SPV: Implement Vulkan version of GLSL (KHR_vulkan_glsl).

Test/vulkan.vert

@@ -0,0 +1,37 @@
+#version 450
+
+layout(input_attachment_index = 2) uniform subpassInput subD1;     // ERROR, not this stage
+layout(input_attachment_index = 2) uniform isubpassInput subD2;    // ERROR, not this stage
+layout(input_attachment_index = 2) uniform usubpassInput subD3;    // ERROR, not this stage
+layout(input_attachment_index = 2) uniform subpassInputMS subD4;   // ERROR, not this stage
+layout(input_attachment_index = 2) uniform isubpassInputMS subD5;  // ERROR, not this stage
+layout(input_attachment_index = 2) uniform usubpassInputMS subD6;  // ERROR, not this stage
+
+out vec4 color;
+
+layout(constant_id = 17) const ivec2 arraySizes = ivec2(12,13);    // ERROR, not a scalar
+layout(constant_id = 17) uniform sampler2D s2D;                    // ERROR, not the right type or qualifier
+layout(constant_id = 4000) const int c1 = 12;                      // ERROR, too big
+layout(constant_id = 4) const float c2[2] = float[2](1.0, 2.0);    // ERROR, not a scalar
+layout(constant_id = 4) in;
+
+void main()
+{
+    color = subpassLoad(subD1); // ERROR, no such function in this stage
+}
+
+layout(binding = 0) uniform atomic_uint aui;   // ERROR, no atomics in Vulkan
+layout(shared) uniform ub1n { int a; } ub1i;   // ERROR, no shared
+layout(packed) uniform ub2n { int a; } ub2i;   // ERROR, no packed
+
+layout(constant_id=222) const int arraySize = 4;
+
+void foo()
+{
+    int a1[arraySize];
+    int a2[arraySize] = a1;  // ERROR, can't use in initializer
+
+    a1 = a2;      // ERROR, can't assign, even though the same type
+    if (a1 == a2) // ERROR, can't compare either
+        ++color;
+}