mirror of https://github.com/PCSX2/pcsx2.git
72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
/*
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* Copyright (C) 2011-2011 Gregory hainaut
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* Copyright (C) 2007-2009 Gabest
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*
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* This Program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* 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 GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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*/
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// Note: it is same code that was developed for GSdx plugin
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#pragma once
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#ifdef GLSL4_API
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class GSUniformBufferOGL {
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GLuint buffer; // data object
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GLuint index; // GLSL slot
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uint size; // size of the data
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const GLenum target;
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public:
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GSUniformBufferOGL(GLuint index, uint size) : index(index)
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, size(size)
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,target(GL_UNIFORM_BUFFER)
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{
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glGenBuffers(1, &buffer);
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bind();
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allocate();
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attach();
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}
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void bind()
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{
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glBindBuffer(target, buffer);
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}
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void allocate()
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{
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glBufferData(target, size, NULL, GL_STREAM_DRAW);
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}
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void attach()
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{
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glBindBufferBase(target, index, buffer);
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}
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void upload(const void* src)
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{
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uint32 flags = GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT;
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uint8* dst = (uint8*) glMapBufferRange(target, 0, size, flags);
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memcpy(dst, src, size);
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glUnmapBuffer(target);
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}
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~GSUniformBufferOGL() {
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glDeleteBuffers(1, &buffer);
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}
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};
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#endif
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