Creating functions for uploading a mipmapped texture.

src/gpu/gl/GrGLGpu.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLGpu_DEFINED
 #define GrGLGpu_DEFINED
 
 #include "GrGLContext.h"
 #include "GrGLIRect.h"
 #include "GrGLIndexBuffer.h"
 #include "GrGLPathRendering.h"
 #include "GrGLProgram.h"
 #include "GrGLRenderTarget.h"
 #include "GrGLStencilAttachment.h"
 #include "GrGLTexture.h"
 #include "GrGLVertexArray.h"
 #include "GrGLVertexBuffer.h"
 #include "GrGpu.h"
+#include "SkMipMapLevel.h"
 #include "GrPipelineBuilder.h"
+#include "SkTArray.h"
 #include "GrXferProcessor.h"
 #include "SkTypes.h"
 
 class GrPipeline;
 class GrNonInstancedVertices;
 
 #ifdef SK_DEVELOPER
 #define PROGRAM_CACHE_STATS
 #endif
 
@@ skipping 22 matching lines @@
     void discard(GrRenderTarget*) override;
 
     // Used by GrGLProgram to configure OpenGL state.
     void bindTexture(int unitIdx, const GrTextureParams& params, GrGLTexture* texture);
 
     bool onGetReadPixelsInfo(GrSurface* srcSurface, int readWidth, int readHeight, size_t rowBytes,
                              GrPixelConfig readConfig, DrawPreference*,
                              ReadPixelTempDrawInfo*) override;
 
     bool onGetWritePixelsInfo(GrSurface* dstSurface, int width, int height,
-                              size_t rowBytes, GrPixelConfig srcConfig, DrawPreference*,
+                              GrPixelConfig srcConfig, DrawPreference*,
                               WritePixelTempDrawInfo*) override;
 
     bool initCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) const override;
 
     // These functions should be used to bind GL objects. They track the GL state and skip redundant
     // bindings. Making the equivalent glBind calls directly will confuse the state tracking.
     void bindVertexArray(GrGLuint id) {
         fHWGeometryState.setVertexArrayID(this, id);
     }
     void bindIndexBufferAndDefaultVertexArray(GrGLuint id) {
@@ skipping 40 matching lines @@
 
 private:
     GrGLGpu(GrGLContext* ctx, GrContext* context);
 
     // GrGpu overrides
     void onResetContext(uint32_t resetBits) override;
 
     void xferBarrier(GrRenderTarget*, GrXferBarrierType) override;
 
     GrTexture* onCreateTexture(const GrSurfaceDesc& desc, GrGpuResource::LifeCycle lifeCycle,
-                               const void* srcData, size_t rowBytes) override;
+                               const SkTArray<SkMipMapLevel>& texels) override;
     GrTexture* onCreateCompressedTexture(const GrSurfaceDesc& desc,
                                          GrGpuResource::LifeCycle lifeCycle,
-                                         const void* srcData) override;
+                                         const SkTArray<SkMipMapLevel>& texels) override;
+
     GrVertexBuffer* onCreateVertexBuffer(size_t size, bool dynamic) override;
     GrIndexBuffer* onCreateIndexBuffer(size_t size, bool dynamic) override;
     GrTexture* onWrapBackendTexture(const GrBackendTextureDesc&, GrWrapOwnership) override;
     GrRenderTarget* onWrapBackendRenderTarget(const GrBackendRenderTargetDesc&,
                                               GrWrapOwnership) override;
     // Given a GrPixelConfig return the index into the stencil format array on GrGLCaps to a
     // compatible stencil format.
     int getCompatibleStencilIndex(GrPixelConfig config);
 
     void onClear(GrRenderTarget*, const SkIRect& rect, GrColor color) override;
 
     void onClearStencilClip(GrRenderTarget*, const SkIRect& rect, bool insideClip) override;
 
     bool onReadPixels(GrSurface*,
                       int left, int top,
                       int width, int height,
                       GrPixelConfig,
                       void* buffer,
                       size_t rowBytes) override;
 
     bool onWritePixels(GrSurface*,
                        int left, int top, int width, int height,
-                       GrPixelConfig config, const void* buffer,
-                       size_t rowBytes) override;
+                       GrPixelConfig config,
+                       const SkTArray<SkMipMapLevel>& texels) override;
 
     void onResolveRenderTarget(GrRenderTarget* target) override;
 
     void onDraw(const DrawArgs&, const GrNonInstancedVertices&) override;
 
     bool onCopySurface(GrSurface* dst,
                        GrSurface* src,
                        const SkIRect& srcRect,
                        const SkIPoint& dstPoint) override;
 
