Clément Foucault
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.
52 lines
1.2 KiB
C++
52 lines
1.2 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 "MEM_guardedalloc.h"
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#include "gpu_storage_buffer_private.hh"
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#include "glew-mx.h"
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namespace blender {
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namespace gpu {
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/**
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* Implementation of Storage Buffers using OpenGL.
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*/
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class GLStorageBuf : public StorageBuf {
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private:
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/** Slot to which this UBO is currently bound. -1 if not bound. */
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int slot_ = -1;
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/** OpenGL Object handle. */
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GLuint ssbo_id_ = 0;
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/** Usage type. */
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GPUUsageType usage_;
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public:
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GLStorageBuf(size_t size, GPUUsageType usage, const char *name);
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~GLStorageBuf();
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void update(const void *data) override;
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void bind(int slot) override;
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void unbind() override;
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void clear(eGPUTextureFormat internal_format, eGPUDataFormat data_format, void *data) override;
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void copy_sub(VertBuf *src, uint dst_offset, uint src_offset, uint copy_size) override;
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/* Special internal function to bind SSBOs to indirect argument targets. */
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void bind_as(GLenum target);
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private:
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void init();
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MEM_CXX_CLASS_ALLOC_FUNCS("GLStorageBuf");
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};
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} // namespace gpu
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} // namespace blender
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