*misc

1 files changed, 0 insertions, 206 deletions

diff --git a/Runtime/Graphics/GpuDataBuffer.cpp b/Runtime/Graphics/GpuDataBuffer.cpp
deleted file mode 100644
index d20be65..0000000
--- a/Runtime/Graphics/GpuDataBuffer.cpp
+++ /dev/null
@@ -1,206 +0,0 @@
-#include <math.h>
-
-#include "GpuDataBuffer.h"
-
-namespace GPU
-{
-
-	// 修改buffer数据要绑定到这个目标上，其他情况下用GetHandle()绑定到其他目标
-	// GL_COPY_READ_BUFFER
-	static const GLenum kBufferTarget = GL_COPY_WRITE_BUFFER;
-
-	DataBuffer::DataBuffer()
-	{
-		glGenBuffers(1, &m_Handle);
-	}
-
-	DataBuffer::~DataBuffer()
-	{
-		glDeleteBuffers(1, &m_Handle);
-	}
-
-	void DataBuffer::Restore(int size, GLenum usage)
-	{
-		RestoreWithData(size, usage, 0);
-	}
-
-	void DataBuffer::RestoreWithData(int size, GLenum usage, const void* data)
-	{
-		glBindBuffer(kBufferTarget, m_Handle);
-		glBufferData(kBufferTarget, size, data, usage);
-		glBindBuffer(kBufferTarget, 0);
-		m_Size = size; 
-		m_Usage = usage;
-	}
-
-	// glBufferSubData
-	// glMapBuffer
-	// glMapBufferRange (best one)
-
-	void DataBuffer::Upload(int offset, int size, const void* data)
-	{
-		glBindBuffer(kBufferTarget, m_Handle);
-		glBufferSubData(kBufferTarget, offset, size, data);
-		glBindBuffer(kBufferTarget, 0);
-	}
-
-	void* DataBuffer::Map(uint32 access)
-	{
-		glBindBuffer(kBufferTarget, m_Handle);
-		void* ptr = glMapBuffer(kBufferTarget, access);
-		glBindBuffer(kBufferTarget, 0);
-		return ptr;
-	}
-
-	void* DataBuffer::MapRange(int offset, int size, uint32 access)
-	{
-		glBindBuffer(kBufferTarget, m_Handle);
-		void* ptr = glMapBufferRange(kBufferTarget, offset, size, access);
-		glBindBuffer(kBufferTarget, 0);
-		return ptr;
-	}
-
-	void DataBuffer::FlushMapedRange(int offset, int size) 
-	{
-		glBindBuffer(kBufferTarget, m_Handle);
-		glFlushMappedBufferRange(kBufferTarget, offset, size);
-		glBindBuffer(kBufferTarget, 0);
-	}
-
-	void DataBuffer::UnMap() 
-	{
-		glBindBuffer(kBufferTarget, m_Handle);
-		glUnmapBuffer(kBufferTarget);
-		glBindBuffer(kBufferTarget, 0);
-	}
-
-	void DataBuffer::Orphan()
-	{
-		glBindBuffer(kBufferTarget, m_Handle);
-		glBufferData(kBufferTarget, 0, 0, GL_STREAM_DRAW);
-		glBindBuffer(kBufferTarget, 0);
-	}
-
-	static bool IsBufferPoolCreated = false; 
-
-	BufferPool::BufferPool()
-		:m_LiveBuffers()
-	{
-		Assert(!IsBufferPoolCreated);
-		IsBufferPoolCreated = true;
-	}
-
-	BufferPool::~BufferPool()
-	{
-
-	}
-
-	void BufferPool::Initialize()
-	{
-		for(int i = 0; i < kSizeClassCount; ++i)
-			m_LiveBuffers[i].clear();
-	}
-
-	static const float	kBufferAllocateWeight = 10.0f;			//! Default weight for buffer allocation from scratch.
-	static const float	kBufferSizeWeightFactor = 1.f / 8096.f;		//!< Weight factor for size difference.
-	static const float	kBufferUsageDiffWeight = 8.f;				//!< Weight factor for usage difference.
-
-	static int ComputeBufferWeight(DataBuffer* buffer, int desiredSize, GLenum desiredUsage)
-	{
-		const int bufferSize = buffer->GetSize(); 
-		const GLenum bufferUsage = buffer->GetUsage();
-
-		if(bufferSize == 0)
-			return kBufferAllocateWeight;
-
-		const int sizeDiff = std::abs(bufferSize - desiredSize);
-
-		return float(sizeDiff)*kBufferSizeWeightFactor + ((bufferUsage != desiredUsage) ? kBufferUsageDiffWeight : 0.f);
-	}
-
-	DataBuffer* BufferPool::ClaimBuffer(int size, GLenum usage)
-	{
-		const float maxWeight = kBufferAllocateWeight;
-		const int	maxCandidates = 5; // Number of potential candidates to consider actually.
-
-		const int sizeClass = GetSizeClass(size);
-		int			numCandidates = 0; // Number of potential candidates considered
-		int			bestBufferNdx = -1;
-		float		bestWeight = std::numeric_limits<float>::infinity();
-	
-		for (int idx = 0; idx < m_LiveBuffers[sizeClass].size(); ++idx)
-		{
-			DataBuffer* buffer = m_LiveBuffers[sizeClass][idx];
-			const float weight = ComputeBufferWeight(buffer, size, usage);
-	
-			if (weight < maxWeight && weight < bestWeight)
-			{
-				bestWeight = weight; 
-				bestBufferNdx = idx;
-				++numCandidates;
-			}
-		
-			if(numCandidates >= maxCandidates)
-				break; // Do not try other buffers, sorry.
-		}
-
-		if (bestBufferNdx >= 0)
-		{
-			DataBuffer* selectedBuffer = m_LiveBuffers[sizeClass][bestBufferNdx];
-
-			if (bestBufferNdx + 1 != m_LiveBuffers[sizeClass].size())
-				std::swap(m_LiveBuffers[sizeClass][bestBufferNdx], m_LiveBuffers[sizeClass].back());
-			m_LiveBuffers[sizeClass].pop_back();
-		
-			return selectedBuffer;
-		}
-		else 
-			return new DataBuffer();
-		
-	}
-
-	void BufferPool::ReleaseBuffer(DataBuffer* buffer)
-	{
-		InsertToLive(buffer);
-	}
-
-	void BufferPool::OnEndFrame()
-	{
-		UpdatePendingBuffersArray();
-	}
-
-	void BufferPool::UpdatePendingBuffersArray() 
-	{
-		
-	}
-
-	void BufferPool::InsertToLive(DataBuffer* buffer) 
-	{
-		const int bufferSize = buffer->GetSize();
-		const int sizeClass = GetSizeClass(bufferSize);
-
-		m_LiveBuffers[sizeClass].push_back(buffer);
-	}
-
-	uint BufferPool::GetSizeClass(uint bufferSize)
-	{
-		for (int idx = 0; idx < kSizeClassCount; ++idx)
-		{
-			if(bufferSize < GetSizeClassLimit(idx))
-				return idx;
-		}
-		Assert(false); // never reach here
-		return 0;
-	}
-
-	DataBuffer* ClaimBuffer(int size, GLenum usage )
-	{
-		return BufferPool::Instance()->ClaimBuffer(size, usage);
-	}
-
-	void ReleaseBuffer(DataBuffer* buffer) 
-	{
-		BufferPool::Instance()->ReleaseBuffer(buffer);
-	}
-
-}