Clément Foucault
7ee816e32f
This is a faster way to clear a buffer instead of reuploading new data. It is equivalent to `memset` and runs directly on the GPU. This is better to clear huge buffers and to avoid the sync cost of data upload.
66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2022 Blender Foundation. All rights reserved. */
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/** \file
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* \ingroup gpu
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*/
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#pragma once
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#include "BLI_sys_types.h"
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struct GPUStorageBuf;
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namespace blender {
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namespace gpu {
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#ifdef DEBUG
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# define DEBUG_NAME_LEN 64
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#else
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# define DEBUG_NAME_LEN 8
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#endif
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/**
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* Implementation of Storage Buffers.
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* Base class which is then specialized for each implementation (GL, VK, ...).
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*/
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class StorageBuf {
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protected:
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/** Data size in bytes. */
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size_t size_in_bytes_;
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/** Continuous memory block to copy to GPU. This data is owned by the StorageBuf. */
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void *data_ = NULL;
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/** Debugging name */
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char name_[DEBUG_NAME_LEN];
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public:
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StorageBuf(size_t size, const char *name);
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virtual ~StorageBuf();
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virtual void update(const void *data) = 0;
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virtual void bind(int slot) = 0;
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virtual void unbind() = 0;
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virtual void clear(eGPUTextureFormat internal_format,
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eGPUDataFormat data_format,
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void *data) = 0;
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};
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/* Syntactic sugar. */
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static inline GPUStorageBuf *wrap(StorageBuf *vert)
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{
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return reinterpret_cast<GPUStorageBuf *>(vert);
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}
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static inline StorageBuf *unwrap(GPUStorageBuf *vert)
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{
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return reinterpret_cast<StorageBuf *>(vert);
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}
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static inline const StorageBuf *unwrap(const GPUStorageBuf *vert)
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{
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return reinterpret_cast<const StorageBuf *>(vert);
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}
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#undef DEBUG_NAME_LEN
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} // namespace gpu
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} // namespace blender
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