BeeEngine/glslang-zig
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

The array size of gl_SampleMask and gl_SampleMaskIn is ceil(gl_MaxSamples/32)

Browse source 
Oes spec says:
    For the both the input array gl_SampleMaskIn[] and the output array gl_SampleMask[], bit B of mask M
    (gl_SampleMaskIn[M] or gl_SampleMask[M]) corresponds to sample 32*M+B. These arrays have
    ceil(gl_MaxSamples/32) elements, where gl_MaxSamples is the maximum number of color samples
    supported by the implementation.

    But glslang report error "array must have size before use length".

    layout(location = 0) out mediump vec4 fragColor;
    void main (void)
    {
    for (int i = 0; i < gl_SampleMask.length(); ++i)
    gl_SampleMask[i] = int(0xAAAAAAAA);

       fragColor = vec4(0.0, 1.0, 0.0, 1.0);
    }

* Add two test items, one is for gl_MaxSapmles = 32 and the other one is for gl_MaxSapmles = 64.
This commit is contained in:
jimihem 2023-12-30 05:23:16 +08:00 • committed by GitHub
parent 88c5373ee4
commit db4d6f85af
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
9 changed files with 402 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

7
glslang/MachineIndependent/ParseHelper.cpp
View file

@ -632,7 +632,7 @@ TIntermTyped* TParseContext::handleBracketDereference(const TSourceLoc& loc, TIn
else {
// input/output blocks either don't exist or can't be variably indexed
}
} else if (language == EShLangFragment && base->getQualifier().isPipeOutput())
} else if (language == EShLangFragment && base->getQualifier().isPipeOutput() && base->getQualifier().builtIn != EbvSampleMask)
requireProfile(base->getLoc(), ~EEsProfile, "variable indexing fragment shader output array");
else if (base->getBasicType() == EbtSampler && version >= 130) {
const char* explanation = "variable indexing sampler array";
@ -1759,6 +1759,11 @@ TIntermTyped* TParseContext::handleLengthMethod(const TSourceLoc& loc, TFunction
name == "gl_MeshPrimitivesNV") {
length = getIoArrayImplicitSize(type.getQualifier());
}
} else if (const auto typed = intermNode->getAsTyped()) {
if (typed->getQualifier().builtIn == EbvSampleMask) {
requireProfile(loc, EEsProfile, "the array size of gl_SampleMask and gl_SampleMaskIn is ceil(gl_MaxSamples/32)");
length = (resources.maxSamples + 31) / 32;
}
}
if (length == 0) {
if (intermNode->getAsSymbolNode() && isIoResizeArray(type))