ANGLE_INLINE void VertexArray::setVertexAttribPointerImpl(const Context *context,
ComponentType componentType,
bool pureInteger,
size_t attribIndex,
Buffer *boundBuffer,
GLint size,
VertexAttribType type,
bool normalized,
GLsizei stride,
const void *pointer)
{
ASSERT(attribIndex < getMaxAttribs());
GLintptr offset = boundBuffer ? reinterpret_cast<GLintptr>(pointer) : 0;
VertexAttribute &attrib = mState.mVertexAttributes[attribIndex];
attrib.pureInteger = pureInteger;
SetComponentTypeMask(componentType, attribIndex, &mState.mVertexAttributesTypeMask);
setVertexAttribFormatImpl(&attrib, size, type, normalized, 0);
setVertexAttribBinding(context, attribIndex, static_cast<GLuint>(attribIndex));
GLsizei effectiveStride =
stride != 0 ? stride : static_cast<GLsizei>(ComputeVertexAttributeTypeSize(attrib));
attrib.pointer = pointer;
attrib.vertexAttribArrayStride = stride;
bindVertexBufferImpl(context, attribIndex, boundBuffer, offset, effectiveStride);
setDirtyAttribBit(attribIndex, DIRTY_ATTRIB_POINTER);
mState.mNullPointerClientMemoryAttribsMask.set(attribIndex,
boundBuffer == nullptr && pointer == nullptr);
}
void VertexArrayGL::computeStreamingAttributeSizes(const gl::AttributesMask &activeAttributesMask,
const gl::RangeUI &indexRange,
size_t *outStreamingDataSize,
size_t *outMaxAttributeDataSize) const
{
*outStreamingDataSize = 0;
*outMaxAttributeDataSize = 0;
ASSERT(mAttributesNeedStreaming.any());
const auto &attribs = mData.getVertexAttributes();
for (unsigned int idx : angle::IterateBitSet(mAttributesNeedStreaming & activeAttributesMask))
{
const auto &attrib = attribs[idx];
ASSERT(AttributeNeedsStreaming(attrib));
const size_t streamedVertexCount = indexRange.end - indexRange.start + 1;
// If streaming is going to be required, compute the size of the required buffer
// and how much slack space at the beginning of the buffer will be required by determining
// the attribute with the largest data size.
size_t typeSize = ComputeVertexAttributeTypeSize(attrib);
*outStreamingDataSize += typeSize * streamedVertexCount;
*outMaxAttributeDataSize = std::max(*outMaxAttributeDataSize, typeSize);
}
}
void VertexArrayGL::computeStreamingAttributeSizes(const gl::AttributesMask &activeAttributesMask,
GLsizei instanceCount,
const gl::IndexRange &indexRange,
size_t *outStreamingDataSize,
size_t *outMaxAttributeDataSize) const
{
*outStreamingDataSize = 0;
*outMaxAttributeDataSize = 0;
ASSERT(mAttributesNeedStreaming.any());
const auto &attribs = mState.getVertexAttributes();
const auto &bindings = mState.getVertexBindings();
gl::AttributesMask attribsToStream = (mAttributesNeedStreaming & activeAttributesMask);
for (auto idx : attribsToStream)
{
const auto &attrib = attribs[idx];
const auto &binding = bindings[attrib.bindingIndex];
ASSERT(AttributeNeedsStreaming(attrib, binding));
// If streaming is going to be required, compute the size of the required buffer
// and how much slack space at the beginning of the buffer will be required by determining
// the attribute with the largest data size.
