STATIC_ASSERT(6 == kSA_GrBlendCoeff);
-    GR_STATIC_ASSERT(7 == kISA_GrBlendCoeff);
-    GR_STATIC_ASSERT(8 == kDA_GrBlendCoeff);
-    GR_STATIC_ASSERT(9 == kIDA_GrBlendCoeff);
-    GR_STATIC_ASSERT(10 == kConstC_GrBlendCoeff);
-    GR_STATIC_ASSERT(11 == kIConstC_GrBlendCoeff);
-    GR_STATIC_ASSERT(12 == kConstA_GrBlendCoeff);
-    GR_STATIC_ASSERT(13 == kIConstA_GrBlendCoeff);
-
-    GR_STATIC_ASSERT(14 == kS2C_GrBlendCoeff);
-    GR_STATIC_ASSERT(15 == kIS2C_GrBlendCoeff);
-    GR_STATIC_ASSERT(16 == kS2A_GrBlendCoeff);
-    GR_STATIC_ASSERT(17 == kIS2A_GrBlendCoeff);
-
-    // assertion for gXfermodeCoeff2Blend have to be in GrGpu scope
-    GR_STATIC_ASSERT(kTotalGrBlendCoeffCount ==
-                     SK_ARRAY_COUNT(gXfermodeCoeff2Blend));
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-static bool gPrintStartupSpew;
-
-GrGLGpu::GrGLGpu(const GrGLContext& ctx, GrContext* context)
-    : GrGpu(context)
-    , fGLContext(ctx) {
-
-    SkASSERT(ctx.isInitialized());
-    fCaps.reset(SkRef(ctx.caps()));
-
-    fHWBoundTextureUniqueIDs.reset(this->glCaps().maxFragmentTextureUnits());
-
-    GrGLClearErr(fGLContext.interface());
-    if (gPrintStartupSpew) {
-        const GrGLubyte* vendor;
-        const GrGLubyte* renderer;
-        const GrGLubyte* version;
-        GL_CALL_RET(vendor, GetString(GR_GL_VENDOR));
-        GL_CALL_RET(renderer, GetString(GR_GL_RENDERER));
-        GL_CALL_RET(version, GetString(GR_GL_VERSION));
-        SkDebugf("------------------------- create GrGLGpu %p --------------\n",
-                 this);
-        SkDebugf("------ VENDOR %s\n", vendor);
-        SkDebugf("------ RENDERER %s\n", renderer);
-        SkDebugf("------ VERSION %s\n",  version);
-        SkDebugf("------ EXTENSIONS\n");
-        ctx.extensions().print();
-        SkDebugf("\n");
-        SkDebugf(this->glCaps().dump().c_str());
-    }
-
-    fProgramCache = SkNEW_ARGS(ProgramCache, (this));
-
-    SkASSERT(this->glCaps().maxVertexAttributes() >= GrGeometryProcessor::kMaxVertexAttribs);
-
-    fLastSuccessfulStencilFmtIdx = 0;
-    fHWProgramID = 0;
-
-    if (this->glCaps().pathRenderingSupport()) {
-        fPathRendering.reset(new GrGLPathRendering(this));
-    }
-}
-
-GrGLGpu::~GrGLGpu() {
-    if (0 != fHWProgramID) {
-        // detach the current program so there is no confusion on OpenGL's part
-        // that we want it to be deleted
-        SkASSERT(fHWProgramID == fCurrentProgram->programID());
-        GL_CALL(UseProgram(0));
-    }
-
-    delete fProgramCache;
-}
-
-void GrGLGpu::contextAbandoned() {
-    INHERITED::contextAbandoned();
-    fProgramCache->abandon();
-    fHWProgramID = 0;
-    if (this->glCaps().pathRenderingSupport()) {
-        this->glPathRendering()->abandonGpuResources();
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-GrPixelConfig GrGLGpu::preferredReadPixelsConfig(GrPixelConfig readConfig,
-                                                 GrPixelConfig surfaceConfig) const {
-    if (GR_GL_RGBA_8888_PIXEL_OPS_SLOW && kRGBA_8888_GrPixelConfig == readConfig) {
-        return kBGRA_8888_GrPixelConfig;
-    } else if (this->glContext().isMesa() &&
-               GrBytesPerPixel(readConfig) == 4 &&
-               GrPixelConfigSwapRAndB(readConfig) == surfaceConfig) {
-        // Mesa 3D takes a slow path on when reading back  BGRA from an RGBA surface and vice-versa.
-        // Perhaps this should be guarded by some compiletime or runtime check.
-        return surfaceConfig;
-    } else if (readConfig == kBGRA_8888_GrPixelConfig
-            && !this->glCaps().readPixelsSupported(
-                this->glInterface(),
-                GR_GL_BGRA,
-                GR_GL_UNSIGNED_BYTE,
-                surfaceConfig
-            )) {
-        return kRGBA_8888_GrPixelConfig;
-    } else {
-        return readConfig;
-    }
-}
-
-GrPixelConfig GrGLGpu::preferredWritePixelsConfig(GrPixelConfig writeConfig,
-                                                  GrPixelConfig surfaceConfig) const {
-    if (GR_GL_RGBA_8888_PIXEL_OPS_SLOW && kRGBA_8888_GrPixelConfig == writeConfig) {
-        return kBGRA_8888_GrPixelConfig;
-    } else {
-        return writeConfig;
-    }
-}
-
-bool GrGLGpu::canWriteTexturePixels(const GrTexture* texture, GrPixelConfig srcConfig) const {
-    if (kIndex_8_GrPixelConfig == srcConfig || kIndex_8_GrPixelConfig == texture->config()) {
-        return false;
-    }
-    if (srcConfig != texture->config() && kGLES_GrGLStandard == this->glStandard()) {
-        // In general ES2 requires the internal format of the texture and the format of the src
-        // pixels to match. However, It may or may not be possible to upload BGRA data to a RGBA
-        // texture. It depends upon which extension added BGRA. The Apple extension allows it
-        // (BGRA's internal format is RGBA) while the EXT extension does not (BGRA is its own
-        // internal format).
-        if (this->glCaps().isConfigTexturable(kBGRA_8888_GrPixelConfig) &&
-            !this->glCaps().bgraIsInternalFormat() &&
-            kBGRA_8888_GrPixelConfig == srcConfig &&
-            kRGBA_8888_GrPixelConfig == texture->config()) {
-            return true;
-        } else {
-            return false;
-        }
-    } else {
-        return true;
-    }
-}
-
-bool GrGLGpu::fullReadPixelsIsFasterThanPartial() const {
-    return SkToBool(GR_GL_FULL_READPIXELS_FASTER_THAN_PARTIAL);
-}
-
-void GrGLGpu::onResetContext(uint32_t resetBits) {
-    // we don't use the zb at all
-    if (resetBits & kMisc_GrGLBackendState) {
-        GL_CALL(Disable(GR_GL_DEPTH_TEST));
-        GL_CALL(DepthMask(GR_GL_FALSE));
-
-        fHWDrawFace = GrDrawState::kInvalid_DrawFace;
-        fHWDitherEnabled = kUnknown_TriState;
-
-        if (kGL_GrGLStandard == this->glStandard()) {
-            // Desktop-only state that we never change
-            if (!this->glCaps().isCoreProfile()) {
-                GL_CALL(Disable(GR_GL_POINT_SMOOTH));
-                GL_CALL(Disable(GR_GL_LINE_SMOOTH));
-                GL_CALL(Disable(GR_GL_POLYGON_SMOOTH));
-                GL_CALL(Disable(GR_GL_POLYGON_STIPPLE));
-                GL_CALL(Disable(GR_GL_COLOR_LOGIC_OP));
-                GL_CALL(Disable(GR_GL_INDEX_LOGIC_OP));
-            }
-            // The windows NVIDIA driver has GL_ARB_imaging in the extension string when using a
-            // core profile. This seems like a bug since the core spec removes any mention of
-            // GL_ARB_imaging.
-            if (this->glCaps().imagingSupport() && !this->glCaps().isCoreProfile()) {
-                GL_CALL(Disable(GR_GL_COLOR_TABLE));
-            }
-            GL_CALL(Disable(GR_GL_POLYGON_OFFSET_FILL));
-            // Since ES doesn't support glPointSize at all we always use the VS to
-            // set the point size
-            GL_CALL(Enable(GR_GL_VERTEX_PROGRAM_POINT_SIZE));
-
-            // We should set glPolygonMode(FRONT_AND_BACK,FILL) here, too. It isn't
-            // currently part of our gl interface. There are probably others as
-            // well.
-        }
-
-        if (kGLES_GrGLStandard == this->glStandard() &&
-                fGLContext.hasExtension("GL_ARM_shader_framebuffer_fetch")) {
-            // The arm extension requires specifically enabling MSAA fetching per sample.
-            // On some devices this may have a perf hit.  Also multiple render targets are disabled
-            GL_CALL(Enable(GR_GL_FETCH_PER_SAMPLE_ARM));
-        }
-        fHWWriteToColor = kUnknown_TriState;
-        // we only ever use lines in hairline mode
-        GL_CALL(LineWidth(1));
-    }
-
-    if (resetBits & kMSAAEnable_GrGLBackendState) {
-        fMSAAEnabled = kUnknown_TriState;
-    }
-
-    fHWActiveTextureUnitIdx = -1; // invalid
-
-    if (resetBits & kTextureBinding_GrGLBackendState) {
-        for (int s = 0; s < fHWBoundTextureUniqueIDs.count(); ++s) {
-            fHWBoundTextureUniqueIDs[s] = SK_InvalidUniqueID;
-        }
-    }
-
-    if (resetBits & kBlend_GrGLBackendState) {
-        fHWBlendState.invalidate();
-    }
-
-    if (resetBits & kView_GrGLBackendState) {
-        fHWScissorSettings.invalidate();
-        fHWViewport.invalidate();
-    }
-
-    if (resetBits & kStencil_GrGLBackendState) {
-        fHWStencilSettings.invalidate();
-        fHWStencilTestEnabled = kUnknown_TriState;
-    }
-
-    // Vertex
-    if (resetBits & kVertex_GrGLBackendState) {
-        fHWGeometryState.invalidate();
-    }
-
-    if (resetBits & kRenderTarget_GrGLBackendState) {
-        fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID;
-    }
-
-    if (resetBits & kPathRendering_GrGLBackendState) {
-        if (this->caps()->pathRenderingSupport()) {
-            this->glPathRendering()->resetContext();
-        }
-    }
-
-    // we assume these values
-    if (resetBits & kPixelStore_GrGLBackendState) {
-        if (this->glCaps().unpackRowLengthSupport()) {
-            GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0));
-        }
-        if (this->glCaps().packRowLengthSupport()) {
-            GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0));
-        }
-        if (this->glCaps().unpackFlipYSupport()) {
-            GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_FALSE));
-        }
-        if (this->glCaps().packFlipYSupport()) {
-            GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, GR_GL_FALSE));
-        }
-    }
-
-    if (resetBits & kProgram_GrGLBackendState) {
-        fHWProgramID = 0;
-    }
-}
-
-namespace {
-
-GrSurfaceOrigin resolve_origin(GrSurfaceOrigin origin, bool renderTarget) {
-    // By default, GrRenderTargets are GL's normal orientation so that they
-    // can be drawn to by the outside world without the client having
-    // to render upside down.
