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Implement GL_EXT_shader_16bit_storage and GL_EXT_shader_8bit_storage extensions.

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These introduce limited support for 8/16-bit types such that they can only be accessed in buffer memory and converted to/from 32-bit types.

Contributed from Khronos-internal work.
This commit is contained in:
John Kessenich 2018-07-03 13:19:51 -06:00
parent eefab240f7
commit 312dcfb070
43 changed files with 6179 additions and 2765 deletions
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16
glslang/MachineIndependent/Scan.cpp
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@ -1110,6 +1110,7 @@ int TScanContext::tokenizeIdentifier()
afterType = true;
if (parseContext.symbolTable.atBuiltInLevel() ||
((parseContext.extensionTurnedOn(E_GL_KHX_shader_explicit_arithmetic_types) ||
parseContext.extensionTurnedOn(E_GL_EXT_shader_8bit_storage) ||
parseContext.extensionTurnedOn(E_GL_KHX_shader_explicit_arithmetic_types_int8)) &&
parseContext.profile != EEsProfile && parseContext.version >= 450))
return keyword;
@ -1130,6 +1131,7 @@ int TScanContext::tokenizeIdentifier()
#ifdef AMD_EXTENSIONS
parseContext.extensionTurnedOn(E_GL_AMD_gpu_shader_int16) ||
#endif
parseContext.extensionTurnedOn(E_GL_EXT_shader_16bit_storage) ||
parseContext.extensionTurnedOn(E_GL_KHX_shader_explicit_arithmetic_types) ||
parseContext.extensionTurnedOn(E_GL_KHX_shader_explicit_arithmetic_types_int16))))
return keyword;
@ -1201,6 +1203,20 @@ int TScanContext::tokenizeIdentifier()
case F16VEC2:
case F16VEC3:
case F16VEC4:
afterType = true;
if (parseContext.symbolTable.atBuiltInLevel() ||
(parseContext.profile != EEsProfile && parseContext.version >= 450 &&
(
#ifdef AMD_EXTENSIONS
parseContext.extensionTurnedOn(E_GL_AMD_gpu_shader_half_float) ||
#endif
parseContext.extensionTurnedOn(E_GL_EXT_shader_16bit_storage) ||
parseContext.extensionTurnedOn(E_GL_KHX_shader_explicit_arithmetic_types) ||
parseContext.extensionTurnedOn(E_GL_KHX_shader_explicit_arithmetic_types_float16))))
return keyword;
return identifierOrType();
case F16MAT2:
case F16MAT3:
case F16MAT4: