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