adding preabandon flag to DM

src/gpu/GrContext.cpp

 
 /*
  * 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 "GrContext.h"
 
@@ skipping 34 matching lines @@
 #include "effects/GrDashingEffect.h"
 #include "effects/GrSingleTextureEffect.h"
 
 static const size_t DRAW_BUFFER_VBPOOL_BUFFER_SIZE = 1 << 15;
 static const int DRAW_BUFFER_VBPOOL_PREALLOC_BUFFERS = 4;
 
 static const size_t DRAW_BUFFER_IBPOOL_BUFFER_SIZE = 1 << 11;
 static const int DRAW_BUFFER_IBPOOL_PREALLOC_BUFFERS = 4;
 
 #define ASSERT_OWNED_RESOURCE(R) SkASSERT(!(R) || (R)->getContext() == this)
+#define RETURN_IF_ABANDONED if (!fDrawBuffer) { return; }
+#define RETURN_FALSE_IF_ABANDONED if (!fDrawBuffer) { return false; }
+#define RETURN_NULL_IF_ABANDONED if (!fDrawBuffer) { return NULL; }
 
 class GrContext::AutoCheckFlush {
 public:
     AutoCheckFlush(GrContext* context) : fContext(context) { SkASSERT(context); }
 
     ~AutoCheckFlush() {
         if (fContext->fFlushToReduceCacheSize) {
             fContext->flush();
         }
     }
@@ skipping 168 matching lines @@
 bool GrContext::isConfigTexturable(GrPixelConfig config) const {
     return fGpu->caps()->isConfigTexturable(config);
 }
 
 bool GrContext::npotTextureTileSupport() const {
     return fGpu->caps()->npotTextureTileSupport();
 }
 
 GrTexture* GrContext::createTexture(const GrSurfaceDesc& desc, bool budgeted, const void* srcData,
                                     size_t rowBytes) {
+    RETURN_NULL_IF_ABANDONED
     if ((desc.fFlags & kRenderTarget_GrSurfaceFlag) &&
         !this->isConfigRenderable(desc.fConfig, desc.fSampleCnt > 0)) {
         return NULL;
     }
     if (!GrPixelConfigIsCompressed(desc.fConfig)) {
         static const uint32_t kFlags = kExact_ScratchTextureFlag |
                                        kNoCreate_ScratchTextureFlag;
         if (GrTexture* texture = this->internalRefScratchTexture(desc, kFlags)) {
             if (!srcData || texture->writePixels(0, 0, desc.fWidth, desc.fHeight, desc.fConfig,
                                                  srcData, rowBytes)) {
                 if (!budgeted) {
                     texture->resourcePriv().makeUnbudgeted();
                 }
                 return texture;
             }
             texture->unref();
         }
     }
     return fGpu->createTexture(desc, budgeted, srcData, rowBytes);
 }
 
 GrTexture* GrContext::refScratchTexture(const GrSurfaceDesc& desc, ScratchTexMatch match,
                                         bool calledDuringFlush) {
+    RETURN_NULL_IF_ABANDONED
     // Currently we don't recycle compressed textures as scratch.
     if (GrPixelConfigIsCompressed(desc.fConfig)) {
         return NULL;
     } else {
         uint32_t flags = 0;
         if (kExact_ScratchTexMatch == match) {
             flags |= kExact_ScratchTextureFlag;
         }
         if (calledDuringFlush) {
             flags |= kNoPendingIO_ScratchTextureFlag;
@@ skipping 61 matching lines @@
     return fGpu->caps()->maxRenderTargetSize();
 }
 
 int GrContext::getMaxSampleCount() const {
     return fGpu->caps()->maxSampleCount();
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 GrTexture* GrContext::wrapBackendTexture(const GrBackendTextureDesc& desc) {
+    RETURN_NULL_IF_ABANDONED
     return fGpu->wrapBackendTexture(desc);
 }
 
