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https://github.com/RetroDECK/Supermodel.git
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40c8259130
The standard triangle render requires gl 4.1 core, so should work on mac. The quad renderer runs on 4.5 core. The legacy renderer should still work, and when enabled a regular opengl context will be created, which allows functions marked depreciated in the core profiles to still work. This will only work in windows/linux I think. Apple doesn't support this. A GL 4.1 GPU is now the min required spec. Sorry if you have an OLDER gpu. GL 4.1 is over 12 years old now. This is a big update so I apologise in advance if I accidently broke something :]
81 lines
1.3 KiB
C++
81 lines
1.3 KiB
C++
#include "VBO.h"
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VBO::VBO()
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{
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m_id = 0;
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m_target = 0;
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m_capacity = 0;
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m_size = 0;
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}
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void VBO::Create(GLenum target, GLenum usage, GLsizeiptr size, const void* data)
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{
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glGenBuffers(1, &m_id); // create a vbo
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glBindBuffer(target, m_id); // activate vbo id to use
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glBufferData(target, size, data, usage); // upload data to video card
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m_target = target;
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m_capacity = (int)size;
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m_size = 0;
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Bind(false); // unbind
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}
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void VBO::BufferSubData(GLintptr offset, GLsizeiptr size, const GLvoid* data)
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{
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glBufferSubData(m_target, offset, size, data);
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}
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bool VBO::AppendData(GLsizeiptr size, const GLvoid* data)
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{
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if (size == 0 || !data) {
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return true; // nothing to do
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}
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if (m_size + size >= m_capacity) {
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return false;
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}
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BufferSubData(m_size, size, data);
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m_size += (int)size;
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return true;
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}
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void VBO::Reset()
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{
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m_size = 0;
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}
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void VBO::Destroy()
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{
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if (m_id) {
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glDeleteBuffers(1, &m_id);
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m_id = 0;
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m_target = 0;
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m_capacity = 0;
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m_size = 0;
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}
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}
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void VBO::Bind(bool enable)
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{
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if (enable) {
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glBindBuffer(m_target, m_id);
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}
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else {
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glBindBuffer(m_target, 0);
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}
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}
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int VBO::GetSize()
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{
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return m_size;
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}
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int VBO::GetCapacity()
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{
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return m_capacity;
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}
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