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

glslang AEP: Full semantics for *_shader_io_blocks.

Browse source 
git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@31490 e7fa87d3-cd2b-0410-9028-fcbf551c1848
This commit is contained in:
John Kessenich 2015-06-15 15:08:41 +00:00
parent f6deb6203a
commit 9e41f362a6
9 changed files with 323 additions and 24 deletions
Download patch file Download diff file Expand all files Collapse all files

43
glslang/MachineIndependent/ParseHelper.cpp
View file

@ -1653,8 +1653,13 @@ bool TParseContext::lValueErrorCheck(TSourceLoc loc, const char* op, TIntermType
if (node->getQualifier().readonly)
message = "can't modify a readonly buffer";
break;
default:
case EvqFragDepth:
// "In addition, it is an error to statically write to gl_FragDepth in the fragment shader."
if (profile == EEsProfile && intermediate.getEarlyFragmentTests())
message = "can't modify gl_FragDepth if using early_fragment_tests";
break;
default:
//
// Type that can't be written to?
//
@ -2632,7 +2637,12 @@ void TParseContext::nonInitConstCheck(TSourceLoc loc, TString& identifier, TType
//
TSymbol* TParseContext::redeclareBuiltinVariable(TSourceLoc loc, const TString& identifier, const TQualifier& qualifier, const TShaderQualifiers& publicType, bool& newDeclaration)
{
if (profile == EEsProfile || ! builtInName(identifier) || symbolTable.atBuiltInLevel() || ! symbolTable.atGlobalLevel())
if (! builtInName(identifier) || symbolTable.atBuiltInLevel() || ! symbolTable.atGlobalLevel())
return 0;
bool nonEsRedecls = (profile != EEsProfile && (version >= 130 || identifier == "gl_TexCoord"));
bool esRedecls = (profile == EEsProfile && extensionsTurnedOn(Num_AEP_shader_io_blocks, AEP_shader_io_blocks));
if (! esRedecls && ! nonEsRedecls)
return 0;
// Special case when using GL_ARB_separate_shader_objects
@ -2648,15 +2658,15 @@ TSymbol* TParseContext::redeclareBuiltinVariable(TSourceLoc loc, const TString&
// Potentially redeclaring a built-in variable...
if (ssoPre150 ||
(identifier == "gl_FragDepth" && version >= 420) ||
(identifier == "gl_FragCoord" && version >= 150) ||
(identifier == "gl_ClipDistance" && version >= 130) ||
(identifier == "gl_FrontColor" && version >= 130) ||
(identifier == "gl_BackColor" && version >= 130) ||
(identifier == "gl_FrontSecondaryColor" && version >= 130) ||
(identifier == "gl_BackSecondaryColor" && version >= 130) ||
(identifier == "gl_SecondaryColor" && version >= 130) ||
(identifier == "gl_Color" && version >= 130 && language == EShLangFragment) ||
(identifier == "gl_FragDepth" && ((nonEsRedecls && version >= 420) || esRedecls)) ||
(identifier == "gl_FragCoord" && ((nonEsRedecls && version >= 150) || esRedecls)) ||
identifier == "gl_ClipDistance" ||
identifier == "gl_FrontColor" ||
identifier == "gl_BackColor" ||
identifier == "gl_FrontSecondaryColor" ||
identifier == "gl_BackSecondaryColor" ||
identifier == "gl_SecondaryColor" ||
(identifier == "gl_Color" && language == EShLangFragment) ||
identifier == "gl_TexCoord") {
// Find the existing symbol, if any.
@ -2715,7 +2725,7 @@ TSymbol* TParseContext::redeclareBuiltinVariable(TSourceLoc loc, const TString&
if (qualifier.nopersp != symbolQualifier.nopersp || qualifier.flat != symbolQualifier.flat ||
qualifier.isMemory() || qualifier.isAuxiliary())
error(loc, "can only change layout qualification of", "redeclaration", symbol->getName().c_str());
if (identifier == "gl_FragCoord" && qualifier.storage != EvqVaryingIn)
if (qualifier.storage != EvqVaryingIn)
error(loc, "cannot change input storage qualification of", "redeclaration", symbol->getName().c_str());
if (! builtIn && (publicType.pixelCenterInteger != intermediate.getPixelCenterInteger() ||
publicType.originUpperLeft != intermediate.getOriginUpperLeft()))
@ -2753,7 +2763,7 @@ TSymbol* TParseContext::redeclareBuiltinVariable(TSourceLoc loc, const TString&
void TParseContext::redeclareBuiltinBlock(TSourceLoc loc, TTypeList& newTypeList, const TString& blockName, const TString* instanceName, TArraySizes* arraySizes)
{
const char* feature = "built-in block redeclaration";
requireProfile(loc, ~EEsProfile, feature);
profileRequires(loc, EEsProfile, 0, Num_AEP_shader_io_blocks, AEP_shader_io_blocks, feature);
profileRequires(loc, ~EEsProfile, 410, GL_ARB_separate_shader_objects, feature);
if (blockName != "gl_PerVertex" && blockName != "gl_PerFragment") {
@ -4603,8 +4613,9 @@ void TParseContext::declareBlock(TSourceLoc loc, TTypeList& typeList, const TStr
switch (currentBlockQualifier.storage) {
case EvqVaryingIn:
case EvqVaryingOut:
requireProfile(memberLoc, ECoreProfile | ECompatibilityProfile, feature);
requireProfile(memberLoc, ECoreProfile | ECompatibilityProfile | EEsProfile, feature);
profileRequires(memberLoc, ECoreProfile | ECompatibilityProfile, 440, GL_ARB_enhanced_layouts, feature);
profileRequires(memberLoc, EEsProfile, 0, Num_AEP_shader_io_blocks, AEP_shader_io_blocks, feature);
memberWithLocation = true;
break;
default:
@ -4752,7 +4763,9 @@ void TParseContext::blockStageIoCheck(TSourceLoc loc, TStorageQualifier storageQ
profileRequires(loc, ~EEsProfile, 150, GL_ARB_separate_shader_objects, "output block");
switch (language) {
case EShLangVertex:
profileRequires(loc, EEsProfile, 0, Num_AEP_shader_io_blocks, AEP_shader_io_blocks, "vertex output block");
// ES 310 can have a block before shader_io is turned on, so skip this test for built-ins
if (! parsingBuiltins)
profileRequires(loc, EEsProfile, 0, Num_AEP_shader_io_blocks, AEP_shader_io_blocks, "vertex output block");
if (profile == EEsProfile && arraySizes)
arraySizeRequiredCheck(loc, arraySizes->getSize());
break;