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Implement SPV_KHR_post_depth_coverage

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Added support for both extension GL_ARB_post_depth_coverage and GL_EXT_post_depth_coverage.
This commit is contained in:
chaoc
2017-06-30 17:14:30 -07:00
parent 994660208c
commit c120452754
20 changed files with 185 additions and 6 deletions
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3
SPIRV/GLSL.ext.KHR.h
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@@ -32,7 +32,7 @@ enum Op;
enum Capability;
static const int GLSLextKHRVersion = 100;
static const int GLSLextKHRRevision = 1;
static const int GLSLextKHRRevision = 2;
static const char* const E_SPV_KHR_shader_ballot = "SPV_KHR_shader_ballot";
static const char* const E_SPV_KHR_subgroup_vote = "SPV_KHR_subgroup_vote";
@@ -41,5 +41,6 @@ static const char* const E_SPV_KHR_multiview = "SPV_KHR_multi
static const char* const E_SPV_KHR_shader_draw_parameters = "SPV_KHR_shader_draw_parameters";
static const char* const E_SPV_KHR_16bit_storage = "SPV_KHR_16bit_storage";
static const char* const E_SPV_KHR_storage_buffer_storage_class = "SPV_KHR_storage_buffer_storage_class";
static const char* const E_SPV_KHR_post_depth_coverage = "SPV_KHR_post_depth_coverage";
#endif // #ifndef GLSLextKHR_H

6
SPIRV/GlslangToSpv.cpp
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@@ -980,6 +980,12 @@ TGlslangToSpvTraverser::TGlslangToSpvTraverser(const glslang::TIntermediate* gls
if (glslangIntermediate->getEarlyFragmentTests())
builder.addExecutionMode(shaderEntry, spv::ExecutionModeEarlyFragmentTests);
if (glslangIntermediate->getPostDepthCoverage()) {
builder.addCapability(spv::CapabilitySampleMaskPostDepthCoverage);
builder.addExecutionMode(shaderEntry, spv::ExecutionModePostDepthCoverage);
builder.addExtension(spv::E_SPV_KHR_post_depth_coverage);
}
switch(glslangIntermediate->getDepth()) {
case glslang::EldGreater: mode = spv::ExecutionModeDepthGreater; break;
case glslang::EldLess: mode = spv::ExecutionModeDepthLess; break;

2
SPIRV/doc.cpp
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@@ -175,6 +175,7 @@ const char* ExecutionModeString(int mode)
case 31: return "ContractionOff";
case 32: return "Bad";
case 4446: return "PostDepthCoverage";
case ExecutionModeCeiling:
default: return "Bad";
}
@@ -843,6 +844,7 @@ const char* CapabilityString(int info)
case 5009: return "ImageGatherBiasLodAMD";
#endif
case 4447: return "SampleMaskPostDepthCoverage";
#ifdef NV_EXTENSIONS
case 5251: return "GeometryShaderPassthroughNV";
case 5254: return "ShaderViewportIndexLayerNV";

6
SPIRV/spirv.hpp
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@@ -47,11 +47,11 @@ namespace spv {
typedef unsigned int Id;
#define SPV_VERSION 0x10000
#define SPV_REVISION 10
#define SPV_REVISION 11
static const unsigned int MagicNumber = 0x07230203;
static const unsigned int Version = 0x00010000;
static const unsigned int Revision = 10;
static const unsigned int Revision = 11;
static const unsigned int OpCodeMask = 0xffff;
static const unsigned int WordCountShift = 16;
@@ -122,6 +122,7 @@ enum ExecutionMode {
ExecutionModeOutputTriangleStrip = 29,
ExecutionModeVecTypeHint = 30,
ExecutionModeContractionOff = 31,
ExecutionModePostDepthCoverage = 4446,
ExecutionModeMax = 0x7fffffff,
};
@@ -628,6 +629,7 @@ enum Capability {
CapabilityMultiView = 4439,
CapabilityVariablePointersStorageBuffer = 4441,
CapabilityVariablePointers = 4442,
CapabilitySampleMaskPostDepthCoverage = 4447,
CapabilitySampleMaskOverrideCoverageNV = 5249,
CapabilityGeometryShaderPassthroughNV = 5251,
CapabilityShaderViewportIndexLayerNV = 5254,