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Diffstat (limited to 'src/3rdparty/angle/src/libGLESv2/renderer/d3d/VertexDataManager.cpp')
| -rw-r--r-- | src/3rdparty/angle/src/libGLESv2/renderer/d3d/VertexDataManager.cpp | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libGLESv2/renderer/d3d/VertexDataManager.cpp b/src/3rdparty/angle/src/libGLESv2/renderer/d3d/VertexDataManager.cpp new file mode 100644 index 0000000000..fc2b8ff0df --- /dev/null +++ b/src/3rdparty/angle/src/libGLESv2/renderer/d3d/VertexDataManager.cpp @@ -0,0 +1,299 @@ +#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); + + // [OpenGL ES 3.0.2] section 2.9.4 page 40: + // We can return INVALID_OPERATION if our vertex attribute does not have enough backing data. + if (bufferImpl && ElementsInBuffer(attribs[i], bufferImpl->getSize()) < totalCount) + { + return GL_INVALID_OPERATION; + } + + 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) + { + if (attribs[i].enabled) + { + gl::Buffer *buffer = attribs[i].buffer.get(); + + if (!buffer && attribs[i].pointer == NULL) + { + // This is an application error that would normally result in a crash, but we catch it and return an error + ERR("An enabled vertex array has no buffer and no pointer."); + return GL_INVALID_OPERATION; + } + + 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(attribs[i], currentValues[i]); + + unsigned int streamOffset = 0; + unsigned int outputElementSize = 0; + + if (directStorage) + { + outputElementSize = ComputeVertexAttributeStride(attribs[i]); + streamOffset = attribs[i].offset + outputElementSize * start; + } + else if (staticBuffer) + { + if (!staticBuffer->getVertexBuffer()->getSpaceRequired(attribs[i], 1, 0, &outputElementSize)) + { + return GL_OUT_OF_MEMORY; + } + + if (!staticBuffer->lookupAttribute(attribs[i], &streamOffset)) + { + // Convert the entire buffer + int totalCount = ElementsInBuffer(attribs[i], storage->getSize()); + int startIndex = attribs[i].offset / ComputeVertexAttributeStride(attribs[i]); + + if (!staticBuffer->storeVertexAttributes(attribs[i], currentValues[i], -startIndex, totalCount, + 0, &streamOffset)) + { + return GL_OUT_OF_MEMORY; + } + } + + unsigned int firstElementOffset = (attribs[i].offset / ComputeVertexAttributeStride(attribs[i])) * outputElementSize; + unsigned int startOffset = (instances == 0 || attribs[i].divisor == 0) ? start * outputElementSize : 0; + if (streamOffset + firstElementOffset + startOffset < streamOffset) + { + return GL_OUT_OF_MEMORY; + } + + streamOffset += firstElementOffset + startOffset; + } + else + { + int totalCount = StreamingBufferElementCount(attribs[i], count, instances); + if (!mStreamingBuffer->getVertexBuffer()->getSpaceRequired(attribs[i], 1, 0, &outputElementSize) || + !mStreamingBuffer->storeVertexAttributes(attribs[i], currentValues[i], start, totalCount, instances, + &streamOffset)) + { + return GL_OUT_OF_MEMORY; + } + } + + translated[i].storage = directStorage ? storage : NULL; + translated[i].vertexBuffer = vertexBuffer->getVertexBuffer(); + translated[i].serial = directStorage ? storage->getSerial() : vertexBuffer->getSerial(); + translated[i].divisor = attribs[i].divisor; + + translated[i].attribute = &attribs[i]; + translated[i].currentValueType = currentValues[i].Type; + translated[i].stride = outputElementSize; + translated[i].offset = streamOffset; + } + else + { + if (!mCurrentValueBuffer[i]) + { + mCurrentValueBuffer[i] = new StreamingVertexBufferInterface(mRenderer, CONSTANT_VERTEX_BUFFER_SIZE); + } + + StreamingVertexBufferInterface *buffer = mCurrentValueBuffer[i]; + + if (mCurrentValue[i] != currentValues[i]) + { + if (!buffer->reserveVertexSpace(attribs[i], 1, 0)) + { + return GL_OUT_OF_MEMORY; + } + + unsigned int streamOffset; + if (!buffer->storeVertexAttributes(attribs[i], currentValues[i], 0, 1, 0, &streamOffset)) + { + return GL_OUT_OF_MEMORY; + } + + mCurrentValue[i] = currentValues[i]; + mCurrentValueOffsets[i] = streamOffset; + } + + translated[i].storage = NULL; + translated[i].vertexBuffer = mCurrentValueBuffer[i]->getVertexBuffer(); + translated[i].serial = mCurrentValueBuffer[i]->getSerial(); + translated[i].divisor = 0; + + translated[i].attribute = &attribs[i]; + translated[i].currentValueType = currentValues[i].Type; + translated[i].stride = 0; + translated[i].offset = mCurrentValueOffsets[i]; + } + } + } + + 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; +} + +} |