mirror of https://github.com/alibaba/MNN.git
45 lines
979 B
C++
45 lines
979 B
C++
//
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// GLSSBOBuffer.cpp
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// MNN
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//
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// Created by MNN on 2019/01/31.
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// Copyright © 2018, Alibaba Group Holding Limited
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//
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#include "backend/opengl/GLSSBOBuffer.hpp"
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namespace MNN {
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namespace OpenGL {
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GLSSBOBuffer::GLSSBOBuffer(GLsizeiptr size, GLenum type, GLenum usage) {
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mType = type;
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GLASSERT(size > 0);
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glGenBuffers(1, &mId);
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OPENGL_CHECK_ERROR;
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glBindBuffer(mType, mId);
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OPENGL_CHECK_ERROR;
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GLASSERT(mId > 0);
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glBufferData(mType, size, NULL, usage);
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OPENGL_CHECK_ERROR;
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mSize = size;
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}
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GLSSBOBuffer::~GLSSBOBuffer() {
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glDeleteBuffers(1, &mId);
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OPENGL_CHECK_ERROR;
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}
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void *GLSSBOBuffer::map(GLbitfield bufMask) {
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glBindBuffer(mType, mId);
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OPENGL_CHECK_ERROR;
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auto ptr = glMapBufferRange(mType, 0, mSize, bufMask);
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OPENGL_CHECK_ERROR;
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return ptr;
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}
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void GLSSBOBuffer::unmap() {
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glBindBuffer(mType, mId);
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glUnmapBuffer(mType);
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OPENGL_CHECK_ERROR;
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}
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} // namespace OpenGL
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} // namespace MNN
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