 GrRenderTarget* GrContext::wrapBackendRenderTarget(const GrBackendRenderTargetDesc& desc) {
+    RETURN_NULL_IF_ABANDONED
     return fGpu->wrapBackendRenderTarget(desc);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 void GrContext::clear(const SkIRect* rect,
                       const GrColor color,
                       bool canIgnoreRect,
                       GrRenderTarget* renderTarget) {
+    RETURN_IF_ABANDONED
     ASSERT_OWNED_RESOURCE(renderTarget);
     SkASSERT(renderTarget);
 
     AutoCheckFlush acf(this);
     GR_CREATE_TRACE_MARKER_CONTEXT("GrContext::clear", this);
     GrDrawTarget* target = this->prepareToDraw();
     if (NULL == target) {
         return;
     }
     target->clear(rect, color, canIgnoreRect, renderTarget);
 }
 
 void GrContext::drawPaint(GrRenderTarget* rt,
                           const GrClip& clip,
                           const GrPaint& origPaint,
                           const SkMatrix& viewMatrix) {
+    RETURN_IF_ABANDONED
     // set rect to be big enough to fill the space, but not super-huge, so we
     // don't overflow fixed-point implementations
     SkRect r;
     r.setLTRB(0, 0,
               SkIntToScalar(rt->width()),
               SkIntToScalar(rt->height()));
     SkTCopyOnFirstWrite<GrPaint> paint(origPaint);
 
     // by definition this fills the entire clip, no need for AA
     if (paint->isAntiAlias()) {
@@ skipping 114 matching lines @@
     return point.fX >= rect.fLeft && point.fX <= rect.fRight &&
            point.fY >= rect.fTop && point.fY <= rect.fBottom;
 }
 
 void GrContext::drawRect(GrRenderTarget* rt,
                          const GrClip& clip,
                          const GrPaint& paint,
                          const SkMatrix& viewMatrix,
                          const SkRect& rect,
                          const GrStrokeInfo* strokeInfo) {
+    RETURN_IF_ABANDONED
     if (strokeInfo && strokeInfo->isDashed()) {
         SkPath path;
         path.addRect(rect);
         this->drawPath(rt, clip, paint, viewMatrix, path, *strokeInfo);
         return;
     }
 
     AutoCheckFlush acf(this);
     GrPipelineBuilder pipelineBuilder;
     GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
@@ skipping 114 matching lines @@
     }
 }
 
 void GrContext::drawNonAARectToRect(GrRenderTarget* rt,
                                     const GrClip& clip,
                                     const GrPaint& paint,
                                     const SkMatrix& viewMatrix,
                                     const SkRect& rectToDraw,
                                     const SkRect& localRect,
                                     const SkMatrix* localMatrix) {
+    RETURN_IF_ABANDONED
     AutoCheckFlush acf(this);
     GrPipelineBuilder pipelineBuilder;
     GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
     if (NULL == target) {
         return;
     }
 
     GR_CREATE_TRACE_MARKER("GrContext::drawRectToRect", target);
 
     target->drawRect(&pipelineBuilder,
@@ skipping 32 matching lines @@
                              const GrClip& clip,
                              const GrPaint& paint,
                              const SkMatrix& viewMatrix,
                              GrPrimitiveType primitiveType,
                              int vertexCount,
                              const SkPoint positions[],
                              const SkPoint texCoords[],
                              const GrColor colors[],
                              const uint16_t indices[],
                              int indexCount) {
+    RETURN_IF_ABANDONED
     AutoCheckFlush acf(this);
     GrPipelineBuilder pipelineBuilder;
     GrDrawTarget::AutoReleaseGeometry geo; // must be inside AutoCheckFlush scope
 
     GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
     if (NULL == target) {
         return;
     }
 
