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#include "vertex_buffer.h"
#include <glad/glad.h>
namespace Donut
{
auto VertexBufferElement::get_size_of_type(uint32_t type) -> uint32_t
{
switch (type)
{
case 0x1406: return 4; // GL_FLOAT
case 0x1405: return 4; // GL_UNSIGNED_INT
case 0x1401: return 1; // GL_UNSIGNED_BYTE
default: return 0;
}
}
VertexBuffer::VertexBuffer(const void* data, uint32_t size)
{
glGenBuffers(1, &m_renderer_id); // glCreateBuffers is 4.5 DSA; unavailable on macOS 4.1
glBindBuffer(GL_ARRAY_BUFFER, m_renderer_id);
glBufferData(GL_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);
}
VertexBuffer::~VertexBuffer()
{
glDeleteBuffers(1, &m_renderer_id);
}
auto VertexBuffer::bind() const -> void
{
glBindBuffer(GL_ARRAY_BUFFER, m_renderer_id);
}
auto VertexBuffer::unbind() const -> void
{
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
auto VertexBuffer::set_data(const void* data, uint32_t size) -> void
{
glBindBuffer(GL_ARRAY_BUFFER, m_renderer_id);
glBufferSubData(GL_ARRAY_BUFFER, 0, size, data);
}
auto VertexBuffer::create(const void* data, uint32_t size) -> VertexBuffer*
{
return new VertexBuffer(data, size);
}
};
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