shaders: add skia shaders

Add shaders extracted from skia's unit tests[1]

[1] https://skia.org/dev/testing/testing

1 files changed, 322 insertions, 0 deletions

diff --git a/shaders/skia/1237.shader_test b/shaders/skia/1237.shader_test
new file mode 100644
index 0000000..80e3a20
--- /dev/null
+++ b/shaders/skia/1237.shader_test
@@ -0,0 +1,322 @@
+[require]
+GLSL >= 1.40
+
+[fragment shader]
+#version 140
+
+out vec4 sk_FragColor;
+uniform vec2 uImageIncrement_Stage1_c0_c0;
+uniform vec4 uKernel_Stage1_c0_c0[4];
+uniform vec2 uKernelOffset_Stage1_c0_c0;
+uniform float uGain_Stage1_c0_c0;
+uniform float uBias_Stage1_c0_c0;
+uniform vec4 uTexDom_Stage1_c0_c0;
+uniform sampler2D uTextureSampler_0_Stage1;
+uniform sampler2D uTextureSampler_1_Stage1;
+noperspective in vec4 vQuadEdge_Stage0;
+noperspective in vec4 vinColor_Stage0;
+noperspective in vec2 vTransformedCoords_0_Stage0;
+vec4 MatrixConvolution_Stage1_c0_c0(vec4 _input) {
+    vec4 _output;
+    vec4 sum = vec4(0.0, 0.0, 0.0, 0.0);
+    vec2 coord = vTransformedCoords_0_Stage0 - uKernelOffset_Stage1_c0_c0 * uImageIncrement_Stage1_c0_c0;
+    vec4 c;
+    {
+        float k = uKernel_Stage1_c0_c0[0].x;
+        {
+            vec2 origCoord = coord;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[0].y;
+        {
+            vec2 origCoord = coord + vec2(1.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[0].z;
+        {
+            vec2 origCoord = coord + vec2(2.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[0].w;
+        {
+            vec2 origCoord = coord + vec2(3.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[1].x;
+        {
+            vec2 origCoord = coord + vec2(4.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[1].y;
+        {
+            vec2 origCoord = coord + vec2(5.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[1].z;
+        {
+            vec2 origCoord = coord + vec2(6.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[1].w;
+        {
+            vec2 origCoord = coord + vec2(7.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[2].x;
+        {
+            vec2 origCoord = coord + vec2(8.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[2].y;
+        {
+            vec2 origCoord = coord + vec2(9.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[2].z;
+        {
+            vec2 origCoord = coord + vec2(10.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[2].w;
+        {
+            vec2 origCoord = coord + vec2(11.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[3].x;
+        {
+            vec2 origCoord = coord + vec2(12.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[3].y;
+        {
+            vec2 origCoord = coord + vec2(13.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[3].z;
+        {
+            vec2 origCoord = coord + vec2(14.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        float k = uKernel_Stage1_c0_c0[3].w;
+        {
+            vec2 origCoord = coord + vec2(15.0, 0.0) * uImageIncrement_Stage1_c0_c0;
+            vec2 clampedCoord;
+            clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+            vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+            c = textureColor;
+        }
+        c.xyz /= c.w;
+        c.xyz = clamp(c.xyz, 0.0, 1.0);
+        sum += c * k;
+    }
+    {
+        vec2 origCoord = vTransformedCoords_0_Stage0;
+        vec2 clampedCoord;
+        clampedCoord = clamp(origCoord, uTexDom_Stage1_c0_c0.xy, uTexDom_Stage1_c0_c0.zw);
