cc: Add point-based UV coordinate on TextureLayer

cc/texture_layer_impl.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/texture_layer_impl.h"
 
 #include "base/stringprintf.h"
 #include "cc/layer_tree_impl.h"
 #include "cc/quad_sink.h"
 #include "cc/renderer.h"
 #include "cc/texture_draw_quad.h"
 
 namespace cc {
 
 TextureLayerImpl::TextureLayerImpl(LayerTreeImpl* treeImpl, int id, bool usesMailbox)
     : LayerImpl(treeImpl, id)
     , m_textureId(0)
     , m_externalTextureResource(0)
     , m_premultipliedAlpha(true)
     , m_flipped(true)
-    , m_uvRect(0, 0, 1, 1)
+    , m_uvTopLeft(0.f, 0.f)
+    , m_uvBottomRight(1.f, 1.f)
     , m_hasPendingMailbox(false)
     , m_usesMailbox(usesMailbox)
 {
   m_vertexOpacity[0] = 1.0f;
   m_vertexOpacity[1] = 1.0f;
   m_vertexOpacity[2] = 1.0f;
   m_vertexOpacity[3] = 1.0f;
 }
 
 TextureLayerImpl::~TextureLayerImpl()
@@ skipping 48 matching lines @@
 {
     if (!m_externalTextureResource)
         return;
 
     SharedQuadState* sharedQuadState = quadSink.useSharedQuadState(createSharedQuadState());
     appendDebugBorderQuad(quadSink, sharedQuadState, appendQuadsData);
 
     gfx::Rect quadRect(gfx::Point(), contentBounds());
     gfx::Rect opaqueRect(contentsOpaque() ? quadRect : gfx::Rect());
     scoped_ptr<TextureDrawQuad> quad = TextureDrawQuad::Create();
-    quad->SetNew(sharedQuadState, quadRect, opaqueRect, m_externalTextureResource, m_premultipliedAlpha, m_uvRect, m_vertexOpacity, m_flipped);
+    quad->SetNew(sharedQuadState, quadRect, opaqueRect, m_externalTextureResource, m_premultipliedAlpha, m_uvTopLeft, m_uvBottomRight, m_vertexOpacity, m_flipped);
 
     // Perform explicit clipping on a quad to avoid setting a scissor later.
     if (sharedQuadState->is_clipped && quad->PerformClipping())
         sharedQuadState->is_clipped = false;
     if (!quad->rect.IsEmpty())
         quadSink.append(quad.PassAs<DrawQuad>(), appendQuadsData);
 }
 
 void TextureLayerImpl::didDraw(ResourceProvider* resourceProvider)
 {
@@ skipping 33 matching lines @@
 {
     return "TextureLayer";
 }
 
 bool TextureLayerImpl::canClipSelf() const
 {
     return true;
 }
 
 }  // namespace cc