size_t typeSize = ComputeVertexAttributeTypeSize(attrib);
GLuint adjustedDivisor = GetAdjustedDivisor(mAppliedNumViews, binding.getDivisor());
*outStreamingDataSize +=
typeSize * ComputeVertexBindingElementCount(adjustedDivisor, indexRange.vertexCount(),
instanceCount);
*outMaxAttributeDataSize = std::max(*outMaxAttributeDataSize, typeSize);
}
}
size_t ComputeVertexAttributeStride(const VertexAttribute& attrib)
{
if (!attrib.enabled)
{
return 16;
}
return attrib.stride ? attrib.stride : ComputeVertexAttributeTypeSize(attrib);
}
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;
}
gl::Error VertexDataManager::storeDynamicAttribs(
std::vector<TranslatedAttribute> *translatedAttribs,
const gl::AttributesMask &dynamicAttribsMask,
GLint start,
GLsizei count,
GLsizei instances)
{
// Reserve the required space for the dynamic buffers.
for (auto attribIndex : angle::IterateBitSet(dynamicAttribsMask))
{
const auto &dynamicAttrib = (*translatedAttribs)[attribIndex];
gl::Error error = reserveSpaceForAttrib(dynamicAttrib, count, instances);
if (error.isError())
{
return error;
}
}
// Store dynamic attributes
for (auto attribIndex : angle::IterateBitSet(dynamicAttribsMask))
{
auto *dynamicAttrib = &(*translatedAttribs)[attribIndex];
gl::Error error = storeDynamicAttrib(dynamicAttrib, start, count, instances);
if (error.isError())
{
unmapStreamingBuffer();
return error;
}
}
unmapStreamingBuffer();
// Promote static usage of dynamic buffers.
for (auto attribIndex : angle::IterateBitSet(dynamicAttribsMask))
{
auto *dynamicAttrib = &(*translatedAttribs)[attribIndex];
gl::Buffer *buffer = dynamicAttrib->attribute->buffer.get();
if (buffer)
{
BufferD3D *bufferD3D = GetImplAs<BufferD3D>(buffer);
size_t typeSize = ComputeVertexAttributeTypeSize(*dynamicAttrib->attribute);
bufferD3D->promoteStaticUsage(count * static_cast<int>(typeSize));
}
}
return gl::Error(GL_NO_ERROR);
}
void VertexDataManager::PromoteDynamicAttribs(
const gl::Context *context,
const std::vector<TranslatedAttribute> &translatedAttribs,
const gl::AttributesMask &dynamicAttribsMask,
size_t count)
{
for (auto attribIndex : dynamicAttribsMask)
{
const auto &dynamicAttrib = translatedAttribs[attribIndex];
ASSERT(dynamicAttrib.attribute && dynamicAttrib.binding);
const auto &binding = *dynamicAttrib.binding;
gl::Buffer *buffer = binding.getBuffer().get();
if (buffer)
{
// Note: this multiplication can overflow. It should not be a security problem.
BufferD3D *bufferD3D = GetImplAs<BufferD3D>(buffer);
size_t typeSize = ComputeVertexAttributeTypeSize(*dynamicAttrib.attribute);
bufferD3D->promoteStaticUsage(context, count * typeSize);
}
}
}
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 VertexArrayGL::streamAttributes(const std::vector<GLuint> &activeAttribLocations, size_t streamingDataSize,
size_t maxAttributeDataSize, const gl::RangeUI &indexRange) const
{
if (mStreamingArrayBuffer == 0)
{
mFunctions->genBuffers(1, &mStreamingArrayBuffer);
mStreamingArrayBufferSize = 0;
}
// If first is greater than zero, a slack space needs to be left at the beginning of the buffer so that
// the same 'first' argument can be passed into the draw call.
const size_t bufferEmptySpace = maxAttributeDataSize * indexRange.start;
const size_t requiredBufferSize = streamingDataSize + bufferEmptySpace;
mStateManager->bindBuffer(GL_ARRAY_BUFFER, mStreamingArrayBuffer);
if (requiredBufferSize > mStreamingArrayBufferSize)
{
mFunctions->bufferData(GL_ARRAY_BUFFER, requiredBufferSize, nullptr, GL_DYNAMIC_DRAW);
mStreamingArrayBufferSize = requiredBufferSize;
}
// Unmapping a buffer can return GL_FALSE to indicate that the system has corrupted the data
// somehow (such as by a screen change), retry writing the data a few times and return OUT_OF_MEMORY
// if that fails.
