shaders: add skia shaders

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

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

1 files changed, 61 insertions, 0 deletions

diff --git a/shaders/skia/583.shader_test b/shaders/skia/583.shader_test
new file mode 100644
index 0000000..d9469a1
--- /dev/null
+++ b/shaders/skia/583.shader_test
@@ -0,0 +1,61 @@
+[require]
+GLSL >= 1.40
+
+[fragment shader]
+#version 140
+
+out vec4 sk_FragColor;
+uniform vec4 uniformColor_Stage1_c0_c0;
+uniform vec4 ucolor_Stage1_c0_c0_c0_c0;
+noperspective in vec4 vcolor_Stage0;
+vec4 ConstColorProcessor_Stage1_c0_c0_c0_c0(vec4 _input) {
+    vec4 _output;
+    {
+        _output = _input.w * ucolor_Stage1_c0_c0_c0_c0;
+    }
+    return _output;
+}
+vec4 OverrideInputFragmentProcessor_Stage1_c0_c0(vec4 _input) {
+    vec4 _output;
+    vec4 constColor;
+    {
+        constColor = uniformColor_Stage1_c0_c0;
+    }
+    _output = ConstColorProcessor_Stage1_c0_c0_c0_c0(constColor);
+    return _output;
+}
+vec4 blend_multiply(vec4 src, vec4 dst) {
+    return vec4(((1.0 - src.w) * dst.xyz + (1.0 - dst.w) * src.xyz) + src.xyz * dst.xyz, src.w + (1.0 - src.w) * dst.w);
+}
+void main() {
+    vec4 outputColor_Stage0;
+    {
+        outputColor_Stage0 = vcolor_Stage0;
+    }
+    vec4 output_Stage1;
+    {
+        output_Stage1 = blend_multiply(OverrideInputFragmentProcessor_Stage1_c0_c0(vec4(1.0)), outputColor_Stage0);
+    }
+    {
+        sk_FragColor = output_Stage1;
+    }
+}
+
+[vertex shader]
+#version 140
+
+uniform vec4 sk_RTAdjust;
+uniform mat3 uViewM_Stage0;
+in vec2 position;
+in vec4 inColor;
+noperspective out vec4 vcolor_Stage0;
+void main() {
+    vec4 color = inColor;
+    color = color.zyxw;
+    color = vec4(color.xyz * color.w, color.w);
+    vcolor_Stage0 = color;
+    vec2 pos2 = (uViewM_Stage0 * vec3(position, 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);
+}
+