Leo Ma
9 years ago
parent
7e3b61bd30
commit
1706a896e7
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varying highp vec2 textureCoordinate;
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uniform sampler2D inputImageTexture;
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uniform lowp float brightness;
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void main() {
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lowp vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);
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gl_FragColor = vec4((textureColor.rgb + vec3(brightness)), textureColor.w);
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}
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varying highp vec2 textureCoordinate;
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uniform sampler2D inputImageTexture;
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uniform lowp float contrast;
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void main() {
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lowp vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);
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gl_FragColor = vec4(((textureColor.rgb - vec3(0.5)) * contrast + vec3(0.5)), textureColor.w);
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}
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varying highp vec2 textureCoordinate;
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uniform sampler2D inputImageTexture;
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uniform highp float exposure;
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void main() {
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highp vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);
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gl_FragColor = vec4(textureColor.rgb * pow(2.0, exposure), textureColor.w);
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}
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@ -1,10 +1,8 @@
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#extension GL_OES_EGL_image_external : require
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precision mediump float;
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varying mediump vec2 textureCoordinate;
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uniform samplerExternalOES inputImageTexture;
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uniform sampler2D inputImageTexture;
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void main() {
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vec3 centralColor = texture2D(inputImageTexture, textureCoordinate).rgb;
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#extension GL_OES_EGL_image_external : require
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precision mediump float;
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varying mediump vec2 textureCoordinate;
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uniform samplerExternalOES inputImageTexture;
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void main() {
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gl_FragColor = texture2D(inputImageTexture, textureCoordinate);
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}
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precision highp float;
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varying highp vec2 textureCoordinate;
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uniform sampler2D inputImageTexture;
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uniform mediump float hueAdjust;
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const highp vec4 kRGBToYPrime = vec4 (0.299, 0.587, 0.114, 0.0);
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const highp vec4 kRGBToI = vec4 (0.595716, -0.274453, -0.321263, 0.0);
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const highp vec4 kRGBToQ = vec4 (0.211456, -0.522591, 0.31135, 0.0);
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const highp vec4 kYIQToR = vec4 (1.0, 0.9563, 0.6210, 0.0);
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const highp vec4 kYIQToG = vec4 (1.0, -0.2721, -0.6474, 0.0);
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const highp vec4 kYIQToB = vec4 (1.0, -1.1070, 1.7046, 0.0);
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void main () {
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// Sample the input pixel
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highp vec4 color = texture2D(inputImageTexture, textureCoordinate);
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// Convert to YIQ
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highp float YPrime = dot (color, kRGBToYPrime);
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highp float I = dot (color, kRGBToI);
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highp float Q = dot (color, kRGBToQ);
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// Calculate the hue and chroma
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highp float hue = atan (Q, I);
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highp float chroma = sqrt (I * I + Q * Q);
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// Make the user's adjustments
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hue += (-hueAdjust); //why negative rotation?
