gl::Error VertexArrayGL::syncDrawState(const std::vector<GLuint> &activeAttribLocations, GLint first, GLsizei count, GLenum type, const GLvoid *indices, const GLvoid **outIndices) const
{
mStateManager->bindVertexArray(mVertexArrayID, mAppliedElementArrayBuffer);
// Check if any attributes need to be streamed, determines if the index range needs to be computed
bool attributesNeedStreaming = doAttributesNeedStreaming(activeAttribLocations);
// Determine if an index buffer needs to be streamed and the range of vertices that need to be copied
gl::RangeUI indexRange(0, 0);
if (type != GL_NONE)
{
gl::Error error = syncIndexData(count, type, indices, attributesNeedStreaming, &indexRange, outIndices);
if (error.isError())
{
return error;
}
}
else
{
// Not an indexed call, set the range to [first, first + count)
indexRange.start = first;
indexRange.end = first + count;
}
// Sync the vertex attribute state and track what data needs to be streamed
size_t streamingDataSize = 0;
size_t maxAttributeDataSize = 0;
gl::Error error = syncAttributeState(activeAttribLocations, attributesNeedStreaming, indexRange,
&streamingDataSize, &maxAttributeDataSize);
if (error.isError())
{
return error;
}
if (streamingDataSize > 0)
{
ASSERT(attributesNeedStreaming);
gl::Error error = streamAttributes(activeAttribLocations, streamingDataSize, maxAttributeDataSize,
indexRange);
if (error.isError())
{
return error;
}
}
return gl::Error(GL_NO_ERROR);
}
gl::Error VertexArrayGL::syncDrawState(const gl::AttributesMask &activeAttributesMask,
GLint first,
GLsizei count,
GLenum type,
const GLvoid *indices,
GLsizei instanceCount,
bool primitiveRestartEnabled,
const GLvoid **outIndices) const
{
mStateManager->bindVertexArray(mVertexArrayID, getAppliedElementArrayBufferID());
// Check if any attributes need to be streamed, determines if the index range needs to be computed
bool attributesNeedStreaming = mAttributesNeedStreaming.any();
// Determine if an index buffer needs to be streamed and the range of vertices that need to be copied
IndexRange indexRange;
if (type != GL_NONE)
{
Error error = syncIndexData(count, type, indices, primitiveRestartEnabled,
attributesNeedStreaming, &indexRange, outIndices);
if (error.isError())
{
return error;
}
}
else
{
// Not an indexed call, set the range to [first, first + count - 1]
indexRange.start = first;
indexRange.end = first + count - 1;
}
if (attributesNeedStreaming)
{
Error error = streamAttributes(activeAttributesMask, instanceCount, indexRange);
if (error.isError())
{
return error;
}
}
return Error(GL_NO_ERROR);
}
