Add class GrGLTextureRenderTarget for GL texture/rendertarget objects

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 237 matching lines @@
     return GrDistanceFieldTextContext::Create(this, leakyProperties, enableDistanceFieldFonts);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 GrTexture* GrContext::findAndRefTexture(const GrSurfaceDesc& desc,
                                         const GrCacheID& cacheID,
                                         const GrTextureParams* params) {
     GrResourceKey resourceKey = GrTexturePriv::ComputeKey(fGpu, params, desc, cacheID);
     GrGpuResource* resource = fResourceCache->find(resourceKey);
-    SkSafeRef(resource);
-    return static_cast<GrTexture*>(resource);
+    if (resource) {
+        resource->ref();
+        return static_cast<GrSurface*>(resource)->asTexture();
+    } else {
+        return NULL;
+    }
 }
 
 bool GrContext::isTextureInCache(const GrSurfaceDesc& desc,
                                  const GrCacheID& cacheID,
                                  const GrTextureParams* params) const {
     GrResourceKey resourceKey = GrTexturePriv::ComputeKey(fGpu, params, desc, cacheID);
     return fResourceCache->hasKey(resourceKey);
 }
 
 void GrContext::addStencilBuffer(GrStencilBuffer* sb) {
@@ skipping 194 matching lines @@
             if (calledDuringFlush) {
                 scratchFlags = GrResourceCache2::kRequireNoPendingIO_ScratchFlag;
             } else  if (!(desc->fFlags & kRenderTarget_GrSurfaceFlag)) {
                 // If it is not a render target then it will most likely be populated by
                 // writePixels() which will trigger a flush if the texture has pending IO.
                 scratchFlags = GrResourceCache2::kPreferNoPendingIO_ScratchFlag;
             }
             GrGpuResource* resource = fResourceCache2->findAndRefScratchResource(key, scratchFlags);
             if (resource) {
                 fResourceCache->makeResourceMRU(resource);
-                return static_cast<GrTexture*>(resource);
+                return static_cast<GrSurface*>(resource)->asTexture();
             }
 
             if (kExact_ScratchTexMatch == match) {
                 break;
             }
             // We had a cache miss and we are in approx mode, relax the fit of the flags.
 
             // We no longer try to reuse textures that were previously used as render targets in
             // situations where no RT is needed; doing otherwise can confuse the video driver and
             // cause significant performance problems in some cases.
@@ skipping 1297 matching lines @@
     fResourceCache->printStats();
 }
 #endif
 
 #if GR_GPU_STATS
 const GrContext::GPUStats* GrContext::gpuStats() const {
     return fGpu->gpuStats();
 }
 #endif