mesa: added glsl/convolutions test from gallium branch
diff --git a/progs/glsl/convolution.frag b/progs/glsl/convolution.frag
new file mode 100644
index 0000000..e49b8ac
--- /dev/null
+++ b/progs/glsl/convolution.frag
@@ -0,0 +1,21 @@
+
+const int KernelSize = 9;
+
+//texture offsets
+uniform vec2 Offset[KernelSize];
+//convolution kernel
+uniform vec4 KernelValue[KernelSize];
+uniform sampler2D srcTex;
+uniform vec4 ScaleFactor;
+uniform vec4 BaseColor;
+
+void main(void)
+{
+ int i;
+ vec4 sum = vec4(0.0);
+ for (i = 0; i < KernelSize; ++i) {
+ vec4 tmp = texture2D(srcTex, gl_TexCoord[0].st + Offset[i]);
+ sum += tmp * KernelValue[i];
+ }
+ gl_FragColor = sum * ScaleFactor + BaseColor;
+}