diff options
| -rw-r--r-- | Source/WebCore/platform/graphics/android/ShaderProgram.cpp | 32 | ||||
| -rw-r--r-- | Source/WebCore/platform/graphics/android/ShaderProgram.h | 18 |
2 files changed, 38 insertions, 12 deletions
diff --git a/Source/WebCore/platform/graphics/android/ShaderProgram.cpp b/Source/WebCore/platform/graphics/android/ShaderProgram.cpp index ed1ce11..c4abeab 100644 --- a/Source/WebCore/platform/graphics/android/ShaderProgram.cpp +++ b/Source/WebCore/platform/graphics/android/ShaderProgram.cpp @@ -128,14 +128,16 @@ static const char gSurfaceTextureOESFragmentShaderInverted[] = "precision mediump float;\n" "varying vec2 v_texCoord; \n" "uniform float alpha; \n" + "uniform float contrast; \n" "uniform samplerExternalOES s_texture; \n" "void main() {\n" - " gl_FragColor = texture2D(s_texture, v_texCoord); \n" - " float color = 1.0 - (gl_FragColor.r + gl_FragColor.g + gl_FragColor.b) / 3.0; \n" - " gl_FragColor.r = color; \n" - " gl_FragColor.g = color; \n" - " gl_FragColor.b = color; \n" - " gl_FragColor *= alpha; " + " vec4 pixel = texture2D(s_texture, v_texCoord); \n" + " float a = pixel.a; \n" + " float color = a - (0.2989 * pixel.r + 0.5866 * pixel.g + 0.1145 * pixel.b);\n" + " color = ((color - a/2.0) * contrast) + a/2.0; \n" + " pixel.rgb = vec3(color, color, color); \n " + " gl_FragColor = pixel; \n" + " gl_FragColor *= alpha; \n" "}\n"; GLuint ShaderProgram::loadShader(GLenum shaderType, const char* pSource) @@ -207,6 +209,7 @@ GLuint ShaderProgram::createProgram(const char* pVertexSource, const char* pFrag ShaderProgram::ShaderProgram() : m_blendingEnabled(false) + , m_contrast(1) { init(); } @@ -264,6 +267,7 @@ void ShaderProgram::init() m_hSTOESProjectionMatrixInverted = glGetUniformLocation(m_surfTexOESProgramInverted, "projectionMatrix"); m_hSTOESAlphaInverted = glGetUniformLocation(m_surfTexOESProgramInverted, "alpha"); + m_hSTOESContrastInverted = glGetUniformLocation(m_surfTexOESProgramInverted, "contrast"); m_hSTOESTexSamplerInverted = glGetUniformLocation(m_surfTexOESProgramInverted, "s_texture"); m_hSTOESPositionInverted = glGetAttribLocation(m_surfTexOESProgramInverted, "vPosition"); @@ -338,7 +342,8 @@ void ShaderProgram::drawQuadInternal(SkRect& geometry, GLint texSampler, GLenum textureTarget, GLint position, - GLint alpha) + GLint alpha, + GLint contrast) { glUseProgram(program); setProjectionMatrix(geometry, projectionMatrixHandle); @@ -355,6 +360,8 @@ void ShaderProgram::drawQuadInternal(SkRect& geometry, glEnableVertexAttribArray(position); glVertexAttribPointer(position, 2, GL_FLOAT, GL_FALSE, 0, 0); glUniform1f(alpha, opacity); + if (contrast != -1) + glUniform1f(contrast, m_contrast); setBlendingState(opacity < 1.0); glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); @@ -379,7 +386,8 @@ void ShaderProgram::drawQuad(SkRect& geometry, int textureId, float opacity, drawQuadInternal(geometry, textureId, opacity, m_surfTexOESProgramInverted, m_hSTOESProjectionMatrixInverted, m_hSTOESTexSamplerInverted, GL_TEXTURE_EXTERNAL_OES, - m_hSTOESPositionInverted, m_hSTOESAlphaInverted); + m_hSTOESPositionInverted, m_hSTOESAlphaInverted, + m_hSTOESContrastInverted); } else if (!textureTarget && !TilesManager::instance()->invertedScreen()) { drawQuadInternal(geometry, textureId, opacity, m_surfTex2DProgram, @@ -523,7 +531,8 @@ void ShaderProgram::drawLayerQuadInternal(const GLfloat* projectionMatrix, int textureId, float opacity, GLenum textureTarget, GLint program, GLint matrix, GLint texSample, - GLint position, GLint alpha) + GLint position, GLint alpha, + GLint contrast) { glUseProgram(program); glUniformMatrix4fv(matrix, 1, GL_FALSE, projectionMatrix); @@ -541,6 +550,8 @@ void ShaderProgram::drawLayerQuadInternal(const GLfloat* projectionMatrix, glEnableVertexAttribArray(position); glVertexAttribPointer(position, 2, GL_FLOAT, GL_FALSE, 0, 0); glUniform1f(alpha, opacity); + if (contrast != -1) + glUniform1f(contrast, m_contrast); } @@ -573,7 +584,8 @@ void ShaderProgram::drawLayerQuad(const TransformationMatrix& drawMatrix, drawLayerQuadInternal(projectionMatrix, textureId, opacity, GL_TEXTURE_EXTERNAL_OES, m_surfTexOESProgramInverted, m_hSTOESProjectionMatrixInverted, m_hSTOESTexSamplerInverted, - m_hSTOESPositionInverted, m_hSTOESAlphaInverted); + m_hSTOESPositionInverted, m_hSTOESAlphaInverted, + m_hSTOESContrastInverted); } else if (!textureTarget && !TilesManager::instance()->invertedScreen()) { drawLayerQuadInternal(projectionMatrix, textureId, opacity, diff --git a/Source/WebCore/platform/graphics/android/ShaderProgram.h b/Source/WebCore/platform/graphics/android/ShaderProgram.h index 244f2be..5c1f324 100644 --- a/Source/WebCore/platform/graphics/android/ShaderProgram.h +++ b/Source/WebCore/platform/graphics/android/ShaderProgram.h @@ -25,6 +25,8 @@ #include "TransformationMatrix.h" #include <GLES2/gl2.h> +#define MAX_CONTRAST 5 + namespace WebCore { class ShaderProgram { @@ -77,6 +79,15 @@ public: IntRect clippedRectWithViewport(const IntRect& rect, int margin = 0); void resetBlending(); + float contrast() { return m_contrast; } + void setContrast(float c) { + float contrast = c; + if (contrast < 0) + contrast = 0; + if (contrast > MAX_CONTRAST) + contrast = MAX_CONTRAST; + m_contrast = contrast; + } private: GLuint loadShader(GLenum shaderType, const char* pSource); @@ -88,12 +99,12 @@ private: void drawQuadInternal(SkRect& geometry, GLint textureId, float opacity, GLint program, GLint projectionMatrixHandle, GLint texSampler, GLenum textureTarget, - GLint position, GLint alpha); + GLint position, GLint alpha, GLint contrast = -1); void drawLayerQuadInternal(const GLfloat* projectionMatrix, int textureId, float opacity, GLenum textureTarget, GLint program, GLint matrix, GLint texSample, - GLint position, GLint alpha); + GLint position, GLint alpha, GLint contrast = -1); bool m_blendingEnabled; @@ -141,9 +152,12 @@ private: GLint m_hSTOESProjectionMatrixInverted; GLint m_hSTOESAlphaInverted; + GLint m_hSTOESContrastInverted; GLint m_hSTOESTexSamplerInverted; GLint m_hSTOESPositionInverted; + float m_contrast; + // attribs GLint m_hPosition; GLint m_hVideoPosition; |