WIP: CPU sample working with Texture2D (#1033)

* WIP: Memory binding.

* WIP for binding.

* Fix handling of writing to constant buffer.

* Fix bug in handling indices.

1 files changed, 62 insertions, 0 deletions

diff --git a/tools/render-test/cpu-memory-binding.h b/tools/render-test/cpu-memory-binding.h
new file mode 100644
index 000000000..4ca9091b8
--- /dev/null
+++ b/tools/render-test/cpu-memory-binding.h
@@ -0,0 +1,62 @@
+#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():m_cur(nullptr) {}
+
+        slang::TypeLayoutReflection* m_typeLayout;
+        uint8_t* m_cur;
+    };
+    
+    slang::VariableLayoutReflection* getParameterByName(const char* name);
+
+    Location find(const char* name);
+
+    Location toField(const Location& location, const char* name);
+    Location toIndex(const Location& location, int index);
+
+    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);
+
+    SlangResult init(slang::ShaderReflection* reflection);
+    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;
+
+    slang::ShaderReflection* m_reflection;
+    
+    // All buffers
+    Slang::List<Buffer> m_allBuffers;
+};
+
+} // renderer_test
+
+#endif //CPU_MEMORY_BINDING_H