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GLSL: Allow sample inputs in desktop < 400 with GL_ARB_sample_shading

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Neither legacy ES nor legacy desktop support these extensions
This commit is contained in:
rdb 2023-01-23 14:50:57 +01:00
parent 2202c2a701
commit d70bfa5f34
1 changed files with 15 additions and 9 deletions
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24
spirv_glsl.cpp
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@ -8966,17 +8966,21 @@ string CompilerGLSL::builtin_to_glsl(BuiltIn builtin, StorageClass storage)
return "gl_DrawIDARB";
case BuiltInSampleId:
if (options.es && options.version < 320)
if (is_legacy())
SPIRV_CROSS_THROW("Sample variables not supported in legacy GLSL.");
else if (options.es && options.version < 320)
require_extension_internal("GL_OES_sample_variables");
if (!options.es && options.version < 400)
SPIRV_CROSS_THROW("gl_SampleID not supported before GLSL 400.");
else if (!options.es && options.version < 400)
require_extension_internal("GL_ARB_sample_shading");
return "gl_SampleID";
case BuiltInSampleMask:
if (options.es && options.version < 320)
if (is_legacy())
SPIRV_CROSS_THROW("Sample variables not supported in legacy GLSL.");
else if (options.es && options.version < 320)
require_extension_internal("GL_OES_sample_variables");
if (!options.es && options.version < 400)
SPIRV_CROSS_THROW("gl_SampleMask/gl_SampleMaskIn not supported before GLSL 400.");
else if (!options.es && options.version < 400)
require_extension_internal("GL_ARB_sample_shading");
if (storage == StorageClassInput)
return "gl_SampleMaskIn";
@ -8984,10 +8988,12 @@ string CompilerGLSL::builtin_to_glsl(BuiltIn builtin, StorageClass storage)
return "gl_SampleMask";
case BuiltInSamplePosition:
if (options.es && options.version < 320)
if (is_legacy())
SPIRV_CROSS_THROW("Sample variables not supported in legacy GLSL.");
else if (options.es && options.version < 320)
require_extension_internal("GL_OES_sample_variables");
if (!options.es && options.version < 400)
SPIRV_CROSS_THROW("gl_SamplePosition not supported before GLSL 400.");
else if (!options.es && options.version < 400)
require_extension_internal("GL_ARB_sample_shading");
return "gl_SamplePosition";
case BuiltInViewIndex: