1 files changed, 135 insertions, 0 deletions
diff --git a/shaders/skia/2137.shader_test b/shaders/skia/2137.shader_test
new file mode 100644
index 0000000..8c915aa
--- /dev/null
+++ b/shaders/skia/2137.shader_test
@@ -0,0 +1,135 @@
+[require]
+GLSL >= 1.40
+
+[fragment shader]
+#version 140
+
+#extension GL_ARB_fragment_coord_conventions : require
+layout(origin_upper_left) in vec4 gl_FragCoord;
+out vec4 sk_FragColor;
+uniform vec2 ubaseFrequency_Stage1_c0_c0_c0_c0;
+uniform vec2 ustitchData_Stage1_c0_c0_c0_c0;
+uniform vec2 uDstTextureUpperLeft_Stage2;
+uniform vec2 uDstTextureCoordScale_Stage2;
+uniform sampler2D uTextureSampler_0_Stage1;
+uniform sampler2D uTextureSampler_1_Stage1;
+uniform sampler2D uDstTextureSampler_Stage2;
+noperspective in vec4 vcolor_Stage0;
+noperspective in vec3 vTransformedCoords_0_Stage0;
+noperspective in float vinCoverage_Stage0;
+float perlinnoise_Stage1_c0_c0_c0_c0(float chanCoord, vec2 noiseVec, vec2 stitchData) {
+    vec4 floorVal;
+    floorVal.xy = floor(noiseVec);
+    floorVal.zw = floorVal.xy + vec2(1.0);
+    vec2 fractVal = fract(noiseVec);
+    vec2 noiseSmooth = (fractVal * fractVal) * (vec2(3.0) - vec2(2.0) * fractVal);
+    if (floorVal.x >= stitchData.x) {
+        floorVal.x -= stitchData.x;
+    }
+    if (floorVal.y >= stitchData.y) {
+        floorVal.y -= stitchData.y;
+    }
+    if (floorVal.z >= stitchData.x) {
+        floorVal.z -= stitchData.x;
+    }
+    if (floorVal.w >= stitchData.y) {
+        floorVal.w -= stitchData.y;
+    }
+    floorVal = fract(floor(mod(floorVal, 256.0)) / vec4(256.0));
+    vec2 latticeIdx;
+    latticeIdx.x = texture(uTextureSampler_0_Stage1, vec2(floorVal.x, 0.5)).x;
+    latticeIdx.y = texture(uTextureSampler_0_Stage1, vec2(floorVal.z, 0.5)).x;
+    vec4 bcoords = fract(latticeIdx.xyxy + floorVal.yyww);
+    vec2 uv;
+    vec4 lattice = texture(uTextureSampler_1_Stage1, vec2(bcoords.x, chanCoord)).zyxw;
+    uv.x = dot((lattice.yw + lattice.xz * vec2(0.00390625)) * vec2(2.0) - vec2(1.0), fractVal);
+    fractVal.x -= 1.0;
+    lattice = texture(uTextureSampler_1_Stage1, vec2(bcoords.y, chanCoord)).zyxw;
+    uv.y = dot((lattice.yw + lattice.xz * vec2(0.00390625)) * vec2(2.0) - vec2(1.0), fractVal);
+    vec2 ab;
+    ab.x = mix(uv.x, uv.y, noiseSmooth.x);
+    fractVal.y -= 1.0;
+    lattice = texture(uTextureSampler_1_Stage1, vec2(bcoords.w, chanCoord)).zyxw;
+    uv.y = dot((lattice.yw + lattice.xz * vec2(0.00390625)) * vec2(2.0) - vec2(1.0), fractVal);
+    fractVal.x += 1.0;
+    lattice = texture(uTextureSampler_1_Stage1, vec2(bcoords.z, chanCoord)).zyxw;
+    uv.x = dot((lattice.yw + lattice.xz * vec2(0.00390625)) * vec2(2.0) - vec2(1.0), fractVal);
+    ab.y = mix(uv.x, uv.y, noiseSmooth.x);
+    return mix(ab.x, ab.y, noiseSmooth.y);
