src/libGLESv2/renderer/d3d/VertexDataManager.cpp - platform/external/chromium_org/third_party/angle - Git at Google

 #include "precompiled.h"
 //
 // Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //

 // VertexDataManager.h: Defines the VertexDataManager, a class that
 // runs the Buffer translation process.

 #include "libGLESv2/renderer/d3d/VertexDataManager.h"
 #include "libGLESv2/renderer/d3d/BufferD3D.h"

 #include "libGLESv2/Buffer.h"
 #include "libGLESv2/ProgramBinary.h"
 #include "libGLESv2/VertexAttribute.h"
 #include "libGLESv2/renderer/d3d/VertexBuffer.h"
 #include "libGLESv2/renderer/Renderer.h"

 namespace
 {
     enum { INITIAL_STREAM_BUFFER_SIZE = 1024*1024 };
     // This has to be at least 4k or else it fails on ATI cards.
     enum { CONSTANT_VERTEX_BUFFER_SIZE = 4096 };
 }

 namespace rx
 {

 static int ElementsInBuffer(const gl::VertexAttribute &attrib, unsigned int size)
 {
     // Size cannot be larger than a GLsizei
     if (size > static_cast<unsigned int>(std::numeric_limits<int>::max()))
     {
         size = static_cast<unsigned int>(std::numeric_limits<int>::max());
     }

     GLsizei stride = ComputeVertexAttributeStride(attrib);
     return (size - attrib.offset % stride + (stride - ComputeVertexAttributeTypeSize(attrib))) / stride;
 }

 static int StreamingBufferElementCount(const gl::VertexAttribute &attrib, int vertexDrawCount, int instanceDrawCount)
 {
     // For instanced rendering, we draw "instanceDrawCount" sets of "vertexDrawCount" vertices.
     //
     // A vertex attribute with a positive divisor loads one instanced vertex for every set of
     // non-instanced vertices, and the instanced vertex index advances once every "mDivisor" instances.
     if (instanceDrawCount > 0 && attrib.divisor > 0)
     {
         return instanceDrawCount / attrib.divisor;
     }

     return vertexDrawCount;
 }

 VertexDataManager::VertexDataManager(Renderer *renderer) : mRenderer(renderer)
 {
     for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
     {
         mCurrentValue[i].FloatValues[0] = std::numeric_limits<float>::quiet_NaN();
         mCurrentValue[i].FloatValues[1] = std::numeric_limits<float>::quiet_NaN();
         mCurrentValue[i].FloatValues[2] = std::numeric_limits<float>::quiet_NaN();
         mCurrentValue[i].FloatValues[3] = std::numeric_limits<float>::quiet_NaN();
         mCurrentValue[i].Type = GL_FLOAT;
         mCurrentValueBuffer[i] = NULL;
         mCurrentValueOffsets[i] = 0;
     }

     mStreamingBuffer = new StreamingVertexBufferInterface(renderer, INITIAL_STREAM_BUFFER_SIZE);

     if (!mStreamingBuffer)
     {
         ERR("Failed to allocate the streaming vertex buffer.");
     }
 }

 VertexDataManager::~VertexDataManager()
 {
     delete mStreamingBuffer;

     for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
     {
         delete mCurrentValueBuffer[i];
     }
 }

 GLenum VertexDataManager::prepareVertexData(const gl::VertexAttribute attribs[], const gl::VertexAttribCurrentValueData currentValues[],
                                             gl::ProgramBinary *programBinary, GLint start, GLsizei count, TranslatedAttribute *translated, GLsizei instances)
 {
     if (!mStreamingBuffer)
     {
         return GL_OUT_OF_MEMORY;
     }

     for (int attributeIndex = 0; attributeIndex < gl::MAX_VERTEX_ATTRIBS; attributeIndex++)
     {
         translated[attributeIndex].active = (programBinary->getSemanticIndex(attributeIndex) != -1);
     }

