| /* |
| Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies) |
| Copyright (C) 2012 Igalia S.L. |
| Copyright (C) 2011 Google Inc. All rights reserved. |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public License |
| along with this library; see the file COPYING.LIB. If not, write to |
| the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "TextureMapperShaderProgram.h" |
| |
| #if USE(TEXTURE_MAPPER_GL) |
| |
| #include "GLContext.h" |
| #include "Logging.h" |
| #include "TextureMapperGL.h" |
| #include <wtf/text/StringBuilder.h> |
| |
| namespace WebCore { |
| |
| static inline bool compositingLogEnabled() |
| { |
| #if !LOG_DISABLED |
| return LogCompositing.state == WTFLogChannelState::On; |
| #else |
| return false; |
| #endif |
| } |
| |
| #define STRINGIFY(...) #__VA_ARGS__ |
| |
| #define GLSL_DIRECTIVE(...) "#"#__VA_ARGS__"\n" |
| |
| #define TEXTURE_SPACE_MATRIX_PRECISION_DIRECTIVE \ |
| GLSL_DIRECTIVE(ifdef GL_FRAGMENT_PRECISION_HIGH) \ |
| GLSL_DIRECTIVE(define TextureSpaceMatrixPrecision highp) \ |
| GLSL_DIRECTIVE(else) \ |
| GLSL_DIRECTIVE(define TextureSpaceMatrixPrecision mediump) \ |
| GLSL_DIRECTIVE(endif) |
| |
| |
| // Input/output variables definition for both GLES and OpenGL < 3.2. |
| // The default precision directive is only needed for GLES. |
| static const char* vertexTemplateLT320Vars = |
| #if USE(OPENGL_ES) |
| TEXTURE_SPACE_MATRIX_PRECISION_DIRECTIVE |
| #endif |
| #if USE(OPENGL_ES) |
| STRINGIFY( |
| precision TextureSpaceMatrixPrecision float; |
| ) |
| #endif |
| STRINGIFY( |
| attribute vec4 a_vertex; |
| varying vec2 v_texCoord; |
| varying vec2 v_transformedTexCoord; |
| varying float v_antialias; |
| varying vec4 v_nonProjectedPosition; |
| ); |
| |
| #if !USE(OPENGL_ES) |
| // Input/output variables definition for OpenGL >= 3.2. |
| static const char* vertexTemplateGE320Vars = |
| STRINGIFY( |
| in vec4 a_vertex; |
| out vec2 v_texCoord; |
| out vec2 v_transformedTexCoord; |
| out float v_antialias; |
| out vec4 v_nonProjectedPosition; |
| ); |
| #endif |
| |
| static const char* vertexTemplateCommon = |
| STRINGIFY( |
| uniform mat4 u_modelViewMatrix; |
| uniform mat4 u_projectionMatrix; |
| uniform mat4 u_textureSpaceMatrix; |
| |
| void noop(inout vec2 dummyParameter) { } |
| |
| vec4 toViewportSpace(vec2 pos) { return vec4(pos, 0., 1.) * u_modelViewMatrix; } |
| |
| // This function relies on the assumption that we get edge triangles with control points, |
| // a control point being the nearest point to the coordinate that is on the edge. |
| void applyAntialiasing(inout vec2 position) |
| { |
| // We count on the fact that quad passed in is always a unit rect, |
| // and the transformation matrix applies the real rect. |
| const vec2 center = vec2(0.5, 0.5); |
| const float antialiasInflationDistance = 1.; |
| |
| // We pass the control point as the zw coordinates of the vertex. |
| // The control point is the point on the edge closest to the current position. |
| // The control point is used to compute the antialias value. |
| vec2 controlPoint = a_vertex.zw; |
| |
| // First we calculate the distance in viewport space. |
| vec4 centerInViewportCoordinates = toViewportSpace(center); |
| vec4 controlPointInViewportCoordinates = toViewportSpace(controlPoint); |
