diff options
Diffstat (limited to 'src/3rdparty/angle/src/libANGLE/renderer/d3d/VertexDataManager.cpp')
-rw-r--r-- | src/3rdparty/angle/src/libANGLE/renderer/d3d/VertexDataManager.cpp | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libANGLE/renderer/d3d/VertexDataManager.cpp b/src/3rdparty/angle/src/libANGLE/renderer/d3d/VertexDataManager.cpp new file mode 100644 index 0000000000..cb70b9e4ef --- /dev/null +++ b/src/3rdparty/angle/src/libANGLE/renderer/d3d/VertexDataManager.cpp @@ -0,0 +1,396 @@ +// +// 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 "libANGLE/renderer/d3d/VertexDataManager.h" + +#include "libANGLE/Buffer.h" +#include "libANGLE/Program.h" +#include "libANGLE/State.h" +#include "libANGLE/VertexAttribute.h" +#include "libANGLE/VertexArray.h" +#include "libANGLE/renderer/d3d/BufferD3D.h" +#include "libANGLE/renderer/d3d/VertexBuffer.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) + { + // When instanceDrawCount is not a multiple attrib.divisor, the division must round up. + // For instance, with 5 non-instanced vertices and a divisor equal to 3, we need 2 instanced vertices. + return (instanceDrawCount + attrib.divisor - 1) / attrib.divisor; + } + + return vertexDrawCount; +} + +VertexDataManager::VertexDataManager(BufferFactoryD3D *factory) + : mFactory(factory) +{ + 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(factory, 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]; + } +} + +void VertexDataManager::hintUnmapAllResources(const std::vector<gl::VertexAttribute> &vertexAttributes) +{ + mStreamingBuffer->getVertexBuffer()->hintUnmapResource(); + + for (size_t i = 0; i < vertexAttributes.size(); i++) + { + const gl::VertexAttribute &attrib = vertexAttributes[i]; + if (attrib.enabled) + { + gl::Buffer *buffer = attrib.buffer.get(); + BufferD3D *storage = buffer ? GetImplAs<BufferD3D>(buffer) : NULL; + StaticVertexBufferInterface *staticBuffer = storage ? storage->getStaticVertexBuffer() : NULL; + + if (staticBuffer) + { + staticBuffer->getVertexBuffer()->hintUnmapResource(); + } + } + } + + for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++) + { + if (mCurrentValueBuffer[i] != NULL) + { + mCurrentValueBuffer[i]->getVertexBuffer()->hintUnmapResource(); + } + } +} + +gl::Error VertexDataManager::prepareVertexData(const gl::State &state, GLint start, GLsizei count, + TranslatedAttribute *translated, GLsizei instances) +{ + if (!mStreamingBuffer) + { + return gl::Error(GL_OUT_OF_MEMORY, "Internal streaming vertex buffer is unexpectedly NULL."); + } + + const gl::VertexArray *vertexArray = state.getVertexArray(); + const std::vector<gl::VertexAttribute> &vertexAttributes = vertexArray->getVertexAttributes(); + + // Invalidate static buffers that don't contain matching attributes + for (int attributeIndex = 0; attributeIndex < gl::MAX_VERTEX_ATTRIBS; attributeIndex++) + { + translated[attributeIndex].active = (state.getProgram()->getSemanticIndex(attributeIndex) != -1); + if (translated[attributeIndex].active && vertexAttributes[attributeIndex].enabled) + { + invalidateMatchingStaticData(vertexAttributes[attributeIndex], state.getVertexAttribCurrentValue(attributeIndex)); + } + } + + // Reserve the required space in the buffers + for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++) + { + if (translated[i].active && vertexAttributes[i].enabled) + { + gl::Error error = reserveSpaceForAttrib(vertexAttributes[i], state.getVertexAttribCurrentValue(i), count, instances); + if (error.isError()) + { + return error; + } + } + } + + // Perform the vertex data translations + for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++) + { + const gl::VertexAttribute &curAttrib = vertexAttributes[i]; + if (translated[i].active) + { + if (curAttrib.enabled) + { + gl::Error error = storeAttribute(curAttrib, state.getVertexAttribCurrentValue(i), + &translated[i], start, count, instances); + + if (error.isError()) + { + hintUnmapAllResources(vertexAttributes); + return error; + } + } + else + { + if (!mCurrentValueBuffer[i]) + { + mCurrentValueBuffer[i] = new StreamingVertexBufferInterface(mFactory, CONSTANT_VERTEX_BUFFER_SIZE); + } + + gl::Error error = storeCurrentValue(curAttrib, state.getVertexAttribCurrentValue(i), &translated[i], + &mCurrentValue[i], &mCurrentValueOffsets[i], + mCurrentValueBuffer[i]); + if (error.isError()) + { + hintUnmapAllResources(vertexAttributes); + return error; + } + } + } + } + + // Hint to unmap all the resources + hintUnmapAllResources(vertexAttributes); + + for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++) + { + const gl::VertexAttribute &curAttrib = vertexAttributes[i]; + if (translated[i].active && curAttrib.enabled) + { + gl::Buffer *buffer = curAttrib.buffer.get(); + + if (buffer) + { + BufferD3D *bufferImpl = GetImplAs<BufferD3D>(buffer); + bufferImpl->promoteStaticUsage(count * ComputeVertexAttributeTypeSize(curAttrib)); + } + } + } + + return gl::Error(GL_NO_ERROR); +} + +void VertexDataManager::invalidateMatchingStaticData(const gl::VertexAttribute &attrib, + const gl::VertexAttribCurrentValueData ¤tValue) const +{ + gl::Buffer *buffer = attrib.buffer.get(); + + if (buffer) + { + BufferD3D *bufferImpl = GetImplAs<BufferD3D>(buffer); + StaticVertexBufferInterface *staticBuffer = bufferImpl->getStaticVertexBuffer(); + + if (staticBuffer && + staticBuffer->getBufferSize() > 0 && + !staticBuffer->lookupAttribute(attrib, NULL) && + !staticBuffer->directStoragePossible(attrib, currentValue)) + { + bufferImpl->invalidateStaticData(); + } + } +} + +gl::Error VertexDataManager::reserveSpaceForAttrib(const gl::VertexAttribute &attrib, + const gl::VertexAttribCurrentValueData ¤tValue, + GLsizei count, + GLsizei instances) const +{ + gl::Buffer *buffer = attrib.buffer.get(); + BufferD3D *bufferImpl = buffer ? GetImplAs<BufferD3D>(buffer) : NULL; + StaticVertexBufferInterface *staticBuffer = bufferImpl ? bufferImpl->getStaticVertexBuffer() : NULL; + VertexBufferInterface *vertexBuffer = staticBuffer ? staticBuffer : static_cast<VertexBufferInterface*>(mStreamingBuffer); + + if (!vertexBuffer->directStoragePossible(attrib, currentValue)) + { + if (staticBuffer) + { + if (staticBuffer->getBufferSize() == 0) + { + int totalCount = ElementsInBuffer(attrib, bufferImpl->getSize()); + gl::Error error = staticBuffer->reserveVertexSpace(attrib, totalCount, 0); + if (error.isError()) + { + return error; + } + } + } + else + { + int totalCount = StreamingBufferElementCount(attrib, count, instances); + ASSERT(!bufferImpl || ElementsInBuffer(attrib, bufferImpl->getSize()) >= totalCount); + + gl::Error error = mStreamingBuffer->reserveVertexSpace(attrib, totalCount, instances); + if (error.isError()) + { + return error; + } + } + } + + return gl::Error(GL_NO_ERROR); +} + +gl::Error VertexDataManager::storeAttribute(const gl::VertexAttribute &attrib, + const gl::VertexAttribCurrentValueData ¤tValue, + TranslatedAttribute *translated, + GLint start, + GLsizei count, + GLsizei instances) +{ + gl::Buffer *buffer = attrib.buffer.get(); + ASSERT(buffer || attrib.pointer); + + BufferD3D *storage = buffer ? GetImplAs<BufferD3D>(buffer) : 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; + + // Instanced vertices do not apply the 'start' offset + GLint firstVertexIndex = (instances > 0 && attrib.divisor > 0 ? 0 : start); + + if (directStorage) + { + outputElementSize = ComputeVertexAttributeStride(attrib); + streamOffset = attrib.offset + outputElementSize * firstVertexIndex; + } + else if (staticBuffer) + { + gl::Error error = staticBuffer->getVertexBuffer()->getSpaceRequired(attrib, 1, 0, &outputElementSize); + if (error.isError()) + { + return error; + } + + if (!staticBuffer->lookupAttribute(attrib, &streamOffset)) + { + // Convert the entire buffer + int totalCount = ElementsInBuffer(attrib, storage->getSize()); + int startIndex = attrib.offset / ComputeVertexAttributeStride(attrib); + + error = staticBuffer->storeVertexAttributes(attrib, currentValue, -startIndex, totalCount, + 0, &streamOffset); + if (error.isError()) + { + return error; + } + } + + unsigned int firstElementOffset = (attrib.offset / ComputeVertexAttributeStride(attrib)) * outputElementSize; + unsigned int startOffset = (instances == 0 || attrib.divisor == 0) ? firstVertexIndex * outputElementSize : 0; + if (streamOffset + firstElementOffset + startOffset < streamOffset) + { + return gl::Error(GL_OUT_OF_MEMORY); + } + + streamOffset += firstElementOffset + startOffset; + } + else + { + int totalCount = StreamingBufferElementCount(attrib, count, instances); + gl::Error error = mStreamingBuffer->getVertexBuffer()->getSpaceRequired(attrib, 1, 0, &outputElementSize); + if (error.isError()) + { + return error; + } + + error = mStreamingBuffer->storeVertexAttributes(attrib, currentValue, firstVertexIndex, + totalCount, instances, &streamOffset); + if (error.isError()) + { + return error; + } + } + + 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::Error(GL_NO_ERROR); +} + +gl::Error VertexDataManager::storeCurrentValue(const gl::VertexAttribute &attrib, + const gl::VertexAttribCurrentValueData ¤tValue, + TranslatedAttribute *translated, + gl::VertexAttribCurrentValueData *cachedValue, + size_t *cachedOffset, + StreamingVertexBufferInterface *buffer) +{ + if (*cachedValue != currentValue) + { + gl::Error error = buffer->reserveVertexSpace(attrib, 1, 0); + if (error.isError()) + { + return error; + } + + unsigned int streamOffset; + error = buffer->storeVertexAttributes(attrib, currentValue, 0, 1, 0, &streamOffset); + if (error.isError()) + { + return error; + } + + *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::Error(GL_NO_ERROR); +} + +} |