     // Invalidate static buffers that don't contain matching attributes
     for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
     {
         if (translated[i].active && attribs[i].enabled)
         {
             gl::Buffer *buffer = attribs[i].buffer.get();

             if (buffer)
             {
                 BufferD3D *bufferImpl = BufferD3D::makeBufferD3D(buffer->getImplementation());
                 StaticVertexBufferInterface *staticBuffer = bufferImpl->getStaticVertexBuffer();

                 if (staticBuffer && staticBuffer->getBufferSize() > 0 && !staticBuffer->lookupAttribute(attribs[i], NULL) &&
                     !staticBuffer->directStoragePossible(attribs[i], currentValues[i]))
                 {
                     bufferImpl->invalidateStaticData();
                 }
             }
         }
     }

     // Reserve the required space in the buffers
     for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
     {
         if (translated[i].active && attribs[i].enabled)
         {
             gl::Buffer *buffer = attribs[i].buffer.get();
             BufferD3D *bufferImpl = buffer ? BufferD3D::makeBufferD3D(buffer->getImplementation()) : NULL;
             StaticVertexBufferInterface *staticBuffer = bufferImpl ? bufferImpl->getStaticVertexBuffer() : NULL;
             VertexBufferInterface *vertexBuffer = staticBuffer ? staticBuffer : static_cast<VertexBufferInterface*>(mStreamingBuffer);

             if (!vertexBuffer->directStoragePossible(attribs[i], currentValues[i]))
             {
                 if (staticBuffer)
                 {
                     if (staticBuffer->getBufferSize() == 0)
                     {
                         int totalCount = ElementsInBuffer(attribs[i], bufferImpl->getSize());
                         if (!staticBuffer->reserveVertexSpace(attribs[i], totalCount, 0))
                         {
                             return GL_OUT_OF_MEMORY;
                         }
                     }
                 }
                 else
                 {
                     int totalCount = StreamingBufferElementCount(attribs[i], count, instances);
                     ASSERT(!bufferImpl || ElementsInBuffer(attribs[i], bufferImpl->getSize()) >= totalCount);

                     if (!mStreamingBuffer->reserveVertexSpace(attribs[i], totalCount, instances))
                     {
                         return GL_OUT_OF_MEMORY;
                     }
                 }
             }
         }
     }

     // Perform the vertex data translations
     for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
     {
         if (translated[i].active)
         {
             GLenum result;

             if (attribs[i].enabled)
             {
                 result = storeAttribute(attribs[i], currentValues[i], &translated[i],
                                         start, count, instances);
             }
             else
             {
                 if (!mCurrentValueBuffer[i])
                 {
                     mCurrentValueBuffer[i] = new StreamingVertexBufferInterface(mRenderer, CONSTANT_VERTEX_BUFFER_SIZE);
                 }

                 result = storeCurrentValue(attribs[i], currentValues[i], &translated[i],
                                            &mCurrentValue[i], &mCurrentValueOffsets[i],
                                            mCurrentValueBuffer[i]);
             }

             if (result != GL_NO_ERROR)
             {
                 return result;
             }
         }
     }

     for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
     {
         if (translated[i].active && attribs[i].enabled)
         {
             gl::Buffer *buffer = attribs[i].buffer.get();

             if (buffer)
             {
                 BufferD3D *bufferImpl = BufferD3D::makeBufferD3D(buffer->getImplementation());
                 bufferImpl->promoteStaticUsage(count * ComputeVertexAttributeTypeSize(attribs[i]));
             }
         }
     }

     return GL_NO_ERROR;
 }

 GLenum VertexDataManager::storeAttribute(const gl::VertexAttribute &attrib,
                                          const gl::VertexAttribCurrentValueData &currentValue,
                                          TranslatedAttribute *translated,
                                          GLint start,
                                          GLsizei count,
                                          GLsizei instances)
 {
     gl::Buffer *buffer = attrib.buffer.get();
     ASSERT(buffer || attrib.pointer);