| float viewportSpaceDistance = distance(centerInViewportCoordinates, controlPointInViewportCoordinates); |
| |
| // We add the inflation distance to the computed distance, and compute the ratio. |
| float inflationRatio = (viewportSpaceDistance + antialiasInflationDistance) / viewportSpaceDistance; |
| |
| // v_antialias needs to be 0 for the outer edge and 1. for the inner edge. |
| // Since the controlPoint is equal to the position in the edge vertices, the value is always 0 for those. |
| // For the center point, the distance is always 0.5, so we normalize to 1. by multiplying by 2. |
| // By multplying by inflationRatio and dividing by (inflationRatio - 1), |
| // We make sure that the varying interpolates between 0 (outer edge), 1 (inner edge) and n > 1 (center). |
| v_antialias = distance(controlPoint, position) * 2. * inflationRatio / (inflationRatio - 1.); |
| |
| // Now inflate the actual position. By using this formula instead of inflating position directly, |
| // we ensure that the center vertex is never inflated. |
| position = center + (position - center) * inflationRatio; |
| } |
| |
| void main(void) |
| { |
| vec2 position = a_vertex.xy; |
| applyAntialiasingIfNeeded(position); |
| |
| v_texCoord = position; |
| vec4 clampedPosition = clamp(vec4(position, 0., 1.), 0., 1.); |
| v_transformedTexCoord = (u_textureSpaceMatrix * clampedPosition).xy; |
| v_nonProjectedPosition = u_modelViewMatrix * vec4(position, 0., 1.); |
| gl_Position = u_projectionMatrix * v_nonProjectedPosition; |
| } |
| ); |
| |
| #define ANTIALIASING_TEX_COORD_DIRECTIVE \ |
| GLSL_DIRECTIVE(if defined(ENABLE_Antialiasing) && defined(ENABLE_Texture)) \ |
| GLSL_DIRECTIVE(define transformTexCoord fragmentTransformTexCoord) \ |
| GLSL_DIRECTIVE(else) \ |
| GLSL_DIRECTIVE(define transformTexCoord vertexTransformTexCoord) \ |
| GLSL_DIRECTIVE(endif) |
| |
| #define ENABLE_APPLIER(Name) "#define ENABLE_"#Name"\n#define apply"#Name"IfNeeded apply"#Name"\n" |
| #define DISABLE_APPLIER(Name) "#define apply"#Name"IfNeeded noop\n" |
| #define BLUR_CONSTANTS \ |
| GLSL_DIRECTIVE(define GAUSSIAN_KERNEL_HALF_WIDTH 11) \ |
| GLSL_DIRECTIVE(define GAUSSIAN_KERNEL_STEP 0.2) |
| |
| |
| #define OES_EGL_IMAGE_EXTERNAL_DIRECTIVE \ |
| GLSL_DIRECTIVE(ifdef ENABLE_TextureExternalOES) \ |
| GLSL_DIRECTIVE(extension GL_OES_EGL_image_external : require) \ |
| GLSL_DIRECTIVE(define SamplerExternalOESType samplerExternalOES) \ |
| GLSL_DIRECTIVE(else) \ |
| GLSL_DIRECTIVE(define SamplerExternalOESType sampler2D) \ |
| GLSL_DIRECTIVE(endif) |
| |
| // The max number of stacked rounded rectangle clips allowed is 10, which is also the |
| // max number of transforms that we can get. We need 3 components for each rounded |
| // rectangle so we need 30 components to receive the 10 rectangles. |
| // |
| // Keep this is sync with the values defined in ClipStack.h |
| #define ROUNDED_RECT_CONSTANTS \ |
| GLSL_DIRECTIVE(define ROUNDED_RECT_MAX_RECTS 10) \ |
| GLSL_DIRECTIVE(define ROUNDED_RECT_ARRAY_SIZE 30) \ |
| GLSL_DIRECTIVE(define ROUNDED_RECT_INVERSE_TRANSFORM_ARRAY_SIZE 10) |
| |
| // Common header for all versions. We define the matrices variables here to keep the precision |
