shaders: add skia shaders

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

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

1 files changed, 258 insertions, 0 deletions

diff --git a/shaders/skia/655-2.shader_test b/shaders/skia/655-2.shader_test
new file mode 100644
index 0000000..ad8218c
--- /dev/null
+++ b/shaders/skia/655-2.shader_test
@@ -0,0 +1,258 @@
+[require]
+GLSL >= 1.40
+
+[fragment shader]
+#version 140
+
+#extension GL_KHR_blend_equation_advanced : require
+out vec4 sk_FragColor;
+layout (blend_support_all_equations) out ;
+uniform vec4 ucircle_Stage1_c0_c0_c0_c0_c0_c0;
+uniform vec4 ucircle_Stage1_c0_c0_c0_c0_c1_c0;
+uniform vec2 uImageIncrement_Stage1_c0_c0_c1_c0_c0_c0;
+uniform vec2 uBounds_Stage1_c0_c0_c1_c0_c0_c0;
+uniform vec4 uKernel_Stage1_c0_c0_c1_c0_c0_c0[3];
+uniform vec4 ucircle_Stage1_c0_c0_c1_c0_c1_c0;
+uniform vec4 uinnerRect_Stage1_c1_c0;
+uniform vec2 uinvRadiiXY_Stage1_c1_c0;
+uniform sampler2D uTextureSampler_0_Stage1;
+noperspective in vec2 vEllipseOffsets0_Stage0;
+noperspective in vec2 vEllipseOffsets1_Stage0;
+noperspective in vec4 vinColor_Stage0;
+noperspective in vec2 vTransformedCoords_0_Stage0;
+vec4 CircleEffect_Stage1_c0_c0_c0_c0_c0_c0(vec4 _input) {
+    vec4 _output;
+    float d;
+    {
+        d = (length((ucircle_Stage1_c0_c0_c0_c0_c0_c0.xy - gl_FragCoord.xy) * ucircle_Stage1_c0_c0_c0_c0_c0_c0.w) - 1.0) * ucircle_Stage1_c0_c0_c0_c0_c0_c0.z;
+    }
+    {
+        _output = _input * clamp(d, 0.0, 1.0);
+    }
+    return _output;
+}
+vec4 CircleEffect_Stage1_c0_c0_c0_c0_c1_c0(vec4 _input) {
+    vec4 _output;
+    float d;
+    {
+        d = (1.0 - length((ucircle_Stage1_c0_c0_c0_c0_c1_c0.xy - gl_FragCoord.xy) * ucircle_Stage1_c0_c0_c0_c0_c1_c0.w)) * ucircle_Stage1_c0_c0_c0_c0_c1_c0.z;
+    }
+    {
+        _output = _input * clamp(d, 0.0, 1.0);
+    }
+    return _output;
+}
+vec4 blend_exclusion(vec4 src, vec4 dst) {
+    return vec4((dst.xyz + src.xyz) - (2.0 * dst.xyz) * src.xyz, src.w + (1.0 - src.w) * dst.w);
+}
+vec4 ComposeTwo_Stage1_c0_c0_c0_c0(vec4 _input) {
+    vec4 _output;
+    vec4 inputColor = vec4(_input.xyz, 1.0);
+    _output = blend_exclusion(CircleEffect_Stage1_c0_c0_c0_c0_c0_c0(inputColor), CircleEffect_Stage1_c0_c0_c0_c0_c1_c0(inputColor));
+    _output *= _input.w;
+    return _output;
+}
+vec4 GaussianConvolution_Stage1_c0_c0_c1_c0_c0_c0(vec4 _input) {
+    vec4 _output;
+    _output = vec4(0.0, 0.0, 0.0, 0.0);
+    vec2 coord = vTransformedCoords_0_Stage0 - 4.0 * uImageIncrement_Stage1_c0_c0_c1_c0_c0_c0;
+    vec2 coordSampled = vec2(0.0, 0.0);
+    coordSampled = coord;
+    if (coord.x >= uBounds_Stage1_c0_c0_c1_c0_c0_c0.x && coord.x <= uBounds_Stage1_c0_c0_c1_c0_c0_c0.y) {
+        _output += texture(uTextureSampler_0_Stage1, coordSampled) * uKernel_Stage1_c0_c0_c1_c0_c0_c0[0].x;
+    }
+    coord += uImageIncrement_Stage1_c0_c0_c1_c0_c0_c0;
+    coordSampled = coord;
