Implement GL_EXT_shader_16bit_storage and GL_EXT_shader_8bit_storage extensions.
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.
diff --git a/SPIRV/GlslangToSpv.cpp b/SPIRV/GlslangToSpv.cpp
index ec1b530..d5fb1ac 100755
--- a/SPIRV/GlslangToSpv.cpp
+++ b/SPIRV/GlslangToSpv.cpp
@@ -2507,6 +2507,20 @@
}
}
+ const bool contains8BitType = node->getType().containsBasicType(glslang::EbtInt8) ||
+ node->getType().containsBasicType(glslang::EbtUint8);
+ if (contains8BitType) {
+ if (storageClass == spv::StorageClassPushConstant) {
+ builder.addExtension(spv::E_SPV_KHR_8bit_storage);
+ builder.addCapability(spv::CapabilityStoragePushConstant8);
+ } else if (storageClass == spv::StorageClassUniform) {
+ builder.addExtension(spv::E_SPV_KHR_8bit_storage);
+ builder.addCapability(spv::CapabilityUniformAndStorageBuffer8BitAccess);
+ if (node->getType().getQualifier().storage == glslang::EvqBuffer)
+ builder.addCapability(spv::CapabilityStorageBuffer8BitAccess);
+ }
+ }
+
const char* name = node->getName().c_str();
if (glslang::IsAnonymous(name))
name = "";