     GR_CREATE_TRACE_MARKER("GrContext::drawVertices", target);
@@ skipping 38 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrContext::drawRRect(GrRenderTarget*rt,
                           const GrClip& clip,
                           const GrPaint& paint,
                           const SkMatrix& viewMatrix,
                           const SkRRect& rrect,
                           const GrStrokeInfo& strokeInfo) {
+    RETURN_IF_ABANDONED
     if (rrect.isEmpty()) {
        return;
     }
 
     if (strokeInfo.isDashed()) {
         SkPath path;
         path.addRRect(rrect);
         this->drawPath(rt, clip, paint, viewMatrix, path, strokeInfo);
         return;
     }
@@ skipping 25 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrContext::drawDRRect(GrRenderTarget* rt,
                            const GrClip& clip,
                            const GrPaint& paint,
                            const SkMatrix& viewMatrix,
                            const SkRRect& outer,
                            const SkRRect& inner) {
+    RETURN_IF_ABANDONED
     if (outer.isEmpty()) {
        return;
     }
 
     AutoCheckFlush acf(this);
     GrPipelineBuilder pipelineBuilder;
     GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
 
     GR_CREATE_TRACE_MARKER("GrContext::drawDRRect", target);
 
@@ skipping 17 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrContext::drawOval(GrRenderTarget* rt,
                          const GrClip& clip,
                          const GrPaint& paint,
                          const SkMatrix& viewMatrix,
                          const SkRect& oval,
                          const GrStrokeInfo& strokeInfo) {
+    RETURN_IF_ABANDONED
     if (oval.isEmpty()) {
        return;
     }
 
     if (strokeInfo.isDashed()) {
         SkPath path;
         path.addOval(oval);
         this->drawPath(rt, clip, paint, viewMatrix, path, strokeInfo);
         return;
     }
@@ skipping 76 matching lines @@
 
     return allEq || allGoE1;
 }
 
 void GrContext::drawPath(GrRenderTarget* rt,
                          const GrClip& clip,
                          const GrPaint& paint,
                          const SkMatrix& viewMatrix,
                          const SkPath& path,
                          const GrStrokeInfo& strokeInfo) {
-
+    RETURN_IF_ABANDONED
     if (path.isEmpty()) {
        if (path.isInverseFillType()) {
            this->drawPaint(rt, clip, paint, viewMatrix);
        }
        return;
     }
 
     GrColor color = paint.getColor();
     if (strokeInfo.isDashed()) {
         SkPoint pts[2];
@@ skipping 70 matching lines @@
     }
 }
 
 void GrContext::internalDrawPath(GrDrawTarget* target,
                                  GrPipelineBuilder* pipelineBuilder,
                                  const SkMatrix& viewMatrix,
                                  GrColor color,
                                  bool useAA,
                                  const SkPath& path,
                                  const GrStrokeInfo& strokeInfo) {
+    RETURN_IF_ABANDONED
     SkASSERT(!path.isEmpty());
 
     GR_CREATE_TRACE_MARKER("GrContext::internalDrawPath", target);
 
 
     // An Assumption here is that path renderer would use some form of tweaking
     // the src color (either the input alpha or in the frag shader) to implement
     // aa. If we have some future driver-mojo path AA that can do the right
     // thing WRT to the blend then we'll need some query on the PR.
     bool useCoverageAA = useAA &&
@@ skipping 70 matching lines @@
     dstPI.fPixels = outPixels;
     dstPI.fRowBytes = outRowBytes;
 
     return srcPI.convertPixelsTo(&dstPI, width, height);
 }
 
 bool GrContext::writeSurfacePixels(GrSurface* surface,
                                    int left, int top, int width, int height,
                                    GrPixelConfig srcConfig, const void* buffer, size_t rowBytes,
                                    uint32_t pixelOpsFlags) {
-
+    RETURN_FALSE_IF_ABANDONED
     {
         GrTexture* texture = NULL;
         if (!(kUnpremul_PixelOpsFlag & pixelOpsFlags) && (texture = surface->asTexture()) &&
             fGpu->canWriteTexturePixels(texture, srcConfig)) {
 
             if (!(kDontFlush_PixelOpsFlag & pixelOpsFlags) &&
                 surface->surfacePriv().hasPendingIO()) {
                 this->flush();
             }
             return fGpu->writeTexturePixels(texture, left, top, width, height,
@@ skipping 109 matching lines @@
     } else {
         SkASSERT(kBGRA_8888_SkColorType == ct);
         return kRGBA_8888_SkColorType;
     }
 }
 