+        vec4 textureColor = texture(uTextureSampler_0_Stage1, clampedCoord);
+        c = textureColor;
+    }
+    _output.w = c.w;
+    _output.xyz = clamp(sum.xyz * uGain_Stage1_c0_c0 + uBias_Stage1_c0_c0, 0.0, 1.0);
+    _output.xyz *= _output.w;
+    _output *= _input;
+    return _output;
+}
+vec4 ColorTableEffect_Stage1_c1_c0(vec4 _input) {
+    vec4 _output;
+    float nonZeroAlpha = max(_input.w, 9.9999997473787516e-05);
+    vec4 coord = vec4(_input.xyz / nonZeroAlpha, nonZeroAlpha);
+    coord = coord * 0.9960939884185791 + vec4(0.0019529999699443579, 0.0019529999699443579, 0.0019529999699443579, 0.0019529999699443579);
+    _output.w = texture(uTextureSampler_1_Stage1, vec2(coord.w, 0.125)).w;
+    _output.x = texture(uTextureSampler_1_Stage1, vec2(coord.x, 0.375)).w;
+    _output.y = texture(uTextureSampler_1_Stage1, vec2(coord.y, 0.625)).w;
+    _output.z = texture(uTextureSampler_1_Stage1, vec2(coord.z, 0.875)).w;
+    _output.xyz *= _output.w;
+    return _output;
+}
+float _guarded_divide(float n, float d) {
+    return n / d;
+}
+float _color_dodge_component(float sc, float sa, float dc, float da) {
+    if (dc == 0.0) {
+        return sc * (1.0 - da);
+    } else {
+        float d = sa - sc;
+        if (d == 0.0) {
+            return (sa * da + sc * (1.0 - da)) + dc * (1.0 - sa);
+        }
+        d = min(da, _guarded_divide(dc * sa, d));
+        return (d * sa + sc * (1.0 - da)) + dc * (1.0 - sa);
+    }
+}
+vec4 blend_color_dodge(vec4 src, vec4 dst) {
+    return vec4(_color_dodge_component(src.x, src.w, dst.x, dst.w), _color_dodge_component(src.y, src.w, dst.y, dst.w), _color_dodge_component(src.z, src.w, dst.z, dst.w), src.w + (1.0 - src.w) * dst.w);
+}
+void main() {
+    vec4 outputColor_Stage0;
+    vec4 outputCoverage_Stage0;
+    {
+        outputColor_Stage0 = vinColor_Stage0;
+        float edgeAlpha;
+        vec2 duvdx = dFdx(vQuadEdge_Stage0.xy);
+        vec2 duvdy = dFdy(vQuadEdge_Stage0.xy);
+        if (vQuadEdge_Stage0.z > 0.0 && vQuadEdge_Stage0.w > 0.0) {
+            edgeAlpha = min(min(vQuadEdge_Stage0.z, vQuadEdge_Stage0.w) + 0.5, 1.0);
+        } else {
+            vec2 gF = vec2((2.0 * vQuadEdge_Stage0.x) * duvdx.x - duvdx.y, (2.0 * vQuadEdge_Stage0.x) * duvdy.x - duvdy.y);
+            edgeAlpha = vQuadEdge_Stage0.x * vQuadEdge_Stage0.x - vQuadEdge_Stage0.y;
+            edgeAlpha = clamp(0.5 - edgeAlpha / length(gF), 0.0, 1.0);
+        }
+        outputCoverage_Stage0 = vec4(edgeAlpha);
+    }
+    vec4 output_Stage1;
+    {
+        vec4 inputColor = vec4(outputColor_Stage0.xyz, 1.0);
+        output_Stage1 = blend_color_dodge(MatrixConvolution_Stage1_c0_c0(inputColor), ColorTableEffect_Stage1_c1_c0(inputColor));
+        output_Stage1 *= outputColor_Stage0.w;
+    }
+    {
+        sk_FragColor = output_Stage1 * outputCoverage_Stage0;
+    }
+}
+
+[vertex shader]
+#version 140
+
+uniform vec4 sk_RTAdjust;
+uniform mat3 uCoordTransformMatrix_0_Stage0;
+in vec2 inPosition;
+in vec4 inColor;
+in vec4 inQuadEdge;
+noperspective out vec4 vQuadEdge_Stage0;
+noperspective out vec4 vinColor_Stage0;
+noperspective out vec2 vTransformedCoords_0_Stage0;
+void main() {
+    vQuadEdge_Stage0 = inQuadEdge;
+    vinColor_Stage0 = inColor;
+    vec2 pos2 = inPosition;
+    vTransformedCoords_0_Stage0 = (uCoordTransformMatrix_0_Stage0 * vec3(inPosition, 1.0)).xy;
+    gl_Position = vec4(pos2.x, pos2.y, 0.0, 1.0);
+    gl_Position = vec4(gl_Position.xy * sk_RTAdjust.xz + gl_Position.ww * sk_RTAdjust.yw, 0.0, gl_Position.w);
+}
+