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Minecraft.Client/PS3/SPU_Tasks/LevelRenderer_cull/LevelRenderer_cull.cpp

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+/* SCE CONFIDENTIAL
+PlayStation(R)3 Programmer Tool Runtime Library 430.001
+* Copyright (C) 2007 Sony Computer Entertainment Inc.
+* All Rights Reserved.
+*/
+
+/* common headers */
+#include <stdint.h>
+#include <stdlib.h>
+#include <alloca.h>
+#include <spu_intrinsics.h>
+#include <cell/spurs.h>
+#include <cell/dma.h>
+#include <cell/spurs/job_queue.h>
+
+#include "LevelRenderer_cull.h"
+#include "..\Common\DmaData.h"
+#include <vectormath/c/vectormath_aos_v.h>
+
+
+
+// #define SPU_HEAPSIZE (128*1024)
+// #define SPU_STACKSIZE (16*1024)
+// 
+// CELL_SPU_LS_PARAM(128*1024, 16*1024);	// can't use #defines here as it seems to  create an asm instruction
+
+
+static const bool sc_verbose = false;
+
+CellSpursJobContext2* g_pSpursJobContext;
+
+
+// The flag definitions
+static const int    CHUNK_FLAG_COMPILED		= 0x01;
+static const int    CHUNK_FLAG_DIRTY		= 0x02;
+static const int    CHUNK_FLAG_EMPTY0		= 0x04;
+static const int    CHUNK_FLAG_EMPTY1		= 0x08;
+static const int	CHUNK_FLAG_EMPTYBOTH	= 0x0c;
+static const int    CHUNK_FLAG_NOTSKYLIT	= 0x10;
+static const int	CHUNK_FLAG_REF_MASK		= 0x07;
+static const int	CHUNK_FLAG_REF_SHIFT	= 5;
+
+
+bool inline clip(float *bb, float *frustum)
+{
+	for (int i = 0; i < 6; ++i, frustum += 4)
+	{
+		if (frustum[0] * (bb[0]) + frustum[1] * (bb[1]) + frustum[2] * (bb[2]) + frustum[3] > 0) continue;
+		if (frustum[0] * (bb[3]) + frustum[1] * (bb[1]) + frustum[2] * (bb[2]) + frustum[3] > 0) continue;
+		if (frustum[0] * (bb[0]) + frustum[1] * (bb[4]) + frustum[2] * (bb[2]) + frustum[3] > 0) continue;
+		if (frustum[0] * (bb[3]) + frustum[1] * (bb[4]) + frustum[2] * (bb[2]) + frustum[3] > 0) continue;
+		if (frustum[0] * (bb[0]) + frustum[1] * (bb[1]) + frustum[2] * (bb[5]) + frustum[3] > 0) continue;
+		if (frustum[0] * (bb[3]) + frustum[1] * (bb[1]) + frustum[2] * (bb[5]) + frustum[3] > 0) continue;
+		if (frustum[0] * (bb[0]) + frustum[1] * (bb[4]) + frustum[2] * (bb[5]) + frustum[3] > 0) continue;
+		if (frustum[0] * (bb[3]) + frustum[1] * (bb[4]) + frustum[2] * (bb[5]) + frustum[3] > 0) continue;
+		return false;
+	}
+	return true;
+}
+
+class PPUStoreArray
+{
+	static const int sc_cacheSize = 128;
+	int m_localCache[128];
+	int* m_pDataPPU;
+	int m_cachePos;
+	int m_ppuPos;
+
+public:
+	PPUStoreArray(uintptr_t pDataPPU) { m_pDataPPU = (int*)pDataPPU; m_cachePos = 0; m_ppuPos = 0;}
+
+	void store(int val)
+	{
+		m_localCache[m_cachePos] = val;
+		m_cachePos++;
+		if(m_cachePos >= sc_cacheSize)
+			flush();
+	}
+
+	void flush()
+	{
+		if(m_cachePos > 0)
+		{
+			// dma the local cache back to PPU and start again
+// 			spu_print("DMAing %d bytes from 0x%08x(SPU) to 0x%08x(PPU)\n",(int)( m_cachePos*sizeof(int)), (int)m_localCache, (int)&m_pDataPPU[m_ppuPos]);
+			DmaData_SPU::put(m_localCache, (uintptr_t)&m_pDataPPU[m_ppuPos], DmaData_SPU::roundUpDMASize(m_cachePos*sizeof(int)));
+			m_ppuPos += m_cachePos;
+			m_cachePos = 0;
+		}
+	}
+	int getSize() { return m_ppuPos; }
+};
+
+void cull(LevelRenderer_cull_DataIn* dataIn, LevelRenderer_cull_DataIn* eaDataIn)
+{
+	ClipChunk_SPU chunkDoubleBuffer[2];		
+	int chunkIdx = 0;
+ 	unsigned char* globalChunkFlags = (unsigned char*)alloca(dataIn->numGlobalChunks);		// 164K !!!