GLboolean unmapResult = GL_FALSE;
size_t unmapRetryAttempts = 5;
while (unmapResult != GL_TRUE && --unmapRetryAttempts > 0)
{
uint8_t *bufferPointer = reinterpret_cast<uint8_t*>(mFunctions->mapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY));
size_t curBufferOffset = bufferEmptySpace;
const size_t streamedVertexCount = indexRange.end - indexRange.start + 1;
const auto &attribs = mData.getVertexAttributes();
for (size_t activeAttrib = 0; activeAttrib < activeAttribLocations.size(); activeAttrib++)
{
GLuint idx = activeAttribLocations[activeAttrib];
const auto &attrib = attribs[idx];
if (attrib.enabled && attrib.buffer.get() == nullptr)
{
const size_t sourceStride = ComputeVertexAttributeStride(attrib);
const size_t destStride = ComputeVertexAttributeTypeSize(attrib);
const uint8_t *inputPointer = reinterpret_cast<const uint8_t*>(attrib.pointer);
// Pack the data when copying it, user could have supplied a very large stride that would
// cause the buffer to be much larger than needed.
if (destStride == sourceStride)
{
// Can copy in one go, the data is packed
memcpy(bufferPointer + curBufferOffset,
inputPointer + (sourceStride * indexRange.start),
destStride * streamedVertexCount);
}
else
{
// Copy each vertex individually
for (size_t vertexIdx = indexRange.start; vertexIdx <= indexRange.end; vertexIdx++)
{
memcpy(bufferPointer + curBufferOffset + (destStride * vertexIdx),
inputPointer + (sourceStride * vertexIdx),
destStride);
}
}
// Compute where the 0-index vertex would be.
const size_t vertexStartOffset = curBufferOffset - (indexRange.start * destStride);
mFunctions->vertexAttribPointer(idx, attrib.size, attrib.type,
attrib.normalized, destStride,
reinterpret_cast<const GLvoid*>(vertexStartOffset));
curBufferOffset += destStride * streamedVertexCount;
// Mark the applied attribute as dirty by setting an invalid size so that if it doesn't
// need to be streamed later, there is no chance that the caching will skip it.
mAppliedAttributes[idx].size = static_cast<GLuint>(-1);
}
}
unmapResult = mFunctions->unmapBuffer(GL_ARRAY_BUFFER);
}
if (unmapResult != GL_TRUE)
{
return gl::Error(GL_OUT_OF_MEMORY, "Failed to unmap the client data streaming buffer.");
}
return gl::Error(GL_NO_ERROR);
}
gl::Error VertexArrayGL::syncAttributeState(const std::vector<GLuint> &activeAttribLocations, bool attributesNeedStreaming,
const gl::RangeUI &indexRange, size_t *outStreamingDataSize, size_t *outMaxAttributeDataSize) const
{
*outStreamingDataSize = 0;
*outMaxAttributeDataSize = 0;
const auto &attribs = mData.getVertexAttributes();
for (size_t activeAttrib = 0; activeAttrib < activeAttribLocations.size(); activeAttrib++)
{
GLuint idx = activeAttribLocations[activeAttrib];
const auto &attrib = attribs[idx];
// Always sync the enabled and divisor state, they are required for both streaming and buffered
// attributes
if (mAppliedAttributes[idx].enabled != attrib.enabled)
{
if (attrib.enabled)
{
mFunctions->enableVertexAttribArray(idx);
}
else
{
mFunctions->disableVertexAttribArray(idx);
}
mAppliedAttributes[idx].enabled = attrib.enabled;
}
if (mAppliedAttributes[idx].divisor != attrib.divisor)
{
mFunctions->vertexAttribDivisor(idx, attrib.divisor);
mAppliedAttributes[idx].divisor = attrib.divisor;
}
if (attribs[idx].enabled && attrib.buffer.get() == nullptr)
{
ASSERT(attributesNeedStreaming);
const size_t streamedVertexCount = indexRange.end - indexRange.start + 1;
// If streaming is going to be required, compute the size of the required buffer
// and how much slack space at the beginning of the buffer will be required by determining
// the attribute with the largest data size.