@@ skipping 84 matching lines @@
 
     void initFSAASupport();
 
     // determines valid stencil formats
     void initStencilFormats();
 
     // sets a texture unit to use for texture operations other than binding a texture to a program.
     // ensures that such operations don't negatively interact with tracking bound textures.
     void setScratchTextureUnit();
 
+    // colocates all samples at pixel center for render target, if MSAA.
+    // allows drawing coverage based AA shapes in MSAA mode.
+    void setColocatedSampleLocations(GrRenderTarget* rt, bool useColocatedSampleLocations);
+
     // bounds is region that may be modified and therefore has to be resolved.
     // nullptr means whole target. Can be an empty rect.
     void flushRenderTarget(GrGLRenderTarget*, const SkIRect* bounds);
 
     void flushStencil(const GrStencilSettings&);
-    void flushHWAAState(GrRenderTarget* rt, bool useHWAA);
+    void flushHWAAState(GrRenderTarget* rt, bool useHWAA, bool stencilEnabled);
 
     bool configToGLFormats(GrPixelConfig config,
                            bool getSizedInternal,
                            GrGLenum* internalFormat,
                            GrGLenum* externalFormat,
                            GrGLenum* externalType) const;
     // helper for onCreateTexture and writeTexturePixels
     bool uploadTexData(const GrSurfaceDesc& desc,
+                       GrGLenum target,
                        bool isNewTexture,
                        int left, int top, int width, int height,
                        GrPixelConfig dataConfig,
-                       const void* data,
-                       size_t rowBytes);
+                       const SkTArray<SkMipMapLevel>& texels);
 
     // helper for onCreateCompressedTexture. If width and height are
     // set to -1, then this function will use desc.fWidth and desc.fHeight
     // for the size of the data. The isNewTexture flag should be set to true
     // whenever a new texture needs to be created. Otherwise, we assume that
     // the texture is already in GPU memory and that it's going to be updated
     // with new data.
     bool uploadCompressedTexData(const GrSurfaceDesc& desc,
-                                 const void* data,
+                                 GrGLenum target,
+                                 const SkTArray<SkMipMapLevel>& texels,
                                  bool isNewTexture = true,
                                  int left = 0, int top = 0,
                                  int width = -1, int height = -1);
 
     bool createRenderTargetObjects(const GrSurfaceDesc&, GrGpuResource::LifeCycle lifeCycle,
-                                   GrGLuint texID, GrGLRenderTarget::IDDesc*);
+                                   GrGLenum textureTarget, GrGLuint texID,
+                                   GrGLRenderTarget::IDDesc*);
 
     enum TempFBOTarget {
         kSrc_TempFBOTarget,
         kDst_TempFBOTarget
     };
 
-    GrGLuint bindSurfaceAsFBO(GrSurface* surface, GrGLenum fboTarget, GrGLIRect* viewport,
+    // Binds a surface as a FBO for a copy operation. If the surface already owns an FBO ID then
+    // that ID is bound. If not the surface is temporarily bound to a FBO and that FBO is bound.
+    // This must be paired with a call to unbindSurfaceFBOForCopy().
+    void bindSurfaceFBOForCopy(GrSurface* surface, GrGLenum fboTarget, GrGLIRect* viewport,
                               TempFBOTarget tempFBOTarget);
 
-    void unbindTextureFromFBO(GrGLenum fboTarget);
+    // Must be called if bindSurfaceFBOForCopy was used to bind a surface for copying.
+    void unbindTextureFBOForCopy(GrGLenum fboTarget, GrSurface* surface);
 
     SkAutoTUnref<GrGLContext>  fGLContext;
 
     void createCopyProgram();
 
     // GL program-related state
     ProgramCache*               fProgramCache;
 
     ///////////////////////////////////////////////////////////////////////////
     ///@name Caching of GL State
@@ skipping 184 matching lines @@
 
     // Mapping of pixel configs to known supported stencil formats to be used
     // when adding a stencil buffer to a framebuffer.
     int fPixelConfigToStencilIndex[kGrPixelConfigCnt];
 
     typedef GrGpu INHERITED;
     friend class GrGLPathRendering; // For accessing setTextureUnit.
 };
 
 #endif