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::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)
{
prepareStaticBufferForAttribute(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->promoteStaticVertexUsageForAttrib(curAttrib, count * ComputeVertexAttributeTypeSize(curAttrib));
}
}
}
return gl::Error(GL_NO_ERROR);
}
