Add size change notifications to GrResourceCache

src/gpu/GrTexture.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 "GrTexture.h"
@@ skipping 26 matching lines @@
 
         // Note: "this" texture might be freed inside addExistingTextureToCache
         // if it is purged.
         return;
     }
 
     SkASSERT(0 == this->getDeferredRefCount());
     this->INHERITED::internal_dispose();
 }
 
+void GrTexture::dirtyMipMaps(bool mipMapsDirty) {
+    if (mipMapsDirty) {
+        if (kValid_MipMapsStatus == fMipMapsStatus) {
+            fMipMapsStatus = kAllocated_MipMapsStatus;
+        }
+    } else {
+        const bool sizeChanged = kNotAllocated_MipMapsStatus == fMipMapsStatus;
+        fMipMapsStatus = kValid_MipMapsStatus;
+        if (sizeChanged) {
+            // This must not be called until after changing fMipMapsStatus.
+            this->didChangeGpuMemorySize();
+        }
+    }
+}
+
+size_t GrTexture::gpuMemorySize() const {
+    size_t textureSize =  (size_t) fDesc.fWidth *
+                                   fDesc.fHeight *
+                                   GrBytesPerPixel(fDesc.fConfig);
+    if (kNotAllocated_MipMapsStatus != fMipMapsStatus) {
+        // We don't have to worry about the mipmaps being a different size than
+        // we'd expect because we never change fDesc.fWidth/fHeight.
+        textureSize *= 2;
+    }
+    return textureSize;
+}
+
 bool GrTexture::readPixels(int left, int top, int width, int height,
                            GrPixelConfig config, void* buffer,
                            size_t rowBytes, uint32_t pixelOpsFlags) {
     // go through context so that all necessary flushing occurs
     GrContext* context = this->getContext();
     if (NULL == context) {
         return false;
     }
     return context->readTexturePixels(this,
                                       left, top, width, height,
@@ skipping 129 matching lines @@
     return GrResourceKey(cacheID, texture_resource_type(), 0);
 }
 
 bool GrTexture::NeedsResizing(const GrResourceKey& key) {
     return SkToBool(key.getResourceFlags() & kStretchToPOT_TextureFlag);
 }
 
 bool GrTexture::NeedsBilerp(const GrResourceKey& key) {
     return SkToBool(key.getResourceFlags() & kBilerp_TextureFlag);
 }