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// slang-extension-tracker.cpp
#include "slang-extension-tracker.h"
namespace Slang
{
void ShaderExtensionTracker::appendExtensionRequireLinesForGLSL(StringBuilder& ioBuilder) const
{
for (const auto& extension : m_extensionPool.getSlices())
{
ioBuilder.append("#extension ");
ioBuilder.append(extension);
ioBuilder.append(" : require\n");
}
}
void ShaderExtensionTracker::appendExtensionRequireLinesForWGSL(StringBuilder& ioBuilder) const
{
for (const auto& extension : m_extensionPool.getSlices())
{
ioBuilder.append("enable ");
ioBuilder.append(extension);
ioBuilder.append(";\n");
}
}
void ShaderExtensionTracker::requireSPIRVVersion(const SemanticVersion& version)
{
if (version > m_spirvVersion)
{
m_spirvVersion = version;
}
}
void ShaderExtensionTracker::requireVersion(ProfileVersion version)
{
// Check if this profile is newer
if ((UInt)version > (UInt)m_profileVersion)
{
m_profileVersion = version;
}
}
void ShaderExtensionTracker::requireBaseTypeExtension(BaseType baseType)
{
uint32_t bit = 1 << int(baseType);
if (m_hasBaseTypeFlags & bit)
{
return;
}
switch (baseType)
{
case BaseType::UInt8:
case BaseType::Int8:
{
// https://github.com/KhronosGroup/GLSL/blob/master/extensions/ext/GL_EXT_shader_8bit_storage.txt
requireExtension(UnownedStringSlice::fromLiteral("GL_EXT_shader_8bit_storage"));
// https://github.com/KhronosGroup/GLSL/blob/master/extensions/ext/GL_EXT_shader_explicit_arithmetic_types.txt
requireExtension(
UnownedStringSlice::fromLiteral("GL_EXT_shader_explicit_arithmetic_types"));
break;
}
case BaseType::Half:
case BaseType::UInt16:
case BaseType::Int16:
{
// https://github.com/KhronosGroup/GLSL/blob/master/extensions/ext/GL_EXT_shader_16bit_storage.txt
requireExtension(UnownedStringSlice::fromLiteral("GL_EXT_shader_16bit_storage"));
// https://github.com/KhronosGroup/GLSL/blob/master/extensions/ext/GL_EXT_shader_explicit_arithmetic_types.txt
requireExtension(
UnownedStringSlice::fromLiteral("GL_EXT_shader_explicit_arithmetic_types"));
break;
}
case BaseType::UInt64:
case BaseType::Int64:
{
requireExtension(
UnownedStringSlice::fromLiteral("GL_EXT_shader_explicit_arithmetic_types_int64"));
m_hasBaseTypeFlags |= _getFlag(BaseType::UInt64) | _getFlag(BaseType::Int64) |
_getFlag(BaseType::IntPtr) | _getFlag(BaseType::UIntPtr);
break;
}
case BaseType::IntPtr:
case BaseType::UIntPtr:
{
#if SLANG_PTR_IS_64
requireExtension(
UnownedStringSlice::fromLiteral("GL_EXT_shader_explicit_arithmetic_types_int64"));
m_hasBaseTypeFlags |= _getFlag(BaseType::UInt64) | _getFlag(BaseType::Int64) |
_getFlag(BaseType::IntPtr) | _getFlag(BaseType::UIntPtr);
#endif
break;
}
}
m_hasBaseTypeFlags |= bit;
}
} // namespace Slang
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