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Avoid spuriously adding Geometry capability for vert, tesc, tese (#2462)

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Use of gl_Layer and gl_ViewportIndex in tessellation and vertex
shaders should not trigger the addition of the Geometry capability.

Fixes #2461

Added tests for use of gl_Layer and gl_ViewportIndex in a tessellation
evaluation shader.

Several tests for NVIDIA features for tessellation, vertex, or mesh
shaders now lose the Geometry or MultiViewport capabilities.
This is ok because the functionality is already covered by
the ShaderViewportIndexLayerNV capability.

The spv.meshShaderPerViewBuiltins.mesh test now fails validation
because the validator does not know that PrimitiveId (and possibly
other) builtins are enabled by the MeshShadingNV capability.
I filed https://github.com/KhronosGroup/SPIRV-Headers/issues/179 to
fix the grammar upstream.
This commit is contained in:
David Neto 2020-11-12 15:00:16 -05:00 committed by GitHub
parent 639f5461e3
commit fb53f83503
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
13 changed files with 87 additions and 11 deletions
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6
SPIRV/GlslangToSpv.cpp
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@ -725,7 +725,10 @@ spv::BuiltIn TGlslangToSpvTraverser::TranslateBuiltInDecoration(glslang::TBuiltI
return spv::BuiltInCullDistance;
case glslang::EbvViewportIndex:
if (glslangIntermediate->getStage() == EShLangGeometry ||
glslangIntermediate->getStage() == EShLangFragment) {
builder.addCapability(spv::CapabilityMultiViewport);
}
if (glslangIntermediate->getStage() == EShLangVertex ||
glslangIntermediate->getStage() == EShLangTessControl ||
glslangIntermediate->getStage() == EShLangTessEvaluation) {
@ -754,7 +757,10 @@ spv::BuiltIn TGlslangToSpvTraverser::TranslateBuiltInDecoration(glslang::TBuiltI
if (glslangIntermediate->getStage() == EShLangMeshNV) {
return spv::BuiltInLayer;
}
if (glslangIntermediate->getStage() == EShLangGeometry ||
glslangIntermediate->getStage() == EShLangFragment) {
builder.addCapability(spv::CapabilityGeometry);
}
if (glslangIntermediate->getStage() == EShLangVertex ||
glslangIntermediate->getStage() == EShLangTessControl ||
glslangIntermediate->getStage() == EShLangTessEvaluation) {

30
Test/baseResults/spv.layer.tese.out Normal file
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@ -0,0 +1,30 @@
spv.layer.tese
// Module Version 10000
// Generated by (magic number): 8000a
// Id's are bound by 10
Capability Tessellation
Capability ShaderViewportIndexLayerNV
Extension "SPV_EXT_shader_viewport_index_layer"
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint TessellationEvaluation 4 "main" 8
ExecutionMode 4 Triangles
ExecutionMode 4 SpacingEqual
ExecutionMode 4 VertexOrderCcw
Source GLSL 450
SourceExtension "GL_ARB_shader_viewport_layer_array"
Name 4 "main"
Name 8 "gl_Layer"
Decorate 8(gl_Layer) BuiltIn Layer
2: TypeVoid
3: TypeFunction 2
6: TypeInt 32 1
7: TypePointer Output 6(int)
8(gl_Layer): 7(ptr) Variable Output
9: 6(int) Constant 1
4(main): 2 Function None 3
5: Label
Store 8(gl_Layer) 9
Return
FunctionEnd

1
Test/baseResults/spv.meshShaderBuiltins.mesh.out
View File

@ -5,7 +5,6 @@ spv.meshShaderBuiltins.mesh
Capability ClipDistance
Capability CullDistance
Capability MultiViewport
Capability DrawParameters
Capability ShaderViewportMaskNV
Capability MeshShadingNV

2
Test/baseResults/spv.meshShaderPerViewBuiltins.mesh.out
View File

@ -1,9 +1,9 @@
spv.meshShaderPerViewBuiltins.mesh
Validation failed
// Module Version 10000
// Generated by (magic number): 8000a
// Id's are bound by 126
Capability MultiViewport
Capability PerViewAttributesNV
Capability MeshShadingNV
Extension "SPV_NVX_multiview_per_view_attributes"

