void VertexDataManager::hintUnmapAllResources(const std::vector<gl::VertexAttribute> &vertexAttributes)
{
mStreamingBuffer->getVertexBuffer()->hintUnmapResource();
for (const TranslatedAttribute *translated : mActiveEnabledAttributes)
{
gl::Buffer *buffer = translated->attribute->buffer.get();
BufferD3D *storage = buffer ? GetImplAs<BufferD3D>(buffer) : nullptr;
StaticVertexBufferInterface *staticBuffer =
storage ? storage->getStaticVertexBuffer(*translated->attribute) : nullptr;
if (staticBuffer)
{
staticBuffer->getVertexBuffer()->hintUnmapResource();
}
}
for (auto ¤tValue : mCurrentValueCache)
{
if (currentValue.buffer != nullptr)
{
currentValue.buffer->getVertexBuffer()->hintUnmapResource();
}
}
}
StaticVertexBufferInterface *BufferD3D::getStaticVertexBuffer(const gl::VertexAttribute &attribute,
const gl::VertexBinding &binding)
{
if (mStaticVertexBuffers.empty())
{
// Early out if there aren't any static buffers at all
return nullptr;
}
// Early out, the attribute can be added to mStaticVertexBuffer.
if (mStaticVertexBuffers.size() == 1 && mStaticVertexBuffers[0]->empty())
{
return mStaticVertexBuffers[0].get();
}
// Cache size limiting: track the total allocated buffer sizes.
size_t currentTotalSize = 0;
// At this point, see if any of the existing static buffers contains the attribute data
// If there is a cached static buffer that already contains the attribute, then return it
for (const auto &staticBuffer : mStaticVertexBuffers)
{
if (staticBuffer->matchesAttribute(attribute, binding))
{
return staticBuffer.get();
}
currentTotalSize += staticBuffer->getBufferSize();
}
// Cache size limiting: Clean-up threshold is four times the base buffer size, with a minimum.
ASSERT(getSize() < std::numeric_limits<size_t>::max() / 4u);
size_t sizeThreshold = std::max(getSize() * 4u, static_cast<size_t>(0x1000u));
// If we're past the threshold, clear the buffer cache. Note that this will release buffers
// that are currenly bound, and in an edge case can even translate the same attribute twice
// in the same draw call. It will not delete currently bound buffers, however, because they
// are ref counted.
if (currentTotalSize > sizeThreshold)
{
emptyStaticBufferCache();
}
// At this point, we must create a new static buffer for the attribute data.
StaticVertexBufferInterface *newStaticBuffer = new StaticVertexBufferInterface(mFactory);
newStaticBuffer->setAttribute(attribute, binding);
mStaticVertexBuffers.push_back(std::unique_ptr<StaticVertexBufferInterface>(newStaticBuffer));
return newStaticBuffer;
}
gl::Error VertexDataManager::reserveSpaceForAttrib(const TranslatedAttribute &translatedAttrib,
GLsizei count,
GLsizei instances) const
{
const gl::VertexAttribute &attrib = *translatedAttrib.attribute;
gl::Buffer *buffer = attrib.buffer.get();
BufferD3D *bufferImpl = buffer ? GetImplAs<BufferD3D>(buffer) : NULL;
StaticVertexBufferInterface *staticBuffer =
bufferImpl ? bufferImpl->getStaticVertexBuffer(attrib) : NULL;
VertexBufferInterface *vertexBuffer = staticBuffer ? staticBuffer : static_cast<VertexBufferInterface*>(mStreamingBuffer);
if (!vertexBuffer->directStoragePossible(attrib, translatedAttrib.currentValueType))
{
if (staticBuffer)
{
if (staticBuffer->getBufferSize() == 0)
{
int totalCount =
ElementsInBuffer(attrib, static_cast<unsigned int>(bufferImpl->getSize()));
gl::Error error = staticBuffer->reserveVertexSpace(attrib, totalCount, 0);
if (error.isError())
{
return error;
}
}
}
else
{
size_t totalCount = ComputeVertexAttributeElementCount(attrib, count, instances);
ASSERT(!bufferImpl ||
ElementsInBuffer(attrib, static_cast<unsigned int>(bufferImpl->getSize())) >=
static_cast<int>(totalCount));
gl::Error error = mStreamingBuffer->reserveVertexSpace(
attrib, static_cast<GLsizei>(totalCount), instances);