| // directives scope: the first one applies to the matrices variables and the next one to the |
| // rest of them. The precision is only used in GLES. |
| static const char* fragmentTemplateHeaderCommon = |
| ANTIALIASING_TEX_COORD_DIRECTIVE |
| BLUR_CONSTANTS |
| ROUNDED_RECT_CONSTANTS |
| OES_EGL_IMAGE_EXTERNAL_DIRECTIVE |
| #if USE(OPENGL_ES) |
| TEXTURE_SPACE_MATRIX_PRECISION_DIRECTIVE |
| STRINGIFY( |
| precision TextureSpaceMatrixPrecision float; |
| ) |
| #endif |
| STRINGIFY( |
| uniform mat4 u_textureSpaceMatrix; |
| uniform mat4 u_textureColorSpaceMatrix; |
| ) |
| #if USE(OPENGL_ES) |
| STRINGIFY( |
| precision mediump float; |
| ) |
| #endif |
| ; |
| |
| // Input/output variables definition for both GLES and OpenGL < 3.2. |
| static const char* fragmentTemplateLT320Vars = |
| STRINGIFY( |
| varying float v_antialias; |
| varying vec2 v_texCoord; |
| varying vec2 v_transformedTexCoord; |
| varying vec4 v_nonProjectedPosition; |
| ); |
| |
| #if !USE(OPENGL_ES) |
| // Input/output variables definition for OpenGL >= 3.2. |
| static const char* fragmentTemplateGE320Vars = |
| STRINGIFY( |
| in float v_antialias; |
| in vec2 v_texCoord; |
| in vec2 v_transformedTexCoord; |
| in vec4 v_nonProjectedPosition; |
| ); |
| #endif |
| |
| static const char* fragmentTemplateCommon = |
| STRINGIFY( |
| uniform sampler2D s_sampler; |
| uniform sampler2D s_samplerY; |
| uniform sampler2D s_samplerU; |
| uniform sampler2D s_samplerV; |
| uniform sampler2D s_samplerA; |
| uniform sampler2D s_contentTexture; |
| uniform SamplerExternalOESType s_externalOESTexture; |
| uniform float u_opacity; |
| uniform float u_filterAmount; |
| uniform mat4 u_yuvToRgb; |
| uniform vec2 u_blurRadius; |
| uniform vec2 u_shadowOffset; |
| uniform vec4 u_color; |
| uniform float u_gaussianKernel[GAUSSIAN_KERNEL_HALF_WIDTH]; |
| uniform int u_roundedRectNumber; |
| uniform vec4 u_roundedRect[ROUNDED_RECT_ARRAY_SIZE]; |
| uniform mat4 u_roundedRectInverseTransformMatrix[ROUNDED_RECT_INVERSE_TRANSFORM_ARRAY_SIZE]; |
| |
| void noop(inout vec4 dummyParameter) { } |
| void noop(inout vec4 dummyParameter, vec2 texCoord) { } |
| void noop(inout vec2 dummyParameter) { } |
| |
| float antialias() { return smoothstep(0., 1., v_antialias); } |
| |
| vec2 fragmentTransformTexCoord() |
| { |
| vec4 clampedPosition = clamp(vec4(v_texCoord, 0., 1.), 0., 1.); |
| return (u_textureSpaceMatrix * clampedPosition).xy; |
| } |
| |
| vec2 vertexTransformTexCoord() { return v_transformedTexCoord; } |
| |
| void applyManualRepeat(inout vec2 pos) { pos = fract(pos); } |
| |
| void applyTextureRGB(inout vec4 color, vec2 texCoord) { color = u_textureColorSpaceMatrix * texture2D(s_sampler, texCoord); } |
| |
| void applyPremultiply(inout vec4 color) { color = vec4(color.rgb * color.a, color.a); } |
| |
| vec3 yuvToRgb(float y, float u, float v) |
| { |
| vec4 rgb = vec4(y, u, v, 1.0) * u_yuvToRgb; |
| return rgb.xyz; |
| } |
| void applyTextureYUV(inout vec4 color, vec2 texCoord) |
| { |
| float y = texture2D(s_samplerY, texCoord).r; |
| float u = texture2D(s_samplerU, texCoord).r; |
| float v = texture2D(s_samplerV, texCoord).r; |
| vec4 data = vec4(yuvToRgb(y, u, v), 1.0); |
| color = u_textureColorSpaceMatrix * data; |
| } |