-    if (kDefault_GrSurfaceOrigin == origin) {
-        return renderTarget ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin;
-    } else {
-        return origin;
-    }
-}
-
-}
-
-GrTexture* GrGLGpu::onWrapBackendTexture(const GrBackendTextureDesc& desc) {
-    if (!this->configToGLFormats(desc.fConfig, false, NULL, NULL, NULL)) {
-        return NULL;
-    }
-
-    if (0 == desc.fTextureHandle) {
-        return NULL;
-    }
-
-    int maxSize = this->caps()->maxTextureSize();
-    if (desc.fWidth > maxSize || desc.fHeight > maxSize) {
-        return NULL;
-    }
-
-    GrGLTexture::IDDesc idDesc;
-    GrSurfaceDesc surfDesc;
-
-    idDesc.fTextureID = static_cast<GrGLuint>(desc.fTextureHandle);
-    idDesc.fIsWrapped = true;
-
-    // next line relies on GrBackendTextureDesc's flags matching GrTexture's
-    surfDesc.fFlags = (GrSurfaceFlags) desc.fFlags;
-    surfDesc.fWidth = desc.fWidth;
-    surfDesc.fHeight = desc.fHeight;
-    surfDesc.fConfig = desc.fConfig;
-    surfDesc.fSampleCnt = desc.fSampleCnt;
-    bool renderTarget = SkToBool(desc.fFlags & kRenderTarget_GrBackendTextureFlag);
-    // FIXME:  this should be calling resolve_origin(), but Chrome code is currently
-    // assuming the old behaviour, which is that backend textures are always
-    // BottomLeft, even for non-RT's.  Once Chrome is fixed, change this to:
-    // glTexDesc.fOrigin = resolve_origin(desc.fOrigin, renderTarget);
-    if (kDefault_GrSurfaceOrigin == desc.fOrigin) {
-        surfDesc.fOrigin = kBottomLeft_GrSurfaceOrigin;
-    } else {
-        surfDesc.fOrigin = desc.fOrigin;
-    }
-
-    GrGLTexture* texture = NULL;
-    if (renderTarget) {
-        GrGLRenderTarget::IDDesc rtIDDesc;
-        if (!this->createRenderTargetObjects(surfDesc, idDesc.fTextureID, &rtIDDesc)) {
-            return NULL;
-        }
-        texture = SkNEW_ARGS(GrGLTextureRenderTarget, (this, surfDesc, idDesc, rtIDDesc));
-    } else {
-        texture = SkNEW_ARGS(GrGLTexture, (this, surfDesc, idDesc));
-    }
-    if (NULL == texture) {
-        return NULL;
-    }
-
-    return texture;
-}
-
-GrRenderTarget* GrGLGpu::onWrapBackendRenderTarget(const GrBackendRenderTargetDesc& wrapDesc) {
-    GrGLRenderTarget::IDDesc idDesc;
-    idDesc.fRTFBOID = static_cast<GrGLuint>(wrapDesc.fRenderTargetHandle);
-    idDesc.fMSColorRenderbufferID = 0;
-    idDesc.fTexFBOID = GrGLRenderTarget::kUnresolvableFBOID;
-    idDesc.fIsWrapped = true;
-
-    GrSurfaceDesc desc;
-    desc.fConfig = wrapDesc.fConfig;
-    desc.fFlags = kCheckAllocation_GrSurfaceFlag;
-    desc.fWidth = wrapDesc.fWidth;
-    desc.fHeight = wrapDesc.fHeight;
-    desc.fSampleCnt = wrapDesc.fSampleCnt;
-    desc.fOrigin = resolve_origin(wrapDesc.fOrigin, true);
-
-    GrRenderTarget* tgt = SkNEW_ARGS(GrGLRenderTarget, (this, desc, idDesc));
-    if (wrapDesc.fStencilBits) {
-        GrGLStencilBuffer::Format format;
-        format.fInternalFormat = GrGLStencilBuffer::kUnknownInternalFormat;
-        format.fPacked = false;
-        format.fStencilBits = wrapDesc.fStencilBits;
-        format.fTotalBits = wrapDesc.fStencilBits;
-        static const bool kIsSBWrapped = false;
-        GrGLStencilBuffer* sb = SkNEW_ARGS(GrGLStencilBuffer,
-                                           (this,
-                                            kIsSBWrapped,
-                                            0,
-                                            desc.fWidth,
-                                            desc.fHeight,
-                                            desc.fSampleCnt,
-                                            format));
-        tgt->setStencilBuffer(sb);
-        sb->unref();
-    }
-    return tgt;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-bool GrGLGpu::onWriteTexturePixels(GrTexture* texture,
-                                   int left, int top, int width, int height,
-                                   GrPixelConfig config, const void* buffer,
-                                   size_t rowBytes) {
-    if (NULL == buffer) {
-        return false;
-    }
-    GrGLTexture* glTex = static_cast<GrGLTexture*>(texture);
-
-    this->setScratchTextureUnit();
-    GL_CALL(BindTexture(GR_GL_TEXTURE_2D, glTex->textureID()));
-
-    bool success = false;
-    if (GrPixelConfigIsCompressed(glTex->desc().fConfig)) {
-        // We check that config == desc.fConfig in GrGLGpu::canWriteTexturePixels()
-        SkASSERT(config == glTex->desc().fConfig);
-        success = this->uploadCompressedTexData(glTex->desc(), buffer, false, left, top, width,
-                                                height);
-    } else {
-        success = this->uploadTexData(glTex->desc(), false, left, top, width, height, config,
-                                      buffer, rowBytes);
-    }
-
-    if (success) {
-        texture->texturePriv().dirtyMipMaps(true);
-        return true;
-    }
-
-    return false;
-}
-
-static bool adjust_pixel_ops_params(int surfaceWidth,
-                                    int surfaceHeight,
-                                    size_t bpp,
-                                    int* left, int* top, int* width, int* height,
-                                    const void** data,
-                                    size_t* rowBytes) {
-    if (!*rowBytes) {
-        *rowBytes = *width * bpp;
-    }
-
-    SkIRect subRect = SkIRect::MakeXYWH(*left, *top, *width, *height);
-    SkIRect bounds = SkIRect::MakeWH(surfaceWidth, surfaceHeight);
-
-    if (!subRect.intersect(bounds)) {
-        return false;
-    }
-    *data = reinterpret_cast<const void*>(reinterpret_cast<intptr_t>(*data) +
-          (subRect.fTop - *top) * *rowBytes + (subRect.fLeft - *left) * bpp);
-
-    *left = subRect.fLeft;
-    *top = subRect.fTop;
-    *width = subRect.width();
-    *height = subRect.height();
-    return true;
-}
-
-static inline GrGLenum check_alloc_error(const GrSurfaceDesc& desc,
-                                         const GrGLInterface* interface) {
-    if (SkToBool(desc.fFlags & kCheckAllocation_GrSurfaceFlag)) {
-        return GR_GL_GET_ERROR(interface);
-    } else {
-        return CHECK_ALLOC_ERROR(interface);
-    }
-}
-
-bool GrGLGpu::uploadTexData(const GrSurfaceDesc& desc,
-                            bool isNewTexture,
-                            int left, int top, int width, int height,
-                            GrPixelConfig dataConfig,
-                            const void* data,
-                            size_t rowBytes) {
-    SkASSERT(data || isNewTexture);
-
-    // If we're uploading compressed data then we should be using uploadCompressedTexData
-    SkASSERT(!GrPixelConfigIsCompressed(dataConfig));
-
-    size_t bpp = GrBytesPerPixel(dataConfig);
-    if (!adjust_pixel_ops_params(desc.fWidth, desc.fHeight, bpp, &left, &top,
-                                 &width, &height, &data, &rowBytes)) {
-        return false;
-    }
-    size_t trimRowBytes = width * bpp;
-
-    // in case we need a temporary, trimmed copy of the src pixels
-    GrAutoMalloc<128 * 128> tempStorage;
-
-    // We currently lazily create MIPMAPs when the we see a draw with
-    // GrTextureParams::kMipMap_FilterMode. Using texture storage requires that the
-    // MIP levels are all created when the texture is created. So for now we don't use
-    // texture storage.
-    bool useTexStorage = false &&
-                         isNewTexture &&
-                         this->glCaps().texStorageSupport();
-
-    if (useTexStorage && kGL_GrGLStandard == this->glStandard()) {
-        // 565 is not a sized internal format on desktop GL. So on desktop with
-        // 565 we always use an unsized internal format to let the system pick
-        // the best sized format to convert the 565 data to. Since TexStorage
-        // only allows sized internal formats we will instead use TexImage2D.
-        useTexStorage = desc.fConfig != kRGB_565_GrPixelConfig;
-    }
-
-    GrGLenum internalFormat = 0x0; // suppress warning
-    GrGLenum externalFormat = 0x0; // suppress warning
-    GrGLenum externalType = 0x0;   // suppress warning
-
-    // glTexStorage requires sized internal formats on both desktop and ES. ES2 requires an unsized
-    // format for glTexImage, unlike ES3 and desktop.
-    bool useSizedFormat = useTexStorage;
-    if (kGL_GrGLStandard == this->glStandard() ||
-        (this->glVersion() >= GR_GL_VER(3, 0) &&
-         // ES3 only works with sized BGRA8 format if "GL_APPLE_texture_format_BGRA8888" enabled
-         (kBGRA_8888_GrPixelConfig != dataConfig || !this->glCaps().bgraIsInternalFormat())))  {
-        useSizedFormat = true;
-    }
-
-    if (!this->configToGLFormats(dataConfig, useSizedFormat, &internalFormat,
-                                 &externalFormat, &externalType)) {
-        return false;
-    }
-
-    /*
-     *  check whether to allocate a temporary buffer for flipping y or
-     *  because our srcData has extra bytes past each row. If so, we need
-     *  to trim those off here, since GL ES may not let us specify
-     *  GL_UNPACK_ROW_LENGTH.
-     */
-    bool restoreGLRowLength = false;
-    bool swFlipY = false;
-    bool glFlipY = false;
-    if (data) {
-        if (kBottomLeft_GrSurfaceOrigin == desc.fOrigin) {
-            if (this->glCaps().unpackFlipYSupport()) {
-                glFlipY = true;
-            } else {
-                swFlipY = true;
-            }
-        }
-        if (this->glCaps().unpackRowLengthSupport() && !swFlipY) {
-            // can't use this for flipping, only non-neg values allowed. :(
-            if (rowBytes != trimRowBytes) {
-                GrGLint rowLength = static_cast<GrGLint>(rowBytes / bpp);
-                GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, rowLength));
-                restoreGLRowLength = true;
-            }
-        } else {
-            if (trimRowBytes != rowBytes || swFlipY) {
-                // copy data into our new storage, skipping the trailing bytes
-                size_t trimSize = height * trimRowBytes;
-                const char* src = (const char*)data;
-                if (swFlipY) {
-                    src += (height - 1) * rowBytes;
-                }
-                char* dst = (char*)tempStorage.reset(trimSize);
-                for (int y = 0; y < height; y++) {
-                    memcpy(dst, src, trimRowBytes);
-                    if (swFlipY) {
-                        src -= rowBytes;
-                    } else {
-                        src += rowBytes;
-                    }
-                    dst += trimRowBytes;
-                }
-                // now point data to our copied version
-                data = tempStorage.get();
-            }
-        }
-        if (glFlipY) {
-            GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_TRUE));
-        }
-        GL_CALL(PixelStorei(GR_GL_UNPACK_ALIGNMENT,
-              static_cast<GrGLint>(GrUnpackAlignment(dataConfig))));
-    }
-    bool succeeded = true;
-    if (isNewTexture &&
-        0 == left && 0 == top &&
-        desc.fWidth == width && desc.fHeight == height) {
-        CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
-        if (useTexStorage) {
-            // We never resize  or change formats of textures.
-            GL_ALLOC_CALL(this->glInterface(),
-                          TexStorage2D(GR_GL_TEXTURE_2D,
-                                       1, // levels
-                                       internalFormat,
-                                       desc.fWidth, desc.fHeight));
-        } else {
-            GL_ALLOC_CALL(this->glInterface(),
-                          TexImage2D(GR_GL_TEXTURE_2D,
-                                     0, // level
-                                     internalFormat,
-                                     desc.fWidth, desc.fHeight,
-                                     0, // border
-                                     externalFormat, externalType,
-                                     data));
-        }
-        GrGLenum error = check_alloc_error(desc, this->glInterface());
-        if (error != GR_GL_NO_ERROR) {
-            succeeded = false;
-        } else {
-            // if we have data and we used TexStorage to create the texture, we
-            // now upload with TexSubImage.
-            if (data && useTexStorage) {
-                GL_CALL(TexSubImage2D(GR_GL_TEXTURE_2D,
-                                      0, // level
-                                      left, top,
-                                      width, height,
-                                      externalFormat, externalType,
-                                      data));
-            }
-        }
-    } else {
-        if (swFlipY || glFlipY) {
-            top = desc.fHeight - (top + height);
-        }
-        GL_CALL(TexSubImage2D(GR_GL_TEXTURE_2D,
-                              0, // level
-                              left, top,
-                              width, height,
-                              externalFormat, externalType, data));
-    }
-
-    if (restoreGLRowLength) {
-        SkASSERT(this->glCaps().unpackRowLengthSupport());
-        GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0));
-    }
-    if (glFlipY) {
-        GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_FALSE));
-    }
-    return succeeded;
-}
-
-// TODO: This function is using a lot of wonky semantics like, if width == -1
-// then set width = desc.fWdith ... blah. A better way to do it might be to
-// create a CompressedTexData struct that takes a desc/ptr and figures out
-// the proper upload semantics. Then users can construct this function how they
-// see fit if they want to go against the "standard" way to do it.
-bool GrGLGpu::uploadCompressedTexData(const GrSurfaceDesc& desc,
-                                      const void* data,
-                                      bool isNewTexture,
-                                      int left, int top, int width, int height) {
-    SkASSERT(data || isNewTexture);
-
-    // No support for software flip y, yet...
-    SkASSERT(kBottomLeft_GrSurfaceOrigin != desc.fOrigin);
-
-    if (-1 == width) {
-        width = desc.fWidth;
-    }
-#ifdef SK_DEBUG
-    else {
-        SkASSERT(width <= desc.fWidth);
-    }
-#endif
-
-    if (-1 == height) {
-        height = desc.fHeight;
-    }
-#ifdef SK_DEBUG
-    else {
-        SkASSERT(height <= desc.fHeight);
-    }
-#endif
-
-    // Make sure that the width and height that we pass to OpenGL
-    // is a multiple of the block size.
-    size_t dataSize = GrCompressedFormatDataSize(desc.fConfig, width, height);
-
-    // We only need the internal format for compressed 2D textures.
-    GrGLenum internalFormat = 0;
-    if (!this->configToGLFormats(desc.fConfig, false, &internalFormat, NULL, NULL)) {
-        return false;
-    }
-
-    if (isNewTexture) {
-        CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
-        GL_ALLOC_CALL(this->glInterface(),
-                      CompressedTexImage2D(GR_GL_TEXTURE_2D,
-                                           0, // level
-                                           internalFormat,
-                                           width, height,
-                                           0, // border
-                                           SkToInt(dataSize),
-                                           data));
-        GrGLenum error = check_alloc_error(desc, this->glInterface());
-        if (error != GR_GL_NO_ERROR) {
-            return false;
-        }
-    } else {
-        // Paletted textures can't be updated.
-        if (GR_GL_PALETTE8_RGBA8 == internalFormat) {
-            return false;
-        }
-        GL_CALL(CompressedTexSubImage2D(GR_GL_TEXTURE_2D,
-                                        0, // level
-                                        left, top,
-                                        width, height,
-                                        internalFormat,
-                                        SkToInt(dataSize),
-                                        data));
-    }
-
-    return true;
-}
-
-static bool renderbuffer_storage_msaa(GrGLContext& ctx,
-                                      int sampleCount,
-                                      GrGLenum format,
-                                      int width, int height) {
-    CLEAR_ERROR_BEFORE_ALLOC(ctx.interface());
-    SkASSERT(GrGLCaps::kNone_MSFBOType != ctx.caps()->msFBOType());
-    switch (ctx.caps()->msFBOType()) {
-        case GrGLCaps::kDesktop_ARB_MSFBOType:
-        case GrGLCaps::kDesktop_EXT_MSFBOType:
-        case GrGLCaps::kES_3_0_MSFBOType:
-            GL_ALLOC_CALL(ctx.interface(),
-                            RenderbufferStorageMultisample(GR_GL_RENDERBUFFER,
-                                                            sampleCount,
-                                                            format,
-                                                            width, height));
-            break;
-        case GrGLCaps::kES_Apple_MSFBOType:
-            GL_ALLOC_CALL(ctx.interface(),
-                            RenderbufferStorageMultisampleES2APPLE(GR_GL_RENDERBUFFER,
-                                                                    sampleCount,
-                                                                    format,
-                                                                    width, height));
-            break;
-        case GrGLCaps::kES_EXT_MsToTexture_MSFBOType:
-        case GrGLCaps::kES_IMG_MsToTexture_MSFBOType:
-            GL_ALLOC_CALL(ctx.interface(),
-                            RenderbufferStorageMultisampleES2EXT(GR_GL_RENDERBUFFER,
-                                                                sampleCount,
-                                                                format,
-                                                                width, height));
-            break;
-        case GrGLCaps::kNone_MSFBOType:
-            SkFAIL("Shouldn't be here if we don't support multisampled renderbuffers.");
-            break;
-    }
-    return (GR_GL_NO_ERROR == CHECK_ALLOC_ERROR(ctx.interface()));;
-}
-
-bool GrGLGpu::createRenderTargetObjects(const GrSurfaceDesc& desc, GrGLuint texID,
-                                        GrGLRenderTarget::IDDesc* idDesc) {
-    idDesc->fMSColorRenderbufferID = 0;
-    idDesc->fRTFBOID = 0;
-    idDesc->fTexFBOID = 0;
-    idDesc->fIsWrapped = false;
-
-    GrGLenum status;
-
-    GrGLenum msColorFormat = 0; // suppress warning
-
-    if (desc.fSampleCnt > 0 && GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType()) {
-        goto FAILED;
-    }
-
-    GL_CALL(GenFramebuffers(1, &idDesc->fTexFBOID));
-    if (!idDesc->fTexFBOID) {
-        goto FAILED;
-    }
-
-
-    // If we are using multisampling we will create two FBOS. We render to one and then resolve to
-    // the texture bound to the other. The exception is the IMG multisample extension. With this
-    // extension the texture is multisampled when rendered to and then auto-resolves it when it is
-    // rendered from.