if (error.isError())
{
return error;
}
}
}
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 = BufferD3D::makeBufferD3D(buffer->getImplementation());
StaticVertexBufferInterface *staticBuffer = bufferImpl->getStaticVertexBuffer();
if (staticBuffer &&
staticBuffer->getBufferSize() > 0 &&
!staticBuffer->lookupAttribute(attrib, NULL) &&
!staticBuffer->directStoragePossible(attrib, currentValue))
{
bufferImpl->invalidateStaticData();
}
}
}
void VertexDataManager::prepareStaticBufferForAttribute(const gl::VertexAttribute &attrib,
const gl::VertexAttribCurrentValueData ¤tValue) const
{
gl::Buffer *buffer = attrib.buffer.get();
if (buffer)
{
BufferD3D *bufferImpl = GetImplAs<BufferD3D>(buffer);
// This will create the static buffer in the right circumstances
StaticVertexBufferInterface *staticBuffer = bufferImpl->getStaticVertexBufferForAttribute(attrib);
UNUSED_ASSERTION_VARIABLE(staticBuffer);
// This check validates that a valid static vertex buffer was returned above
ASSERT(!(staticBuffer &&
staticBuffer->getBufferSize() > 0 &&
!staticBuffer->lookupAttribute(attrib, NULL) &&
!staticBuffer->directStoragePossible(attrib, currentValue)));
}
}
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 ? BufferD3D::makeBufferD3D(buffer->getImplementation()) : 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(TranslatedAttribute *translated,
GLint start,
GLsizei count,
GLsizei instances)
{
const gl::VertexAttribute &attrib = *translated->attribute;
gl::Buffer *buffer = attrib.buffer.get();
ASSERT(buffer || attrib.pointer);
ASSERT(attrib.enabled);
BufferD3D *storage = buffer ? GetImplAs<BufferD3D>(buffer) : NULL;
StaticVertexBufferInterface *staticBuffer =
storage ? storage->getStaticVertexBuffer(attrib) : NULL;
VertexBufferInterface *vertexBuffer = staticBuffer ? staticBuffer : static_cast<VertexBufferInterface*>(mStreamingBuffer);
bool directStorage = vertexBuffer->directStoragePossible(attrib, translated->currentValueType);
// Instanced vertices do not apply the 'start' offset
GLint firstVertexIndex = (instances > 0 && attrib.divisor > 0 ? 0 : start);
translated->vertexBuffer = vertexBuffer->getVertexBuffer();
if (directStorage)
{
translated->storage = storage;
translated->serial = storage->getSerial();
translated->stride = static_cast<unsigned int>(ComputeVertexAttributeStride(attrib));
translated->offset = static_cast<unsigned int>(attrib.offset + translated->stride * firstVertexIndex);
return gl::Error(GL_NO_ERROR);
}
// Compute source data pointer
const uint8_t *sourceData = nullptr;
if (buffer)
{
gl::Error error = storage->getData(&sourceData);
if (error.isError())
{
return error;
}
sourceData += static_cast<int>(attrib.offset);
}
else
{
sourceData = static_cast<const uint8_t*>(attrib.pointer);
}
unsigned int streamOffset = 0;
unsigned int outputElementSize = 0;
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, static_cast<unsigned int>(storage->getSize()));
int startIndex = static_cast<int>(attrib.offset) /
static_cast<int>(ComputeVertexAttributeStride(attrib));
error = staticBuffer->storeVertexAttributes(attrib,
translated->currentValueType,
-startIndex,
totalCount,
0,
&streamOffset,
sourceData);
if (error.isError())
{
return error;
}
}
unsigned int firstElementOffset =
(static_cast<unsigned int>(attrib.offset) /
static_cast<unsigned int>(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
{
size_t totalCount = ComputeVertexAttributeElementCount(attrib, count, instances);
gl::Error error = mStreamingBuffer->getVertexBuffer()->getSpaceRequired(attrib, 1, 0, &outputElementSize);
if (error.isError())
{
return error;
}
error = mStreamingBuffer->storeVertexAttributes(
attrib, translated->currentValueType, firstVertexIndex,
static_cast<GLsizei>(totalCount), instances, &streamOffset, sourceData);