     BufferD3D *storage = buffer ? BufferD3D::makeBufferD3D(buffer->getImplementation()) : NULL;
     StaticVertexBufferInterface *staticBuffer = storage ? storage->getStaticVertexBuffer() : NULL;
     VertexBufferInterface *vertexBuffer = staticBuffer ? staticBuffer : static_cast<VertexBufferInterface*>(mStreamingBuffer);
     bool directStorage = vertexBuffer->directStoragePossible(attrib, currentValue);

     unsigned int streamOffset = 0;
     unsigned int outputElementSize = 0;

     if (directStorage)
     {
         outputElementSize = ComputeVertexAttributeStride(attrib);
         streamOffset = attrib.offset + outputElementSize * start;
     }
     else if (staticBuffer)
     {
         if (!staticBuffer->getVertexBuffer()->getSpaceRequired(attrib, 1, 0, &outputElementSize))
         {
             return GL_OUT_OF_MEMORY;
         }

         if (!staticBuffer->lookupAttribute(attrib, &streamOffset))
         {
             // Convert the entire buffer
             int totalCount = ElementsInBuffer(attrib, storage->getSize());
             int startIndex = attrib.offset / ComputeVertexAttributeStride(attrib);

             if (!staticBuffer->storeVertexAttributes(attrib, currentValue, -startIndex, totalCount,
                 0, &streamOffset))
             {
                 return GL_OUT_OF_MEMORY;
             }
         }

         unsigned int firstElementOffset = (attrib.offset / ComputeVertexAttributeStride(attrib)) * outputElementSize;
         unsigned int startOffset = (instances == 0 || attrib.divisor == 0) ? start * outputElementSize : 0;
         if (streamOffset + firstElementOffset + startOffset < streamOffset)
         {
             return GL_OUT_OF_MEMORY;
         }

         streamOffset += firstElementOffset + startOffset;
     }
     else
     {
         int totalCount = StreamingBufferElementCount(attrib, count, instances);
         if (!mStreamingBuffer->getVertexBuffer()->getSpaceRequired(attrib, 1, 0, &outputElementSize) ||
             !mStreamingBuffer->storeVertexAttributes(attrib, currentValue, start, totalCount, instances,
             &streamOffset))
         {
             return GL_OUT_OF_MEMORY;
         }
     }

     translated->storage = directStorage ? storage : NULL;
     translated->vertexBuffer = vertexBuffer->getVertexBuffer();
     translated->serial = directStorage ? storage->getSerial() : vertexBuffer->getSerial();
     translated->divisor = attrib.divisor;

     translated->attribute = &attrib;
     translated->currentValueType = currentValue.Type;
     translated->stride = outputElementSize;
     translated->offset = streamOffset;

     return GL_NO_ERROR;
 }

 GLenum VertexDataManager::storeCurrentValue(const gl::VertexAttribute &attrib,
                                             const gl::VertexAttribCurrentValueData &currentValue,
                                             TranslatedAttribute *translated,
                                             gl::VertexAttribCurrentValueData *cachedValue,
                                             size_t *cachedOffset,
                                             StreamingVertexBufferInterface *buffer)
 {
     if (*cachedValue != currentValue)
     {
         if (!buffer->reserveVertexSpace(attrib, 1, 0))
         {
             return GL_OUT_OF_MEMORY;
         }

         unsigned int streamOffset;
         if (!buffer->storeVertexAttributes(attrib, currentValue, 0, 1, 0, &streamOffset))
         {
             return GL_OUT_OF_MEMORY;
         }

         *cachedValue = currentValue;
         *cachedOffset = streamOffset;
     }

     translated->storage = NULL;
     translated->vertexBuffer = buffer->getVertexBuffer();
     translated->serial = buffer->getSerial();
     translated->divisor = 0;

     translated->attribute = &attrib;
     translated->currentValueType = currentValue.Type;
     translated->stride = 0;
     translated->offset = *cachedOffset;

     return GL_NO_ERROR;
 }

 }
	#include "precompiled.h"
	//
	// Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.
	//

	// VertexDataManager.h: Defines the VertexDataManager, a class that
	// runs the Buffer translation process.