-    if (desc.fSampleCnt > 0 && this->glCaps().usesMSAARenderBuffers()) {
-        GL_CALL(GenFramebuffers(1, &idDesc->fRTFBOID));
-        GL_CALL(GenRenderbuffers(1, &idDesc->fMSColorRenderbufferID));
-        if (!idDesc->fRTFBOID ||
-            !idDesc->fMSColorRenderbufferID ||
-            !this->configToGLFormats(desc.fConfig,
-                                     // ES2 and ES3 require sized internal formats for rb storage.
-                                     kGLES_GrGLStandard == this->glStandard(),
-                                     &msColorFormat,
-                                     NULL,
-                                     NULL)) {
-            goto FAILED;
-        }
-    } else {
-        idDesc->fRTFBOID = idDesc->fTexFBOID;
-    }
-
-    // below here we may bind the FBO
-    fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID;
-    if (idDesc->fRTFBOID != idDesc->fTexFBOID) {
-        SkASSERT(desc.fSampleCnt > 0);
-        GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, idDesc->fMSColorRenderbufferID));
-        if (!renderbuffer_storage_msaa(fGLContext,
-                                       desc.fSampleCnt,
-                                       msColorFormat,
-                                       desc.fWidth, desc.fHeight)) {
-            goto FAILED;
-        }
-        fGPUStats.incRenderTargetBinds();
-        GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, idDesc->fRTFBOID));
-        GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
-                                      GR_GL_COLOR_ATTACHMENT0,
-                                      GR_GL_RENDERBUFFER,
-                                      idDesc->fMSColorRenderbufferID));
-        if ((desc.fFlags & kCheckAllocation_GrSurfaceFlag) ||
-            !this->glCaps().isConfigVerifiedColorAttachment(desc.fConfig)) {
-            GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
-            if (status != GR_GL_FRAMEBUFFER_COMPLETE) {
-                goto FAILED;
-            }
-            fGLContext.caps()->markConfigAsValidColorAttachment(desc.fConfig);
-        }
-    }
-    fGPUStats.incRenderTargetBinds();
-    GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, idDesc->fTexFBOID));
-
-    if (this->glCaps().usesImplicitMSAAResolve() && desc.fSampleCnt > 0) {
-        GL_CALL(FramebufferTexture2DMultisample(GR_GL_FRAMEBUFFER,
-                                                GR_GL_COLOR_ATTACHMENT0,
-                                                GR_GL_TEXTURE_2D,
-                                                texID, 0, desc.fSampleCnt));
-    } else {
-        GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER,
-                                     GR_GL_COLOR_ATTACHMENT0,
-                                     GR_GL_TEXTURE_2D,
-                                     texID, 0));
-    }
-    if ((desc.fFlags & kCheckAllocation_GrSurfaceFlag) ||
-        !this->glCaps().isConfigVerifiedColorAttachment(desc.fConfig)) {
-        GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
-        if (status != GR_GL_FRAMEBUFFER_COMPLETE) {
-            goto FAILED;
-        }
-        fGLContext.caps()->markConfigAsValidColorAttachment(desc.fConfig);
-    }
-
-    return true;
-
-FAILED:
-    if (idDesc->fMSColorRenderbufferID) {
-        GL_CALL(DeleteRenderbuffers(1, &idDesc->fMSColorRenderbufferID));
-    }
-    if (idDesc->fRTFBOID != idDesc->fTexFBOID) {
-        GL_CALL(DeleteFramebuffers(1, &idDesc->fRTFBOID));
-    }
-    if (idDesc->fTexFBOID) {
-        GL_CALL(DeleteFramebuffers(1, &idDesc->fTexFBOID));
-    }
-    return false;
-}
-
-// good to set a break-point here to know when createTexture fails
-static GrTexture* return_null_texture() {
-//    SkDEBUGFAIL("null texture");
-    return NULL;
-}
-
-#if 0 && defined(SK_DEBUG)
-static size_t as_size_t(int x) {
-    return x;
-}
-#endif
-
-GrTexture* GrGLGpu::onCreateTexture(const GrSurfaceDesc& origDesc,
-                                    const void* srcData,
-                                    size_t rowBytes) {
-
-    GrSurfaceDesc desc = origDesc;
-    GrGLRenderTarget::IDDesc rtIDDesc;
-
-    // Attempt to catch un- or wrongly initialized sample counts;
-    SkASSERT(desc.fSampleCnt >= 0 && desc.fSampleCnt <= 64);
-    // We fail if the MSAA was requested and is not available.
-    if (GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType() && desc.fSampleCnt) {
-        //SkDebugf("MSAA RT requested but not supported on this platform.");
-        return return_null_texture();
-    }
-
-    bool renderTarget = SkToBool(desc.fFlags & kRenderTarget_GrSurfaceFlag);
-
-    // If the sample count exceeds the max then we clamp it.
-    desc.fSampleCnt = SkTMin(desc.fSampleCnt, this->caps()->maxSampleCount());
-    desc.fOrigin = resolve_origin(desc.fOrigin, renderTarget);
-
-    rtIDDesc.fMSColorRenderbufferID = 0;
-    rtIDDesc.fRTFBOID = 0;
-    rtIDDesc.fTexFBOID = 0;
-    rtIDDesc.fIsWrapped = false;
-
-    if (GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType() && desc.fSampleCnt) {
-        //SkDebugf("MSAA RT requested but not supported on this platform.");
-        return return_null_texture();
-    }
-
-    if (renderTarget) {
-        int maxRTSize = this->caps()->maxRenderTargetSize();
-        if (desc.fWidth > maxRTSize || desc.fHeight > maxRTSize) {
-            return return_null_texture();
-        }
-    } else {
-        int maxSize = this->caps()->maxTextureSize();
-        if (desc.fWidth > maxSize || desc.fHeight > maxSize) {
-            return return_null_texture();
-        }
-    }
-
-    GrGLTexture::IDDesc idDesc;
-    GL_CALL(GenTextures(1, &idDesc.fTextureID));
-    idDesc.fIsWrapped = false;
-
-    if (!idDesc.fTextureID) {
-        return return_null_texture();
-    }
-
-    this->setScratchTextureUnit();
-    GL_CALL(BindTexture(GR_GL_TEXTURE_2D, idDesc.fTextureID));
-
-    if (renderTarget && this->glCaps().textureUsageSupport()) {
-        // provides a hint about how this texture will be used
-        GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                              GR_GL_TEXTURE_USAGE,
-                              GR_GL_FRAMEBUFFER_ATTACHMENT));
-    }
-
-    // Some drivers like to know filter/wrap before seeing glTexImage2D. Some
-    // drivers have a bug where an FBO won't be complete if it includes a
-    // texture that is not mipmap complete (considering the filter in use).
-    GrGLTexture::TexParams initialTexParams;
-    // we only set a subset here so invalidate first
-    initialTexParams.invalidate();
-    initialTexParams.fMinFilter = GR_GL_NEAREST;
-    initialTexParams.fMagFilter = GR_GL_NEAREST;
-    initialTexParams.fWrapS = GR_GL_CLAMP_TO_EDGE;
-    initialTexParams.fWrapT = GR_GL_CLAMP_TO_EDGE;
-    GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                          GR_GL_TEXTURE_MAG_FILTER,
-                          initialTexParams.fMagFilter));
-    GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                          GR_GL_TEXTURE_MIN_FILTER,
-                          initialTexParams.fMinFilter));
-    GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                          GR_GL_TEXTURE_WRAP_S,
-                          initialTexParams.fWrapS));
-    GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                          GR_GL_TEXTURE_WRAP_T,
-                          initialTexParams.fWrapT));
-    if (!this->uploadTexData(desc, true, 0, 0,
-                             desc.fWidth, desc.fHeight,
-                             desc.fConfig, srcData, rowBytes)) {
-        GL_CALL(DeleteTextures(1, &idDesc.fTextureID));
-        return return_null_texture();
-    }
-
-    GrGLTexture* tex;
-    if (renderTarget) {
-        // unbind the texture from the texture unit before binding it to the frame buffer
-        GL_CALL(BindTexture(GR_GL_TEXTURE_2D, 0));
-
-        if (!this->createRenderTargetObjects(desc,  idDesc.fTextureID, &rtIDDesc)) {
-            GL_CALL(DeleteTextures(1, &idDesc.fTextureID));
-            return return_null_texture();
-        }
-        tex = SkNEW_ARGS(GrGLTextureRenderTarget, (this, desc, idDesc, rtIDDesc));
-    } else {
-        tex = SkNEW_ARGS(GrGLTexture, (this, desc, idDesc));
-    }
-    tex->setCachedTexParams(initialTexParams, this->getResetTimestamp());
-#ifdef TRACE_TEXTURE_CREATION
-    SkDebugf("--- new texture [%d] size=(%d %d) config=%d\n",
-             glTexDesc.fTextureID, desc.fWidth, desc.fHeight, desc.fConfig);
-#endif
-    return tex;
-}
-
-GrTexture* GrGLGpu::onCreateCompressedTexture(const GrSurfaceDesc& origDesc, const void* srcData) {
-
-    if(SkToBool(origDesc.fFlags & kRenderTarget_GrSurfaceFlag) || origDesc.fSampleCnt > 0) {
-        return return_null_texture();
-    }
-
-    // Make sure that we're not flipping Y.
-    GrSurfaceOrigin texOrigin = resolve_origin(origDesc.fOrigin, false);
-    if (kBottomLeft_GrSurfaceOrigin == texOrigin) {
-        return return_null_texture();
-    }
-    GrSurfaceDesc desc = origDesc;
-    desc.fOrigin = texOrigin;
-
-    int maxSize = this->caps()->maxTextureSize();
-    if (desc.fWidth > maxSize || desc.fHeight > maxSize) {
-        return return_null_texture();
-    }
-
-    GrGLTexture::IDDesc idDesc;
-    GL_CALL(GenTextures(1, &idDesc.fTextureID));
-    idDesc.fIsWrapped = false;
-
-    if (!idDesc.fTextureID) {
-        return return_null_texture();
-    }
-
-    this->setScratchTextureUnit();
-    GL_CALL(BindTexture(GR_GL_TEXTURE_2D, idDesc.fTextureID));
-
-    // Some drivers like to know filter/wrap before seeing glTexImage2D. Some
-    // drivers have a bug where an FBO won't be complete if it includes a
-    // texture that is not mipmap complete (considering the filter in use).
-    GrGLTexture::TexParams initialTexParams;
-    // we only set a subset here so invalidate first
-    initialTexParams.invalidate();
-    initialTexParams.fMinFilter = GR_GL_NEAREST;
-    initialTexParams.fMagFilter = GR_GL_NEAREST;
-    initialTexParams.fWrapS = GR_GL_CLAMP_TO_EDGE;
-    initialTexParams.fWrapT = GR_GL_CLAMP_TO_EDGE;
-    GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                          GR_GL_TEXTURE_MAG_FILTER,
-                          initialTexParams.fMagFilter));
-    GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                          GR_GL_TEXTURE_MIN_FILTER,
-                          initialTexParams.fMinFilter));
-    GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                          GR_GL_TEXTURE_WRAP_S,
-                          initialTexParams.fWrapS));
-    GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                          GR_GL_TEXTURE_WRAP_T,
-                          initialTexParams.fWrapT));
-
-    if (!this->uploadCompressedTexData(desc, srcData)) {
-        GL_CALL(DeleteTextures(1, &idDesc.fTextureID));
-        return return_null_texture();
-    }
-
-    GrGLTexture* tex;
-    tex = SkNEW_ARGS(GrGLTexture, (this, desc, idDesc));
-    tex->setCachedTexParams(initialTexParams, this->getResetTimestamp());
-#ifdef TRACE_TEXTURE_CREATION
-    SkDebugf("--- new compressed texture [%d] size=(%d %d) config=%d\n",
-             glTexDesc.fTextureID, desc.fWidth, desc.fHeight, desc.fConfig);
-#endif
-    return tex;
-}
-
-namespace {
-
-const GrGLuint kUnknownBitCount = GrGLStencilBuffer::kUnknownBitCount;
-
-void inline get_stencil_rb_sizes(const GrGLInterface* gl,
-                                 GrGLStencilBuffer::Format* format) {
-
-    // we shouldn't ever know one size and not the other
-    SkASSERT((kUnknownBitCount == format->fStencilBits) ==
-             (kUnknownBitCount == format->fTotalBits));
-    if (kUnknownBitCount == format->fStencilBits) {
-        GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER,
-                                         GR_GL_RENDERBUFFER_STENCIL_SIZE,
-                                         (GrGLint*)&format->fStencilBits);
-        if (format->fPacked) {
-            GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER,
-                                             GR_GL_RENDERBUFFER_DEPTH_SIZE,
-                                             (GrGLint*)&format->fTotalBits);
-            format->fTotalBits += format->fStencilBits;
-        } else {
-            format->fTotalBits = format->fStencilBits;
-        }
-    }
-}
-}
-
-bool GrGLGpu::createStencilBufferForRenderTarget(GrRenderTarget* rt, int width, int height) {
-
-    // All internally created RTs are also textures. We don't create
-    // SBs for a client's standalone RT (that is a RT that isn't also a texture).