| void applyTextureYUVA(inout vec4 color, vec2 texCoord) |
| { |
| float y = texture2D(s_samplerY, texCoord).r; |
| float u = texture2D(s_samplerU, texCoord).r; |
| float v = texture2D(s_samplerV, texCoord).r; |
| float a = texture2D(s_samplerA, texCoord).r; |
| vec4 data = vec4(yuvToRgb(y, u, v), a); |
| color = u_textureColorSpaceMatrix * data; |
| } |
| void applyTextureNV12(inout vec4 color, vec2 texCoord) |
| { |
| float y = texture2D(s_samplerY, texCoord).r; |
| vec2 uv = texture2D(s_samplerU, texCoord).rg; |
| vec4 data = vec4(yuvToRgb(y, uv.x, uv.y), 1.0); |
| color = u_textureColorSpaceMatrix * data; |
| } |
| void applyTextureNV21(inout vec4 color, vec2 texCoord) |
| { |
| float y = texture2D(s_samplerY, texCoord).r; |
| vec2 uv = texture2D(s_samplerU, texCoord).gr; |
| vec4 data = vec4(yuvToRgb(y, uv.x, uv.y), 1.0); |
| color = u_textureColorSpaceMatrix * data; |
| } |
| void applyTexturePackedYUV(inout vec4 color, vec2 texCoord) |
| { |
| vec4 data = texture2D(s_sampler, texCoord); |
| color = u_textureColorSpaceMatrix * vec4(yuvToRgb(data.b, data.g, data.r), data.a); |
| } |
| void applyOpacity(inout vec4 color) { color *= u_opacity; } |
| void applyAntialiasing(inout vec4 color) { color *= antialias(); } |
| |
| void applyGrayscaleFilter(inout vec4 color) |
| { |
| float amount = 1.0 - u_filterAmount; |
| color = vec4((0.2126 + 0.7874 * amount) * color.r + (0.7152 - 0.7152 * amount) * color.g + (0.0722 - 0.0722 * amount) * color.b, |
| (0.2126 - 0.2126 * amount) * color.r + (0.7152 + 0.2848 * amount) * color.g + (0.0722 - 0.0722 * amount) * color.b, |
| (0.2126 - 0.2126 * amount) * color.r + (0.7152 - 0.7152 * amount) * color.g + (0.0722 + 0.9278 * amount) * color.b, |
| color.a); |
| } |
| |
| void applySepiaFilter(inout vec4 color) |
| { |
| float amount = 1.0 - u_filterAmount; |
| color = vec4((0.393 + 0.607 * amount) * color.r + (0.769 - 0.769 * amount) * color.g + (0.189 - 0.189 * amount) * color.b, |
| (0.349 - 0.349 * amount) * color.r + (0.686 + 0.314 * amount) * color.g + (0.168 - 0.168 * amount) * color.b, |
| (0.272 - 0.272 * amount) * color.r + (0.534 - 0.534 * amount) * color.g + (0.131 + 0.869 * amount) * color.b, |
| color.a); |
| } |
| |
| void applySaturateFilter(inout vec4 color) |
| { |
| color = vec4((0.213 + 0.787 * u_filterAmount) * color.r + (0.715 - 0.715 * u_filterAmount) * color.g + (0.072 - 0.072 * u_filterAmount) * color.b, |
| (0.213 - 0.213 * u_filterAmount) * color.r + (0.715 + 0.285 * u_filterAmount) * color.g + (0.072 - 0.072 * u_filterAmount) * color.b, |
| (0.213 - 0.213 * u_filterAmount) * color.r + (0.715 - 0.715 * u_filterAmount) * color.g + (0.072 + 0.928 * u_filterAmount) * color.b, |
| color.a); |
| } |
| |
| void applyHueRotateFilter(inout vec4 color) |
| { |
| float pi = 3.14159265358979323846; |
| float c = cos(u_filterAmount * pi / 180.0); |
| float s = sin(u_filterAmount * pi / 180.0); |
| color = vec4(color.r * (0.213 + c * 0.787 - s * 0.213) + color.g * (0.715 - c * 0.715 - s * 0.715) + color.b * (0.072 - c * 0.072 + s * 0.928), |
| color.r * (0.213 - c * 0.213 + s * 0.143) + color.g * (0.715 + c * 0.285 + s * 0.140) + color.b * (0.072 - c * 0.072 - s * 0.283), |
| color.r * (0.213 - c * 0.213 - s * 0.787) + color.g * (0.715 - c * 0.715 + s * 0.715) + color.b * (0.072 + c * 0.928 + s * 0.072), |