	#include "libGLESv2/renderer/d3d/VertexDataManager.h"
	#include "libGLESv2/renderer/d3d/BufferD3D.h"

	#include "libGLESv2/Buffer.h"
	#include "libGLESv2/ProgramBinary.h"
	#include "libGLESv2/VertexAttribute.h"
	#include "libGLESv2/renderer/d3d/VertexBuffer.h"
	#include "libGLESv2/renderer/Renderer.h"

	namespace
	{
	enum { INITIAL_STREAM_BUFFER_SIZE = 1024*1024 };
	// This has to be at least 4k or else it fails on ATI cards.
	enum { CONSTANT_VERTEX_BUFFER_SIZE = 4096 };
	}

	namespace rx
	{

	static int ElementsInBuffer(const gl::VertexAttribute &attrib, unsigned int size)
	{
	// Size cannot be larger than a GLsizei
	if (size > static_cast<unsigned int>(std::numeric_limits<int>::max()))
	{
	size = static_cast<unsigned int>(std::numeric_limits<int>::max());
	}

	GLsizei stride = ComputeVertexAttributeStride(attrib);
	return (size - attrib.offset % stride + (stride - ComputeVertexAttributeTypeSize(attrib))) / stride;
	}

	static int StreamingBufferElementCount(const gl::VertexAttribute &attrib, int vertexDrawCount, int instanceDrawCount)
	{
	// For instanced rendering, we draw "instanceDrawCount" sets of "vertexDrawCount" vertices.
	//
	// A vertex attribute with a positive divisor loads one instanced vertex for every set of
	// non-instanced vertices, and the instanced vertex index advances once every "mDivisor" instances.
	if (instanceDrawCount > 0 && attrib.divisor > 0)
	{
	return instanceDrawCount / attrib.divisor;
	}

	return vertexDrawCount;
	}

	VertexDataManager::VertexDataManager(Renderer *renderer) : mRenderer(renderer)
	{
	for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
	{
	mCurrentValue[i].FloatValues[0] = std::numeric_limits<float>::quiet_NaN();
	mCurrentValue[i].FloatValues[1] = std::numeric_limits<float>::quiet_NaN();
	mCurrentValue[i].FloatValues[2] = std::numeric_limits<float>::quiet_NaN();
	mCurrentValue[i].FloatValues[3] = std::numeric_limits<float>::quiet_NaN();
	mCurrentValue[i].Type = GL_FLOAT;
	mCurrentValueBuffer[i] = NULL;
	mCurrentValueOffsets[i] = 0;
	}

	mStreamingBuffer = new StreamingVertexBufferInterface(renderer, INITIAL_STREAM_BUFFER_SIZE);

	if (!mStreamingBuffer)
	{
	ERR("Failed to allocate the streaming vertex buffer.");
	}
	}

	VertexDataManager::~VertexDataManager()
	{
	delete mStreamingBuffer;

	for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
	{
	delete mCurrentValueBuffer[i];
	}
	}

	GLenum VertexDataManager::prepareVertexData(const gl::VertexAttribute attribs[], const gl::VertexAttribCurrentValueData currentValues[],
	gl::ProgramBinary programBinary, GLint start, GLsizei count, TranslatedAttribute translated, GLsizei instances)
	{
	if (!mStreamingBuffer)
	{
	return GL_OUT_OF_MEMORY;
	}

	for (int attributeIndex = 0; attributeIndex < gl::MAX_VERTEX_ATTRIBS; attributeIndex++)
	{
	translated[attributeIndex].active = (programBinary->getSemanticIndex(attributeIndex) != -1);
	}

