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#ifndef SLANG_IR_LOWER_BUFFER_ELEMENT_TYPE_H
#define SLANG_IR_LOWER_BUFFER_ELEMENT_TYPE_H
#include "slang.h"
namespace Slang
{
struct IRModule;
class TargetProgram;
struct IRTypeLayoutRules;
struct IRType;
enum class IRTypeLayoutRuleName;
enum class BufferElementTypeLoweringPolicyKind
{
Default,
KhronosTarget,
MetalParameterBlock,
WGSL
};
struct BufferElementTypeLoweringOptions
{
BufferElementTypeLoweringPolicyKind loweringPolicyKind =
BufferElementTypeLoweringPolicyKind::Default;
};
// For each struct type S used as element type of a ConstantBuffer, ParameterBlock or
// [RW]StructuredBuffer, we create a lowered type L, where matrix types are lowered to arrays of
// vectors based on major-ness, and loads from the buffer are converted to L_to_S(load(buffer)), and
// stores to the buffer are converted to store(buffer, S_to_L(val)). This pass needs to take place
// after type legalization, and before array return type lowering because it may create functions
// that returns array typed values.
//
void lowerBufferElementTypeToStorageType(
TargetProgram* target,
IRModule* module,
BufferElementTypeLoweringOptions options = BufferElementTypeLoweringOptions());
// Returns the type layout rules should be used for a buffer resource type.
IRTypeLayoutRules* getTypeLayoutRuleForBuffer(TargetProgram* target, IRType* bufferType);
IRTypeLayoutRuleName getTypeLayoutRuleNameForBuffer(TargetProgram* target, IRType* bufferType);
} // namespace Slang
#endif
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