139 lines
2.9 KiB
C++
139 lines
2.9 KiB
C++
#include <cstddef>
|
|
#include <glad/gl.h>
|
|
#include <logger/logger.hpp>
|
|
#include <renderer/gl/buffers.hpp>
|
|
|
|
namespace lt {
|
|
|
|
//==================== CONSTANT_BUFFER ====================//
|
|
glConstantBuffer::glConstantBuffer(ConstantBufferIndex index, unsigned int size)
|
|
: m_buffer_id()
|
|
, m_index(static_cast<int>(index))
|
|
{
|
|
glCreateBuffers(1, &m_buffer_id);
|
|
glNamedBufferData(m_buffer_id, size, nullptr, GL_DYNAMIC_DRAW);
|
|
|
|
bind();
|
|
}
|
|
|
|
glConstantBuffer::~glConstantBuffer()
|
|
{
|
|
glDeleteBuffers(1, &m_buffer_id);
|
|
}
|
|
|
|
void glConstantBuffer::bind()
|
|
{
|
|
glBindBufferBase(GL_UNIFORM_BUFFER, m_index, m_buffer_id);
|
|
}
|
|
|
|
auto glConstantBuffer::map() -> void *
|
|
{
|
|
auto *map = glMapNamedBuffer(m_buffer_id, GL_WRITE_ONLY);
|
|
return map;
|
|
}
|
|
|
|
void glConstantBuffer::un_map()
|
|
{
|
|
glUnmapNamedBuffer(m_buffer_id);
|
|
}
|
|
//==================== CONSTANT_BUFFER ====================//
|
|
|
|
//==================== VERTEX_BUFFER ====================//
|
|
glVertexBuffer::glVertexBuffer(float *vertices, unsigned int stride, unsigned int count)
|
|
: m_buffer_id()
|
|
{
|
|
glCreateBuffers(1, &m_buffer_id);
|
|
glNamedBufferData(
|
|
m_buffer_id,
|
|
static_cast<GLsizeiptr>(stride * count),
|
|
vertices,
|
|
GL_DYNAMIC_DRAW
|
|
);
|
|
}
|
|
|
|
glVertexBuffer::~glVertexBuffer()
|
|
{
|
|
glDeleteBuffers(1, &m_buffer_id);
|
|
}
|
|
|
|
void glVertexBuffer::bind()
|
|
{
|
|
glBindBuffer(GL_ARRAY_BUFFER, m_buffer_id);
|
|
}
|
|
|
|
void glVertexBuffer::un_bind()
|
|
{
|
|
glBindBuffer(GL_ARRAY_BUFFER, {});
|
|
}
|
|
|
|
auto glVertexBuffer::map() -> void *
|
|
{
|
|
return glMapNamedBuffer(m_buffer_id, GL_WRITE_ONLY);
|
|
}
|
|
|
|
void glVertexBuffer::un_map()
|
|
{
|
|
glUnmapNamedBuffer(m_buffer_id);
|
|
}
|
|
//==================== VERTEX_BUFFER ====================//
|
|
|
|
//==================== INDEX_BUFFER ====================//
|
|
glIndexBuffer::glIndexBuffer(unsigned int *indices, unsigned int count): m_buffer_id()
|
|
{
|
|
// generate indices if not provided
|
|
auto hasIndices = !!indices;
|
|
if (!hasIndices)
|
|
{
|
|
// check
|
|
if (count % 6 != 0)
|
|
{
|
|
log_wrn("'indices' can only be null if count is multiple of 6");
|
|
log_wrn("Adding {} to 'count' -> {}", (6 - (count % 6)), count + (6 - (count % 6)));
|
|
count = count + (6 - (count % 6));
|
|
}
|
|
|
|
// create indices
|
|
indices = new unsigned int[count];
|
|
auto offset = 0u;
|
|
for (auto i = 0u; i < count; i += 6u)
|
|
{
|
|
indices[i + 0] = offset + 0u;
|
|
indices[i + 1] = offset + 1u;
|
|
indices[i + 2] = offset + 2u;
|
|
|
|
indices[i + 3] = offset + 2u;
|
|
indices[i + 4] = offset + 3u;
|
|
indices[i + 5] = offset + 0u;
|
|
|
|
offset += 4u;
|
|
}
|
|
}
|
|
|
|
// create buffer
|
|
glCreateBuffers(1, &m_buffer_id);
|
|
glNamedBufferData(m_buffer_id, count * sizeof(unsigned int), indices, GL_STATIC_DRAW);
|
|
|
|
// delete indices
|
|
if (!hasIndices)
|
|
{
|
|
delete[] indices;
|
|
}
|
|
}
|
|
|
|
glIndexBuffer::~glIndexBuffer()
|
|
{
|
|
glDeleteBuffers(1, &m_buffer_id);
|
|
}
|
|
|
|
void glIndexBuffer::bind()
|
|
{
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_buffer_id);
|
|
}
|
|
|
|
void glIndexBuffer::un_bind()
|
|
{
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, {});
|
|
}
|
|
//==================== INDEX_BUFFER ====================//
|
|
|
|
} // namespace lt
|