+    if (coord.x >= uBounds_Stage1_c0_c0_c1_c0_c0_c0.x && coord.x <= uBounds_Stage1_c0_c0_c1_c0_c0_c0.y) {
+        _output += texture(uTextureSampler_0_Stage1, coordSampled) * uKernel_Stage1_c0_c0_c1_c0_c0_c0[0].y;
+    }
+    coord += uImageIncrement_Stage1_c0_c0_c1_c0_c0_c0;
+    coordSampled = coord;
+    if (coord.x >= uBounds_Stage1_c0_c0_c1_c0_c0_c0.x && coord.x <= uBounds_Stage1_c0_c0_c1_c0_c0_c0.y) {
+        _output += texture(uTextureSampler_0_Stage1, coordSampled) * uKernel_Stage1_c0_c0_c1_c0_c0_c0[0].z;
+    }
+    coord += uImageIncrement_Stage1_c0_c0_c1_c0_c0_c0;
+    coordSampled = coord;
+    if (coord.x >= uBounds_Stage1_c0_c0_c1_c0_c0_c0.x && coord.x <= uBounds_Stage1_c0_c0_c1_c0_c0_c0.y) {
+        _output += texture(uTextureSampler_0_Stage1, coordSampled) * uKernel_Stage1_c0_c0_c1_c0_c0_c0[0].w;
+    }
+    coord += uImageIncrement_Stage1_c0_c0_c1_c0_c0_c0;
+    coordSampled = coord;
+    if (coord.x >= uBounds_Stage1_c0_c0_c1_c0_c0_c0.x && coord.x <= uBounds_Stage1_c0_c0_c1_c0_c0_c0.y) {
+        _output += texture(uTextureSampler_0_Stage1, coordSampled) * uKernel_Stage1_c0_c0_c1_c0_c0_c0[1].x;
+    }
+    coord += uImageIncrement_Stage1_c0_c0_c1_c0_c0_c0;
+    coordSampled = coord;
+    if (coord.x >= uBounds_Stage1_c0_c0_c1_c0_c0_c0.x && coord.x <= uBounds_Stage1_c0_c0_c1_c0_c0_c0.y) {
+        _output += texture(uTextureSampler_0_Stage1, coordSampled) * uKernel_Stage1_c0_c0_c1_c0_c0_c0[1].y;
+    }
+    coord += uImageIncrement_Stage1_c0_c0_c1_c0_c0_c0;
+    coordSampled = coord;
+    if (coord.x >= uBounds_Stage1_c0_c0_c1_c0_c0_c0.x && coord.x <= uBounds_Stage1_c0_c0_c1_c0_c0_c0.y) {
+        _output += texture(uTextureSampler_0_Stage1, coordSampled) * uKernel_Stage1_c0_c0_c1_c0_c0_c0[1].z;
+    }
+    coord += uImageIncrement_Stage1_c0_c0_c1_c0_c0_c0;
+    coordSampled = coord;
+    if (coord.x >= uBounds_Stage1_c0_c0_c1_c0_c0_c0.x && coord.x <= uBounds_Stage1_c0_c0_c1_c0_c0_c0.y) {
+        _output += texture(uTextureSampler_0_Stage1, coordSampled) * uKernel_Stage1_c0_c0_c1_c0_c0_c0[1].w;
+    }
+    coord += uImageIncrement_Stage1_c0_c0_c1_c0_c0_c0;
+    coordSampled = coord;
+    if (coord.x >= uBounds_Stage1_c0_c0_c1_c0_c0_c0.x && coord.x <= uBounds_Stage1_c0_c0_c1_c0_c0_c0.y) {
+        _output += texture(uTextureSampler_0_Stage1, coordSampled) * uKernel_Stage1_c0_c0_c1_c0_c0_c0[2].x;
+    }
+    coord += uImageIncrement_Stage1_c0_c0_c1_c0_c0_c0;
+    _output *= _input;
+    return _output;
+}
+vec4 CircleEffect_Stage1_c0_c0_c1_c0_c1_c0(vec4 _input) {
+    vec4 _output;
+    float d;
+    {
+        d = (length((ucircle_Stage1_c0_c0_c1_c0_c1_c0.xy - gl_FragCoord.xy) * ucircle_Stage1_c0_c0_c1_c0_c1_c0.w) - 1.0) * ucircle_Stage1_c0_c0_c1_c0_c1_c0.z;
+    }
+    {
+        _output = _input * clamp(d, 0.0, 1.0);
+    }
+    return _output;
+}
+vec4 blend_xor(vec4 src, vec4 dst) {
+    return (1.0 - dst.w) * src + (1.0 - src.w) * dst;
+}
+vec4 ComposeTwo_Stage1_c0_c0_c1_c0(vec4 _input) {
