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SPV: Support texelFetch() on a textureBuffer (no sampler).

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Fixes Vulkan Khronos-internal issue 770.
This commit is contained in:
John Kessenich 2017-05-08 00:12:28 -06:00
parent a5c5fb6118
commit c10191d132
5 changed files with 96 additions and 3 deletions
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6
Test/baseResults/spv.specConstant.vert.out
View File

@ -13,7 +13,7 @@ Warning, version 400 is not yet complete; most version-specific features are pre
Source GLSL 400
Name 4 "main"
Name 9 "arraySize"
Name 14 "foo(vf4[s1518];"
Name 14 "foo(vf4[s1521];"
Name 13 "p"
Name 17 "builtin_spec_constant("
Name 20 "color"
@ -104,10 +104,10 @@ Warning, version 400 is not yet complete; most version-specific features are pre
Store 20(color) 46
48: 10 Load 22(ucol)
Store 47(param) 48
49: 2 FunctionCall 14(foo(vf4[s1518];) 47(param)
49: 2 FunctionCall 14(foo(vf4[s1521];) 47(param)
Return
FunctionEnd
14(foo(vf4[s1518];): 2 Function None 12
14(foo(vf4[s1521];): 2 Function None 12
13(p): 11(ptr) FunctionParameter
15: Label
54: 24(ptr) AccessChain 53(dupUcol) 23

66
Test/baseResults/spv.textureBuffer.vert.out Executable file
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@ -0,0 +1,66 @@
spv.textureBuffer.vert
Warning, version 450 is not yet complete; most version-specific features are present, but some are missing.
// Module Version 10000
// Generated by (magic number): 80001
// Id's are bound by 42
Capability Shader
Capability SampledBuffer
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint Vertex 4 "main"
Source GLSL 450
Name 4 "main"
Name 9 "tBuf"
Name 13 "s"
Name 23 "sBuf"
Name 32 "utBuf"
Name 38 "itBuf"
Decorate 9(tBuf) DescriptorSet 0
Decorate 13(s) DescriptorSet 0
Decorate 23(sBuf) DescriptorSet 0
Decorate 32(utBuf) DescriptorSet 0
Decorate 38(itBuf) DescriptorSet 0
2: TypeVoid
3: TypeFunction 2
6: TypeFloat 32
7: TypeImage 6(float) Buffer sampled format:Unknown
8: TypePointer UniformConstant 7
9(tBuf): 8(ptr) Variable UniformConstant
11: TypeSampler
12: TypePointer UniformConstant 11
13(s): 12(ptr) Variable UniformConstant
15: TypeSampledImage 7
17: TypeInt 32 1
18: 17(int) Constant 13
20: TypeVector 6(float) 4
22: TypePointer UniformConstant 15
23(sBuf): 22(ptr) Variable UniformConstant
29: TypeInt 32 0
30: TypeImage 29(int) Buffer sampled format:Unknown
31: TypePointer UniformConstant 30
32(utBuf): 31(ptr) Variable UniformConstant
34: TypeVector 29(int) 4
36: TypeImage 17(int) Buffer sampled format:Unknown
37: TypePointer UniformConstant 36
38(itBuf): 37(ptr) Variable UniformConstant
40: TypeVector 17(int) 4
4(main): 2 Function None 3
5: Label
10: 7 Load 9(tBuf)
14: 11 Load 13(s)
16: 15 SampledImage 10 14
19: 7 Image 16
21: 20(fvec4) ImageFetch 19 18
24: 15 Load 23(sBuf)
25: 7 Image 24
26: 20(fvec4) ImageFetch 25 18
27: 7 Load 9(tBuf)
28: 20(fvec4) ImageFetch 27 18
33: 30 Load 32(utBuf)
35: 34(ivec4) ImageFetch 33 18
39: 36 Load 38(itBuf)
41: 40(ivec4) ImageFetch 39 18
Return
FunctionEnd

17
Test/spv.textureBuffer.vert Normal file
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@ -0,0 +1,17 @@
#version 450
uniform textureBuffer tBuf;
uniform sampler s;
uniform samplerBuffer sBuf;
uniform utextureBuffer utBuf;
uniform itextureBuffer itBuf;
void main()
{
texelFetch(samplerBuffer(tBuf, s), 13);
texelFetch(sBuf, 13);
texelFetch(tBuf, 13);
texelFetch(utBuf, 13);
texelFetch(itBuf, 13);
}

9
glslang/MachineIndependent/Initialize.cpp
View File

@ -3844,6 +3844,15 @@ void TBuiltIns::add2ndGenerationSamplingImaging(int version, EProfile profile, c
else {
addSamplingFunctions(sampler, typeName, version, profile);
addGatherFunctions(sampler, typeName, version, profile);
if (spvVersion.vulkan > 0 && sampler.dim == EsdBuffer && sampler.isCombined()) {
// Vulkan wants a textureBuffer to allow texelFetch() --
// a sampled image with no sampler.
// So, add sampling functions for both the
// samplerBuffer and textureBuffer types.
sampler.setTexture(sampler.type, sampler.dim, sampler.arrayed, sampler.shadow,
sampler.ms);
addSamplingFunctions(sampler, sampler.getString(), version, profile);
}
}
}
}

1
gtests/Spv.FromFile.cpp
View File

@ -283,6 +283,7 @@ INSTANTIATE_TEST_CASE_P(
"spv.test.vert",
"spv.texture.frag",
"spv.texture.vert",
"spv.textureBuffer.vert",
"spv.image.frag",
"spv.types.frag",
"spv.uint.frag",