+ 	DmaData_SPU::getAndWait(globalChunkFlags, (uintptr_t)dataIn->pGlobalChunkFlags, sizeof(unsigned char)*dataIn->numGlobalChunks);
+
+	PPUStoreArray layer0List((uintptr_t)dataIn->listArray_layer0);
+	PPUStoreArray layer1List((uintptr_t)dataIn->listArray_layer1);
+
+	PPUStoreArray layer0ZDepth((uintptr_t)dataIn->zDepth_layer0);
+	PPUStoreArray layer1ZDepth((uintptr_t)dataIn->zDepth_layer1);
+	float xOff = dataIn->clipMat[3][0];
+	float yOff = dataIn->clipMat[3][1];
+	float zOff = dataIn->clipMat[3][2];
+	dataIn->clipMat[3][0] = 0;
+	dataIn->clipMat[3][1] = 0;
+	dataIn->clipMat[3][2] = 0;
+
+
+
+
+	// DMA up the first chunk
+	if(dataIn->numClipChunks > 0)
+		DmaData_SPU::get(&chunkDoubleBuffer[chunkIdx], (uintptr_t)&dataIn->pClipChunks[0], sizeof(ClipChunk_SPU));
+
+	for(int i=0;i<dataIn->numClipChunks; i++)
+	{
+		DmaData_SPU::wait();// wait for the last chunk to have been uploaded
+		ClipChunk_SPU& chunk = chunkDoubleBuffer[chunkIdx];
+		chunkIdx ^= 1;
+		// queue up the next chunk
+		DmaData_SPU::get(&chunkDoubleBuffer[chunkIdx], (uintptr_t)&dataIn->pClipChunks[i+1], sizeof(ClipChunk_SPU));
+
+		Vectormath::Aos::Vector4 pos(chunk.aabb[0] + xOff, chunk.aabb[1] + yOff, chunk.aabb[2]  + zOff, 1.0f);
+		Vectormath::Aos::Vector4 transPos = dataIn->clipMat * pos;
+		float zDepth = -transPos.getZ();
+// 		spu_print("z val = %f : maxDepth = %f\n", zDepth, dataIn->maxDepthRender);
+		if(zDepth > dataIn->maxDepthRender || chunk.aabb[1] < dataIn->maxHeightRender )
+			chunk.visible = false;
+		else
+		{
+			unsigned char flags = chunk.globalIdx == -1 ? 0 : globalChunkFlags[ chunk.globalIdx ];
+			chunk.visible = false;
+			if ( (flags & CHUNK_FLAG_COMPILED ) && ( ( flags & CHUNK_FLAG_EMPTYBOTH ) != CHUNK_FLAG_EMPTYBOTH ) )
+			{
+				chunk.visible = clip(chunk.aabb, dataIn->fdraw);
+			}
+		}
+		// write the visible flag directly into the chunk structure on PPU
+		DmaData_SPU::put(&chunk, (uintptr_t)&dataIn->pClipChunks[i], 16);// only DMA the first 16 bytes, as they contain the visible flag we need to pass back
+
+		// add the data for renderChunks
+		if( !chunk.visible ) 
+			continue;													// This will be set if the chunk isn't visible, or isn't compiled, or has both empty flags set
+		if( chunk.globalIdx == -1 ) 
+			continue;												// Not sure if we should ever encounter this... TODO check
+		int layer = 0;
+// 		zDepth /= transPos.getW(); 
+		if( ( globalChunkFlags[chunk.globalIdx] & CHUNK_FLAG_EMPTY0 ) == 0)	// Check that this particular layer isn't empty
+		{
+			// List can be calculated directly from the chunk's global index
+			int list = chunk.globalIdx * 2 + layer;
+			list += dataIn->chunkLists;
+			layer0List.store(list);
+			layer0ZDepth.store(*((int*)&zDepth));
+		}
+
+		layer = 1;
+		if( ( globalChunkFlags[chunk.globalIdx] & CHUNK_FLAG_EMPTY1 ) == 0)	// Check that this particular layer isn't empty
+		{
+			// List can be calculated directly from the chunk's global idex
+			int list = chunk.globalIdx * 2 + layer;
+			list += dataIn->chunkLists;
+			layer1List.store(list);
+			layer0ZDepth.store(*((int*)&zDepth));
+		}
+	}
+	layer0List.flush();
+	layer1List.flush();
+	layer0ZDepth.flush();
+	cellDmaPutUint32(layer0List.getSize(), (uintptr_t)&eaDataIn->numToRender_layer0, 0, 0, 0);
+	cellDmaPutUint32(layer1List.getSize(), (uintptr_t)&eaDataIn->numToRender_layer1, 0, 0, 0);
+
+}
+
+
+
+
+void cellSpursJobQueueMain(CellSpursJobContext2 *pContext, CellSpursJob256 *pJob)
+{
+	// 	CellSpursTaskId idTask = cellSpursGetTaskId();
+	unsigned int idSpu = cellSpursGetCurrentSpuId();
+
+	if(sc_verbose)
+		spu_print("LevelRenderer_cull [SPU#%u] start\n", idSpu);
+
+	g_pSpursJobContext = pContext;
+	uint32_t eaDataIn = pJob->workArea.userData[0];						
+// 	uint32_t eaDataOut =pJob->workArea.userData[1];
+
+	LevelRenderer_cull_DataIn dataIn;
+	DmaData_SPU::getAndWait(&dataIn, eaDataIn, sizeof(LevelRenderer_cull_DataIn));
+
+	if(sc_verbose)
+		spu_print("LevelRenderer_cull [SPU#%u] DMA'd input data, ready to cull %d chunks\n", idSpu, dataIn.numClipChunks);
+
+	int numForDMA = dataIn.numClipChunks;
+	if(numForDMA % 16)
+	{
+		numForDMA &= ~0x0f;
+		numForDMA += 0x10;
+	}
+
+	cull(&dataIn, (LevelRenderer_cull_DataIn*)eaDataIn);
+// 	DmaData_SPU::putAndWait(outputData, eaDataOut, sizeof(char) * numForDMA);
+
+
+	if(sc_verbose)
+		spu_print("LevelRenderer_cull [SPU#%u] exit\n", idSpu);
+}
+