 bool GrContext::readRenderTargetPixels(GrRenderTarget* target,
                                        int left, int top, int width, int height,
                                        GrPixelConfig dstConfig, void* buffer, size_t rowBytes,
                                        uint32_t flags) {
+    RETURN_FALSE_IF_ABANDONED
     ASSERT_OWNED_RESOURCE(target);
     SkASSERT(target);
 
     if (!(kDontFlush_PixelOpsFlag & flags) && target->surfacePriv().hasPendingWrite()) {
         this->flush();
     }
 
     // Determine which conversions have to be applied: flipY, swapRAnd, and/or unpremul.
 
     // If fGpu->readPixels would incur a y-flip cost then we will read the pixels upside down. We'll
@@ skipping 118 matching lines @@
         srcPI.fAlphaType = kPremul_SkAlphaType;
         srcPI.fPixels = buffer;
         srcPI.fRowBytes = rowBytes;
 
         return srcPI.convertPixelsTo(&dstPI, width, height);
     }
     return true;
 }
 
 void GrContext::prepareSurfaceForExternalRead(GrSurface* surface) {
+    RETURN_IF_ABANDONED
     SkASSERT(surface);
     ASSERT_OWNED_RESOURCE(surface);
     if (surface->surfacePriv().hasPendingIO()) {
         this->flush();
     }
     GrRenderTarget* rt = surface->asRenderTarget();
     if (fGpu && rt) {
         fGpu->resolveRenderTarget(rt);
     }
 }
 
 void GrContext::discardRenderTarget(GrRenderTarget* renderTarget) {
+    RETURN_IF_ABANDONED
     SkASSERT(renderTarget);
     ASSERT_OWNED_RESOURCE(renderTarget);
     AutoCheckFlush acf(this);
     GrDrawTarget* target = this->prepareToDraw();
     if (NULL == target) {
         return;
     }
     target->discard(renderTarget);
 }
 
 void GrContext::copySurface(GrSurface* dst, GrSurface* src, const SkIRect& srcRect,
                             const SkIPoint& dstPoint, uint32_t pixelOpsFlags) {
+    RETURN_IF_ABANDONED
     if (NULL == src || NULL == dst) {
         return;
     }
     ASSERT_OWNED_RESOURCE(src);
     ASSERT_OWNED_RESOURCE(dst);
 
     // Since we're going to the draw target and not GPU, no need to check kNoFlush
     // here.
 
     GrDrawTarget* target = this->prepareToDraw();
     if (NULL == target) {
         return;
     }
     target->copySurface(dst, src, srcRect, dstPoint);
 
     if (kFlushWrites_PixelOp & pixelOpsFlags) {
         this->flush();
     }
 }
 
 void GrContext::flushSurfaceWrites(GrSurface* surface) {
+    RETURN_IF_ABANDONED
     if (surface->surfacePriv().hasPendingWrite()) {
         this->flush();
     }
 }
 
 GrDrawTarget* GrContext::prepareToDraw(GrPipelineBuilder* pipelineBuilder,
                                        GrRenderTarget* rt,
                                        const GrClip& clip,
                                        const GrPaint* paint,
                                        const AutoCheckFlush* acf) {
-    if (NULL == fGpu) {
+    if (NULL == fGpu || NULL == fDrawBuffer) {
         return NULL;
     }
 
     ASSERT_OWNED_RESOURCE(rt);
     SkASSERT(rt && paint && acf);
     pipelineBuilder->setFromPaint(*paint, rt, clip);
     return fDrawBuffer;
 }
 
 GrDrawTarget* GrContext::prepareToDraw() {
@@ skipping 171 matching lines @@
     }
 }
 
 void GrContext::removeGpuTraceMarker(const GrGpuTraceMarker* marker) {
     fGpu->removeGpuTraceMarker(marker);
     if (fDrawBuffer) {
         fDrawBuffer->removeGpuTraceMarker(marker);
     }
 }