102 lines
2.5 KiB
C++
102 lines
2.5 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2020 Blender Foundation.
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* All rights reserved.
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*/
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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 "glew-mx.h"
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#include "gpu_vertex_buffer_private.hh"
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namespace blender {
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namespace gpu {
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class GLVertBuf : public VertBuf {
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friend class GLTexture; /* For buffer texture. */
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friend class GLShader; /* For transform feedback. */
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private:
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/** OpenGL buffer handle. Init on first upload. Immutable after that. */
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GLuint vbo_id_ = 0;
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/** Size on the GPU. */
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size_t vbo_size_ = 0;
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public:
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void bind(void);
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void update_sub(uint start, uint len, void *data) override;
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protected:
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void acquire_data(void) override;
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void resize_data(void) override;
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void release_data(void) override;
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void upload_data(void) override;
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void duplicate_data(VertBuf *dst) override;
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MEM_CXX_CLASS_ALLOC_FUNCS("GLVertBuf");
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};
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static inline GLenum to_gl(GPUUsageType type)
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{
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switch (type) {
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case GPU_USAGE_STREAM:
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return GL_STREAM_DRAW;
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case GPU_USAGE_DYNAMIC:
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return GL_DYNAMIC_DRAW;
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case GPU_USAGE_STATIC:
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return GL_STATIC_DRAW;
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default:
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BLI_assert(0);
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return GL_STATIC_DRAW;
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}
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}
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static inline GLenum to_gl(GPUVertCompType type)
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{
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switch (type) {
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case GPU_COMP_I8:
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return GL_BYTE;
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case GPU_COMP_U8:
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return GL_UNSIGNED_BYTE;
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case GPU_COMP_I16:
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return GL_SHORT;
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case GPU_COMP_U16:
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return GL_UNSIGNED_SHORT;
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case GPU_COMP_I32:
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return GL_INT;
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case GPU_COMP_U32:
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return GL_UNSIGNED_INT;
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case GPU_COMP_F32:
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return GL_FLOAT;
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case GPU_COMP_I10:
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return GL_INT_2_10_10_10_REV;
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default:
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BLI_assert(0);
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return GL_FLOAT;
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}
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}
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} // namespace gpu
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} // namespace blender
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