portersky
90d013695d
- Replace window class with cbt::opengl::context - Add buffer resource (VBO, EBO, UBO, SSBO) with move semantics - Add texture resource with format/type enums and filtering - Add descriptor_set for Vulkan-style resource binding - All resources use RAII with proper cleanup
86 lines
2.0 KiB
C++
86 lines
2.0 KiB
C++
#include "cbt/opengl/texture.hpp"
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#include "glad/glad.h"
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namespace cbt::opengl {
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texture::texture() {
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glGenTextures(1, &m_id);
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}
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texture::texture(texture_target target)
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: m_target(target) {
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glGenTextures(1, &m_id);
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}
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texture::~texture() {
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if (m_id) {
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glDeleteTextures(1, &m_id);
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}
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}
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texture::texture(texture&& other) noexcept
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: m_id(other.m_id)
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, m_target(other.m_target) {
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other.m_id = 0;
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}
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texture& texture::operator=(texture&& other) noexcept {
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if (this != &other) {
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if (m_id) {
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glDeleteTextures(1, &m_id);
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}
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m_id = other.m_id;
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m_target = other.m_target;
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other.m_id = 0;
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}
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return *this;
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}
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auto texture::bind(GLuint unit) -> void {
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glActiveTexture(GL_TEXTURE0 + unit);
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glBindTexture(static_cast<GLenum>(m_target), m_id);
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}
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auto texture::unbind() -> void {
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glBindTexture(static_cast<GLenum>(m_target), 0);
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}
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auto texture::upload(const void* data, int width, int height, texture_format format, texture_type type) -> void {
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bind();
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glTexImage2D(static_cast<GLenum>(m_target), 0,
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static_cast<GLenum>(format), width, height, 0,
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static_cast<GLenum>(format), static_cast<GLenum>(type), data);
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unbind();
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}
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auto texture::set_filter(GLenum min_filter, GLenum mag_filter) -> void {
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bind();
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glTexParameteri(static_cast<GLenum>(m_target), GL_TEXTURE_MIN_FILTER, min_filter);
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glTexParameteri(static_cast<GLenum>(m_target), GL_TEXTURE_MAG_FILTER, mag_filter);
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unbind();
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}
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auto texture::set_wrap(GLenum wrap_s, GLenum wrap_t) -> void {
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bind();
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glTexParameteri(static_cast<GLenum>(m_target), GL_TEXTURE_WRAP_S, wrap_s);
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glTexParameteri(static_cast<GLenum>(m_target), GL_TEXTURE_WRAP_T, wrap_t);
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unbind();
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}
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auto texture::generate_mipmaps() -> void {
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bind();
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glGenerateMipmap(static_cast<GLenum>(m_target));
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unbind();
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}
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auto texture::id() const -> GLuint {
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return m_id;
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}
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auto texture::valid() const -> bool {
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return m_id != 0;
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}
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}
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