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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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16
glslang/MachineIndependent/ParseHelper.cpp
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@ -4015,6 +4015,14 @@ void TParseContext::setLayoutQualifier(const TSourceLoc& loc, TPublicType& publi
publicType.shaderQualifiers.earlyFragmentTests = true;
return;
}
if (id == "post_depth_coverage") {
requireExtensions(loc, Num_post_depth_coverageEXTs, post_depth_coverageEXTs, "post depth coverage");
if (extensionTurnedOn(E_GL_ARB_post_depth_coverage)) {
publicType.shaderQualifiers.earlyFragmentTests = true;
}
publicType.shaderQualifiers.postDepthCoverage = true;
return;
}
for (TLayoutDepth depth = (TLayoutDepth)(EldNone + 1); depth < EldCount; depth = (TLayoutDepth)(depth+1)) {
if (id == TQualifier::getLayoutDepthString(depth)) {
requireProfile(loc, ECoreProfile | ECompatibilityProfile, "depth layout qualifier");
@ -4788,6 +4796,8 @@ void TParseContext::checkNoShaderLayouts(const TSourceLoc& loc, const TShaderQua
error(loc, message, "invocations", "");
if (shaderQualifiers.earlyFragmentTests)
error(loc, message, "early_fragment_tests", "");
if (shaderQualifiers.postDepthCoverage)
error(loc, message, "post_depth_coverage", "");
for (int i = 0; i < 3; ++i) {
if (shaderQualifiers.localSize[i] > 1)
error(loc, message, "local_size", "");
@ -6282,6 +6292,12 @@ void TParseContext::updateStandaloneQualifierDefaults(const TSourceLoc& loc, con
else
error(loc, "can only apply to 'in'", "early_fragment_tests", "");
}
if (publicType.shaderQualifiers.postDepthCoverage) {
if (publicType.qualifier.storage == EvqVaryingIn)
intermediate.setPostDepthCoverage();
else
error(loc, "can only apply to 'in'", "post_coverage_coverage", "");
}
if (publicType.shaderQualifiers.blendEquation) {
if (publicType.qualifier.storage != EvqVaryingOut)
error(loc, "can only apply to 'out'", "blend equation", "");