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#ifndef CPU_MEMORY_BINDING_H
#define CPU_MEMORY_BINDING_H
#include "core/slang-basic.h"
#include "core/slang-memory-arena.h"
namespace renderer_test {
struct CPUMemoryBinding
{
struct Buffer
{
Buffer() : m_data(nullptr), m_sizeInBytes(0) {}
uint8_t* m_data;
size_t m_sizeInBytes;
};
struct Location
{
bool isValid() const { return m_cur != nullptr; }
bool isInvalid() const { return m_cur == nullptr; }
Location toField(const char* name) const;
Location toIndex(int index) const;
slang::TypeLayoutReflection* getTypeLayout() const { return m_typeLayout; }
uint8_t* getPtr() const { return m_cur; }
SLANG_FORCE_INLINE Location():m_typeLayout(nullptr), m_cur(nullptr) {}
SLANG_FORCE_INLINE Location(slang::TypeLayoutReflection* typeLayout, uint8_t* ptr):
m_typeLayout(typeLayout),
m_cur(ptr)
{
}
protected:
slang::TypeLayoutReflection* m_typeLayout;
uint8_t* m_cur;
};
slang::VariableLayoutReflection* getParameterByName(const char* name);
slang::VariableLayoutReflection* getEntryPointParameterByName(const char* name);
/// Finds which buffer starts at the ptr index
Slang::Index findBufferIndex(const void* ptr) const;
Location find(const char* name);
SlangResult setBufferContents(const Location& location, const void* initialData, size_t sizeInBytes);
SlangResult setNewBuffer(const Location& location, const void* initialData, size_t sizeInBytes, Buffer& outBuffer);
SlangResult setObject(const Location& location, void* object);
SlangResult setInplace(const Location& location, const void* data, size_t sizeInBytes);
/// Initialize memory with a 'sensible' value based on type. Pointer types become null.
SlangResult initValue(slang::TypeLayoutReflection* typeLayout, void* dst);
SlangResult initValue(const Location& location) { return initValue(location.getTypeLayout(), location.getPtr()); }
/// Set the size of a *non fixed size* array at location.
/// A non fixed size array is reflected as having a count of 0 elements.
/// Only returns a buffer in outBuffer if a new buffer is created.
SlangResult setArrayCount(const Location& location, int count, Buffer& outBuffer);
SlangResult init(slang::ShaderReflection* reflection, int entryPointIndex);
CPUMemoryBinding();
Buffer _allocateBuffer(size_t size);
Buffer _allocateBuffer(size_t size, const void* initialData, size_t initialSize);
SlangResult _add(slang::VariableLayoutReflection* var, slang::TypeLayoutReflection* type, void* dst, Buffer& outBuffer);
Slang::MemoryArena m_arena; ///< Storage for buffers
Buffer m_rootBuffer;
Buffer m_entryPointBuffer;
slang::ShaderReflection* m_reflection;
// All buffers
Slang::List<Buffer> m_allBuffers;
slang::EntryPointReflection* m_entryPoint;
int m_entryPointIndex;
};
} // renderer_test
#endif //CPU_MEMORY_BINDING_H
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