Splitting of layers for correct intersections

cc/output/geometry_binding.h

 // 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.
 
 #ifndef CC_OUTPUT_GEOMETRY_BINDING_H_
 #define CC_OUTPUT_GEOMETRY_BINDING_H_
 
 #include "base/basictypes.h"
+#include "cc/output/gl_renderer.h"  // For the GLC() macro.
+#include "gpu/command_buffer/client/gles2_interface.h"
 #include "third_party/khronos/GLES2/gl2.h"
+#include "third_party/khronos/GLES2/gl2ext.h"
+#include "ui/gfx/geometry/rect_f.h"
 
 namespace gfx {
-class RectF;
+class QuadF;
+class Quad;
+class QuadIndex;
+class PointF;
 }
-namespace gpu {
-namespace gles2 {
-class GLES2Interface;
-}
-}
+using gpu::gles2::GLES2Interface;

[enne (OOO), 2015/02/12 18:00:26]

style nit: don't use "using" here either

[awoloszyn, 2015/02/23 22:28:26]

Done.

 
 namespace cc {
 
-class GeometryBinding {
- public:
-  GeometryBinding(gpu::gles2::GLES2Interface* gl,
-                  const gfx::RectF& quad_vertex_rect);
-  ~GeometryBinding();
+struct GeometryBindingVertex {
+  float a_position[3];
+  float a_texCoord[2];
+  // Index of the vertex, divide by 4 to have the matrix for this quad.
+  float a_index;
+};
 
-  void PrepareForDraw();
+struct GeometryBindingQuad {
+  GeometryBindingVertex v0, v1, v2, v3;
+};
 
+struct GeometryBindingQuadIndex {
+  uint16 data[6];
+};
+
+class DrawQuad;
+class DrawPolygon;
+
+struct GeometryBinding {
   // All layer shaders share the same attribute locations for the vertex
   // positions and texture coordinates. This allows switching shaders without
   // rebinding attribute arrays.
   static int PositionAttribLocation() { return 0; }
   static int TexCoordAttribLocation() { return 1; }
   static int TriangleIndexAttribLocation() { return 2; }
+};
 
- private:
-  gpu::gles2::GLES2Interface* gl_;
-
-  GLuint quad_vertices_vbo_;
-  GLuint quad_elements_vbo_;
-
-  DISALLOW_COPY_AND_ASSIGN(GeometryBinding);
-};
+void SetupGLContext(gpu::gles2::GLES2Interface* gl,
+                    GLuint quad_elements_vbo,
+                    GLuint quad_vertices_vbo);
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_GEOMETRY_BINDING_H_