Initial checkin

BeefySysLib/gfx/DrawLayer.h

@@ -0,0 +1,118 @@
+#pragma once
+
+#include "Common.h"
+#include "util/SLIList.h"
+#include "fbx/FBXReader.h"
+#include "gfx/RenderCmd.h"
+#include "gfx/RenderDevice.h"
+
+NS_BF_BEGIN;
+
+class RenderWindow;
+class Texture;
+class Shader;
+class ShaderPass;
+class BFApp;
+class Vertex3D;
+class DrawLayer;
+class RenderState;
+
+#define MAX_TEXTURES 4
+
+class DrawBatch : public RenderCmd
+{
+public:
+	DrawLayer*				mDrawLayer;	
+	int						mId;
+
+	bool					mIsVertexBufferHead;
+	bool					mIsIndexBufferHead;
+
+	void*					mVertices;
+	int						mVtxSize;
+	int						mVtxIdx;
+	int						mAllocatedVertices;
+	
+	uint16*					mIndices;
+	int						mIdxIdx;
+	int						mAllocatedIndices;
+		
+	Texture*				mCurTextures[MAX_TEXTURES];
+
+public:
+	DrawBatch();
+	virtual ~DrawBatch();
+
+	virtual void			Free() override;
+
+	void					Clear();
+	DrawBatch*				AllocateChainedBatch(int minVtxCount, int minIdxCount);		
+	virtual void*			AllocTris(int vtxCount);
+	virtual void*			AllocStrip(int vtxCount);
+	virtual void			AllocIndexed(int vtxCount, int idxCount, void** verticesOut, uint16** indicesOut, uint16* idxOfsOut);	
+};
+
+#define DRAWBUFFER_CMDBUFFER_SIZE 64*1024
+
+
+
+class DrawLayer
+{
+public:			
+	SLIList<RenderCmd*>		mRenderCmdList;
+	DrawBatch*				mCurDrawBatch;
+
+	RenderWindow*			mRenderWindow;	
+	RenderDevice*			mRenderDevice;
+
+	void*					mIdxBuffer;
+	void*					mVtxBuffer;
+	void*					mRenderCmdBuffer;
+	int						mIdxByteIdx;
+	int						mVtxByteIdx;	
+	int						mRenderCmdByteIdx;
+
+	Texture*				mCurTextures[MAX_TEXTURES];
+	
+public:
+	template <typename T>
+	T*						AllocRenderCmd(int extraBytes = 0)
+	{ 
+		if (mRenderCmdByteIdx + sizeof(T) + extraBytes >= DRAWBUFFER_CMDBUFFER_SIZE)
+		{
+			mRenderCmdBuffer = mRenderDevice->mPooledRenderCmdBuffers.AllocMemoryBlock();
+			T* cmd = new(mRenderCmdBuffer) T();
+			cmd->mIsPoolHead = true;
+			mRenderCmdByteIdx = sizeof(T) + extraBytes;
+			return cmd;
+		}
+
+		T* cmd = new((uint8*)mRenderCmdBuffer + mRenderCmdByteIdx) T();
+		cmd->mIsPoolHead = false;
+		mRenderCmdByteIdx += sizeof(T) + extraBytes;
+		return cmd;
+	}
+
+public:		
+	void					CloseDrawBatch();
+	virtual DrawBatch*		CreateDrawBatch() = 0;	
+	virtual DrawBatch*		AllocateBatch(int minVtxCount, int minIdxCount);
+	void					QueueRenderCmd(RenderCmd* renderCmd);
+	virtual RenderCmd*		CreateSetTextureCmd(int textureIdx, Texture* texture) = 0;
+	virtual void			SetShaderConstantData(int slotIdx, void* constData, int size) = 0;
+	virtual void			SetShaderConstantDataTyped(int slotIdx, void* constData, int size, int* typeData, int typeCount);
+
+public:
+	DrawLayer();
+	virtual ~DrawLayer();
+
+	virtual void			Draw();
+	virtual void			Flush();
+	virtual void			Clear();
+	virtual void*			AllocTris(int vtxCount);
+	virtual void*			AllocStrip(int vtxCount);
+	virtual void			AllocIndexed(int vtxCount, int idxCount, void** verticesOut, uint16** indicesOut, uint16* idxOfsOut);
+	virtual void			SetTexture(int texIdx, Texture* texture);
+};
+
+NS_BF_END;