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Add support for es extension GL_EXT_blend_func_extended

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* Introduces builtin variables gl_SecondaryFragColorEXT and gl_SecondaryFragDataEXT
* Introduces builtin constant gl_MaxDualSourceDrawBuffersEXT
* enables support for layout qualifier "index" in es profile
This commit is contained in:
Pankaj Mistry 2020-04-21 11:33:57 -07:00
parent 2c53baedbb
commit e05cc20ec2
14 changed files with 173 additions and 65 deletions
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22
glslang/MachineIndependent/Initialize.cpp
View file

@ -6755,6 +6755,18 @@ void TBuiltIns::initialize(const TBuiltInResource &resources, int version, EProf
s.append(builtInConstant);
}
if (version >= 100) {
// GL_EXT_blend_func_extended
snprintf(builtInConstant, maxSize, "const mediump int gl_MaxDualSourceDrawBuffersEXT = %d;", resources.maxDualSourceDrawBuffersEXT);
s.append(builtInConstant);
// this is here instead of with the others in initialize(version, profile) due to the dependence on gl_MaxDualSourceDrawBuffersEXT
if (language == EShLangFragment) {
s.append(
"mediump vec4 gl_SecondaryFragColorEXT;"
"mediump vec4 gl_SecondaryFragDataEXT[gl_MaxDualSourceDrawBuffersEXT];"
"\n");
}
}
} else {
// non-ES profile
@ -9119,6 +9131,16 @@ void TBuiltIns::identifyBuiltIns(int version, EProfile profile, const SpvVersion
symbolTable.insert(*new TVariable(NewPoolTString("gl_FragData"), fragData));
SpecialQualifier("gl_FragData", EvqFragColor, EbvFragData, symbolTable);
}
// GL_EXT_blend_func_extended
if (profile == EEsProfile && version >= 100) {
symbolTable.setVariableExtensions("gl_MaxDualSourceDrawBuffersEXT", 1, &E_GL_EXT_blend_func_extended);
symbolTable.setVariableExtensions("gl_SecondaryFragColorEXT", 1, &E_GL_EXT_blend_func_extended);
symbolTable.setVariableExtensions("gl_SecondaryFragDataEXT", 1, &E_GL_EXT_blend_func_extended);
SpecialQualifier("gl_SecondaryFragColorEXT", EvqVaryingOut, EbvSecondaryFragColorEXT, symbolTable);
SpecialQualifier("gl_SecondaryFragDataEXT", EvqVaryingOut, EbvSecondaryFragDataEXT, symbolTable);
}
break;
case EShLangTessControl:

4
glslang/MachineIndependent/ParseHelper.cpp
View file

@ -5412,10 +5412,10 @@ void TParseContext::setLayoutQualifier(const TSourceLoc& loc, TPublicType& publi
case EShLangFragment:
if (id == "index") {
requireProfile(loc, ECompatibilityProfile | ECoreProfile, "index layout qualifier on fragment output");
requireProfile(loc, ECompatibilityProfile | ECoreProfile | EEsProfile, "index layout qualifier on fragment output");
const char* exts[2] = { E_GL_ARB_separate_shader_objects, E_GL_ARB_explicit_attrib_location };
profileRequires(loc, ECompatibilityProfile | ECoreProfile, 330, 2, exts, "index layout qualifier on fragment output");
profileRequires(loc, EEsProfile ,310, E_GL_EXT_blend_func_extended, "index layout qualifier on fragment output");
// "It is also a compile-time error if a fragment shader sets a layout index to less than 0 or greater than 1."
if (value < 0 || value > 1) {
value = 0;

2
glslang/MachineIndependent/Versions.cpp
View file

@ -306,6 +306,7 @@ void TParseVersions::initializeExtensionBehavior()
extensionBehavior[E_GL_EXT_ray_tracing] = EBhDisable;
extensionBehavior[E_GL_EXT_ray_query] = EBhDisable;
extensionBehavior[E_GL_EXT_ray_flags_primitive_culling] = EBhDisable;
extensionBehavior[E_GL_EXT_blend_func_extended] = EBhDisable;
// OVR extensions
extensionBehavior[E_GL_OVR_multiview] = EBhDisable;
@ -365,6 +366,7 @@ void TParseVersions::getPreamble(std::string& preamble)
"#define GL_EXT_texture_buffer 1\n"
"#define GL_EXT_texture_cube_map_array 1\n"
"#define GL_EXT_shader_integer_mix 1\n"
"#define GL_EXT_blend_func_extended 1\n"
// OES matching AEP
"#define GL_OES_geometry_shader 1\n"

1
glslang/MachineIndependent/Versions.h
View file

@ -196,6 +196,7 @@ const char* const E_GL_EXT_debug_printf = "GL_EXT_debug_prin
const char* const E_GL_EXT_ray_tracing = "GL_EXT_ray_tracing";
const char* const E_GL_EXT_ray_query = "GL_EXT_ray_query";
const char* const E_GL_EXT_ray_flags_primitive_culling = "GL_EXT_ray_flags_primitive_culling";
const char* const E_GL_EXT_blend_func_extended = "GL_EXT_blend_func_extended";
// Arrays of extensions for the above viewportEXTs duplications