cc: Clamp texture coordinates in all tile shaders

cc/shader.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_SHADER_H_
 #define CC_SHADER_H_
 
 #include "third_party/skia/include/core/SkColorPriv.h"
 #include <string>
 
@@ skipping 124 matching lines @@
     int alphaLocation() const { return m_alphaLocation; }
     int edgeLocation() const { return -1; }
     int fragmentTexTransformLocation() const { return -1; }
     int samplerLocation() const { return m_samplerLocation; }
 
 private:
     int m_samplerLocation;
     int m_alphaLocation;
 };
 
+class FragmentTexClampAlphaBinding {
+public:
+    FragmentTexClampAlphaBinding();
+
+    void init(WebKit::WebGraphicsContext3D*, unsigned program, bool usingBindUniform, int* baseUniformIndex);
+    int alphaLocation() const { return m_alphaLocation; }
+    int edgeLocation() const { return -1; }
+    int fragmentTexTransformLocation() const { return m_fragmentTexTransformLocation; }
+    int samplerLocation() const { return m_samplerLocation; }
+
+private:
+    int m_samplerLocation;
+    int m_alphaLocation;
+    int m_fragmentTexTransformLocation;
+};
+
 class FragmentTexOpaqueBinding {
 public:
     FragmentTexOpaqueBinding();
 
     void init(WebKit::WebGraphicsContext3D*, unsigned program, bool usingBindUniform, int* baseUniformIndex);
     int alphaLocation() const { return -1; }
     int edgeLocation() const { return -1; }
     int fragmentTexTransformLocation() const { return -1; }
     int samplerLocation() const { return m_samplerLocation; }
 
 private:
     int m_samplerLocation;
 };
 
+class FragmentTexClampOpaqueBinding {
+public:
+    FragmentTexClampOpaqueBinding();
+
+    void init(WebKit::WebGraphicsContext3D*, unsigned program, bool usingBindUniform, int* baseUniformIndex);
+    int alphaLocation() const { return -1; }
+    int edgeLocation() const { return -1; }
+    int fragmentTexTransformLocation() const { return m_fragmentTexTransformLocation; }
+    int samplerLocation() const { return m_samplerLocation; }
+
+private:
+    int m_samplerLocation;
+    int m_fragmentTexTransformLocation;
+};
+
 class FragmentShaderRGBATexFlipVaryingAlpha : public FragmentTexOpaqueBinding {
 public:
     std::string getShaderString() const;
 };
 
 class FragmentShaderRGBATexVaryingAlpha : public FragmentTexOpaqueBinding {
 public:
     std::string getShaderString() const;
 };
 
 class FragmentShaderRGBATexAlpha : public FragmentTexAlphaBinding {
 public:
     std::string getShaderString() const;
 };
 
+class FragmentShaderRGBATexClampAlpha : public FragmentTexClampAlphaBinding {
+public:
+    std::string getShaderString() const;
+};
+
 class FragmentShaderRGBATexRectFlipVaryingAlpha : public FragmentTexAlphaBinding {
 public:
     std::string getShaderString() const;
 };
 
 class FragmentShaderRGBATexRectVaryingAlpha : public FragmentTexAlphaBinding {
 public:
     std::string getShaderString() const;
 };
 
-class FragmentShaderRGBATexOpaque : public FragmentTexOpaqueBinding {
+class FragmentShaderRGBATexClampOpaque : public FragmentTexClampOpaqueBinding {
 public:
     std::string getShaderString() const;
 };
 
 class FragmentShaderRGBATex : public FragmentTexOpaqueBinding {
 public:
     std::string getShaderString() const;
 };
 
 // Swizzles the red and blue component of sampled texel with alpha.
-class FragmentShaderRGBATexSwizzleAlpha : public FragmentTexAlphaBinding {
+class FragmentShaderRGBATexClampSwizzleAlpha : public FragmentTexClampAlphaBinding {
 public:
     std::string getShaderString() const;
 };
 
 // Swizzles the red and blue component of sampled texel without alpha.
-class FragmentShaderRGBATexSwizzleOpaque : public FragmentTexOpaqueBinding {
+class FragmentShaderRGBATexClampSwizzleOpaque : public FragmentTexClampOpaqueBinding {
 public:
     std::string getShaderString() const;
 };
 
 // Fragment shader for external textures.
 class FragmentShaderOESImageExternal : public FragmentTexAlphaBinding {
 public:
     std::string getShaderString() const;
     bool init(WebKit::WebGraphicsContext3D*, unsigned program, bool usingBindUniform, int* baseUniformIndex);
 private:
@@ skipping 135 matching lines @@
 private:
     int m_alphaLocation;
     int m_texTransformLocation;
     int m_frequencyLocation;
     int m_colorLocation;
 };
 
 } // namespace cc
 
 #endif  // CC_SHADER_H_