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asarium
9da5cc17a3
This converts the previous plain-int type for a buffer handle to an instance of our ID class which provides type safety.
88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
#pragma once
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#include "graphics/2d.h"
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#include "UniformAligner.h"
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namespace graphics {
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namespace util {
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class UniformBufferManager;
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/**
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* @brief Manages a uniform buffer memory range
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*
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* This class will be used by the uniform buffer manager for allowing user code direct access to uniform buffer memory.
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* This also contains a UniformAligner which can be used for making sure that the data is aligned properly for GPU
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* access.
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*/
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class UniformBuffer {
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UniformBufferManager* _parent = nullptr;
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size_t _parent_offset = 0;
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gr_buffer_handle _buffer_handle;
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UniformAligner _aligner;
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public:
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UniformBuffer();
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UniformBuffer(UniformBufferManager* parent, size_t parent_offset, void* data_buffer, size_t buffer_size,
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size_t element_size, size_t header_size, size_t element_alignment);
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~UniformBuffer();
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UniformBuffer(const UniformBuffer&) = delete;
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UniformBuffer& operator=(const UniformBuffer&) = delete;
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UniformBuffer(UniformBuffer&&) = default;
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UniformBuffer& operator=(UniformBuffer&&) = default;
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inline UniformAligner& aligner() {
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return _aligner;
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}
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/**
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* @brief Gets the buffer handle for use with gr_bind_uniform_buffer.
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* @return The buffer handle
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*/
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gr_buffer_handle bufferHandle();
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/**
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* @brief Submits the data from the uniform aligner to the underlying buffer object.
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*
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* This should be called when you are done building the uniform data.
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*/
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void submitData();
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/**
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* @brief Given the offset into the memory buffer, returns the total offset in the buffer object
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*
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* This should be used for retrieving the correct offset for gr_bind_uniform_buffer.
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*
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* @param localOffset The offset into the local memory buffer (e.g. the return value of
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* UniformAligner::getCurrentOffset)
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* @return The absolute offset in the uniform buffer object.
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*/
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size_t getBufferOffset(size_t localOffset);
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/**
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* @brief Gets the absolute offset to the specified element in the aligner
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* This should be used for retrieving the correct offset for gr_bind_uniform_buffer.
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*
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* @param index The element index to be retrieved
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* @return The absolute offset in the uniform buffer object.
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*/
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size_t getAlignerElementOffset(size_t index);
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/**
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* @brief Gets the absolute offset of the current element in the aligner
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* This should be used for retrieving the correct offset for gr_bind_uniform_buffer.
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*
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* @return The absolute offset in the uniform buffer object.
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*/
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size_t getCurrentAlignerOffset();
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};
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}
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}
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