-    SkASSERT(rt->asTexture());
-    SkASSERT(width >= rt->width());
-    SkASSERT(height >= rt->height());
-
-    int samples = rt->numSamples();
-    GrGLuint sbID = 0;
-
-    int stencilFmtCnt = this->glCaps().stencilFormats().count();
-    for (int i = 0; i < stencilFmtCnt; ++i) {
-        if (!sbID) {
-            GL_CALL(GenRenderbuffers(1, &sbID));
-        }
-        if (!sbID) {
-            return false;
-        }
-        GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, sbID));
-        // we start with the last stencil format that succeeded in hopes
-        // that we won't go through this loop more than once after the
-        // first (painful) stencil creation.
-        int sIdx = (i + fLastSuccessfulStencilFmtIdx) % stencilFmtCnt;
-        const GrGLCaps::StencilFormat& sFmt = this->glCaps().stencilFormats()[sIdx];
-        CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
-        // we do this "if" so that we don't call the multisample
-        // version on a GL that doesn't have an MSAA extension.
-        bool created;
-        if (samples > 0) {
-            created = renderbuffer_storage_msaa(fGLContext,
-                                                samples,
-                                                sFmt.fInternalFormat,
-                                                width, height);
-        } else {
-            GL_ALLOC_CALL(this->glInterface(), RenderbufferStorage(GR_GL_RENDERBUFFER,
-                                                                   sFmt.fInternalFormat,
-                                                                   width, height));
-            created = (GR_GL_NO_ERROR == check_alloc_error(rt->desc(), this->glInterface()));
-        }
-        if (created) {
-            // After sized formats we attempt an unsized format and take
-            // whatever sizes GL gives us. In that case we query for the size.
-            GrGLStencilBuffer::Format format = sFmt;
-            get_stencil_rb_sizes(this->glInterface(), &format);
-            static const bool kIsWrapped = false;
-            SkAutoTUnref<GrStencilBuffer> sb(SkNEW_ARGS(GrGLStencilBuffer,
-                                                  (this, kIsWrapped, sbID, width, height,
-                                                  samples, format)));
-            if (this->attachStencilBufferToRenderTarget(sb, rt)) {
-                fLastSuccessfulStencilFmtIdx = sIdx;
-                rt->setStencilBuffer(sb);
-                return true;
-            }
-            // Remove the scratch key from this resource so we don't grab it from the cache ever
-            // again.
-            sb->cacheAccess().removeScratchKey();
-            // Set this to 0 since we handed the valid ID off to the failed stencil buffer resource.
-            sbID = 0; 
-        }
-    }
-    GL_CALL(DeleteRenderbuffers(1, &sbID));
-    return false;
-}
-
-bool GrGLGpu::attachStencilBufferToRenderTarget(GrStencilBuffer* sb, GrRenderTarget* rt) {
-    GrGLRenderTarget* glrt = static_cast<GrGLRenderTarget*>(rt);
-
-    GrGLuint fbo = glrt->renderFBOID();
-
-    if (NULL == sb) {
-        if (rt->getStencilBuffer()) {
-            GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
-                                            GR_GL_STENCIL_ATTACHMENT,
-                                            GR_GL_RENDERBUFFER, 0));
-            GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
-                                            GR_GL_DEPTH_ATTACHMENT,
-                                            GR_GL_RENDERBUFFER, 0));
-#ifdef SK_DEBUG
-            GrGLenum status;
-            GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
-            SkASSERT(GR_GL_FRAMEBUFFER_COMPLETE == status);
-#endif
-        }
-        return true;
-    } else {
-        GrGLStencilBuffer* glsb = static_cast<GrGLStencilBuffer*>(sb);
-        GrGLuint rb = glsb->renderbufferID();
-
-        fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID;
-        fGPUStats.incRenderTargetBinds();
-        GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, fbo));
-        GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
-                                        GR_GL_STENCIL_ATTACHMENT,
-                                        GR_GL_RENDERBUFFER, rb));
-        if (glsb->format().fPacked) {
-            GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
-                                            GR_GL_DEPTH_ATTACHMENT,
-                                            GR_GL_RENDERBUFFER, rb));
-        } else {
-            GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
-                                            GR_GL_DEPTH_ATTACHMENT,
-                                            GR_GL_RENDERBUFFER, 0));
-        }
-
-        GrGLenum status;
-        if (!this->glCaps().isColorConfigAndStencilFormatVerified(rt->config(), glsb->format())) {
-            GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
-            if (status != GR_GL_FRAMEBUFFER_COMPLETE) {
-                GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
-                                              GR_GL_STENCIL_ATTACHMENT,
-                                              GR_GL_RENDERBUFFER, 0));
-                if (glsb->format().fPacked) {
-                    GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
-                                                  GR_GL_DEPTH_ATTACHMENT,
-                                                  GR_GL_RENDERBUFFER, 0));
-                }
-                return false;
-            } else {
-                fGLContext.caps()->markColorConfigAndStencilFormatAsVerified(
-                    rt->config(),
-                    glsb->format());
-            }
-        }
-        return true;
-    }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-GrVertexBuffer* GrGLGpu::onCreateVertexBuffer(size_t size, bool dynamic) {
-    GrGLVertexBuffer::Desc desc;
-    desc.fDynamic = dynamic;
-    desc.fSizeInBytes = size;
-    desc.fIsWrapped = false;
-
-    if (this->glCaps().useNonVBOVertexAndIndexDynamicData() && desc.fDynamic) {
-        desc.fID = 0;
-        GrGLVertexBuffer* vertexBuffer = SkNEW_ARGS(GrGLVertexBuffer, (this, desc));
-        return vertexBuffer;
-    } else {
-        GL_CALL(GenBuffers(1, &desc.fID));
-        if (desc.fID) {
-            fHWGeometryState.setVertexBufferID(this, desc.fID);
-            CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
-            // make sure driver can allocate memory for this buffer
-            GL_ALLOC_CALL(this->glInterface(),
-                          BufferData(GR_GL_ARRAY_BUFFER,
-                                     (GrGLsizeiptr) desc.fSizeInBytes,
-                                     NULL,   // data ptr
-                                     desc.fDynamic ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW));
-            if (CHECK_ALLOC_ERROR(this->glInterface()) != GR_GL_NO_ERROR) {
-                GL_CALL(DeleteBuffers(1, &desc.fID));
-                this->notifyVertexBufferDelete(desc.fID);
-                return NULL;
-            }
-            GrGLVertexBuffer* vertexBuffer = SkNEW_ARGS(GrGLVertexBuffer, (this, desc));
-            return vertexBuffer;
-        }
-        return NULL;
-    }
-}
-
-GrIndexBuffer* GrGLGpu::onCreateIndexBuffer(size_t size, bool dynamic) {
-    GrGLIndexBuffer::Desc desc;
-    desc.fDynamic = dynamic;
-    desc.fSizeInBytes = size;
-    desc.fIsWrapped = false;
-
-    if (this->glCaps().useNonVBOVertexAndIndexDynamicData() && desc.fDynamic) {
-        desc.fID = 0;
-        GrIndexBuffer* indexBuffer = SkNEW_ARGS(GrGLIndexBuffer, (this, desc));
-        return indexBuffer;
-    } else {
-        GL_CALL(GenBuffers(1, &desc.fID));
-        if (desc.fID) {
-            fHWGeometryState.setIndexBufferIDOnDefaultVertexArray(this, desc.fID);
-            CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
-            // make sure driver can allocate memory for this buffer
-            GL_ALLOC_CALL(this->glInterface(),
-                          BufferData(GR_GL_ELEMENT_ARRAY_BUFFER,
-                                     (GrGLsizeiptr) desc.fSizeInBytes,
-                                     NULL,  // data ptr
-                                     desc.fDynamic ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW));
-            if (CHECK_ALLOC_ERROR(this->glInterface()) != GR_GL_NO_ERROR) {
-                GL_CALL(DeleteBuffers(1, &desc.fID));
-                this->notifyIndexBufferDelete(desc.fID);
-                return NULL;
-            }
-            GrIndexBuffer* indexBuffer = SkNEW_ARGS(GrGLIndexBuffer, (this, desc));
-            return indexBuffer;
-        }
-        return NULL;
-    }
-}
-
-void GrGLGpu::flushScissor(const GrScissorState& scissorState,
-                           const GrGLIRect& rtViewport,
-                           GrSurfaceOrigin rtOrigin) {
-    if (scissorState.fEnabled) {
-        GrGLIRect scissor;
-        scissor.setRelativeTo(rtViewport,
-                              scissorState.fRect.fLeft,
-                              scissorState.fRect.fTop,
-                              scissorState.fRect.width(),
-                              scissorState.fRect.height(),
-                              rtOrigin);
-        // if the scissor fully contains the viewport then we fall through and
-        // disable the scissor test.
-        if (!scissor.contains(rtViewport)) {
-            if (fHWScissorSettings.fRect != scissor) {
-                scissor.pushToGLScissor(this->glInterface());
-                fHWScissorSettings.fRect = scissor;
-            }
-            if (kYes_TriState != fHWScissorSettings.fEnabled) {
-                GL_CALL(Enable(GR_GL_SCISSOR_TEST));
-                fHWScissorSettings.fEnabled = kYes_TriState;
-            }
-            return;
-        }
-    }
-
-    // See fall through note above
-    this->disableScissor();
-}
-
-bool GrGLGpu::flushGLState(const GrOptDrawState& optState) {
-    GrXferProcessor::BlendInfo blendInfo;
-    optState.getXferProcessor()->getBlendInfo(&blendInfo);
-
-    this->flushDither(optState.isDitherState());
-    this->flushColorWrite(blendInfo.fWriteColor);
-    this->flushDrawFace(optState.getDrawFace());
-
-    fCurrentProgram.reset(fProgramCache->getProgram(optState));
-    if (NULL == fCurrentProgram.get()) {
-        SkDEBUGFAIL("Failed to create program!");
-        return false;
-    }
-
-    fCurrentProgram.get()->ref();
-
-    GrGLuint programID = fCurrentProgram->programID();
-    if (fHWProgramID != programID) {
-        GL_CALL(UseProgram(programID));
-        fHWProgramID = programID;
-    }
-
-    if (blendInfo.fWriteColor) {
-        this->flushBlend(blendInfo);
-    }
-
-    fCurrentProgram->setData(optState);
-
-    GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(optState.getRenderTarget());
-    this->flushStencil(optState.getStencil());
-    this->flushScissor(optState.getScissorState(), glRT->getViewport(), glRT->origin());
-    this->flushHWAAState(glRT, optState.isHWAntialiasState(),
-                         kDrawLines_DrawType == optState.drawType());
-
-    // This must come after textures are flushed because a texture may need
-    // to be msaa-resolved (which will modify bound FBO state).
-    this->flushRenderTarget(glRT, NULL);
-
-    return true;
-}
-
-void GrGLGpu::setupGeometry(const GrOptDrawState& optState,
-                            const GrDrawTarget::DrawInfo& info,
-                            size_t* indexOffsetInBytes) {
-    GrGLVertexBuffer* vbuf;
-    vbuf = (GrGLVertexBuffer*) info.vertexBuffer();
-
-    SkASSERT(vbuf);
-    SkASSERT(!vbuf->isMapped());
-
-    GrGLIndexBuffer* ibuf = NULL;
-    if (info.isIndexed()) {
-        SkASSERT(indexOffsetInBytes);
-
-        *indexOffsetInBytes = 0;
-        ibuf = (GrGLIndexBuffer*)info.indexBuffer();
-
-        SkASSERT(ibuf);
-        SkASSERT(!ibuf->isMapped());
-        *indexOffsetInBytes += ibuf->baseOffset();
-    }
-    GrGLAttribArrayState* attribState =
-        fHWGeometryState.bindArrayAndBuffersToDraw(this, vbuf, ibuf);
-
-    if (fCurrentProgram->hasVertexShader()) {
-        const GrGeometryProcessor* gp = optState.getGeometryProcessor();
-
-        GrGLsizei stride = static_cast<GrGLsizei>(gp->getVertexStride());
-
-        size_t vertexOffsetInBytes = stride * info.startVertex();
-
-        vertexOffsetInBytes += vbuf->baseOffset();
-
-        const SkTArray<GrGeometryProcessor::GrAttribute, true>& attribs = gp->getAttribs();
-        int vaCount = attribs.count();
-        uint32_t usedAttribArraysMask = 0;
-        size_t offset = 0;
-
-        for (int attribIndex = 0; attribIndex < vaCount; attribIndex++) {
-            usedAttribArraysMask |= (1 << attribIndex);
-            GrVertexAttribType attribType = attribs[attribIndex].fType;
-            attribState->set(this,
-                             attribIndex,
-                             vbuf,
-                             GrGLAttribTypeToLayout(attribType).fCount,
-                             GrGLAttribTypeToLayout(attribType).fType,
-                             GrGLAttribTypeToLayout(attribType).fNormalized,
-                             stride,
-                             reinterpret_cast<GrGLvoid*>(vertexOffsetInBytes + offset));
-            offset += attribs[attribIndex].fOffset;
-        }
-        attribState->disableUnusedArrays(this, usedAttribArraysMask);
-    }
-}
-
-void GrGLGpu::buildProgramDesc(const GrOptDrawState& optState,
-                               const GrProgramDesc::DescInfo& descInfo,
-                               GrGpu::DrawType drawType,
-                               GrProgramDesc* desc) {
-    if (!GrGLProgramDescBuilder::Build(optState, descInfo, drawType, this, desc)) {
-        SkDEBUGFAIL("Failed to generate GL program descriptor");
-    }
-}
-
-void GrGLGpu::disableScissor() {
-    if (kNo_TriState != fHWScissorSettings.fEnabled) {
-        GL_CALL(Disable(GR_GL_SCISSOR_TEST));
-        fHWScissorSettings.fEnabled = kNo_TriState;
-        return;
-    }
-}
-
-void GrGLGpu::onClear(GrRenderTarget* target, const SkIRect* rect, GrColor color,
-                      bool canIgnoreRect) {
-    // parent class should never let us get here with no RT
-    SkASSERT(target);
-    GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target);
-
-    if (canIgnoreRect && this->glCaps().fullClearIsFree()) {
-        rect = NULL;
-    }
-
-    SkIRect clippedRect;
-    if (rect) {
-        // flushScissor expects rect to be clipped to the target.