| color.a); |
| } |
| |
| float invert(float n, float a) { return (a - n) * u_filterAmount + n * (1.0 - u_filterAmount); } |
| void applyInvertFilter(inout vec4 color) |
| { |
| color = vec4(invert(color.r, color.a), invert(color.g, color.a), invert(color.b, color.a), color.a); |
| } |
| |
| void applyBrightnessFilter(inout vec4 color) |
| { |
| color = vec4(color.rgb * u_filterAmount, color.a); |
| } |
| |
| float contrast(float n) { return (n - 0.5) * u_filterAmount + 0.5; } |
| void applyContrastFilter(inout vec4 color) |
| { |
| color = vec4(contrast(color.r), contrast(color.g), contrast(color.b), color.a); |
| } |
| |
| void applyOpacityFilter(inout vec4 color) |
| { |
| color *= u_filterAmount; |
| } |
| |
| vec4 sampleColorAtRadius(float radius, vec2 texCoord) |
| { |
| vec2 coord = texCoord + radius * u_blurRadius; |
| return texture2D(s_sampler, coord); |
| } |
| |
| float sampleAlphaAtRadius(float radius, vec2 texCoord) |
| { |
| vec2 coord = texCoord - u_shadowOffset + radius * u_blurRadius; |
| return texture2D(s_sampler, coord).a * float(coord.x > 0. && coord.y > 0. && coord.x < 1. && coord.y < 1.); |
| } |
| |
| void applyBlurFilter(inout vec4 color, vec2 texCoord) |
| { |
| vec4 total = sampleColorAtRadius(0., texCoord) * u_gaussianKernel[0]; |
| for (int i = 1; i < GAUSSIAN_KERNEL_HALF_WIDTH; i++) { |
| total += sampleColorAtRadius(float(i) * GAUSSIAN_KERNEL_STEP, texCoord) * u_gaussianKernel[i]; |
| total += sampleColorAtRadius(float(-1 * i) * GAUSSIAN_KERNEL_STEP, texCoord) * u_gaussianKernel[i]; |
| } |
| |
| color = total; |
| } |
| |
| void applyAlphaBlur(inout vec4 color, vec2 texCoord) |
| { |
| float total = sampleAlphaAtRadius(0., texCoord) * u_gaussianKernel[0]; |
| for (int i = 1; i < GAUSSIAN_KERNEL_HALF_WIDTH; i++) { |
| total += sampleAlphaAtRadius(float(i) * GAUSSIAN_KERNEL_STEP, texCoord) * u_gaussianKernel[i]; |
| total += sampleAlphaAtRadius(float(-1 * i) * GAUSSIAN_KERNEL_STEP, texCoord) * u_gaussianKernel[i]; |
| } |
| |
| color *= total; |
| } |
| |
| vec4 sourceOver(vec4 src, vec4 dst) { return src + dst * (1. - src.a); } |
| |
| void applyContentTexture(inout vec4 color, vec2 texCoord) |
| { |
| vec4 contentColor = texture2D(s_contentTexture, texCoord); |
| color = sourceOver(contentColor, color); |
| } |
| |
| void applyTextureExternalOES(inout vec4 color, vec2 texCoord) |
| { |
| vec4 contentColor = texture2D(s_externalOESTexture, texCoord); |
| color = sourceOver(contentColor, color); |
| } |
| |
| void applySolidColor(inout vec4 color) { color *= u_color; } |
| |
| float ellipsisDist(vec2 p, vec2 radius) |
| { |
| if (radius == vec2(0, 0)) |
| return 0.0; |
| |
| vec2 p0 = p / radius; |
| vec2 p1 = 2.0 * p0 / radius; |
| |
| return (dot(p0, p0) - 1.0) / length (p1); |
| } |
| |
| float ellipsisCoverage(vec2 point, vec2 center, vec2 radius) |
| { |
| float d = ellipsisDist(point - center, radius); |
| return clamp(0.5 - d, 0.0, 1.0); |
| } |
| |
| float roundedRectCoverage(vec2 p, vec4 bounds, vec2 topLeftRadii, vec2 topRightRadii, vec2 bottomLeftRadii, vec2 bottomRightRadii) |
| { |
| if (p.x < bounds.x || p.y < bounds.y || p.x >= bounds.z || p.y >= bounds.w) |
| return 0.0; |
| |