size_t typeSize = ComputeVertexAttributeTypeSize(attrib);
*outStreamingDataSize += typeSize * streamedVertexCount;
*outMaxAttributeDataSize = std::max(*outMaxAttributeDataSize, typeSize);
}
else
{
// Sync the attribute with no translation
if (mAppliedAttributes[idx] != attrib)
{
const gl::Buffer *arrayBuffer = attrib.buffer.get();
if (arrayBuffer != nullptr)
{
const BufferGL *arrayBufferGL = GetImplAs<BufferGL>(arrayBuffer);
mStateManager->bindBuffer(GL_ARRAY_BUFFER, arrayBufferGL->getBufferID());
}
else
{
mStateManager->bindBuffer(GL_ARRAY_BUFFER, 0);
}
if (attrib.pureInteger)
{
mFunctions->vertexAttribIPointer(idx, attrib.size, attrib.type,
attrib.stride, attrib.pointer);
}
else
{
mFunctions->vertexAttribPointer(idx, attrib.size, attrib.type,
attrib.normalized, attrib.stride,
attrib.pointer);
}
mAppliedAttributes[idx] = attrib;
}
}
}
return gl::Error(GL_NO_ERROR);
}
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.");
}
// 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);
const gl::VertexAttribute &curAttrib = state.getVertexAttribState(attributeIndex);
if (translated[attributeIndex].active && curAttrib.enabled)
{
invalidateMatchingStaticData(curAttrib, state.getVertexAttribCurrentValue(attributeIndex));
}
}
// Reserve the required space in the buffers
for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
{
const gl::VertexAttribute &curAttrib = state.getVertexAttribState(i);
if (translated[i].active && curAttrib.enabled)
{
gl::Error error = reserveSpaceForAttrib(curAttrib, 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 = state.getVertexAttribState(i);
if (translated[i].active)
{
if (curAttrib.enabled)
{
gl::Error error = storeAttribute(curAttrib, state.getVertexAttribCurrentValue(i),
&translated[i], start, count, instances);
if (error.isError())
{
return error;
}
}
else
{
if (!mCurrentValueBuffer[i])
{
mCurrentValueBuffer[i] = new StreamingVertexBufferInterface(mRenderer, CONSTANT_VERTEX_BUFFER_SIZE);
}
gl::Error error = storeCurrentValue(curAttrib, state.getVertexAttribCurrentValue(i), &translated[i],
&mCurrentValue[i], &mCurrentValueOffsets[i],
mCurrentValueBuffer[i]);
if (error.isError())
{
return error;
}
}
}
}
for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
{
const gl::VertexAttribute &curAttrib = state.getVertexAttribState(i);
if (translated[i].active && curAttrib.enabled)
{
gl::Buffer *buffer = curAttrib.buffer.get();
if (buffer)
{
BufferD3D *bufferImpl = BufferD3D::makeBufferD3D(buffer->getImplementation());
bufferImpl->promoteStaticUsage(count * ComputeVertexAttributeTypeSize(curAttrib));
}
}
}
return gl::Error(GL_NO_ERROR);
}
gl::Error VertexArrayGL::streamAttributes(const gl::AttributesMask &activeAttributesMask,
GLsizei instanceCount,
const gl::IndexRange &indexRange) const
{
// Sync the vertex attribute state and track what data needs to be streamed
size_t streamingDataSize = 0;
size_t maxAttributeDataSize = 0;
computeStreamingAttributeSizes(activeAttributesMask, instanceCount, indexRange,
&streamingDataSize, &maxAttributeDataSize);
if (streamingDataSize == 0)
{
return gl::NoError();
}
if (mStreamingArrayBuffer == 0)
{
mFunctions->genBuffers(1, &mStreamingArrayBuffer);
mStreamingArrayBufferSize = 0;
}
// If first is greater than zero, a slack space needs to be left at the beginning of the buffer
// so that the same 'first' argument can be passed into the draw call.