+}
+vec4 PerlinNoise_Stage1_c0_c0_c0_c0(vec4 _input) {
+    vec4 _output;
+    vec2 vTransformedCoords_0_Stage0_ensure2D = vTransformedCoords_0_Stage0.xy / vTransformedCoords_0_Stage0.z;
+    vec2 noiseVec = floor(vTransformedCoords_0_Stage0_ensure2D) * ubaseFrequency_Stage1_c0_c0_c0_c0;
+    _output = vec4(0.0);
+    vec2 stitchData = ustitchData_Stage1_c0_c0_c0_c0;
+    float ratio = 1.0;
+    for (int octave = 0;octave < 4; ++octave) {
+        _output += vec4(perlinnoise_Stage1_c0_c0_c0_c0(0.125, noiseVec, stitchData), perlinnoise_Stage1_c0_c0_c0_c0(0.375, noiseVec, stitchData), perlinnoise_Stage1_c0_c0_c0_c0(0.625, noiseVec, stitchData), perlinnoise_Stage1_c0_c0_c0_c0(0.875, noiseVec, stitchData)) * ratio;
+        noiseVec *= vec2(2.0);
+        ratio *= 0.5;
+        stitchData *= vec2(2.0);
+    }
+    _output = _output * vec4(0.5) + vec4(0.5);
+    _output = clamp(_output, 0.0, 1.0);
+    _output = vec4(_output.xyz * _output.www, _output.w);
+    return _output;
+}
+vec4 blend_src_in(vec4 src, vec4 dst) {
+    return src * dst.w;
+}
+vec4 blend_dst_in(vec4 src, vec4 dst) {
+    return blend_src_in(dst, src);
+}
+vec4 ComposeOne_Stage1_c0_c0(vec4 _input) {
+    vec4 _output;
+    _output = blend_dst_in(_input, PerlinNoise_Stage1_c0_c0_c0_c0(vec4(1.0)));
+    return _output;
+}
+vec4 blend_src(vec4 src, vec4 dst) {
+    return src;
+}
+void main() {
+    vec4 outputCoverage_Stage0;
+    {
+        float alpha = 1.0;
+        alpha = vinCoverage_Stage0;
+        outputCoverage_Stage0 = vec4(alpha);
+    }
+    vec4 output_Stage1;
+    {
+        output_Stage1 = ComposeOne_Stage1_c0_c0(vec4(1.0));
+    }
+    {
+        if (all(lessThanEqual(outputCoverage_Stage0.xyz, vec3(0.0)))) {
+            discard;
+        }
+        vec2 _dstTexCoord = (gl_FragCoord.xy - uDstTextureUpperLeft_Stage2) * uDstTextureCoordScale_Stage2;
+        _dstTexCoord.y = 1.0 - _dstTexCoord.y;
+        vec4 _dstColor = texture(uDstTextureSampler_Stage2, _dstTexCoord);
+        sk_FragColor = blend_src(output_Stage1, _dstColor);
+        sk_FragColor = outputCoverage_Stage0 * sk_FragColor + (vec4(1.0) - outputCoverage_Stage0) * _dstColor;
+    }
+}
+
+[vertex shader]
+#version 140
+
+uniform vec4 sk_RTAdjust;
+uniform mat3 uCoordTransformMatrix_0_Stage0;
+in vec2 inPosition;
+in vec4 inColor;
+in float inCoverage;
+noperspective out vec4 vcolor_Stage0;
+noperspective out vec3 vTransformedCoords_0_Stage0;
+noperspective out float vinCoverage_Stage0;
+void main() {
+    vec4 color = inColor;
+    vcolor_Stage0 = color;
+    vec2 pos2 = inPosition;
+    vTransformedCoords_0_Stage0 = uCoordTransformMatrix_0_Stage0 * vec3(inPosition, 1.0);
+    vinCoverage_Stage0 = inCoverage;
+    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);
+}
+