The Tor Browser: comparison gfx/angle/src/libGLESv2/renderer/VertexDataManager.cpp

--1:000000000000
+:8b8a15832bd4
+#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/VertexDataManager.h"
+#include "libGLESv2/renderer/BufferStorage.h"
+#include "libGLESv2/Buffer.h"
+#include "libGLESv2/ProgramBinary.h"
+#include "libGLESv2/Context.h"
+#include "libGLESv2/renderer/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 &attribute, 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 = attribute.stride();
+return (size - attribute.mOffset % stride + (stride - attribute.typeSize())) / stride;
+}
+VertexDataManager::VertexDataManager(Renderer *renderer) : mRenderer(renderer)
+{
+for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
+{
+mCurrentValue[i][0] = std::numeric_limits<float>::quiet_NaN();
+mCurrentValue[i][1] = std::numeric_limits<float>::quiet_NaN();
+mCurrentValue[i][2] = std::numeric_limits<float>::quiet_NaN();
+mCurrentValue[i][3] = std::numeric_limits<float>::quiet_NaN();
+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];
+}
+}
+static bool directStoragePossible(VertexBufferInterface* vb, const gl::VertexAttribute& attrib)
+{
+gl::Buffer *buffer = attrib.mBoundBuffer.get();
+BufferStorage *storage = buffer ? buffer->getStorage() : NULL;
+const bool isAligned = (attrib.stride() % 4 == 0) && (attrib.mOffset % 4 == 0);
+return storage && storage->supportsDirectBinding() && !vb->getVertexBuffer()->requiresConversion(attrib) && isAligned;
+}
+GLenum VertexDataManager::prepareVertexData(const gl::VertexAttribute attribs[], 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].mArrayEnabled)
+{
+gl::Buffer *buffer = attribs[i].mBoundBuffer.get();
+StaticVertexBufferInterface *staticBuffer = buffer ? buffer->getStaticVertexBuffer() : NULL;
+if (staticBuffer && staticBuffer->getBufferSize() > 0 && !staticBuffer->lookupAttribute(attribs[i], NULL) &&
+!directStoragePossible(staticBuffer, attribs[i]))
+{
+buffer->invalidateStaticData();
+}
+}
+}
+// Reserve the required space in the buffers
+for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
+{
+if (translated[i].active && attribs[i].mArrayEnabled)
+{
+gl::Buffer *buffer = attribs[i].mBoundBuffer.get();
+StaticVertexBufferInterface *staticBuffer = buffer ? buffer->getStaticVertexBuffer() : NULL;
+VertexBufferInterface *vertexBuffer = staticBuffer ? staticBuffer : static_cast<VertexBufferInterface*>(mStreamingBuffer);
+if (!directStoragePossible(vertexBuffer, attribs[i]))
+{
+if (staticBuffer)
+{
+if (staticBuffer->getBufferSize() == 0)
+{
+int totalCount = elementsInBuffer(attribs[i], buffer->size());
+if (!staticBuffer->reserveVertexSpace(attribs[i], totalCount, 0))
+{
+return GL_OUT_OF_MEMORY;
+}
+}
+}
+else
+{
+if (!mStreamingBuffer->reserveVertexSpace(attribs[i], count, 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].mArrayEnabled)
+{
+gl::Buffer *buffer = attribs[i].mBoundBuffer.get();
+if (!buffer && attribs[i].mPointer == 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;
+}
+StaticVertexBufferInterface *staticBuffer = buffer ? buffer->getStaticVertexBuffer() : NULL;
+VertexBufferInterface *vertexBuffer = staticBuffer ? staticBuffer : static_cast<VertexBufferInterface*>(mStreamingBuffer);
+BufferStorage *storage = buffer ? buffer->getStorage() : NULL;
+bool directStorage = directStoragePossible(vertexBuffer, attribs[i]);
+unsigned int streamOffset = 0;
+unsigned int outputElementSize = 0;
+if (directStorage)
+{
+outputElementSize = attribs[i].stride();
+streamOffset = attribs[i].mOffset + outputElementSize * start;
+storage->markBufferUsage();
+}
+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].mOffset / attribs[i].stride();
+if (!staticBuffer->storeVertexAttributes(attribs[i], -startIndex, totalCount, 0, &streamOffset))
+{
+return GL_OUT_OF_MEMORY;
+}
+}
+unsigned int firstElementOffset = (attribs[i].mOffset / attribs[i].stride()) * outputElementSize;
+unsigned int startOffset = (instances == 0 || attribs[i].mDivisor == 0) ? start * outputElementSize : 0;
+if (streamOffset + firstElementOffset + startOffset < streamOffset)
+{
+return GL_OUT_OF_MEMORY;
+}
+streamOffset += firstElementOffset + startOffset;
+}
+else
+{
+if (!mStreamingBuffer->getVertexBuffer()->getSpaceRequired(attribs[i], 1, 0, &outputElementSize) ||
+!mStreamingBuffer->storeVertexAttributes(attribs[i], start, count, 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].mDivisor;
+translated[i].attribute = &attribs[i];
+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][0] != attribs[i].mCurrentValue[0] ||
+mCurrentValue[i][1] != attribs[i].mCurrentValue[1] ||
+mCurrentValue[i][2] != attribs[i].mCurrentValue[2] ||
+mCurrentValue[i][3] != attribs[i].mCurrentValue[3])
+{
+unsigned int requiredSpace = sizeof(float) * 4;
+if (!buffer->reserveRawDataSpace(requiredSpace))
+{
+return GL_OUT_OF_MEMORY;
+}
+unsigned int streamOffset;
+if (!buffer->storeRawData(attribs[i].mCurrentValue, requiredSpace, &streamOffset))
+{
+return GL_OUT_OF_MEMORY;
+}
+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].stride = 0;
+translated[i].offset = mCurrentValueOffsets[i];
+}
+}
+}
+for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
+{
+if (translated[i].active && attribs[i].mArrayEnabled)
+{
+gl::Buffer *buffer = attribs[i].mBoundBuffer.get();
+if (buffer)
+{
+buffer->promoteStaticUsage(count * attribs[i].typeSize());
+}
+}
+}
+return GL_NO_ERROR;
+}
+}

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comparison: gfx/angle/src/libGLESv2/renderer/VertexDataManager.cpp

gfx/angle/src/libGLESv2/renderer/VertexDataManager.cpp