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.400.frag

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+#version 400 core
+
+in vec2 c2D;
+flat in int i;
+out vec4 outp;
+out ivec4 ioutp;
+out uvec4 uoutp;
+uniform sampler2D arrayedSampler[5];
+uniform usampler2DRect samp2dr;
+uniform isampler2DArray isamp2DA;
+uniform sampler2DRectShadow u2drs;
+
+#extension GL_ARB_separate_shader_objects : enable
+
+layout(location = 6) in vec4 vl2;
+
+void foo23()
+{
+    const ivec2[3] offsets = ivec2[3](ivec2(1,2), ivec2(3,4), ivec2(15,16));
+
+    outp.x += textureProjGradOffset(u2drs, outp, vec2(0.0), vec2(0.0), offsets[1]);
+}
+
+void main()
+{
+    vec4 v;
+    v = texture(arrayedSampler[i], c2D);
+    outp.x = gl_ClipDistance[1];
+    outp.yzw = v.yzw;
+
+    ivec2 offsets[4];
+    const ivec2 constOffsets[4] = ivec2[4](ivec2(1,2), ivec2(3,4), ivec2(15,16), ivec2(-2,0));
+    uoutp = textureGatherOffsets(samp2dr, c2D, constOffsets, 2);
+    outp += textureGather(arrayedSampler[0], c2D);
+    ioutp = textureGatherOffset(isamp2DA, vec3(0.1), ivec2(1), 3);
+    ioutp += textureGatherOffset(isamp2DA, vec3(0.1), ivec2(1), 1+2);
+    ioutp += textureGatherOffset(isamp2DA, vec3(0.1), ivec2(i));
+
+    outp += gl_FragCoord + vl2;
+    foo23();
+}
+