Revert "cc: Clamp texture coordinates in all tile shaders"

cc/shader.cc

Index: cc/shader.cc
diff --git a/cc/shader.cc b/cc/shader.cc
index 89474299e4fb1a569870a5014feef9f7056f36a3..c52423103e8b2a96b6cfdec9abc48787406d546e 100644
--- a/cc/shader.cc
+++ b/cc/shader.cc
@@ -345,31 +345,6 @@ void FragmentTexAlphaBinding::init(WebGraphicsContext3D* context, unsigned progr
     DCHECK(m_samplerLocation != -1 && m_alphaLocation != -1);
 }
 
-FragmentTexClampAlphaBinding::FragmentTexClampAlphaBinding()
-    : m_samplerLocation(-1)
-    , m_alphaLocation(-1)
-    , m_fragmentTexTransformLocation(-1)
-{
-}
-
-void FragmentTexClampAlphaBinding::init(WebGraphicsContext3D* context, unsigned program, bool usingBindUniform, int* baseUniformIndex)
-{
-    static const char* shaderUniforms[] = {
-        "s_texture",
-        "alpha",
-        "fragmentTexTransform",
-    };
-    int locations[3];
-
-    getProgramUniformLocations(context, program, shaderUniforms, arraysize(shaderUniforms), arraysize(locations), locations, usingBindUniform, baseUniformIndex);
-
-    m_samplerLocation = locations[0];
-    m_alphaLocation = locations[1];
-    m_fragmentTexTransformLocation = locations[2];
-    DCHECK(m_samplerLocation != -1 && m_alphaLocation != -1);
-}
-
-
 FragmentTexOpaqueBinding::FragmentTexOpaqueBinding()
     : m_samplerLocation(-1)
 {
@@ -388,27 +363,6 @@ void FragmentTexOpaqueBinding::init(WebGraphicsContext3D* context, unsigned prog
     DCHECK(m_samplerLocation != -1);
 }
 
-FragmentTexClampOpaqueBinding::FragmentTexClampOpaqueBinding()
-    : m_samplerLocation(-1)
-    , m_fragmentTexTransformLocation(-1)
-{
-}
-
-void FragmentTexClampOpaqueBinding::init(WebGraphicsContext3D* context, unsigned program, bool usingBindUniform, int* baseUniformIndex)
-{
-    static const char* shaderUniforms[] = {
-        "s_texture",
-        "fragmentTexTransform",
-    };
-    int locations[2];
-
-    getProgramUniformLocations(context, program, shaderUniforms, arraysize(shaderUniforms), arraysize(locations), locations, usingBindUniform, baseUniformIndex);
-
-    m_samplerLocation = locations[0];
-    m_fragmentTexTransformLocation = locations[1];
-    DCHECK(m_samplerLocation != -1);
-}
-
 std::string FragmentShaderRGBATexFlipVaryingAlpha::getShaderString() const
 {
     return SHADER(
@@ -466,24 +420,6 @@ std::string FragmentShaderRGBATexAlpha::getShaderString() const
     );
 }
 
-std::string FragmentShaderRGBATexClampAlpha::getShaderString() const
-{
-    return SHADER(
-        precision mediump float;
-        varying vec2 v_texCoord;
-        uniform sampler2D s_texture;
-        uniform float alpha;
-        uniform vec4 fragmentTexTransform;
-        void main()
-        {
-            vec2 texCoord = clamp(v_texCoord, 0.0, 1.0) * fragmentTexTransform.zw + fragmentTexTransform.xy;
-            vec4 texColor = texture2D(s_texture, texCoord);
-            gl_FragColor = texColor * alpha;
-        }
-    );
-}
-
-
 std::string FragmentShaderRGBATexVaryingAlpha::getShaderString() const
 {
     return SHADER(
@@ -530,17 +466,15 @@ std::string FragmentShaderRGBATexRectVaryingAlpha::getShaderString() const
             "}\n";
 }
 
-std::string FragmentShaderRGBATexClampOpaque::getShaderString() const
+std::string FragmentShaderRGBATexOpaque::getShaderString() const
 {
     return SHADER(
         precision mediump float;
         varying vec2 v_texCoord;
         uniform sampler2D s_texture;
-        uniform vec4 fragmentTexTransform;
         void main()
         {
-            vec2 texCoord = clamp(v_texCoord, 0.0, 1.0) * fragmentTexTransform.zw + fragmentTexTransform.xy;
-            vec4 texColor = texture2D(s_texture, texCoord);
+            vec4 texColor = texture2D(s_texture, v_texCoord);
             gl_FragColor = vec4(texColor.rgb, 1.0);
         }
     );
@@ -559,34 +493,30 @@ std::string FragmentShaderRGBATex::getShaderString() const
     );
 }
 
-std::string FragmentShaderRGBATexClampSwizzleAlpha::getShaderString() const
+std::string FragmentShaderRGBATexSwizzleAlpha::getShaderString() const
 {
     return SHADER(
         precision mediump float;
         varying vec2 v_texCoord;
         uniform sampler2D s_texture;
         uniform float alpha;
-        uniform vec4 fragmentTexTransform;
         void main()
         {
-            vec2 texCoord = clamp(v_texCoord, 0.0, 1.0) * fragmentTexTransform.zw + fragmentTexTransform.xy;
-            vec4 texColor = texture2D(s_texture, texCoord);
+            vec4 texColor = texture2D(s_texture, v_texCoord);
             gl_FragColor = vec4(texColor.z, texColor.y, texColor.x, texColor.w) * alpha;
         }
     );
 }
 
-std::string FragmentShaderRGBATexClampSwizzleOpaque::getShaderString() const
+std::string FragmentShaderRGBATexSwizzleOpaque::getShaderString() const
 {
     return SHADER(
         precision mediump float;
         varying vec2 v_texCoord;
         uniform sampler2D s_texture;
-        uniform vec4 fragmentTexTransform;
         void main()
         {
-            vec2 texCoord = clamp(v_texCoord, 0.0, 1.0) * fragmentTexTransform.zw + fragmentTexTransform.xy;
-            vec4 texColor = texture2D(s_texture, texCoord);
+            vec4 texColor = texture2D(s_texture, v_texCoord);
             gl_FragColor = vec4(texColor.z, texColor.y, texColor.x, 1.0);
         }
     );