+    vec4 _output;
+    vec4 inputColor = vec4(_input.xyz, 1.0);
+    _output = blend_xor(GaussianConvolution_Stage1_c0_c0_c1_c0_c0_c0(inputColor), CircleEffect_Stage1_c0_c0_c1_c0_c1_c0(inputColor));
+    _output *= _input.w;
+    return _output;
+}
+float _blend_color_saturation(vec3 color) {
+    return max(max(color.x, color.y), color.z) - min(min(color.x, color.y), color.z);
+}
+vec3 _blend_set_color_saturation_helper(vec3 minMidMax, float sat) {
+    if (minMidMax.x < minMidMax.z) {
+        return vec3(0.0, (sat * (minMidMax.y - minMidMax.x)) / (minMidMax.z - minMidMax.x), sat);
+    }
+    return vec3(0.0);
+}
+vec3 _blend_set_color_saturation(vec3 hueLumColor, vec3 satColor) {
+    float sat = _blend_color_saturation(satColor);
+    if (hueLumColor.x <= hueLumColor.y) {
+        if (hueLumColor.y <= hueLumColor.z) {
+            hueLumColor.xyz = _blend_set_color_saturation_helper(hueLumColor, sat);
+        } else if (hueLumColor.x <= hueLumColor.z) {
+            hueLumColor.xzy = _blend_set_color_saturation_helper(hueLumColor.xzy, sat);
+        } else {
+            hueLumColor.zxy = _blend_set_color_saturation_helper(hueLumColor.zxy, sat);
+        }
+    } else if (hueLumColor.x <= hueLumColor.z) {
+        hueLumColor.yxz = _blend_set_color_saturation_helper(hueLumColor.yxz, sat);
+    } else if (hueLumColor.y <= hueLumColor.z) {
+        hueLumColor.yzx = _blend_set_color_saturation_helper(hueLumColor.yzx, sat);
+    } else {
+        hueLumColor.zyx = _blend_set_color_saturation_helper(hueLumColor.zyx, sat);
+    }
+    return hueLumColor;
+}
+float _blend_color_luminance(vec3 color) {
+    return dot(vec3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), color);
+}
+vec3 _blend_set_color_luminance(vec3 hueSatColor, float alpha, vec3 lumColor) {
+    float lum = _blend_color_luminance(lumColor);
+    vec3 result = (lum - _blend_color_luminance(hueSatColor)) + hueSatColor;
+    float minComp = min(min(result.x, result.y), result.z);
+    float maxComp = max(max(result.x, result.y), result.z);
+    if (minComp < 0.0 && lum != minComp) {
+        result = lum + ((result - lum) * lum) / (lum - minComp);
+    }
+    if (maxComp > alpha && maxComp != lum) {
+        return lum + ((result - lum) * (alpha - lum)) / (maxComp - lum);
+    }
+    return result;
+}
+vec4 blend_hue(vec4 src, vec4 dst) {
+    float alpha = dst.w * src.w;
+    vec3 sda = src.xyz * dst.w;
+    vec3 dsa = dst.xyz * src.w;
+    return vec4((((_blend_set_color_luminance(_blend_set_color_saturation(sda, dsa), alpha, dsa) + dst.xyz) - dsa) + src.xyz) - sda, (src.w + dst.w) - alpha);
+}
+vec4 ComposeTwo_Stage1_c0_c0(vec4 _input) {
+    vec4 _output;
+    vec4 inputColor = vec4(_input.xyz, 1.0);
+    _output = blend_hue(ComposeTwo_Stage1_c0_c0_c0_c0(inputColor), ComposeTwo_Stage1_c0_c0_c1_c0(inputColor));
+    _output *= _input.w;
+    return _output;
+}
+vec4 EllipticalRRect_Stage1_c1_c0(vec4 _input) {
