cc: Add point-based UV coordinate on TextureLayer

cc/software_renderer.cc

 // Copyright 2012 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/software_renderer.h"
 
 #include "base/debug/trace_event.h"
 #include "cc/debug_border_draw_quad.h"
 #include "cc/math_util.h"
 #include "cc/render_pass_draw_quad.h"
@@ skipping 240 matching lines @@
 void SoftwareRenderer::drawTextureQuad(const DrawingFrame& frame, const TextureDrawQuad* quad)
 {
     if (!isSoftwareResource(quad->resource_id)) {
         drawUnsupportedQuad(frame, quad);
         return;
     }
 
     // FIXME: Add support for non-premultiplied alpha.
     ResourceProvider::ScopedReadLockSoftware lock(m_resourceProvider, quad->resource_id);
     const SkBitmap* bitmap = lock.skBitmap();
-    gfx::RectF uvRect = gfx::ScaleRect(quad->uv_rect, bitmap->width(), bitmap->height());
-    SkRect skUvRect = gfx::RectFToSkRect(uvRect);
+    gfx::PointF uv_top_left = gfx::ScalePoint(quad->uv_top_left, bitmap->width(), bitmap->height());

[danakj, 2013/01/11 02:21:51]

you could use BoundingRect here and keep the rest mostly as it was

[Jerome, 2013/01/11 18:00:01]

Done.

+    gfx::PointF uv_bottom_right = gfx::ScalePoint(quad->uv_bottom_right, bitmap->width(), bitmap->height());
+    SkRect skUvRect = SkRect::MakeXYWH(SkFloatToScalar(uv_top_left.x()),
+                                       SkFloatToScalar(uv_top_left.y()),
+                                       SkFloatToScalar(uv_bottom_right.x() - uv_top_left.x()),
+                                       SkFloatToScalar(uv_bottom_right.y() - uv_top_left.y()));
     if (quad->flipped)
         m_skCurrentCanvas->scale(1, -1);
     m_skCurrentCanvas->drawBitmapRectToRect(*bitmap, &skUvRect,
                                             gfx::RectFToSkRect(quadVertexRect()),
                                             &m_skCurrentPaint);
 }
 
 void SoftwareRenderer::drawTileQuad(const DrawingFrame& frame, const TileDrawQuad* quad)
 {
     DCHECK(isSoftwareResource(quad->resource_id));
@@ skipping 96 matching lines @@
 }
 
 void SoftwareRenderer::setVisible(bool visible)
 {
     if (m_visible == visible)
         return;
     m_visible = visible;
 }
 
 }  // namespace cc