-        clippedRect = *rect;
-        SkIRect rtRect = SkIRect::MakeWH(target->width(), target->height());
-        if (clippedRect.intersect(rtRect)) {
-            rect = &clippedRect;
-        } else {
-            return;
-        }
-    }
-
-    this->flushRenderTarget(glRT, rect);
-    GrScissorState scissorState;
-    scissorState.fEnabled = SkToBool(rect);
-    if (scissorState.fEnabled) {
-        scissorState.fRect = *rect;
-    }
-    this->flushScissor(scissorState, glRT->getViewport(), glRT->origin());
-
-    GrGLfloat r, g, b, a;
-    static const GrGLfloat scale255 = 1.f / 255.f;
-    a = GrColorUnpackA(color) * scale255;
-    GrGLfloat scaleRGB = scale255;
-    r = GrColorUnpackR(color) * scaleRGB;
-    g = GrColorUnpackG(color) * scaleRGB;
-    b = GrColorUnpackB(color) * scaleRGB;
-
-    GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE));
-    fHWWriteToColor = kYes_TriState;
-    GL_CALL(ClearColor(r, g, b, a));
-    GL_CALL(Clear(GR_GL_COLOR_BUFFER_BIT));
-}
-
-void GrGLGpu::discard(GrRenderTarget* renderTarget) {
-    SkASSERT(renderTarget);
-    if (!this->caps()->discardRenderTargetSupport()) {
-        return;
-    }
-
-    GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(renderTarget);
-    if (renderTarget->getUniqueID() != fHWBoundRenderTargetUniqueID) {
-        fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID;
-        fGPUStats.incRenderTargetBinds();
-        GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, glRT->renderFBOID()));
-    }
-    switch (this->glCaps().invalidateFBType()) {
-        case GrGLCaps::kNone_InvalidateFBType:
-            SkFAIL("Should never get here.");
-            break;
-        case GrGLCaps::kInvalidate_InvalidateFBType:
-            if (0 == glRT->renderFBOID()) {
-                //  When rendering to the default framebuffer the legal values for attachments
-                //  are GL_COLOR, GL_DEPTH, GL_STENCIL, ... rather than the various FBO attachment
-                //  types.
-                static const GrGLenum attachments[] = { GR_GL_COLOR };
-                GL_CALL(InvalidateFramebuffer(GR_GL_FRAMEBUFFER, SK_ARRAY_COUNT(attachments),
-                        attachments));
-            } else {
-                static const GrGLenum attachments[] = { GR_GL_COLOR_ATTACHMENT0 };
-                GL_CALL(InvalidateFramebuffer(GR_GL_FRAMEBUFFER, SK_ARRAY_COUNT(attachments),
-                        attachments));
-            }
-            break;
-        case GrGLCaps::kDiscard_InvalidateFBType: {
-            if (0 == glRT->renderFBOID()) {
-                //  When rendering to the default framebuffer the legal values for attachments
-                //  are GL_COLOR, GL_DEPTH, GL_STENCIL, ... rather than the various FBO attachment
-                //  types. See glDiscardFramebuffer() spec.
-                static const GrGLenum attachments[] = { GR_GL_COLOR };
-                GL_CALL(DiscardFramebuffer(GR_GL_FRAMEBUFFER, SK_ARRAY_COUNT(attachments),
-                        attachments));
-            } else {
-                static const GrGLenum attachments[] = { GR_GL_COLOR_ATTACHMENT0 };
-                GL_CALL(DiscardFramebuffer(GR_GL_FRAMEBUFFER, SK_ARRAY_COUNT(attachments),
-                        attachments));
-            }
-            break;
-        }
-    }
-    renderTarget->flagAsResolved();
-}
-
-
-void GrGLGpu::clearStencil(GrRenderTarget* target) {
-    if (NULL == target) {
-        return;
-    }
-    GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target);
-    this->flushRenderTarget(glRT, &SkIRect::EmptyIRect());
-
-    this->disableScissor();
-
-    GL_CALL(StencilMask(0xffffffff));
-    GL_CALL(ClearStencil(0));
-    GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT));
-    fHWStencilSettings.invalidate();
-}
-
-void GrGLGpu::onClearStencilClip(GrRenderTarget* target, const SkIRect& rect, bool insideClip) {
-    SkASSERT(target);
-
-    // this should only be called internally when we know we have a
-    // stencil buffer.
-    SkASSERT(target->getStencilBuffer());
-    GrGLint stencilBitCount =  target->getStencilBuffer()->bits();
-#if 0
-    SkASSERT(stencilBitCount > 0);
-    GrGLint clipStencilMask  = (1 << (stencilBitCount - 1));
-#else
-    // we could just clear the clip bit but when we go through
-    // ANGLE a partial stencil mask will cause clears to be
-    // turned into draws. Our contract on GrDrawTarget says that
-    // changing the clip between stencil passes may or may not
-    // zero the client's clip bits. So we just clear the whole thing.
-    static const GrGLint clipStencilMask  = ~0;
-#endif
-    GrGLint value;
-    if (insideClip) {
-        value = (1 << (stencilBitCount - 1));
-    } else {
-        value = 0;
-    }
-    GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target);
-    this->flushRenderTarget(glRT, &SkIRect::EmptyIRect());
-
-    GrScissorState scissorState;
-    scissorState.fEnabled = true;
-    scissorState.fRect = rect;
-    this->flushScissor(scissorState, glRT->getViewport(), glRT->origin());
-
-    GL_CALL(StencilMask((uint32_t) clipStencilMask));
-    GL_CALL(ClearStencil(value));
-    GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT));
-    fHWStencilSettings.invalidate();
-}
-
-bool GrGLGpu::readPixelsWillPayForYFlip(GrRenderTarget* renderTarget,
-                                        int left, int top,
-                                        int width, int height,
-                                        GrPixelConfig config,
-                                        size_t rowBytes) const {
-    // If this rendertarget is aready TopLeft, we don't need to flip.
-    if (kTopLeft_GrSurfaceOrigin == renderTarget->origin()) {
-        return false;
-    }
-
-    // if GL can do the flip then we'll never pay for it.
-    if (this->glCaps().packFlipYSupport()) {
-        return false;
-    }
-
-    // If we have to do memcpy to handle non-trim rowBytes then we
-    // get the flip for free. Otherwise it costs.
-    if (this->glCaps().packRowLengthSupport()) {
-        return true;
-    }
-    // If we have to do memcpys to handle rowBytes then y-flip is free
-    // Note the rowBytes might be tight to the passed in data, but if data
-    // gets clipped in x to the target the rowBytes will no longer be tight.
-    if (left >= 0 && (left + width) < renderTarget->width()) {
-           return 0 == rowBytes ||
-                  GrBytesPerPixel(config) * width == rowBytes;
-    } else {
-        return false;
-    }
-}
-
-bool GrGLGpu::onReadPixels(GrRenderTarget* target,
-                           int left, int top,
-                           int width, int height,
-                           GrPixelConfig config,
-                           void* buffer,
-                           size_t rowBytes) {
-    // We cannot read pixels into a compressed buffer
-    if (GrPixelConfigIsCompressed(config)) {
-        return false;
-    }
-
-    GrGLenum format = 0;
-    GrGLenum type = 0;
-    bool flipY = kBottomLeft_GrSurfaceOrigin == target->origin();
-    if (!this->configToGLFormats(config, false, NULL, &format, &type)) {
-        return false;
-    }
-    size_t bpp = GrBytesPerPixel(config);
-    if (!adjust_pixel_ops_params(target->width(), target->height(), bpp,
-                                 &left, &top, &width, &height,
-                                 const_cast<const void**>(&buffer),
-                                 &rowBytes)) {
-        return false;
-    }
-
-    // resolve the render target if necessary
-    GrGLRenderTarget* tgt = static_cast<GrGLRenderTarget*>(target);
-    switch (tgt->getResolveType()) {
-        case GrGLRenderTarget::kCantResolve_ResolveType:
-            return false;
-        case GrGLRenderTarget::kAutoResolves_ResolveType:
-            this->flushRenderTarget(static_cast<GrGLRenderTarget*>(target), &SkIRect::EmptyIRect());
-            break;
-        case GrGLRenderTarget::kCanResolve_ResolveType:
-            this->onResolveRenderTarget(tgt);
-            // we don't track the state of the READ FBO ID.
-            fGPUStats.incRenderTargetBinds();
-            GL_CALL(BindFramebuffer(GR_GL_READ_FRAMEBUFFER,
-                                    tgt->textureFBOID()));
-            break;
-        default:
-            SkFAIL("Unknown resolve type");
-    }
-
-    const GrGLIRect& glvp = tgt->getViewport();
-
-    // the read rect is viewport-relative
-    GrGLIRect readRect;
-    readRect.setRelativeTo(glvp, left, top, width, height, target->origin());
-
-    size_t tightRowBytes = bpp * width;
-    if (0 == rowBytes) {
-        rowBytes = tightRowBytes;
-    }
-    size_t readDstRowBytes = tightRowBytes;
-    void* readDst = buffer;
-
-    // determine if GL can read using the passed rowBytes or if we need
-    // a scratch buffer.
-    GrAutoMalloc<32 * sizeof(GrColor)> scratch;
-    if (rowBytes != tightRowBytes) {
-        if (this->glCaps().packRowLengthSupport()) {
-            SkASSERT(!(rowBytes % sizeof(GrColor)));
-            GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH,
-                                static_cast<GrGLint>(rowBytes / sizeof(GrColor))));
-            readDstRowBytes = rowBytes;
-        } else {
-            scratch.reset(tightRowBytes * height);
-            readDst = scratch.get();
-        }
-    }
-    if (flipY && this->glCaps().packFlipYSupport()) {
-        GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, 1));
-    }
-    GL_CALL(ReadPixels(readRect.fLeft, readRect.fBottom,
-                       readRect.fWidth, readRect.fHeight,
-                       format, type, readDst));
-    if (readDstRowBytes != tightRowBytes) {
-        SkASSERT(this->glCaps().packRowLengthSupport());
-        GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0));
-    }
-    if (flipY && this->glCaps().packFlipYSupport()) {
-        GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, 0));
-        flipY = false;
-    }
-
-    // now reverse the order of the rows, since GL's are bottom-to-top, but our
-    // API presents top-to-bottom. We must preserve the padding contents. Note
-    // that the above readPixels did not overwrite the padding.
-    if (readDst == buffer) {
-        SkASSERT(rowBytes == readDstRowBytes);
-        if (flipY) {
-            scratch.reset(tightRowBytes);
-            void* tmpRow = scratch.get();
-            // flip y in-place by rows
-            const int halfY = height >> 1;
-            char* top = reinterpret_cast<char*>(buffer);
-            char* bottom = top + (height - 1) * rowBytes;
-            for (int y = 0; y < halfY; y++) {
-                memcpy(tmpRow, top, tightRowBytes);
-                memcpy(top, bottom, tightRowBytes);
-                memcpy(bottom, tmpRow, tightRowBytes);
-                top += rowBytes;
-                bottom -= rowBytes;
-            }
-        }
-    } else {
-        SkASSERT(readDst != buffer);        SkASSERT(rowBytes != tightRowBytes);
-        // copy from readDst to buffer while flipping y
-        // const int halfY = height >> 1;
-        const char* src = reinterpret_cast<const char*>(readDst);
-        char* dst = reinterpret_cast<char*>(buffer);
-        if (flipY) {
-            dst += (height-1) * rowBytes;
-        }
-        for (int y = 0; y < height; y++) {
-            memcpy(dst, src, tightRowBytes);
-            src += readDstRowBytes;
-            if (!flipY) {
-                dst += rowBytes;
-            } else {
-                dst -= rowBytes;
-            }
-        }
-    }
-    return true;
-}
-
-void GrGLGpu::flushRenderTarget(GrGLRenderTarget* target, const SkIRect* bound) {
-
-    SkASSERT(target);
-
-    uint32_t rtID = target->getUniqueID();
-    if (fHWBoundRenderTargetUniqueID != rtID) {
-        fGPUStats.incRenderTargetBinds();
-        GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, target->renderFBOID()));
-#ifdef SK_DEBUG
-        // don't do this check in Chromium -- this is causing
-        // lots of repeated command buffer flushes when the compositor is
-        // rendering with Ganesh, which is really slow; even too slow for
-        // Debug mode.