| vec2 topLeftCenter = bounds.xy + topLeftRadii; |
| vec2 topRightCenter = bounds.zy + (topRightRadii * vec2(-1, 1)); |
| vec2 bottomLeftCenter = bounds.xw + (bottomLeftRadii * vec2(1, -1)); |
| vec2 bottomRightCenter = bounds.zw + (bottomRightRadii * vec2(-1, -1)); |
| |
| if (p.x < topLeftCenter.x && p.y < topLeftCenter.y) |
| return ellipsisCoverage(p, topLeftCenter, topLeftRadii); |
| |
| if (p.x > topRightCenter.x && p.y < topRightCenter.y) |
| return ellipsisCoverage(p, topRightCenter, topRightRadii); |
| |
| if (p.x < bottomLeftCenter.x && p.y > bottomLeftCenter.y) |
| return ellipsisCoverage(p, bottomLeftCenter, bottomLeftRadii); |
| |
| if (p.x > bottomRightCenter.x && p.y > bottomRightCenter.y) |
| return ellipsisCoverage(p, bottomRightCenter, bottomRightRadii); |
| |
| return 1.0; |
| } |
| |
| void applyRoundedRectClip(inout vec4 color) |
| { |
| // This works by checking whether the fragment position, once the transform is applied, |
| // is inside the defined rounded rectangle or not. |
| // |
| // We can't use gl_fragCoord for the fragment position because thats the projected point |
| // and the projection screws the Z component. We need the real 3D position that comes from |
| // the nonProjectedPosition variable. |
| // |
| // This implementation is not optimal, but it's done this way in order to overcome rpi3's |
| // proprietary video driver limitations (see https://bugs.webkit.org/show_bug.cgi?id=219739). |
| |
| for (int rectIndex = 0; rectIndex < ROUNDED_RECT_MAX_RECTS; rectIndex++) { |
| if (rectIndex >= u_roundedRectNumber) |
| break; |
| |
| vec4 fragCoord = u_roundedRectInverseTransformMatrix[rectIndex] * v_nonProjectedPosition; |
| vec4 bounds = vec4(u_roundedRect[rectIndex * 3].xy, u_roundedRect[rectIndex * 3].xy + u_roundedRect[rectIndex * 3].zw); |
| vec2 topLeftRadii = u_roundedRect[(rectIndex * 3) + 1].xy; |
| vec2 topRightRadii = u_roundedRect[(rectIndex * 3) + 1].zw; |
| vec2 bottomLeftRadii = u_roundedRect[(rectIndex * 3) + 2].xy; |
| vec2 bottomRightRadii = u_roundedRect[(rectIndex * 3) + 2].zw; |
| color *= roundedRectCoverage(fragCoord.xy, bounds, topLeftRadii, topRightRadii, bottomLeftRadii, bottomRightRadii); |
| } |
| } |
| |
| void main(void) |
| { |
| vec4 color = vec4(1., 1., 1., 1.); |
| vec2 texCoord = transformTexCoord(); |
| applyManualRepeatIfNeeded(texCoord); |
| applyTextureRGBIfNeeded(color, texCoord); |
| applyTextureYUVIfNeeded(color, texCoord); |
| applyTextureYUVAIfNeeded(color, texCoord); |
| applyTextureNV12IfNeeded(color, texCoord); |
| applyTextureNV21IfNeeded(color, texCoord); |
| applyTexturePackedYUVIfNeeded(color, texCoord); |
| applyPremultiplyIfNeeded(color); |
| applySolidColorIfNeeded(color); |
| applyAlphaBlurIfNeeded(color, texCoord); |
| applyContentTextureIfNeeded(color, texCoord); |
| applyAntialiasingIfNeeded(color); |
| applyOpacityIfNeeded(color); |
| applyGrayscaleFilterIfNeeded(color); |
| applySepiaFilterIfNeeded(color); |
| applySaturateFilterIfNeeded(color); |
| applyHueRotateFilterIfNeeded(color); |
| applyInvertFilterIfNeeded(color); |
| applyBrightnessFilterIfNeeded(color); |
| applyContrastFilterIfNeeded(color); |
| applyOpacityFilterIfNeeded(color); |
| applyBlurFilterIfNeeded(color, texCoord); |
