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GL_EXT_vulkan_glsl_relaxed - retarget gl_VertexID to gl_VertexIndex

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instead of allowing for multiple declarations of the variable in the
resulting SPIR-V, instead use a retargeted mechanism to cause references
to gl_VertexID and gl_InstanceID to use the gl_VertexIndex and
gl_InstanceIndex symbol.
This commit is contained in:
Malcolm Bechard 2021-09-16 17:40:49 -04:00
parent 80dcc36907
commit 05794b46a7
7 changed files with 133 additions and 59 deletions
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20
Test/baseResults/vk.relaxed.changeSet.vert.out
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@ -34,8 +34,8 @@ Shader version: 460
0:? 'Color' ( smooth out highp 4-component vector of float)
0:? 'UV' ( smooth out highp 2-component vector of float)
0:? 'anon@1' ( out block{ gl_Position 4-component vector of float Position gl_Position, gl_PointSize float PointSize gl_PointSize, out unsized 1-element array of float ClipDistance gl_ClipDistance, out unsized 1-element array of float CullDistance gl_CullDistance})
0:? 'gl_VertexID' ( in int VertexIndex)
0:? 'gl_InstanceID' ( in int InstanceIndex)
0:? 'gl_VertexIndex' ( in int VertexIndex)
0:? 'gl_InstanceIndex' ( in int InstanceIndex)
vk.relaxed.changeSet.frag
Shader version: 460
@ -108,8 +108,8 @@ Shader version: 460
0:? 'Color' ( smooth out highp 4-component vector of float)
0:? 'UV' ( smooth out highp 2-component vector of float)
0:? 'anon@1' ( out block{ gl_Position 4-component vector of float Position gl_Position, gl_PointSize float PointSize gl_PointSize, out 1-element array of float ClipDistance gl_ClipDistance, out 1-element array of float CullDistance gl_CullDistance})
0:? 'gl_VertexID' ( in int VertexIndex)
0:? 'gl_InstanceID' ( in int InstanceIndex)
0:? 'gl_VertexIndex' ( in int VertexIndex)
0:? 'gl_InstanceIndex' ( in int InstanceIndex)
Shader version: 460
gl_FragCoord origin is upper left
0:? Sequence
@ -162,8 +162,8 @@ gl_FragCoord origin is upper left
MemberName 28(gl_DefaultUniformBlock) 0 "projectionMatrix"
Name 30 ""
Name 34 "aPos"
Name 44 "gl_VertexID"
Name 45 "gl_InstanceID"
Name 44 "gl_VertexIndex"
Name 45 "gl_InstanceIndex"
Decorate 9(Color) Location 0
Decorate 11(aColor) Location 2
Decorate 15(UV) Location 1
@ -180,8 +180,8 @@ gl_FragCoord origin is upper left
Decorate 30 DescriptorSet 0
Decorate 30 Binding 0
Decorate 34(aPos) Location 0
Decorate 44(gl_VertexID) BuiltIn VertexIndex
Decorate 45(gl_InstanceID) BuiltIn InstanceIndex
Decorate 44(gl_VertexIndex) BuiltIn VertexIndex
Decorate 45(gl_InstanceIndex) BuiltIn InstanceIndex
2: TypeVoid
3: TypeFunction 2
6: TypeFloat 32
@ -212,8 +212,8 @@ gl_FragCoord origin is upper left
36: 6(float) Constant 0
37: 6(float) Constant 1065353216
43: TypePointer Input 25(int)
44(gl_VertexID): 43(ptr) Variable Input
45(gl_InstanceID): 43(ptr) Variable Input
44(gl_VertexIndex): 43(ptr) Variable Input
45(gl_InstanceIndex): 43(ptr) Variable Input
4(main): 2 Function None 3
5: Label
12: 7(fvec4) Load 11(aColor)