-        if (!this->glContext().isChromium()) {
-            GrGLenum status;
-            GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
-            if (status != GR_GL_FRAMEBUFFER_COMPLETE) {
-                SkDebugf("GrGLGpu::flushRenderTarget glCheckFramebufferStatus %x\n", status);
-            }
-        }
-#endif
-        fHWBoundRenderTargetUniqueID = rtID;
-        const GrGLIRect& vp = target->getViewport();
-        if (fHWViewport != vp) {
-            vp.pushToGLViewport(this->glInterface());
-            fHWViewport = vp;
-        }
-    }
-    if (NULL == bound || !bound->isEmpty()) {
-        target->flagAsNeedingResolve(bound);
-    }
-
-    GrTexture *texture = target->asTexture();
-    if (texture) {
-        texture->texturePriv().dirtyMipMaps(true);
-    }
-}
-
-GrGLenum gPrimitiveType2GLMode[] = {
-    GR_GL_TRIANGLES,
-    GR_GL_TRIANGLE_STRIP,
-    GR_GL_TRIANGLE_FAN,
-    GR_GL_POINTS,
-    GR_GL_LINES,
-    GR_GL_LINE_STRIP
-};
-
-#define SWAP_PER_DRAW 0
-
-#if SWAP_PER_DRAW
-    #if defined(SK_BUILD_FOR_MAC)
-        #include <AGL/agl.h>
-    #elif defined(SK_BUILD_FOR_WIN32)
-        #include <gl/GL.h>
-        void SwapBuf() {
-            DWORD procID = GetCurrentProcessId();
-            HWND hwnd = GetTopWindow(GetDesktopWindow());
-            while(hwnd) {
-                DWORD wndProcID = 0;
-                GetWindowThreadProcessId(hwnd, &wndProcID);
-                if(wndProcID == procID) {
-                    SwapBuffers(GetDC(hwnd));
-                }
-                hwnd = GetNextWindow(hwnd, GW_HWNDNEXT);
-            }
-         }
-    #endif
-#endif
-
-void GrGLGpu::onDraw(const GrOptDrawState& ds, const GrDrawTarget::DrawInfo& info) {
-    if (!this->flushGLState(ds)) {
-        return;
-    }
-
-    size_t indexOffsetInBytes;
-    this->setupGeometry(ds, info, &indexOffsetInBytes);
-
-    SkASSERT((size_t)info.primitiveType() < SK_ARRAY_COUNT(gPrimitiveType2GLMode));
-
-    if (info.isIndexed()) {
-        GrGLvoid* indices =
-            reinterpret_cast<GrGLvoid*>(indexOffsetInBytes + sizeof(uint16_t) * info.startIndex());
-        // info.startVertex() was accounted for by setupGeometry.
-        GL_CALL(DrawElements(gPrimitiveType2GLMode[info.primitiveType()],
-                             info.indexCount(),
-                             GR_GL_UNSIGNED_SHORT,
-                             indices));
-    } else {
-        // Pass 0 for parameter first. We have to adjust glVertexAttribPointer() to account for
-        // startVertex in the DrawElements case. So we always rely on setupGeometry to have
-        // accounted for startVertex.
-        GL_CALL(DrawArrays(gPrimitiveType2GLMode[info.primitiveType()], 0, info.vertexCount()));
-    }
-#if SWAP_PER_DRAW
-    glFlush();
-    #if defined(SK_BUILD_FOR_MAC)
-        aglSwapBuffers(aglGetCurrentContext());
-        int set_a_break_pt_here = 9;
-        aglSwapBuffers(aglGetCurrentContext());
-    #elif defined(SK_BUILD_FOR_WIN32)
-        SwapBuf();
-        int set_a_break_pt_here = 9;
-        SwapBuf();
-    #endif
-#endif
-}
-
-void GrGLGpu::onStencilPath(const GrPath* path, const StencilPathState& state) {
-    this->flushColorWrite(false);
-    this->flushDrawFace(GrDrawState::kBoth_DrawFace);
-
-    GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(state.fRenderTarget);
-    SkISize size = SkISize::Make(rt->width(), rt->height());
-    this->glPathRendering()->setProjectionMatrix(*state.fViewMatrix, size, rt->origin());
-    this->flushScissor(*state.fScissor, rt->getViewport(), rt->origin());
-    this->flushHWAAState(rt, state.fUseHWAA, false);
-    this->flushRenderTarget(rt, NULL);
-
-    fPathRendering->stencilPath(path, *state.fStencil);
-}
-
-void GrGLGpu::onDrawPath(const GrOptDrawState& ds, const GrPath* path,
-                         const GrStencilSettings& stencil) {
-    if (!this->flushGLState(ds)) {
-        return;
-    }
-    fPathRendering->drawPath(path, stencil);
-}
-
-void GrGLGpu::onDrawPaths(const GrOptDrawState& ds,
-                          const GrPathRange* pathRange,
-                          const void* indices,
-                          GrDrawTarget::PathIndexType indexType,
-                          const float transformValues[],
-                          GrDrawTarget::PathTransformType transformType,
-                           int count,
-                           const GrStencilSettings& stencil) {
-    if (!this->flushGLState(ds)) {
-        return;
-    }
-    fPathRendering->drawPaths(pathRange, indices, indexType, transformValues,
-                              transformType, count, stencil);
-}
-
-void GrGLGpu::onResolveRenderTarget(GrRenderTarget* target) {
-    GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(target);
-    if (rt->needsResolve()) {
-        // Some extensions automatically resolves the texture when it is read.
-        if (this->glCaps().usesMSAARenderBuffers()) {
-            SkASSERT(rt->textureFBOID() != rt->renderFBOID());
-            fGPUStats.incRenderTargetBinds();
-            fGPUStats.incRenderTargetBinds();
-            GL_CALL(BindFramebuffer(GR_GL_READ_FRAMEBUFFER, rt->renderFBOID()));
-            GL_CALL(BindFramebuffer(GR_GL_DRAW_FRAMEBUFFER, rt->textureFBOID()));
-            // make sure we go through flushRenderTarget() since we've modified
-            // the bound DRAW FBO ID.
-            fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID;
-            const GrGLIRect& vp = rt->getViewport();
-            const SkIRect dirtyRect = rt->getResolveRect();
-            GrGLIRect r;
-            r.setRelativeTo(vp, dirtyRect.fLeft, dirtyRect.fTop,
-                            dirtyRect.width(), dirtyRect.height(), target->origin());
-
-            if (GrGLCaps::kES_Apple_MSFBOType == this->glCaps().msFBOType()) {
-                // Apple's extension uses the scissor as the blit bounds.
-                GrScissorState scissorState;
-                scissorState.fEnabled = true;
-                scissorState.fRect = dirtyRect;
-                this->flushScissor(scissorState, rt->getViewport(), rt->origin());
-                GL_CALL(ResolveMultisampleFramebuffer());
-            } else {
-                int right = r.fLeft + r.fWidth;
-                int top = r.fBottom + r.fHeight;
-
-                // BlitFrameBuffer respects the scissor, so disable it.
-                this->disableScissor();
-                GL_CALL(BlitFramebuffer(r.fLeft, r.fBottom, right, top,
-                                        r.fLeft, r.fBottom, right, top,
-                                        GR_GL_COLOR_BUFFER_BIT, GR_GL_NEAREST));
-            }
-        }
-        rt->flagAsResolved();
-    }
-}
-
-namespace {
-
-
-GrGLenum gr_to_gl_stencil_op(GrStencilOp op) {
-    static const GrGLenum gTable[] = {
-        GR_GL_KEEP,        // kKeep_StencilOp
-        GR_GL_REPLACE,     // kReplace_StencilOp
-        GR_GL_INCR_WRAP,   // kIncWrap_StencilOp
-        GR_GL_INCR,        // kIncClamp_StencilOp
-        GR_GL_DECR_WRAP,   // kDecWrap_StencilOp
-        GR_GL_DECR,        // kDecClamp_StencilOp
-        GR_GL_ZERO,        // kZero_StencilOp
-        GR_GL_INVERT,      // kInvert_StencilOp
-    };
-    GR_STATIC_ASSERT(SK_ARRAY_COUNT(gTable) == kStencilOpCount);
-    GR_STATIC_ASSERT(0 == kKeep_StencilOp);
-    GR_STATIC_ASSERT(1 == kReplace_StencilOp);
-    GR_STATIC_ASSERT(2 == kIncWrap_StencilOp);
-    GR_STATIC_ASSERT(3 == kIncClamp_StencilOp);
-    GR_STATIC_ASSERT(4 == kDecWrap_StencilOp);
-    GR_STATIC_ASSERT(5 == kDecClamp_StencilOp);
-    GR_STATIC_ASSERT(6 == kZero_StencilOp);
-    GR_STATIC_ASSERT(7 == kInvert_StencilOp);
-    SkASSERT((unsigned) op < kStencilOpCount);
-    return gTable[op];
-}
-
-void set_gl_stencil(const GrGLInterface* gl,
-                    const GrStencilSettings& settings,
-                    GrGLenum glFace,
-                    GrStencilSettings::Face grFace) {
-    GrGLenum glFunc = GrToGLStencilFunc(settings.func(grFace));
-    GrGLenum glFailOp = gr_to_gl_stencil_op(settings.failOp(grFace));
-    GrGLenum glPassOp = gr_to_gl_stencil_op(settings.passOp(grFace));
-
-    GrGLint ref = settings.funcRef(grFace);
-    GrGLint mask = settings.funcMask(grFace);
-    GrGLint writeMask = settings.writeMask(grFace);
-
-    if (GR_GL_FRONT_AND_BACK == glFace) {
-        // we call the combined func just in case separate stencil is not
-        // supported.
-        GR_GL_CALL(gl, StencilFunc(glFunc, ref, mask));
-        GR_GL_CALL(gl, StencilMask(writeMask));
-        GR_GL_CALL(gl, StencilOp(glFailOp, glPassOp, glPassOp));
-    } else {
-        GR_GL_CALL(gl, StencilFuncSeparate(glFace, glFunc, ref, mask));
-        GR_GL_CALL(gl, StencilMaskSeparate(glFace, writeMask));
-        GR_GL_CALL(gl, StencilOpSeparate(glFace, glFailOp, glPassOp, glPassOp));
-    }
-}
-}
-
-void GrGLGpu::flushStencil(const GrStencilSettings& stencilSettings) {
-    if (fHWStencilSettings != stencilSettings) {
-        if (stencilSettings.isDisabled()) {
-            if (kNo_TriState != fHWStencilTestEnabled) {
-                GL_CALL(Disable(GR_GL_STENCIL_TEST));
-                fHWStencilTestEnabled = kNo_TriState;
-            }
-        } else {
-            if (kYes_TriState != fHWStencilTestEnabled) {
-                GL_CALL(Enable(GR_GL_STENCIL_TEST));
-                fHWStencilTestEnabled = kYes_TriState;
-            }
-        }
-        if (!stencilSettings.isDisabled()) {
-            if (this->caps()->twoSidedStencilSupport()) {
-                set_gl_stencil(this->glInterface(),
-                               stencilSettings,
-                               GR_GL_FRONT,
-                               GrStencilSettings::kFront_Face);
-                set_gl_stencil(this->glInterface(),
-                               stencilSettings,
-                               GR_GL_BACK,
-                               GrStencilSettings::kBack_Face);
-            } else {
-                set_gl_stencil(this->glInterface(),
-                               stencilSettings,
-                               GR_GL_FRONT_AND_BACK,
-                               GrStencilSettings::kFront_Face);
-            }
-        }
-        fHWStencilSettings = stencilSettings;
-    }
-}
-
-void GrGLGpu::flushHWAAState(GrRenderTarget* rt, bool useHWAA, bool isLineDraw) {
-// At least some ATI linux drivers will render GL_LINES incorrectly when MSAA state is enabled but
-// the target is not multisampled. Single pixel wide lines are rendered thicker than 1 pixel wide.
-#if 0
-    // Replace RT_HAS_MSAA with this definition once this driver bug is no longer a relevant concern
-    #define RT_HAS_MSAA rt->isMultisampled()
-#else
-    #define RT_HAS_MSAA (rt->isMultisampled() || isLineDraw)
-#endif
-
-    if (kGL_GrGLStandard == this->glStandard()) {
-        if (RT_HAS_MSAA) {
-            if (useHWAA) {
-                if (kYes_TriState != fMSAAEnabled) {
-                    GL_CALL(Enable(GR_GL_MULTISAMPLE));
-                    fMSAAEnabled = kYes_TriState;
-                }
-            } else {
-                if (kNo_TriState != fMSAAEnabled) {
-                    GL_CALL(Disable(GR_GL_MULTISAMPLE));
-                    fMSAAEnabled = kNo_TriState;
-                }
-            }
-        }
-    }
-}
-
-void GrGLGpu::flushBlend(const GrXferProcessor::BlendInfo& blendInfo) {
-    // Any optimization to disable blending should have already been applied and
-    // tweaked the coeffs to (1, 0).
-    
-    GrBlendCoeff srcCoeff = blendInfo.fSrcBlend;
-    GrBlendCoeff dstCoeff = blendInfo.fDstBlend;
-    bool blendOff = kOne_GrBlendCoeff == srcCoeff && kZero_GrBlendCoeff == dstCoeff;
-    if (blendOff) {
-        if (kNo_TriState != fHWBlendState.fEnabled) {
-            GL_CALL(Disable(GR_GL_BLEND));
-            fHWBlendState.fEnabled = kNo_TriState;
-        }
-    } else {
-        if (kYes_TriState != fHWBlendState.fEnabled) {
-            GL_CALL(Enable(GR_GL_BLEND));
-            fHWBlendState.fEnabled = kYes_TriState;
-        }
-        if (fHWBlendState.fSrcCoeff != srcCoeff ||
-            fHWBlendState.fDstCoeff != dstCoeff) {
-            GL_CALL(BlendFunc(gXfermodeCoeff2Blend[srcCoeff],
-                              gXfermodeCoeff2Blend[dstCoeff]));
-            fHWBlendState.fSrcCoeff = srcCoeff;
-            fHWBlendState.fDstCoeff = dstCoeff;
-        }
-        GrColor blendConst = blendInfo.fBlendConstant;
-        if ((BlendCoeffReferencesConstant(srcCoeff) ||
-             BlendCoeffReferencesConstant(dstCoeff)) &&
-            (!fHWBlendState.fConstColorValid ||
-             fHWBlendState.fConstColor != blendConst)) {
-            GrGLfloat c[4];
-            GrColorToRGBAFloat(blendConst, c);
-            GL_CALL(BlendColor(c[0], c[1], c[2], c[3]));
-            fHWBlendState.fConstColor = blendConst;
-            fHWBlendState.fConstColorValid = true;
-        }
-    }
-}
-
-static inline GrGLenum tile_to_gl_wrap(SkShader::TileMode tm) {
-    static const GrGLenum gWrapModes[] = {
-        GR_GL_CLAMP_TO_EDGE,
-        GR_GL_REPEAT,
-        GR_GL_MIRRORED_REPEAT
-    };
-    GR_STATIC_ASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gWrapModes));
-    GR_STATIC_ASSERT(0 == SkShader::kClamp_TileMode);
-    GR_STATIC_ASSERT(1 == SkShader::kRepeat_TileMode);
-    GR_STATIC_ASSERT(2 == SkShader::kMirror_TileMode);
-    return gWrapModes[tm];
-}
-
-void GrGLGpu::bindTexture(int unitIdx, const GrTextureParams& params, GrGLTexture* texture) {
-    SkASSERT(texture);
-
-    // If we created a rt/tex and rendered to it without using a texture and now we're texturing
-    // from the rt it will still be the last bound texture, but it needs resolving. So keep this
-    // out of the "last != next" check.