| applyTextureExternalOESIfNeeded(color, texCoord); |
| applyRoundedRectClipIfNeeded(color); |
| gl_FragColor = color; |
| } |
| ); |
| |
| Ref<TextureMapperShaderProgram> TextureMapperShaderProgram::create(TextureMapperShaderProgram::Options options) |
| { |
| #define SET_APPLIER_FROM_OPTIONS(Applier) \ |
| optionsApplierBuilder.append(\ |
| (options & TextureMapperShaderProgram::Applier) ? ENABLE_APPLIER(Applier) : DISABLE_APPLIER(Applier)) |
| |
| StringBuilder optionsApplierBuilder; |
| SET_APPLIER_FROM_OPTIONS(TextureRGB); |
| SET_APPLIER_FROM_OPTIONS(TextureYUV); |
| SET_APPLIER_FROM_OPTIONS(TextureYUVA); |
| SET_APPLIER_FROM_OPTIONS(TextureNV12); |
| SET_APPLIER_FROM_OPTIONS(TextureNV21); |
| SET_APPLIER_FROM_OPTIONS(TexturePackedYUV); |
| SET_APPLIER_FROM_OPTIONS(SolidColor); |
| SET_APPLIER_FROM_OPTIONS(Opacity); |
| SET_APPLIER_FROM_OPTIONS(Antialiasing); |
| SET_APPLIER_FROM_OPTIONS(GrayscaleFilter); |
| SET_APPLIER_FROM_OPTIONS(SepiaFilter); |
| SET_APPLIER_FROM_OPTIONS(SaturateFilter); |
| SET_APPLIER_FROM_OPTIONS(HueRotateFilter); |
| SET_APPLIER_FROM_OPTIONS(BrightnessFilter); |
| SET_APPLIER_FROM_OPTIONS(ContrastFilter); |
| SET_APPLIER_FROM_OPTIONS(InvertFilter); |
| SET_APPLIER_FROM_OPTIONS(OpacityFilter); |
| SET_APPLIER_FROM_OPTIONS(BlurFilter); |
| SET_APPLIER_FROM_OPTIONS(AlphaBlur); |
| SET_APPLIER_FROM_OPTIONS(ContentTexture); |
| SET_APPLIER_FROM_OPTIONS(ManualRepeat); |
| SET_APPLIER_FROM_OPTIONS(TextureExternalOES); |
| SET_APPLIER_FROM_OPTIONS(RoundedRectClip); |
| SET_APPLIER_FROM_OPTIONS(Premultiply); |
| |
| StringBuilder vertexShaderBuilder; |
| |
| // OpenGL >= 3.2 requires a #version directive at the beginning of the code. |
| #if !USE(OPENGL_ES) |
| unsigned glVersion = GLContext::current()->version(); |
| if (glVersion >= 320) |
| vertexShaderBuilder.append(GLSL_DIRECTIVE(version 150)); |
| #endif |
| |
| // Append the options. |
| vertexShaderBuilder.append(optionsApplierBuilder.toString()); |
| |
| // Append the appropriate input/output variable definitions. |
| #if USE(OPENGL_ES) |
| vertexShaderBuilder.append(vertexTemplateLT320Vars); |
| #else |
| if (glVersion >= 320) |
| vertexShaderBuilder.append(vertexTemplateGE320Vars); |
| else |
| vertexShaderBuilder.append(vertexTemplateLT320Vars); |
| #endif |
| |
| // Append the common code. |
| vertexShaderBuilder.append(vertexTemplateCommon); |
| |
| StringBuilder fragmentShaderBuilder; |
| |
| // OpenGL >= 3.2 requires a #version directive at the beginning of the code. |
| #if !USE(OPENGL_ES) |
| if (glVersion >= 320) |
| fragmentShaderBuilder.append(GLSL_DIRECTIVE(version 150)); |
| #endif |
| |
| // Append the options. |
| fragmentShaderBuilder.append(optionsApplierBuilder.toString()); |
| |
| // Append the common header. |
| fragmentShaderBuilder.append(fragmentTemplateHeaderCommon); |
| |
| // Append the appropriate input/output variable definitions. |
| #if USE(OPENGL_ES) |
| fragmentShaderBuilder.append(fragmentTemplateLT320Vars); |
| #else |
| if (glVersion >= 320) |
| fragmentShaderBuilder.append(fragmentTemplateGE320Vars); |
| else |
| fragmentShaderBuilder.append(fragmentTemplateLT320Vars); |
| #endif |
| |
| // Append the common code. |
| fragmentShaderBuilder.append(fragmentTemplateCommon); |
| |