+    vec4 _output;
+    vec2 dxy0 = uinnerRect_Stage1_c1_c0.xy - gl_FragCoord.xy;
+    vec2 dxy1 = gl_FragCoord.xy - uinnerRect_Stage1_c1_c0.zw;
+    vec2 dxy = max(max(dxy0, dxy1), 0.0);
+    vec2 Z = dxy * uinvRadiiXY_Stage1_c1_c0;
+    float implicit = dot(Z, dxy) - 1.0;
+    float grad_dot = 4.0 * dot(Z, Z);
+    grad_dot = max(grad_dot, 9.9999997473787516e-05);
+    float approx_dist = implicit * inversesqrt(grad_dot);
+    float alpha = clamp(0.5 + approx_dist, 0.0, 1.0);
+    _output = _input * alpha;
+    return _output;
+}
+void main() {
+    vec4 outputColor_Stage0;
+    vec4 outputCoverage_Stage0;
+    {
+        outputColor_Stage0 = vinColor_Stage0;
+        vec2 scaledOffset = vEllipseOffsets0_Stage0;
+        float test = dot(scaledOffset, scaledOffset) - 1.0;
+        vec2 duvdx = dFdx(vEllipseOffsets0_Stage0);
+        vec2 duvdy = dFdy(vEllipseOffsets0_Stage0);
+        vec2 grad = vec2(vEllipseOffsets0_Stage0.x * duvdx.x + vEllipseOffsets0_Stage0.y * duvdx.y, vEllipseOffsets0_Stage0.x * duvdy.x + vEllipseOffsets0_Stage0.y * duvdy.y);
+        float grad_dot = 4.0 * dot(grad, grad);
+        grad_dot = max(grad_dot, 1.1754999560161448e-38);
+        float invlen = inversesqrt(grad_dot);
+        float edgeAlpha = clamp(0.5 - test * invlen, 0.0, 1.0);
+        scaledOffset = vEllipseOffsets1_Stage0;
+        test = dot(scaledOffset, scaledOffset) - 1.0;
+        duvdx = dFdx(vEllipseOffsets1_Stage0);
+        duvdy = dFdy(vEllipseOffsets1_Stage0);
+        grad = vec2(vEllipseOffsets1_Stage0.x * duvdx.x + vEllipseOffsets1_Stage0.y * duvdx.y, vEllipseOffsets1_Stage0.x * duvdy.x + vEllipseOffsets1_Stage0.y * duvdy.y);
+        grad_dot = 4.0 * dot(grad, grad);
+        invlen = inversesqrt(grad_dot);
+        edgeAlpha *= clamp(0.5 + test * invlen, 0.0, 1.0);
+        outputCoverage_Stage0 = vec4(edgeAlpha);
+    }
+    vec4 output_Stage1;
+    {
+        vec4 inputColor = vec4(outputColor_Stage0.xyz, 1.0);
+        output_Stage1 = blend_exclusion(ComposeTwo_Stage1_c0_c0(inputColor), EllipticalRRect_Stage1_c1_c0(inputColor));
+        output_Stage1 *= outputColor_Stage0.w;
+    }
+    {
+        sk_FragColor = outputCoverage_Stage0 * output_Stage1;
+    }
+}
+
+[vertex shader]
+#version 140
+
+uniform vec4 sk_RTAdjust;
+uniform mat3 uViewM_Stage0;
+uniform mat3 uCoordTransformMatrix_0_Stage0;
+in vec2 inPosition;
+in vec4 inColor;
+in vec2 inEllipseOffsets0;
+in vec2 inEllipseOffsets1;
+noperspective out vec2 vEllipseOffsets0_Stage0;
+noperspective out vec2 vEllipseOffsets1_Stage0;
+noperspective out vec4 vinColor_Stage0;
+noperspective out vec2 vTransformedCoords_0_Stage0;
+void main() {
+    vEllipseOffsets0_Stage0 = inEllipseOffsets0;
+    vEllipseOffsets1_Stage0 = inEllipseOffsets1;
+    vinColor_Stage0 = inColor;
+    vec2 pos2 = (uViewM_Stage0 * vec3(inPosition, 1.0)).xy;
+    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);
+}
+