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Tie "location = " to the right stages/versions/extensions. Also add "#define extension 1" extension support and instructions.

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git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@23633 e7fa87d3-cd2b-0410-9028-fcbf551c1848
This commit is contained in:
John Kessenich 2013-10-22 00:21:04 +00:00
parent bf688510a8
commit c78a126ba6
14 changed files with 134 additions and 36 deletions
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29
glslang/MachineIndependent/Versions.cpp
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@ -77,8 +77,14 @@
// the first function below:
//
// extensionBehavior[XXX_extension_X] = EBhDisable;
//
// 3) Add any preprocessor directives etc. in the next function, TParseContext::getPreamble():
//
// "#define XXX_extension_X 1\n"
//
// The new-line is important, as that ends preprocess tokens.
//
// 3) Insert a profile check in the feature's path (unless all profiles support the feature,
// 4) Insert a profile check in the feature's path (unless all profiles support the feature,
// for some version level). That is, call requireProfile() to constrain the profiles, e.g.:
//
// // ... in a path specific to Feature F...
@ -86,7 +92,7 @@
// ECoreProfile | ECompatibilityProfile,
// "Feature F");
//
// 4) For each profile that supports the feature, insert version/extension checks:
// 5) For each profile that supports the feature, insert version/extension checks:
//
// The mostly likely scenario is that Feature F can only be used with a
// particular profile if XXX_extension_X is present or the version is
@ -123,7 +129,7 @@
//
// ~EEsProfile
//
// 5) If built-in symbols are added by the extension, add them in Initialize.cpp; see
// 6) If built-in symbols are added by the extension, add them in Initialize.cpp; see
// the comment at the top of that file for where to put them.
//
@ -142,6 +148,23 @@ void TParseContext::initializeExtensionBehavior()
extensionBehavior[GL_3DL_array_objects] = EBhDisable;
extensionBehavior[GL_ARB_shading_language_420pack] = EBhDisable;
extensionBehavior[GL_ARB_texture_gather] = EBhDisable;
extensionBehavior[GL_ARB_separate_shader_objects] = EBhDisable;
}
// Get code that is not part of a shared symbol table, is specific to this shader,
// or needed by the preprocessor (which does not use a shared symbol table).
const char* TParseContext::getPreamble()
{
if (profile == EEsProfile) {
return
"#define GL_ES 1\n";
} else {
return
"#define GL_ARB_texture_rectangle 1\n"
"#define GL_ARB_shading_language_420pack 1\n"
"#define GL_ARB_texture_gather 1\n"
"#define GL_ARB_separate_shader_objects 1\n";
}
}
//