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// slang-emit-glsl.h
#ifndef SLANG_EMIT_GLSL_H
#define SLANG_EMIT_GLSL_H
#include "slang-emit-c-like.h"
#include "slang-glsl-extension-tracker.h"
namespace Slang
{
class GLSLSourceEmitter : public CLikeSourceEmitter
{
public:
typedef CLikeSourceEmitter Super;
virtual SlangResult init() SLANG_OVERRIDE;
GLSLSourceEmitter(const Desc& desc);
virtual RefObject* getExtensionTracker() SLANG_OVERRIDE { return m_glslExtensionTracker; }
protected:
virtual void emitParameterGroupImpl(IRGlobalParam* varDecl, IRUniformParameterGroupType* type) SLANG_OVERRIDE;
virtual void emitEntryPointAttributesImpl(IRFunc* irFunc, IREntryPointDecoration* entryPointDecor) SLANG_OVERRIDE;
virtual void emitImageFormatModifierImpl(IRInst* varDecl, IRType* varType) SLANG_OVERRIDE;
virtual void emitLayoutQualifiersImpl(IRVarLayout* layout) SLANG_OVERRIDE;
virtual void emitTextureOrTextureSamplerTypeImpl(IRTextureTypeBase* type, char const* baseName) SLANG_OVERRIDE { _emitGLSLTextureOrTextureSamplerType(type, baseName); }
virtual void emitPreprocessorDirectivesImpl() SLANG_OVERRIDE;
virtual void emitLayoutDirectivesImpl(TargetRequest* targetReq) SLANG_OVERRIDE;
virtual void emitRateQualifiersImpl(IRRate* rate) SLANG_OVERRIDE;
virtual void emitInterpolationModifiersImpl(IRInst* varInst, IRType* valueType, IRVarLayout* layout) SLANG_OVERRIDE;
virtual void emitSimpleTypeImpl(IRType* type) SLANG_OVERRIDE;
virtual void emitVectorTypeNameImpl(IRType* elementType, IRIntegerValue elementCount) SLANG_OVERRIDE;
virtual void emitVarDecorationsImpl(IRInst* varDecl) SLANG_OVERRIDE;
virtual void emitMatrixLayoutModifiersImpl(IRVarLayout* layout) SLANG_OVERRIDE;
virtual void handleRequiredCapabilitiesImpl(IRInst* inst) SLANG_OVERRIDE;
virtual bool tryEmitGlobalParamImpl(IRGlobalParam* varDecl, IRType* varType) SLANG_OVERRIDE;
virtual bool tryEmitInstExprImpl(IRInst* inst, const EmitOpInfo& inOuterPrec) SLANG_OVERRIDE;
virtual void emitSimpleValueImpl(IRInst* inst) SLANG_OVERRIDE;
virtual void emitLoopControlDecorationImpl(IRLoopControlDecoration* decl) SLANG_OVERRIDE;
void _emitGLSLTextureOrTextureSamplerType(IRTextureTypeBase* type, char const* baseName);
void _emitGLSLStructuredBuffer(IRGlobalParam* varDecl, IRHLSLStructuredBufferTypeBase* structuredBufferType);
void _emitGLSLByteAddressBuffer(IRGlobalParam* varDecl, IRByteAddressBufferTypeBase* byteAddressBufferType);
void _emitGLSLParameterGroup(IRGlobalParam* varDecl, IRUniformParameterGroupType* type);
void _emitGLSLPerVertexVaryingFragmentInput(IRGlobalParam* param, IRType* type);
void _emitGLSLImageFormatModifier(IRInst* var, IRTextureType* resourceType);
void _emitGLSLLayoutQualifiers(IRVarLayout* layout, EmitVarChain* inChain, LayoutResourceKind filter = LayoutResourceKind::None);
bool _emitGLSLLayoutQualifier(LayoutResourceKind kind, EmitVarChain* chain);
void _emitGLSLTypePrefix(IRType* type, bool promoteHalfToFloat = false);
void _requireGLSLExtension(const UnownedStringSlice& name);
void _requireGLSLVersion(ProfileVersion version);
void _requireGLSLVersion(int version);
void _requireSPIRVVersion(const SemanticVersion& version);
// Emit the `flat` qualifier if the underlying type
// of the variable is an integer type.
void _maybeEmitGLSLFlatModifier(IRType* valueType);
void _requireBaseType(BaseType baseType);
void _maybeEmitGLSLCast(IRType* castType, IRInst* inst);
/// Emit the legalized form of a bitwise or logical operation on a vector of `bool`.
///
/// This emits GLSL code that converts the operands of `inst` into vectors of
/// `uint`, then applies `op` bitwise to the result, and finally converts back
/// into the desired vector-of-bool `type`.
///
void _emitLegalizedBoolVectorBinOp(IRInst* inst, IRVectorType* type, const EmitOpInfo& op, const EmitOpInfo& inOuterPrec);
/// Try to emit specialized code for a logic binary op.
///
/// Returns true if specialized code was emitted, false if the default behavior should be used.
///
/// The `bitOp` parameter should be the bitwise equivalent of the logical op being emitted.
///
bool _tryEmitLogicalBinOp(IRInst* inst, const EmitOpInfo& bitOp, const EmitOpInfo& inOuterPrec);
/// Try to emit specialized code for a logic binary op.
///
/// Returns true if specialized code was emitted, false if the default behavior should be used.
///
/// The `bitOp` parameter should be the bitwise op being emitted.
/// The `bitOp` parameter should be the logical equivalent of `bitOp`
///
bool _tryEmitBitBinOp(IRInst* inst, const EmitOpInfo& bitOp, const EmitOpInfo& boolOp, const EmitOpInfo& inOuterPrec);
void _requireRayTracing();
void _emitSpecialFloatImpl(IRType* type, const char* valueExpr);
RefPtr<GLSLExtensionTracker> m_glslExtensionTracker;
};
}
#endif
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