| return adoptRef(*new TextureMapperShaderProgram(vertexShaderBuilder.toString(), fragmentShaderBuilder.toString())); |
| } |
| |
| #if !LOG_DISABLED |
| static CString getShaderLog(GLuint shader) |
| { |
| GLint logLength = 0; |
| glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &logLength); |
| if (!logLength) |
| return { }; |
| |
| Vector<GLchar> info(logLength); |
| GLsizei infoLength = 0; |
| glGetShaderInfoLog(shader, logLength, &infoLength, info.data()); |
| |
| size_t stringLength = std::max(infoLength, 0); |
| return { info.data(), stringLength }; |
| } |
| |
| static CString getProgramLog(GLuint program) |
| { |
| GLint logLength = 0; |
| glGetProgramiv(program, GL_INFO_LOG_LENGTH, &logLength); |
| if (!logLength) |
| return { }; |
| |
| Vector<GLchar> info(logLength); |
| GLsizei infoLength = 0; |
| glGetProgramInfoLog(program, logLength, &infoLength, info.data()); |
| |
| size_t stringLength = std::max(infoLength, 0); |
| return { info.data(), stringLength }; |
| } |
| #endif |
| |
| TextureMapperShaderProgram::TextureMapperShaderProgram(const String& vertex, const String& fragment) |
| { |
| m_vertexShader = glCreateShader(GL_VERTEX_SHADER); |
| { |
| CString vertexCString = vertex.utf8(); |
| const char* data = vertexCString.data(); |
| int length = vertexCString.length(); |
| glShaderSource(m_vertexShader, 1, &data, &length); |
| } |
| glCompileShader(m_vertexShader); |
| |
| m_fragmentShader = glCreateShader(GL_FRAGMENT_SHADER); |
| { |
| CString fragmentCString = fragment.utf8(); |
| const char* data = fragmentCString.data(); |
| int length = fragmentCString.length(); |
| glShaderSource(m_fragmentShader, 1, &data, &length); |
| } |
| glCompileShader(m_fragmentShader); |
| |
| m_id = glCreateProgram(); |
| glAttachShader(m_id, m_vertexShader); |
| glAttachShader(m_id, m_fragmentShader); |
| glLinkProgram(m_id); |
| |
| if (!compositingLogEnabled() || glGetError() == GL_NO_ERROR) |
| return; |
| |
| LOG(Compositing, "Vertex shader log: %s\n", getShaderLog(m_vertexShader).data()); |
| LOG(Compositing, "Fragment shader log: %s\n", getShaderLog(m_fragmentShader).data()); |
| LOG(Compositing, "Program log: %s\n", getProgramLog(m_id).data()); |
| } |
| |
| TextureMapperShaderProgram::~TextureMapperShaderProgram() |
| { |
| if (!m_id) |
| return; |
| |
| glDetachShader(m_id, m_vertexShader); |
| glDeleteShader(m_vertexShader); |
| glDetachShader(m_id, m_fragmentShader); |
| glDeleteShader(m_fragmentShader); |
| glDeleteProgram(m_id); |
| } |
| |
| void TextureMapperShaderProgram::setMatrix(GLuint location, const TransformationMatrix& matrix) |
| { |
| auto floatMatrix = matrix.toColumnMajorFloatArray(); |
| glUniformMatrix4fv(location, 1, false, floatMatrix.data()); |
| } |
| |
| GLuint TextureMapperShaderProgram::getLocation(VariableID variable, ASCIILiteral name, VariableType type) |
| { |
| auto addResult = m_variables.ensure(variable, |
| [this, &name, type] { |
| switch (type) { |
| case UniformVariable: |
| return glGetUniformLocation(m_id, name); |
| case AttribVariable: |
| return glGetAttribLocation(m_id, name); |
| } |
| ASSERT_NOT_REACHED(); |
| return 0; |
| }); |
| return addResult.iterator->value; |
| } |
| |
| } // namespace WebCore |
| |
| #endif // USE(TEXTURE_MAPPER_GL) |