const size_t bufferEmptySpace = maxAttributeDataSize * indexRange.start;
const size_t requiredBufferSize = streamingDataSize + bufferEmptySpace;
mStateManager->bindBuffer(gl::BufferBinding::Array, mStreamingArrayBuffer);
if (requiredBufferSize > mStreamingArrayBufferSize)
{
mFunctions->bufferData(GL_ARRAY_BUFFER, requiredBufferSize, nullptr, GL_DYNAMIC_DRAW);
mStreamingArrayBufferSize = requiredBufferSize;
}
// Unmapping a buffer can return GL_FALSE to indicate that the system has corrupted the data
// somehow (such as by a screen change), retry writing the data a few times and return
// OUT_OF_MEMORY if that fails.
GLboolean unmapResult = GL_FALSE;
size_t unmapRetryAttempts = 5;
while (unmapResult != GL_TRUE && --unmapRetryAttempts > 0)
{
uint8_t *bufferPointer = MapBufferRangeWithFallback(mFunctions, GL_ARRAY_BUFFER, 0,
requiredBufferSize, GL_MAP_WRITE_BIT);
size_t curBufferOffset = bufferEmptySpace;
const auto &attribs = mState.getVertexAttributes();
const auto &bindings = mState.getVertexBindings();
gl::AttributesMask attribsToStream = (mAttributesNeedStreaming & activeAttributesMask);
for (auto idx : attribsToStream)
{
const auto &attrib = attribs[idx];
ASSERT(IsVertexAttribPointerSupported(idx, attrib));
const auto &binding = bindings[attrib.bindingIndex];
ASSERT(AttributeNeedsStreaming(attrib, binding));
GLuint adjustedDivisor = GetAdjustedDivisor(mAppliedNumViews, binding.getDivisor());
const size_t streamedVertexCount = ComputeVertexBindingElementCount(
adjustedDivisor, indexRange.vertexCount(), instanceCount);
const size_t sourceStride = ComputeVertexAttributeStride(attrib, binding);
const size_t destStride = ComputeVertexAttributeTypeSize(attrib);
// Vertices do not apply the 'start' offset when the divisor is non-zero even when doing
// a non-instanced draw call
const size_t firstIndex = adjustedDivisor == 0 ? indexRange.start : 0;
// Attributes using client memory ignore the VERTEX_ATTRIB_BINDING state.
// https://www.opengl.org/registry/specs/ARB/vertex_attrib_binding.txt
const uint8_t *inputPointer = reinterpret_cast<const uint8_t *>(attrib.pointer);
// Pack the data when copying it, user could have supplied a very large stride that
// would cause the buffer to be much larger than needed.
if (destStride == sourceStride)
{
// Can copy in one go, the data is packed
memcpy(bufferPointer + curBufferOffset, inputPointer + (sourceStride * firstIndex),
destStride * streamedVertexCount);
}
else
{
// Copy each vertex individually
for (size_t vertexIdx = 0; vertexIdx < streamedVertexCount; vertexIdx++)
{
uint8_t *out = bufferPointer + curBufferOffset + (destStride * vertexIdx);
const uint8_t *in = inputPointer + sourceStride * (vertexIdx + firstIndex);
memcpy(out, in, destStride);
}
}
// Compute where the 0-index vertex would be.
const size_t vertexStartOffset = curBufferOffset - (firstIndex * destStride);
callVertexAttribPointer(static_cast<GLuint>(idx), attrib,
static_cast<GLsizei>(destStride),
static_cast<GLintptr>(vertexStartOffset));
curBufferOffset += destStride * streamedVertexCount;
}
unmapResult = mFunctions->unmapBuffer(GL_ARRAY_BUFFER);
}
if (unmapResult != GL_TRUE)
{
return gl::OutOfMemory() << "Failed to unmap the client data streaming buffer.";
}
return gl::NoError();
}