-    GrGLRenderTarget* texRT = static_cast<GrGLRenderTarget*>(texture->asRenderTarget());
-    if (texRT) {
-        this->onResolveRenderTarget(texRT);
-    }
-
-    uint32_t textureID = texture->getUniqueID();
-    if (fHWBoundTextureUniqueIDs[unitIdx] != textureID) {
-        this->setTextureUnit(unitIdx);
-        GL_CALL(BindTexture(GR_GL_TEXTURE_2D, texture->textureID()));
-        fHWBoundTextureUniqueIDs[unitIdx] = textureID;
-    }
-
-    ResetTimestamp timestamp;
-    const GrGLTexture::TexParams& oldTexParams = texture->getCachedTexParams(&timestamp);
-    bool setAll = timestamp < this->getResetTimestamp();
-    GrGLTexture::TexParams newTexParams;
-
-    static GrGLenum glMinFilterModes[] = {
-        GR_GL_NEAREST,
-        GR_GL_LINEAR,
-        GR_GL_LINEAR_MIPMAP_LINEAR
-    };
-    static GrGLenum glMagFilterModes[] = {
-        GR_GL_NEAREST,
-        GR_GL_LINEAR,
-        GR_GL_LINEAR
-    };
-    GrTextureParams::FilterMode filterMode = params.filterMode();
-
-    if (GrTextureParams::kMipMap_FilterMode == filterMode) {
-        if (!this->caps()->mipMapSupport() || GrPixelConfigIsCompressed(texture->config())) {
-            filterMode = GrTextureParams::kBilerp_FilterMode;
-        }
-    }
-
-    newTexParams.fMinFilter = glMinFilterModes[filterMode];
-    newTexParams.fMagFilter = glMagFilterModes[filterMode];
-
-    if (GrTextureParams::kMipMap_FilterMode == filterMode &&
-        texture->texturePriv().mipMapsAreDirty()) {
-        GL_CALL(GenerateMipmap(GR_GL_TEXTURE_2D));
-        texture->texturePriv().dirtyMipMaps(false);
-    }
-
-    newTexParams.fWrapS = tile_to_gl_wrap(params.getTileModeX());
-    newTexParams.fWrapT = tile_to_gl_wrap(params.getTileModeY());
-    memcpy(newTexParams.fSwizzleRGBA,
-           GrGLShaderBuilder::GetTexParamSwizzle(texture->config(), this->glCaps()),
-           sizeof(newTexParams.fSwizzleRGBA));
-    if (setAll || newTexParams.fMagFilter != oldTexParams.fMagFilter) {
-        this->setTextureUnit(unitIdx);
-        GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                              GR_GL_TEXTURE_MAG_FILTER,
-                              newTexParams.fMagFilter));
-    }
-    if (setAll || newTexParams.fMinFilter != oldTexParams.fMinFilter) {
-        this->setTextureUnit(unitIdx);
-        GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                              GR_GL_TEXTURE_MIN_FILTER,
-                              newTexParams.fMinFilter));
-    }
-    if (setAll || newTexParams.fWrapS != oldTexParams.fWrapS) {
-        this->setTextureUnit(unitIdx);
-        GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                              GR_GL_TEXTURE_WRAP_S,
-                              newTexParams.fWrapS));
-    }
-    if (setAll || newTexParams.fWrapT != oldTexParams.fWrapT) {
-        this->setTextureUnit(unitIdx);
-        GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
-                              GR_GL_TEXTURE_WRAP_T,
-                              newTexParams.fWrapT));
-    }
-    if (this->glCaps().textureSwizzleSupport() &&
-        (setAll || memcmp(newTexParams.fSwizzleRGBA,
-                          oldTexParams.fSwizzleRGBA,
-                          sizeof(newTexParams.fSwizzleRGBA)))) {
-        this->setTextureUnit(unitIdx);
-        if (this->glStandard() == kGLES_GrGLStandard) {
-            // ES3 added swizzle support but not GL_TEXTURE_SWIZZLE_RGBA.
-            const GrGLenum* swizzle = newTexParams.fSwizzleRGBA;
-            GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_R, swizzle[0]));
-            GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_G, swizzle[1]));
-            GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_B, swizzle[2]));
-            GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_A, swizzle[3]));
-        } else {
-            GR_STATIC_ASSERT(sizeof(newTexParams.fSwizzleRGBA[0]) == sizeof(GrGLint));
-            const GrGLint* swizzle = reinterpret_cast<const GrGLint*>(newTexParams.fSwizzleRGBA);
-            GL_CALL(TexParameteriv(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_SWIZZLE_RGBA, swizzle));
-        }
-    }
-    texture->setCachedTexParams(newTexParams, this->getResetTimestamp());
-}
-
-void GrGLGpu::flushDither(bool dither) {
-    if (dither) {
-        if (kYes_TriState != fHWDitherEnabled) {
-            GL_CALL(Enable(GR_GL_DITHER));
-            fHWDitherEnabled = kYes_TriState;
-        }
-    } else {
-        if (kNo_TriState != fHWDitherEnabled) {
-            GL_CALL(Disable(GR_GL_DITHER));
-            fHWDitherEnabled = kNo_TriState;
-        }
-    }
-}
-
-void GrGLGpu::flushColorWrite(bool writeColor) {
-    if (!writeColor) {
-        if (kNo_TriState != fHWWriteToColor) {
-            GL_CALL(ColorMask(GR_GL_FALSE, GR_GL_FALSE,
-                              GR_GL_FALSE, GR_GL_FALSE));
-            fHWWriteToColor = kNo_TriState;
-        }
-    } else {
-        if (kYes_TriState != fHWWriteToColor) {
-            GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE));
-            fHWWriteToColor = kYes_TriState;
-        }
-    }
-}
-
-void GrGLGpu::flushDrawFace(GrDrawState::DrawFace face) {
-    if (fHWDrawFace != face) {
-        switch (face) {
-            case GrDrawState::kCCW_DrawFace:
-                GL_CALL(Enable(GR_GL_CULL_FACE));
-                GL_CALL(CullFace(GR_GL_BACK));
-                break;
-            case GrDrawState::kCW_DrawFace:
-                GL_CALL(Enable(GR_GL_CULL_FACE));
-                GL_CALL(CullFace(GR_GL_FRONT));
-                break;
-            case GrDrawState::kBoth_DrawFace:
-                GL_CALL(Disable(GR_GL_CULL_FACE));
-                break;
-            default:
-                SkFAIL("Unknown draw face.");
-        }
-        fHWDrawFace = face;
-    }
-}
-
-bool GrGLGpu::configToGLFormats(GrPixelConfig config,
-                                bool getSizedInternalFormat,
-                                GrGLenum* internalFormat,
-                                GrGLenum* externalFormat,
-                                GrGLenum* externalType) {
-    GrGLenum dontCare;
-    if (NULL == internalFormat) {
-        internalFormat = &dontCare;
-    }
-    if (NULL == externalFormat) {
-        externalFormat = &dontCare;
-    }
-    if (NULL == externalType) {
-        externalType = &dontCare;
-    }
-
-    if(!this->glCaps().isConfigTexturable(config)) {
-        return false;
-    }
-
-    switch (config) {
-        case kRGBA_8888_GrPixelConfig:
-            *internalFormat = GR_GL_RGBA;
-            *externalFormat = GR_GL_RGBA;
-            if (getSizedInternalFormat) {
-                *internalFormat = GR_GL_RGBA8;
-            } else {
-                *internalFormat = GR_GL_RGBA;
-            }
-            *externalType = GR_GL_UNSIGNED_BYTE;
-            break;
-        case kBGRA_8888_GrPixelConfig:
-            if (this->glCaps().bgraIsInternalFormat()) {
-                if (getSizedInternalFormat) {
-                    *internalFormat = GR_GL_BGRA8;
-                } else {
-                    *internalFormat = GR_GL_BGRA;
-                }
-            } else {
-                if (getSizedInternalFormat) {
-                    *internalFormat = GR_GL_RGBA8;
-                } else {
-                    *internalFormat = GR_GL_RGBA;
-                }
-            }
-            *externalFormat = GR_GL_BGRA;
-            *externalType = GR_GL_UNSIGNED_BYTE;
-            break;
-        case kSRGBA_8888_GrPixelConfig:
-            *internalFormat = GR_GL_SRGB_ALPHA;
-            *externalFormat = GR_GL_SRGB_ALPHA;
-            if (getSizedInternalFormat) {
-                *internalFormat = GR_GL_SRGB8_ALPHA8;
-            } else {
-                *internalFormat = GR_GL_SRGB_ALPHA;
-            }
-            *externalType = GR_GL_UNSIGNED_BYTE;
-            break;
-        case kRGB_565_GrPixelConfig:
-            *internalFormat = GR_GL_RGB;
-            *externalFormat = GR_GL_RGB;
-            if (getSizedInternalFormat) {
-                if (!this->glCaps().ES2CompatibilitySupport()) {
-                    *internalFormat = GR_GL_RGB5;
-                } else {
-                    *internalFormat = GR_GL_RGB565;
-                }
-            } else {
-                *internalFormat = GR_GL_RGB;
-            }
-            *externalType = GR_GL_UNSIGNED_SHORT_5_6_5;
-            break;
-        case kRGBA_4444_GrPixelConfig:
-            *internalFormat = GR_GL_RGBA;
-            *externalFormat = GR_GL_RGBA;
-            if (getSizedInternalFormat) {
-                *internalFormat = GR_GL_RGBA4;
-            } else {
-                *internalFormat = GR_GL_RGBA;
-            }
-            *externalType = GR_GL_UNSIGNED_SHORT_4_4_4_4;
-            break;
-        case kIndex_8_GrPixelConfig:
-            // no sized/unsized internal format distinction here
-            *internalFormat = GR_GL_PALETTE8_RGBA8;
-            break;
-        case kAlpha_8_GrPixelConfig:
-            if (this->glCaps().textureRedSupport()) {
-                *internalFormat = GR_GL_RED;
-                *externalFormat = GR_GL_RED;
-                if (getSizedInternalFormat) {
-                    *internalFormat = GR_GL_R8;
-                } else {
-                    *internalFormat = GR_GL_RED;
-                }
-                *externalType = GR_GL_UNSIGNED_BYTE;
-            } else {
-                *internalFormat = GR_GL_ALPHA;
-                *externalFormat = GR_GL_ALPHA;
-                if (getSizedInternalFormat) {
-                    *internalFormat = GR_GL_ALPHA8;
-                } else {
-                    *internalFormat = GR_GL_ALPHA;
-                }
-                *externalType = GR_GL_UNSIGNED_BYTE;
-            }
-            break;
-        case kETC1_GrPixelConfig:
-            *internalFormat = GR_GL_COMPRESSED_RGB8_ETC1;
-            break;
-        case kLATC_GrPixelConfig:
-            switch(this->glCaps().latcAlias()) {
-                case GrGLCaps::kLATC_LATCAlias:
-                    *internalFormat = GR_GL_COMPRESSED_LUMINANCE_LATC1;
-                    break;
-                case GrGLCaps::kRGTC_LATCAlias:
-                    *internalFormat = GR_GL_COMPRESSED_RED_RGTC1;
-                    break;
-                case GrGLCaps::k3DC_LATCAlias:
-                    *internalFormat = GR_GL_COMPRESSED_3DC_X;
-                    break;
-            }
-            break;
-        case kR11_EAC_GrPixelConfig:
-            *internalFormat = GR_GL_COMPRESSED_R11;
-            break;
-
-        case kASTC_12x12_GrPixelConfig:
-            *internalFormat = GR_GL_COMPRESSED_RGBA_ASTC_12x12;
-            break;
-
-        case kRGBA_float_GrPixelConfig:
-            *internalFormat = GR_GL_RGBA32F;
-            *externalFormat = GR_GL_RGBA;
-            *externalType = GR_GL_FLOAT;
-            break;
-
-        case kAlpha_half_GrPixelConfig:
-            if (this->glCaps().textureRedSupport()) {
-                if (getSizedInternalFormat) {
-                    *internalFormat = GR_GL_R16F;
-                } else {
-                    *internalFormat = GR_GL_RED;
-                }
-                *externalFormat = GR_GL_RED;
-            } else {
-                if (getSizedInternalFormat) {
-                    *internalFormat = GR_GL_ALPHA16F;
-                } else {
-                    *internalFormat = GR_GL_ALPHA;
-                }
-                *externalFormat = GR_GL_ALPHA;
-            }
-            if (kGL_GrGLStandard == this->glStandard() || this->glVersion() >= GR_GL_VER(3, 0)) {
-                *externalType = GR_GL_HALF_FLOAT;
-            } else {
-                *externalType = GR_GL_HALF_FLOAT_OES;
-            }
-            break;
-            
-        default:
-            return false;
-    }
-    return true;
-}
-
-void GrGLGpu::setTextureUnit(int unit) {
-    SkASSERT(unit >= 0 && unit < fHWBoundTextureUniqueIDs.count());
-    if (unit != fHWActiveTextureUnitIdx) {
-        GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + unit));
-        fHWActiveTextureUnitIdx = unit;
-    }
-}
-
-void GrGLGpu::setScratchTextureUnit() {
-    // Bind the last texture unit since it is the least likely to be used by GrGLProgram.
-    int lastUnitIdx = fHWBoundTextureUniqueIDs.count() - 1;
-    if (lastUnitIdx != fHWActiveTextureUnitIdx) {
-        GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + lastUnitIdx));
-        fHWActiveTextureUnitIdx = lastUnitIdx;
-    }
-    // clear out the this field so that if a program does use this unit it will rebind the correct
-    // texture.
-    fHWBoundTextureUniqueIDs[lastUnitIdx] = SK_InvalidUniqueID;
-}
-
-namespace {
-// Determines whether glBlitFramebuffer could be used between src and dst.