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// Convert back to YIQ
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Q = chroma * sin (hue);
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I = chroma * cos (hue);
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// Convert back to RGB
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highp vec4 yIQ = vec4 (YPrime, I, Q, 0.0);
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color.r = dot (yIQ, kYIQToR);
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color.g = dot (yIQ, kYIQToG);
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color.b = dot (yIQ, kYIQToB);
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// Save the result
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gl_FragColor = color;
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}
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varying highp vec2 textureCoordinate;
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uniform sampler2D inputImageTexture;
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uniform sampler2D inputImageTexture2; // lookup texture\n" +
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void main() {
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lowp vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);\n" +
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mediump float blueColor = textureColor.b * 63.0;
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mediump vec2 quad1;
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quad1.y = floor(floor(blueColor) / 8.0);
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quad1.x = floor(blueColor) - (quad1.y * 8.0);
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mediump vec2 quad2;\n" +
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quad2.y = floor(ceil(blueColor) / 8.0);\n" +
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quad2.x = ceil(blueColor) - (quad2.y * 8.0);\n" +
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highp vec2 texPos1;
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texPos1.x = (quad1.x * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.r);
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texPos1.y = (quad1.y * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.g);
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highp vec2 texPos2;\n" +
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texPos2.x = (quad2.x * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.r);
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texPos2.y = (quad2.y * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.g);
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lowp vec4 newColor1 = texture2D(inputImageTexture2, texPos1);
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lowp vec4 newColor2 = texture2D(inputImageTexture2, texPos2);
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lowp vec4 newColor = mix(newColor1, newColor2, fract(blueColor));
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gl_FragColor = vec4(newColor.rgb, textureColor.w);
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}
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varying highp vec2 textureCoordinate;
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uniform sampler2D inputImageTexture;
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uniform lowp float saturation;
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// Values from \"Graphics Shaders: Theory and Practice\" by Bailey and Cunningham
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const mediump vec3 luminanceWeighting = vec3(0.2125, 0.7154, 0.0721);
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void main() {
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lowp vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);
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lowp float luminance = dot(textureColor.rgb, luminanceWeighting);
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lowp vec3 greyScaleColor = vec3(luminance);
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gl_FragColor = vec4(mix(greyScaleColor, textureColor.rgb, saturation), textureColor.w);
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}
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precision highp float;
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varying highp vec2 textureCoordinate;
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varying highp vec2 leftTextureCoordinate;
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varying highp vec2 rightTextureCoordinate;
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varying highp vec2 topTextureCoordinate;
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varying highp vec2 bottomTextureCoordinate;
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varying highp float centerMultiplier;
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varying highp float edgeMultiplier;
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uniform sampler2D inputImageTexture;
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void main() {
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mediump vec3 textureColor = texture2D(inputImageTexture, textureCoordinate).rgb;
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mediump vec3 leftTextureColor = texture2D(inputImageTexture, leftTextureCoordinate).rgb;
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mediump vec3 rightTextureColor = texture2D(inputImageTexture, rightTextureCoordinate).rgb;
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mediump vec3 topTextureColor = texture2D(inputImageTexture, topTextureCoordinate).rgb;
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mediump vec3 bottomTextureColor = texture2D(inputImageTexture, bottomTextureCoordinate).rgb;
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gl_FragColor = vec4((textureColor * centerMultiplier - (leftTextureColor * edgeMultiplier + rightTextureColor * edgeMultiplier + topTextureColor * edgeMultiplier + bottomTextureColor * edgeMultiplier)), texture2D(inputImageTexture, bottomTextureCoordinate).w);
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}
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attribute vec4 position;
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attribute vec4 inputTextureCoordinate;
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varying vec2 textureCoordinate;
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void main() {
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textureCoordinate = inputTextureCoordinate.xy;
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gl_Position = position;
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}
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attribute vec4 position;
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attribute vec4 inputTextureCoordinate;
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uniform float imageWidthFactor;
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uniform float imageHeightFactor;
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uniform float sharpness;
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varying vec2 textureCoordinate;
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varying vec2 leftTextureCoordinate;
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varying vec2 rightTextureCoordinate;
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varying vec2 topTextureCoordinate;
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varying vec2 bottomTextureCoordinate;
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varying float centerMultiplier;
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varying float edgeMultiplier;
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void main() {
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gl_Position = position;
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mediump vec2 widthStep = vec2(imageWidthFactor, 0.0);
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mediump vec2 heightStep = vec2(0.0, imageHeightFactor);
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textureCoordinate = inputTextureCoordinate.xy;
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leftTextureCoordinate = inputTextureCoordinate.xy - widthStep;
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rightTextureCoordinate = inputTextureCoordinate.xy + widthStep;
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topTextureCoordinate = inputTextureCoordinate.xy + heightStep;
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bottomTextureCoordinate = inputTextureCoordinate.xy - heightStep;
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centerMultiplier = 1.0 + 4.0 * sharpness;
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edgeMultiplier = sharpness;
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}
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