33c5adba62
This allows using the Graphic API to copy buffer data. The GPU module do not expose untyped buffers even if that's what most API do, so the copy function need to be strongly typed. Contains GL backend implementation.
64 lines
2.0 KiB
C
64 lines
2.0 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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* Storage buffers API. Used to handle many way bigger buffers than Uniform buffers update at once.
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* Make sure that the data structure is compatible with what the implementation expect.
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* (see "7.8 Shader Buffer Variables and Shader Storage Blocks" from the OpenGL spec for more info
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* about std430 layout)
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* Rule of thumb: Padding to 16bytes, don't use vec3.
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*/
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#pragma once
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#include "GPU_texture.h"
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#include "GPU_vertex_buffer.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct ListBase;
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/** Opaque type hiding blender::gpu::StorageBuf. */
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typedef struct GPUStorageBuf GPUStorageBuf;
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GPUStorageBuf *GPU_storagebuf_create_ex(size_t size,
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const void *data,
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GPUUsageType usage,
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const char *name);
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#define GPU_storagebuf_create(size) \
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GPU_storagebuf_create_ex(size, NULL, GPU_USAGE_DYNAMIC, __func__);
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void GPU_storagebuf_free(GPUStorageBuf *ssbo);
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void GPU_storagebuf_update(GPUStorageBuf *ssbo, const void *data);
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void GPU_storagebuf_bind(GPUStorageBuf *ssbo, int slot);
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void GPU_storagebuf_unbind(GPUStorageBuf *ssbo);
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void GPU_storagebuf_unbind_all(void);
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void GPU_storagebuf_clear(GPUStorageBuf *ssbo,
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eGPUTextureFormat internal_format,
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eGPUDataFormat data_format,
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void *data);
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void GPU_storagebuf_clear_to_zero(GPUStorageBuf *ssbo);
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/**
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* @brief Copy a part of a vertex buffer to a storage buffer.
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* \a ssbo: destination storage buffer
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* \a src: source vertex buffer
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* \a dst_offset: where to start copying to (in bytes).
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* \a src_offset: where to start copying from (in bytes).
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* \a copy_size: byte size of the segment to copy.
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*/
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void GPU_storagebuf_copy_sub_from_vertbuf(
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GPUStorageBuf *ssbo, GPUVertBuf *src, uint dst_offset, uint src_offset, uint copy_size);
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#ifdef __cplusplus
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}
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#endif
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