if (error.isError())
{
return error;
}
}
translated->storage = nullptr;
translated->serial = vertexBuffer->getSerial();
translated->stride = outputElementSize;
translated->offset = streamOffset;
return gl::Error(GL_NO_ERROR);
}
gl::Error VertexDataManager::prepareVertexData(const gl::State &state,
GLint start,
GLsizei count,
std::vector<TranslatedAttribute> *translatedAttribs,
GLsizei instances)
{
if (!mStreamingBuffer)
{
return gl::Error(GL_OUT_OF_MEMORY, "Internal streaming vertex buffer is unexpectedly NULL.");
}
// Compute active enabled and active disable attributes, for speed.
// TODO(jmadill): don't recompute if there was no state change
const gl::VertexArray *vertexArray = state.getVertexArray();
const gl::Program *program = state.getProgram();
const auto &vertexAttributes = vertexArray->getVertexAttributes();
mActiveEnabledAttributes.clear();
mActiveDisabledAttributes.clear();
translatedAttribs->clear();
for (size_t attribIndex = 0; attribIndex < vertexAttributes.size(); ++attribIndex)
{
if (program->isAttribLocationActive(attribIndex))
{
// Resize automatically puts in empty attribs
translatedAttribs->resize(attribIndex + 1);
TranslatedAttribute *translated = &(*translatedAttribs)[attribIndex];
// Record the attribute now
translated->active = true;
translated->attribute = &vertexAttributes[attribIndex];
translated->currentValueType =
state.getVertexAttribCurrentValue(static_cast<unsigned int>(attribIndex)).Type;
translated->divisor = vertexAttributes[attribIndex].divisor;
if (vertexAttributes[attribIndex].enabled)
{
mActiveEnabledAttributes.push_back(translated);
}
else
{
mActiveDisabledAttributes.push_back(attribIndex);
}
}
}
// Reserve the required space in the buffers
for (const TranslatedAttribute *activeAttrib : mActiveEnabledAttributes)
{
gl::Error error = reserveSpaceForAttrib(*activeAttrib, count, instances);
if (error.isError())
{
return error;
}
}
// Perform the vertex data translations
for (TranslatedAttribute *activeAttrib : mActiveEnabledAttributes)
{
gl::Error error = storeAttribute(activeAttrib, start, count, instances);
if (error.isError())
{
hintUnmapAllResources(vertexAttributes);
return error;
}
}
for (size_t attribIndex : mActiveDisabledAttributes)
{
if (mCurrentValueCache[attribIndex].buffer == nullptr)
{
mCurrentValueCache[attribIndex].buffer = new StreamingVertexBufferInterface(mFactory, CONSTANT_VERTEX_BUFFER_SIZE);
}
gl::Error error = storeCurrentValue(
state.getVertexAttribCurrentValue(static_cast<unsigned int>(attribIndex)),
&(*translatedAttribs)[attribIndex], &mCurrentValueCache[attribIndex]);
if (error.isError())
{
hintUnmapAllResources(vertexAttributes);
return error;
}
}
// Commit all the static vertex buffers. This fixes them in size/contents, and forces ANGLE
// to use a new static buffer (or recreate the static buffers) next time
for (size_t attribIndex = 0; attribIndex < vertexAttributes.size(); ++attribIndex)
{
const gl::VertexAttribute &attrib = vertexAttributes[attribIndex];
gl::Buffer *buffer = attrib.buffer.get();
BufferD3D *storage = buffer ? GetImplAs<BufferD3D>(buffer) : nullptr;
StaticVertexBufferInterface *staticBuffer =
storage ? storage->getStaticVertexBuffer(attrib) : nullptr;
if (staticBuffer)
{
staticBuffer->commit();
}
}
// Hint to unmap all the resources
hintUnmapAllResources(vertexAttributes);
for (const TranslatedAttribute *activeAttrib : mActiveEnabledAttributes)
{
gl::Buffer *buffer = activeAttrib->attribute->buffer.get();
if (buffer)
{
BufferD3D *bufferD3D = GetImplAs<BufferD3D>(buffer);
size_t typeSize = ComputeVertexAttributeTypeSize(*activeAttrib->attribute);
bufferD3D->promoteStaticUsage(count * static_cast<int>(typeSize));
}
}
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 ? 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)