-inline bool can_blit_framebuffer(const GrSurface* dst,
-                                 const GrSurface* src,
-                                 const GrGLGpu* gpu,
-                                 bool* wouldNeedTempFBO = NULL) {
-    if (gpu->glCaps().isConfigRenderable(dst->config(), dst->desc().fSampleCnt > 0) &&
-        gpu->glCaps().isConfigRenderable(src->config(), src->desc().fSampleCnt > 0) &&
-        gpu->glCaps().usesMSAARenderBuffers()) {
-        // ES3 doesn't allow framebuffer blits when the src has MSAA and the configs don't match
-        // or the rects are not the same (not just the same size but have the same edges).
-        if (GrGLCaps::kES_3_0_MSFBOType == gpu->glCaps().msFBOType() &&
-            (src->desc().fSampleCnt > 0 || src->config() != dst->config())) {
-           return false;
-        }
-        if (wouldNeedTempFBO) {
-            *wouldNeedTempFBO = NULL == dst->asRenderTarget() || NULL == src->asRenderTarget();
-        }
-        return true;
-    } else {
-        return false;
-    }
-}
-
-inline bool can_copy_texsubimage(const GrSurface* dst,
-                                 const GrSurface* src,
-                                 const GrGLGpu* gpu,
-                                 bool* wouldNeedTempFBO = NULL) {
-    // Table 3.9 of the ES2 spec indicates the supported formats with CopyTexSubImage
-    // and BGRA isn't in the spec. There doesn't appear to be any extension that adds it. Perhaps
-    // many drivers would allow it to work, but ANGLE does not.
-    if (kGLES_GrGLStandard == gpu->glStandard() && gpu->glCaps().bgraIsInternalFormat() &&
-        (kBGRA_8888_GrPixelConfig == dst->config() || kBGRA_8888_GrPixelConfig == src->config())) {
-        return false;
-    }
-    const GrGLRenderTarget* dstRT = static_cast<const GrGLRenderTarget*>(dst->asRenderTarget());
-    // If dst is multisampled (and uses an extension where there is a separate MSAA renderbuffer)
-    // then we don't want to copy to the texture but to the MSAA buffer.
-    if (dstRT && dstRT->renderFBOID() != dstRT->textureFBOID()) {
-        return false;
-    }
-    const GrGLRenderTarget* srcRT = static_cast<const GrGLRenderTarget*>(src->asRenderTarget());
-    // If the src is multisampled (and uses an extension where there is a separate MSAA
-    // renderbuffer) then it is an invalid operation to call CopyTexSubImage
-    if (srcRT && srcRT->renderFBOID() != srcRT->textureFBOID()) {
-        return false;
-    }
-    if (gpu->glCaps().isConfigRenderable(src->config(), src->desc().fSampleCnt > 0) &&
-        dst->asTexture() &&
-        dst->origin() == src->origin() &&
-        !GrPixelConfigIsCompressed(src->config())) {
-        if (wouldNeedTempFBO) {
-            *wouldNeedTempFBO = NULL == src->asRenderTarget();
-        }
-        return true;
-    } else {
-        return false;
-    }
-}
-
-}
-
-// If a temporary FBO was created, its non-zero ID is returned. The viewport that the copy rect is
-// relative to is output.
-GrGLuint GrGLGpu::bindSurfaceAsFBO(GrSurface* surface, GrGLenum fboTarget, GrGLIRect* viewport) {
-    GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(surface->asRenderTarget());
-    GrGLuint tempFBOID;
-    if (NULL == rt) {
-        SkASSERT(surface->asTexture());
-        GrGLuint texID = static_cast<GrGLTexture*>(surface->asTexture())->textureID();
-        GR_GL_CALL(this->glInterface(), GenFramebuffers(1, &tempFBOID));
-        fGPUStats.incRenderTargetBinds();
-        GR_GL_CALL(this->glInterface(), BindFramebuffer(fboTarget, tempFBOID));
-        GR_GL_CALL(this->glInterface(), FramebufferTexture2D(fboTarget,
-                                                             GR_GL_COLOR_ATTACHMENT0,
-                                                             GR_GL_TEXTURE_2D,
-                                                             texID,
-                                                             0));
-        viewport->fLeft = 0;
-        viewport->fBottom = 0;
-        viewport->fWidth = surface->width();
-        viewport->fHeight = surface->height();
-    } else {
-        tempFBOID = 0;
-        fGPUStats.incRenderTargetBinds();
-        GR_GL_CALL(this->glInterface(), BindFramebuffer(fboTarget, rt->renderFBOID()));
-        *viewport = rt->getViewport();
-    }
-    return tempFBOID;
-}
-
-bool GrGLGpu::initCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) {
-    // In here we look for opportunities to use CopyTexSubImage, or fbo blit. If neither are
-    // possible and we return false to fallback to creating a render target dst for render-to-
-    // texture. This code prefers CopyTexSubImage to fbo blit and avoids triggering temporary fbo
-    // creation. It isn't clear that avoiding temporary fbo creation is actually optimal.
-
-    // Check for format issues with glCopyTexSubImage2D
-    if (kGLES_GrGLStandard == this->glStandard() && this->glCaps().bgraIsInternalFormat() &&
-        kBGRA_8888_GrPixelConfig == src->config()) {
-        // glCopyTexSubImage2D doesn't work with this config. If the bgra can be used with fbo blit
-        // then we set up for that, otherwise fail.
-        if (this->caps()->isConfigRenderable(kBGRA_8888_GrPixelConfig, false)) {
-            desc->fOrigin = kDefault_GrSurfaceOrigin;
-            desc->fFlags = kRenderTarget_GrSurfaceFlag | kNoStencil_GrSurfaceFlag;
-            desc->fConfig = kBGRA_8888_GrPixelConfig;
-            return true;
-        }
-        return false;
-    } else if (NULL == src->asRenderTarget()) {
-        // CopyTexSubImage2D or fbo blit would require creating a temp fbo for the src.
-        return false;
-    }
-
-    const GrGLRenderTarget* srcRT = static_cast<const GrGLRenderTarget*>(src->asRenderTarget());
-    if (srcRT && srcRT->renderFBOID() != srcRT->textureFBOID()) {
-        // It's illegal to call CopyTexSubImage2D on a MSAA renderbuffer. Set up for FBO blit or
-        // fail.
-        if (this->caps()->isConfigRenderable(src->config(), false)) {
-            desc->fOrigin = kDefault_GrSurfaceOrigin;
-            desc->fFlags = kRenderTarget_GrSurfaceFlag | kNoStencil_GrSurfaceFlag;
-            desc->fConfig = src->config();
-            return true;
-        }
-        return false;
-    }
-
-    // We'll do a CopyTexSubImage. Make the dst a plain old texture.
-    desc->fConfig = src->config();
-    desc->fOrigin = src->origin();
-    desc->fFlags = kNone_GrSurfaceFlags;
-    return true;
-}
-
-bool GrGLGpu::copySurface(GrSurface* dst,
-                          GrSurface* src,
-                          const SkIRect& srcRect,
-                          const SkIPoint& dstPoint) {
-    bool copied = false;
-    if (can_copy_texsubimage(dst, src, this)) {
-        GrGLuint srcFBO;
-        GrGLIRect srcVP;
-        srcFBO = this->bindSurfaceAsFBO(src, GR_GL_FRAMEBUFFER, &srcVP);
-        GrGLTexture* dstTex = static_cast<GrGLTexture*>(dst->asTexture());
-        SkASSERT(dstTex);
-        // We modified the bound FBO
-        fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID;
-        GrGLIRect srcGLRect;
-        srcGLRect.setRelativeTo(srcVP,
-                                srcRect.fLeft,
-                                srcRect.fTop,
-                                srcRect.width(),
-                                srcRect.height(),
-                                src->origin());
-
-        this->setScratchTextureUnit();
-        GL_CALL(BindTexture(GR_GL_TEXTURE_2D, dstTex->textureID()));
-        GrGLint dstY;
-        if (kBottomLeft_GrSurfaceOrigin == dst->origin()) {
-            dstY = dst->height() - (dstPoint.fY + srcGLRect.fHeight);
-        } else {
-            dstY = dstPoint.fY;
-        }
-        GL_CALL(CopyTexSubImage2D(GR_GL_TEXTURE_2D, 0,
-                                  dstPoint.fX, dstY,
-                                  srcGLRect.fLeft, srcGLRect.fBottom,
-                                  srcGLRect.fWidth, srcGLRect.fHeight));
-        copied = true;
-        if (srcFBO) {
-            GL_CALL(DeleteFramebuffers(1, &srcFBO));
-        }
-    } else if (can_blit_framebuffer(dst, src, this)) {
-        SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY,
-                                            srcRect.width(), srcRect.height());
-        bool selfOverlap = false;
-        if (dst == src) {
-            selfOverlap = SkIRect::IntersectsNoEmptyCheck(dstRect, srcRect);
-        }
-
-        if (!selfOverlap) {
-            GrGLuint dstFBO;
-            GrGLuint srcFBO;
-            GrGLIRect dstVP;
-            GrGLIRect srcVP;
-            dstFBO = this->bindSurfaceAsFBO(dst, GR_GL_DRAW_FRAMEBUFFER, &dstVP);
-            srcFBO = this->bindSurfaceAsFBO(src, GR_GL_READ_FRAMEBUFFER, &srcVP);
-            // We modified the bound FBO
-            fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID;
-            GrGLIRect srcGLRect;
-            GrGLIRect dstGLRect;
-            srcGLRect.setRelativeTo(srcVP,
-                                    srcRect.fLeft,
-                                    srcRect.fTop,
-                                    srcRect.width(),
-                                    srcRect.height(),
-                                    src->origin());
-            dstGLRect.setRelativeTo(dstVP,
-                                    dstRect.fLeft,
-                                    dstRect.fTop,
-                                    dstRect.width(),
-                                    dstRect.height(),
-                                    dst->origin());
-
-            // BlitFrameBuffer respects the scissor, so disable it.
-            this->disableScissor();
-
-            GrGLint srcY0;
-            GrGLint srcY1;
-            // Does the blit need to y-mirror or not?
-            if (src->origin() == dst->origin()) {
-                srcY0 = srcGLRect.fBottom;
-                srcY1 = srcGLRect.fBottom + srcGLRect.fHeight;
-            } else {
-                srcY0 = srcGLRect.fBottom + srcGLRect.fHeight;
-                srcY1 = srcGLRect.fBottom;
-            }
-            GL_CALL(BlitFramebuffer(srcGLRect.fLeft,
-                                    srcY0,
-                                    srcGLRect.fLeft + srcGLRect.fWidth,
-                                    srcY1,
-                                    dstGLRect.fLeft,
-                                    dstGLRect.fBottom,
-                                    dstGLRect.fLeft + dstGLRect.fWidth,
-                                    dstGLRect.fBottom + dstGLRect.fHeight,
-                                    GR_GL_COLOR_BUFFER_BIT, GR_GL_NEAREST));
-            if (dstFBO) {
-                GL_CALL(DeleteFramebuffers(1, &dstFBO));
-            }
-            if (srcFBO) {
-                GL_CALL(DeleteFramebuffers(1, &srcFBO));
-            }
-            copied = true;
-        }
-    }
-    return copied;
-}
-
-bool GrGLGpu::canCopySurface(const GrSurface* dst,
-                             const GrSurface* src,
-                             const SkIRect& srcRect,
-                             const SkIPoint& dstPoint) {
-    // This mirrors the logic in onCopySurface.  We prefer our base makes the copy if we need to
-    // create a temp fbo. TODO verify the assumption that temp fbos are expensive; it may not be
-    // true at all.
-    bool wouldNeedTempFBO = false;
-    if (can_copy_texsubimage(dst, src, this, &wouldNeedTempFBO) && !wouldNeedTempFBO) {
-        return true;
-    }
-    if (can_blit_framebuffer(dst, src, this, &wouldNeedTempFBO) && !wouldNeedTempFBO) {
-        if (dst == src) {
-            SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY,
-                                                srcRect.width(), srcRect.height());
-            if(!SkIRect::IntersectsNoEmptyCheck(dstRect, srcRect)) {
-                return true;
-            }
-        } else {
-            return true;
-        }
-    }
-    return false;
-}
-
-void GrGLGpu::didAddGpuTraceMarker() {
-    if (this->caps()->gpuTracingSupport()) {
-        const GrTraceMarkerSet& markerArray = this->getActiveTraceMarkers();
-        SkString markerString = markerArray.toStringLast();
-        GL_CALL(PushGroupMarker(0, markerString.c_str()));
-    }
-}
-
-void GrGLGpu::didRemoveGpuTraceMarker() {
-    if (this->caps()->gpuTracingSupport()) {
-        GL_CALL(PopGroupMarker());
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-GrGLAttribArrayState* GrGLGpu::HWGeometryState::bindArrayAndBuffersToDraw(
-                                                GrGLGpu* gpu,
-                                                const GrGLVertexBuffer* vbuffer,
-                                                const GrGLIndexBuffer* ibuffer) {
-    SkASSERT(vbuffer);
-    GrGLAttribArrayState* attribState;
-
-    // We use a vertex array if we're on a core profile and the verts are in a VBO.
-    if (gpu->glCaps().isCoreProfile() && !vbuffer->isCPUBacked()) {
-        if (NULL == fVBOVertexArray || fVBOVertexArray->wasDestroyed()) {
-            SkSafeUnref(fVBOVertexArray);
-            GrGLuint arrayID;
-            GR_GL_CALL(gpu->glInterface(), GenVertexArrays(1, &arrayID));
-            int attrCount = gpu->glCaps().maxVertexAttributes();
-            fVBOVertexArray = SkNEW_ARGS(GrGLVertexArray, (gpu, arrayID, attrCount));
-        }
-        attribState = fVBOVertexArray->bindWithIndexBuffer(ibuffer);
-    } else {
-        if (ibuffer) {
-            this->setIndexBufferIDOnDefaultVertexArray(gpu, ibuffer->bufferID());
-        } else {
-            this->setVertexArrayID(gpu, 0);
-        }
-        int attrCount = gpu->glCaps().maxVertexAttributes();
-        if (fDefaultVertexArrayAttribState.count() != attrCount) {
-            fDefaultVertexArrayAttribState.resize(attrCount);
-        }
-        attribState = &fDefaultVertexArrayAttribState;
-    }
-    return attribState;
-}