Add more tests for built-in variables.

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@21893 e7fa87d3-cd2b-0410-9028-fcbf551c1848

Test/300.frag

@@ -71,6 +71,9 @@ void main()
     dvec2 boo2;       // ERROR
     dvec3 boo3;       // ERROR
     dvec4 boo4;       // ERROR
+
+    f += gl_FragCoord.y;
+    gl_FragDepth = f;
 }
 
 float imageBuffer;    // ERROR, reserved

Test/300.vert

@@ -31,6 +31,9 @@ void main()
 
     mat3x2 op = outerProduct(v2, v3);
 
+    gl_Position = m44[2];
+    gl_PointSize = v2.y;
+
 #ifdef GL_ES
 #error GL_ES is set
 #else

Test/300block.frag

@@ -35,4 +35,5 @@ uniform barBlockArray {
 void main()
 {
     texture(s.sampler, vec3(inst.ni, bv.y, insts[2].nbv.z));
+    insts[s.v.x];  // ERROR
 }