Clamp YUV videos to their visible size in the shader

cc/quads/yuv_video_draw_quad.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/quads/yuv_video_draw_quad.h"
 
 #include "base/logging.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "base/values.h"
 #include "cc/base/math_util.h"
 
 namespace cc {
 
 YUVVideoDrawQuad::YUVVideoDrawQuad()
     : y_plane_resource_id(0),
       u_plane_resource_id(0),
       v_plane_resource_id(0),
       a_plane_resource_id(0) {}
 YUVVideoDrawQuad::~YUVVideoDrawQuad() {}
 
 void YUVVideoDrawQuad::SetNew(const SharedQuadState* shared_quad_state,
                               const gfx::Rect& rect,
                               const gfx::Rect& opaque_rect,
                               const gfx::Rect& visible_rect,
                               const gfx::RectF& tex_coord_rect,
+                              const gfx::Size& tex_size,
                               unsigned y_plane_resource_id,
                               unsigned u_plane_resource_id,
                               unsigned v_plane_resource_id,
                               unsigned a_plane_resource_id,
                               ColorSpace color_space) {
   bool needs_blending = false;
   DrawQuad::SetAll(shared_quad_state, DrawQuad::YUV_VIDEO_CONTENT, rect,
                    opaque_rect, visible_rect, needs_blending);
   this->tex_coord_rect = tex_coord_rect;
+  this->tex_size = tex_size;
   this->y_plane_resource_id = y_plane_resource_id;
   this->u_plane_resource_id = u_plane_resource_id;
   this->v_plane_resource_id = v_plane_resource_id;
   this->a_plane_resource_id = a_plane_resource_id;
   this->color_space = color_space;
 }
 
 void YUVVideoDrawQuad::SetAll(const SharedQuadState* shared_quad_state,
                               const gfx::Rect& rect,
                               const gfx::Rect& opaque_rect,
                               const gfx::Rect& visible_rect,
                               bool needs_blending,
                               const gfx::RectF& tex_coord_rect,
+                              const gfx::Size& tex_size,
                               unsigned y_plane_resource_id,
                               unsigned u_plane_resource_id,
                               unsigned v_plane_resource_id,
                               unsigned a_plane_resource_id,
                               ColorSpace color_space) {
   DrawQuad::SetAll(shared_quad_state, DrawQuad::YUV_VIDEO_CONTENT, rect,
                    opaque_rect, visible_rect, needs_blending);
   this->tex_coord_rect = tex_coord_rect;
+  this->tex_size = tex_size;
   this->y_plane_resource_id = y_plane_resource_id;
   this->u_plane_resource_id = u_plane_resource_id;
   this->v_plane_resource_id = v_plane_resource_id;
   this->a_plane_resource_id = a_plane_resource_id;
   this->color_space = color_space;
 }
 
 void YUVVideoDrawQuad::IterateResources(
     const ResourceIteratorCallback& callback) {
   y_plane_resource_id = callback.Run(y_plane_resource_id);
   u_plane_resource_id = callback.Run(u_plane_resource_id);
   v_plane_resource_id = callback.Run(v_plane_resource_id);
   if (a_plane_resource_id)
     a_plane_resource_id = callback.Run(a_plane_resource_id);
 }
 
 const YUVVideoDrawQuad* YUVVideoDrawQuad::MaterialCast(
     const DrawQuad* quad) {
   DCHECK(quad->material == DrawQuad::YUV_VIDEO_CONTENT);
   return static_cast<const YUVVideoDrawQuad*>(quad);
 }
 
 void YUVVideoDrawQuad::ExtendValue(base::debug::TracedValue* value) const {
   MathUtil::AddToTracedValue("tex_coord_rect", tex_coord_rect, value);
+  MathUtil::AddToTracedValue("tex_size", tex_size, value);
   value->SetInteger("y_plane_resource_id", y_plane_resource_id);
   value->SetInteger("u_plane_resource_id", u_plane_resource_id);
   value->SetInteger("v_plane_resource_id", v_plane_resource_id);
   value->SetInteger("a_plane_resource_id", a_plane_resource_id);
 }
 
 }  // namespace cc