{
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);
gl::Error 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) ? start * 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, start, 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);
}
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]) == -1 &&
!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]);
std::size_t streamOffset = -1;
unsigned int outputElementSize = 0;
if (directStorage)
{
outputElementSize = attribs[i].stride();
streamOffset = attribs[i].mOffset + outputElementSize * start;
storage->markBufferUsage();
}
else if (staticBuffer)
{
streamOffset = staticBuffer->lookupAttribute(attribs[i]);
outputElementSize = staticBuffer->getVertexBuffer()->getSpaceRequired(attribs[i], 1, 0);
if (streamOffset == -1)
{
// Convert the entire buffer
int totalCount = elementsInBuffer(attribs[i], storage->getSize());
int startIndex = attribs[i].mOffset / attribs[i].stride();
streamOffset = staticBuffer->storeVertexAttributes(attribs[i], -startIndex, totalCount, 0);
}
if (streamOffset != -1)
{
streamOffset += (attribs[i].mOffset / attribs[i].stride()) * outputElementSize;
if (instances == 0 || attribs[i].mDivisor == 0)
{
streamOffset += start * outputElementSize;
}
}
}
else
{
outputElementSize = mStreamingBuffer->getVertexBuffer()->getSpaceRequired(attribs[i], 1, 0);
streamOffset = mStreamingBuffer->storeVertexAttributes(attribs[i], start, count, instances);
}
if (streamOffset == -1)
{
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;
}
int streamOffset = buffer->storeRawData(attribs[i].mCurrentValue, requiredSpace);
if (streamOffset == -1)
{
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;
}
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->getStaticVertexBufferForAttribute(attrib) : 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 = static_cast<unsigned int>(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);
// Each staticBuffer only contains the data for one attribute, so we know that it won't be modified again.
// We can therefore safely unmap it here without hurting perf.
staticBuffer->getVertexBuffer()->hintUnmapResource();
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);
}
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].mArrayEnabled)
{
gl::Buffer *buffer = attribs[i].mBoundBuffer.get();
StaticVertexBufferInterface *staticBuffer = buffer ? buffer->getStaticVertexBuffer() : NULL;
if (staticBuffer && staticBuffer->getBufferSize() > 0 && !staticBuffer->lookupAttribute(attribs[i], NULL) &&
!staticBuffer->directStoragePossible(attribs[i], currentValues[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 (!vertexBuffer->directStoragePossible(attribs[i], currentValues[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
{
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 (buffer && ElementsInBuffer(attribs[i], buffer->size()) < 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].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 = vertexBuffer->directStoragePossible(attribs[i], currentValues[i]);
unsigned int streamOffset = 0;
unsigned int outputElementSize = 0;
if (directStorage)
{
outputElementSize = attribs[i].stride();
streamOffset = attribs[i].mOffset + 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].mOffset / attribs[i].stride();
if (!staticBuffer->storeVertexAttributes(attribs[i], currentValues[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
{
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].mDivisor;
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].mArrayEnabled)
{
gl::Buffer *buffer = attribs[i].mBoundBuffer.get();
if (buffer)
{
buffer->promoteStaticUsage(count * attribs[i].typeSize());
}
}
}
return GL_NO_ERROR;
}