	// Invalidate static buffers that don't contain matching attributes
	for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
	{
	if (translated[i].active && attribs[i].enabled)
	{
	gl::Buffer *buffer = attribs[i].buffer.get();

	if (buffer)
	{
	BufferD3D *bufferImpl = BufferD3D::makeBufferD3D(buffer->getImplementation());
	StaticVertexBufferInterface *staticBuffer = bufferImpl->getStaticVertexBuffer();

	if (staticBuffer && staticBuffer->getBufferSize() > 0 && !staticBuffer->lookupAttribute(attribs[i], NULL) &&
	!staticBuffer->directStoragePossible(attribs[i], currentValues[i]))
	{
	bufferImpl->invalidateStaticData();
	}
	}
	}
	}

	// Reserve the required space in the buffers
	for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
	{
	if (translated[i].active && attribs[i].enabled)
	{
	gl::Buffer *buffer = attribs[i].buffer.get();
	BufferD3D *bufferImpl = buffer ? BufferD3D::makeBufferD3D(buffer->getImplementation()) : NULL;
	StaticVertexBufferInterface *staticBuffer = bufferImpl ? bufferImpl->getStaticVertexBuffer() : NULL;
	VertexBufferInterface vertexBuffer = staticBuffer ? staticBuffer : static_cast<VertexBufferInterface>(mStreamingBuffer);

	if (!vertexBuffer->directStoragePossible(attribs[i], currentValues[i]))
	{
	if (staticBuffer)
	{
	if (staticBuffer->getBufferSize() == 0)
	{
	int totalCount = ElementsInBuffer(attribs[i], bufferImpl->getSize());
	if (!staticBuffer->reserveVertexSpace(attribs[i], totalCount, 0))
	{
	return GL_OUT_OF_MEMORY;
	}
	}
	}
	else
	{
	int totalCount = StreamingBufferElementCount(attribs[i], count, instances);
	ASSERT(!bufferImpl \|\| ElementsInBuffer(attribs[i], bufferImpl->getSize()) >= totalCount);

	if (!mStreamingBuffer->reserveVertexSpace(attribs[i], totalCount, instances))
	{
	return GL_OUT_OF_MEMORY;
	}
	}
	}
	}
	}

	// Perform the vertex data translations
	for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
	{
	if (translated[i].active)
	{
	GLenum result;

	if (attribs[i].enabled)
	{
	result = storeAttribute(attribs[i], currentValues[i], &translated[i],
	start, count, instances);
	}
	else
	{
	if (!mCurrentValueBuffer[i])
	{
	mCurrentValueBuffer[i] = new StreamingVertexBufferInterface(mRenderer, CONSTANT_VERTEX_BUFFER_SIZE);
	}

	result = storeCurrentValue(attribs[i], currentValues[i], &translated[i],
	&mCurrentValue[i], &mCurrentValueOffsets[i],
	mCurrentValueBuffer[i]);
	}

	if (result != GL_NO_ERROR)
	{
	return result;
	}
	}
	}

	for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
	{
	if (translated[i].active && attribs[i].enabled)
	{
	gl::Buffer *buffer = attribs[i].buffer.get();

	if (buffer)
	{
	BufferD3D *bufferImpl = BufferD3D::makeBufferD3D(buffer->getImplementation());
	bufferImpl->promoteStaticUsage(count * ComputeVertexAttributeTypeSize(attribs[i]));
	}
	}
	}

	return GL_NO_ERROR;
	}

	GLenum VertexDataManager::storeAttribute(const gl::VertexAttribute &attrib,
	const gl::VertexAttribCurrentValueData &currentValue,
	TranslatedAttribute *translated,
	GLint start,
	GLsizei count,
	GLsizei instances)
	{
	gl::Buffer *buffer = attrib.buffer.get();
	ASSERT(buffer \|\| attrib.pointer);

