glslang SPV tests: Add a set of SPV tests.

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@31212 e7fa87d3-cd2b-0410-9028-fcbf551c1848

Test/spv.test.frag

@@ -0,0 +1,22 @@
+#version 110
+
+uniform sampler2D texSampler2D;
+uniform sampler3D texSampler3D;
+
+uniform float blend;
+uniform vec2 scale;
+uniform vec4 u;
+
+varying vec2 t;
+varying vec3 coords;
+
+void main()
+{  
+    float blendscale = 1.789;
+
+    vec4 v = texture2D(texSampler2D, (t + scale) / scale ).wzyx;
+
+	vec4 w = texture3D(texSampler3D, coords) + v;
+    
+    gl_FragColor = mix(w, u, blend * blendscale);
+}