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Standalone: Implement -D and -U for preprocessor macros.

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Works for both GLSL and HLSL.
Fixes #87.
This commit is contained in:
John Kessenich 2017-06-15 10:40:49 -06:00
parent 04acb1b7c9
commit a931366f56
7 changed files with 262 additions and 13 deletions
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19
glslang/MachineIndependent/ShaderLang.cpp
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@ -588,7 +588,7 @@ bool ProcessDeferred(
const char* customPreamble,
const EShOptimizationLevel optLevel,
const TBuiltInResource* resources,
int defaultVersion, // use 100 for ES environment, 110 for desktop; this is the GLSL version, not SPIR-V or Vulkan
int defaultVersion, // use 100 for ES environment, 110 for desktop; this is the GLSL version, not SPIR-V or Vulkan
EProfile defaultProfile,
// set version/profile to defaultVersion/defaultProfile regardless of the #version
// directive in the source code
@ -628,7 +628,7 @@ bool ProcessDeferred(
const char** names = new const char*[numTotal];
for (int s = 0; s < numStrings; ++s) {
strings[s + numPre] = shaderStrings[s];
if (inputLengths == 0 || inputLengths[s] < 0)
if (inputLengths == nullptr || inputLengths[s] < 0)
lengths[s + numPre] = strlen(shaderStrings[s]);
else
lengths[s + numPre] = inputLengths[s];
@ -643,12 +643,14 @@ bool ProcessDeferred(
// First, without using the preprocessor or parser, find the #version, so we know what
// symbol tables, processing rules, etc. to set up. This does not need the extra strings
// outlined above, just the user shader.
glslang::TInputScanner userInput(numStrings, &strings[numPre], &lengths[numPre]); // no preamble
// outlined above, just the user shader, after the system and user preambles.
glslang::TInputScanner userInput(numStrings, &strings[numPre], &lengths[numPre]);
int version = 0;
EProfile profile = ENoProfile;
bool versionNotFirstToken = false;
bool versionNotFirst = (messages & EShMsgReadHlsl) ? true : userInput.scanVersion(version, profile, versionNotFirstToken);
bool versionNotFirst = (messages & EShMsgReadHlsl) ?
true :
userInput.scanVersion(version, profile, versionNotFirstToken);
bool versionNotFound = version == 0;
if (forceDefaultVersionAndProfile && (messages & EShMsgReadHlsl) == 0) {
if (! (messages & EShMsgSuppressWarnings) && ! versionNotFound &&
@ -675,7 +677,8 @@ bool ProcessDeferred(
spvVersion.vulkan = 100; // TODO: eventually have this come from the outside
else if (spvVersion.spv != 0)
spvVersion.openGl = 100; // TODO: eventually have this come from the outside
bool goodVersion = DeduceVersionProfile(compiler->infoSink, compiler->getLanguage(), versionNotFirst, defaultVersion, source, version, profile, spvVersion);
bool goodVersion = DeduceVersionProfile(compiler->infoSink, compiler->getLanguage(),
versionNotFirst, defaultVersion, source, version, profile, spvVersion);
bool versionWillBeError = (versionNotFound || (profile == EEsProfile && version >= 300 && versionNotFirst));
bool warnVersionNotFirst = false;
if (! versionWillBeError && versionNotFirstToken) {
@ -696,7 +699,7 @@ bool ProcessDeferred(
if (messages & EShMsgDebugInfo) {
intermediate.setSourceFile(names[numPre]);
for (int s = 0; s < numStrings; ++s)
intermediate.addSourceText(strings[numPre]);
intermediate.addSourceText(strings[numPre + s]);
}
SetupBuiltinSymbolTable(version, profile, spvVersion, source);
@ -726,7 +729,7 @@ bool ProcessDeferred(
compiler->getLanguage(), compiler->infoSink,
spvVersion, forwardCompatible, messages, false, sourceEntryPointName);
TPpContext ppContext(*parseContext, names[numPre]? names[numPre]: "", includer);
TPpContext ppContext(*parseContext, names[numPre] ? names[numPre] : "", includer);
// only GLSL (bison triggered, really) needs an externally set scan context
glslang::TScanContext scanContext(*parseContext);