	BufferD3D *storage = buffer ? BufferD3D::makeBufferD3D(buffer->getImplementation()) : NULL;
	StaticVertexBufferInterface *staticBuffer = storage ? storage->getStaticVertexBuffer() : NULL;
	VertexBufferInterface vertexBuffer = staticBuffer ? staticBuffer : static_cast<VertexBufferInterface>(mStreamingBuffer);
	bool directStorage = vertexBuffer->directStoragePossible(attrib, currentValue);

	unsigned int streamOffset = 0;
	unsigned int outputElementSize = 0;

	if (directStorage)
	{
	outputElementSize = ComputeVertexAttributeStride(attrib);
	streamOffset = attrib.offset + outputElementSize * start;
	}
	else if (staticBuffer)
	{
	if (!staticBuffer->getVertexBuffer()->getSpaceRequired(attrib, 1, 0, &outputElementSize))
	{
	return GL_OUT_OF_MEMORY;
	}

	if (!staticBuffer->lookupAttribute(attrib, &streamOffset))
	{
	// Convert the entire buffer
	int totalCount = ElementsInBuffer(attrib, storage->getSize());
	int startIndex = attrib.offset / ComputeVertexAttributeStride(attrib);

	if (!staticBuffer->storeVertexAttributes(attrib, currentValue, -startIndex, totalCount,
	0, &streamOffset))
	{
	return GL_OUT_OF_MEMORY;
	}
	}

	unsigned int firstElementOffset = (attrib.offset / ComputeVertexAttributeStride(attrib)) * outputElementSize;
	unsigned int startOffset = (instances == 0 \|\| attrib.divisor == 0) ? start * outputElementSize : 0;
	if (streamOffset + firstElementOffset + startOffset < streamOffset)
	{
	return GL_OUT_OF_MEMORY;
	}

	streamOffset += firstElementOffset + startOffset;
	}
	else
	{
	int totalCount = StreamingBufferElementCount(attrib, count, instances);
	if (!mStreamingBuffer->getVertexBuffer()->getSpaceRequired(attrib, 1, 0, &outputElementSize) \|\|
	!mStreamingBuffer->storeVertexAttributes(attrib, currentValue, start, totalCount, instances,
	&streamOffset))
	{
	return GL_OUT_OF_MEMORY;
	}
	}

	translated->storage = directStorage ? storage : NULL;
	translated->vertexBuffer = vertexBuffer->getVertexBuffer();
	translated->serial = directStorage ? storage->getSerial() : vertexBuffer->getSerial();
	translated->divisor = attrib.divisor;

	translated->attribute = &attrib;
	translated->currentValueType = currentValue.Type;
	translated->stride = outputElementSize;
	translated->offset = streamOffset;

	return GL_NO_ERROR;
	}

	GLenum VertexDataManager::storeCurrentValue(const gl::VertexAttribute &attrib,
	const gl::VertexAttribCurrentValueData &currentValue,
	TranslatedAttribute *translated,
	gl::VertexAttribCurrentValueData *cachedValue,
	size_t *cachedOffset,
	StreamingVertexBufferInterface *buffer)
	{
	if (*cachedValue != currentValue)
	{
	if (!buffer->reserveVertexSpace(attrib, 1, 0))
	{
	return GL_OUT_OF_MEMORY;
	}

	unsigned int streamOffset;
	if (!buffer->storeVertexAttributes(attrib, currentValue, 0, 1, 0, &streamOffset))
	{
	return GL_OUT_OF_MEMORY;
	}

	*cachedValue = currentValue;
	*cachedOffset = streamOffset;
	}

	translated->storage = NULL;
	translated->vertexBuffer = buffer->getVertexBuffer();
	translated->serial = buffer->getSerial();
	translated->divisor = 0;

	translated->attribute = &attrib;
	translated->currentValueType = currentValue.Type;
	translated->stride = 0;
	translated->offset = *cachedOffset;

	return GL_NO_ERROR;
	}

	}