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(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);
}
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;
}