1
Test/baseResults/spv.meshShaderRedeclBuiltins.mesh.out
View File

@ -5,7 +5,6 @@ spv.meshShaderRedeclBuiltins.mesh
Capability ClipDistance
Capability CullDistance
Capability MultiViewport
Capability ShaderViewportMaskNV
Capability MeshShadingNV
Extension "SPV_NV_mesh_shader"

1
Test/baseResults/spv.stereoViewRendering.tesc.out
View File

@ -3,7 +3,6 @@ spv.stereoViewRendering.tesc
// Generated by (magic number): 8000a
// Id's are bound by 42
Capability Geometry
Capability Tessellation
Capability ShaderViewportIndexLayerNV
Capability ShaderViewportMaskNV

1
Test/baseResults/spv.stereoViewRendering.vert.out
View File

@ -4,7 +4,6 @@ spv.stereoViewRendering.vert
// Id's are bound by 27
Capability Shader
Capability Geometry
Capability ShaderViewportIndexLayerNV
Capability ShaderViewportMaskNV
Capability ShaderStereoViewNV

2
Test/baseResults/spv.viewportArray2.tesc.out
View File

@ -4,9 +4,7 @@ Validation failed
// Generated by (magic number): 8000a
// Id's are bound by 25
Capability Geometry
Capability Tessellation
Capability MultiViewport
Capability ShaderViewportIndexLayerNV
Capability ShaderViewportMaskNV
Extension "SPV_EXT_shader_viewport_index_layer"

2
Test/baseResults/spv.viewportArray2.vert.out
View File

@ -4,8 +4,6 @@ spv.viewportArray2.vert
// Id's are bound by 19
Capability Shader
Capability Geometry
Capability MultiViewport
Capability ShaderViewportIndexLayerNV
Capability ShaderViewportMaskNV
Extension "SPV_EXT_shader_viewport_index_layer"

30
Test/baseResults/spv.viewportindex.tese.out Normal file
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@ -0,0 +1,30 @@
spv.viewportindex.tese
// Module Version 10000
// Generated by (magic number): 8000a
// Id's are bound by 10
Capability Tessellation
Capability ShaderViewportIndexLayerNV
Extension "SPV_EXT_shader_viewport_index_layer"
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint TessellationEvaluation 4 "main" 8
ExecutionMode 4 Triangles
ExecutionMode 4 SpacingEqual
ExecutionMode 4 VertexOrderCcw
Source GLSL 450
SourceExtension "GL_ARB_shader_viewport_layer_array"
Name 4 "main"
Name 8 "gl_ViewportIndex"
Decorate 8(gl_ViewportIndex) BuiltIn ViewportIndex
2: TypeVoid
3: TypeFunction 2
6: TypeInt 32 1
7: TypePointer Output 6(int)
8(gl_ViewportIndex): 7(ptr) Variable Output
9: 6(int) Constant 1
4(main): 2 Function None 3
5: Label
Store 8(gl_ViewportIndex) 9
Return
FunctionEnd

8
Test/spv.layer.tese Normal file
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@ -0,0 +1,8 @@
#version 450
#extension GL_ARB_shader_viewport_layer_array : require
layout(triangles) in;
void main() {
gl_Layer = 1;
}

8
Test/spv.viewportindex.tese Normal file
View File

@ -0,0 +1,8 @@
#version 450
#extension GL_ARB_shader_viewport_layer_array : require
layout(triangles) in;
void main() {
gl_ViewportIndex = 1;
}

2
gtests/Spv.FromFile.cpp
View File

@ -352,6 +352,7 @@ INSTANTIATE_TEST_SUITE_P(
"spv.int64.frag",
"spv.intcoopmat.comp",
"spv.intOps.vert",
"spv.layer.tese",
"spv.layoutNested.vert",
"spv.length.frag",
"spv.localAggregates.frag",
@ -439,6 +440,7 @@ INSTANTIATE_TEST_SUITE_P(
"spv.terminate.frag",
"spv.precise.tese",
"spv.precise.tesc",
"spv.viewportindex.tese",
"spv.volatileAtomic.comp",
"spv.vulkan100.subgroupArithmetic.comp",
"spv.vulkan100.subgroupPartitioned.comp",