Adam Macdonald
a8d8b9b9ab
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80 lines
2.2 KiB
C++
80 lines
2.2 KiB
C++
#pragma once
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#include "graphics/opengl/texture.hpp"
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#include <glad/gl.h>
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#include <glm/vec2.hpp>
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#include <array>
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#include <cstdint>
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#include <memory>
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namespace kuiper
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{
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namespace gl
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{
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class framebuffer {
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public:
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using s_ptr = std::shared_ptr<framebuffer>;
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// OpenGL mandates at least 8 colour buffers
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static constexpr std::uint32_t max_colour_attachments = 8;
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using col_tex_storage = std::array<texture::s_ptr, max_colour_attachments>;
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explicit framebuffer(GLuint id)
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: m_id(id) {}
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~framebuffer() {
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destroy();
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}
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framebuffer(const framebuffer& other) = delete;
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framebuffer& operator=(const framebuffer& other) = delete;
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framebuffer(framebuffer&& other) noexcept = default;
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framebuffer& operator=(framebuffer&& other) noexcept = default;
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static s_ptr make() noexcept;
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static s_ptr make_default(std::uint32_t width, std::uint32_t height) noexcept;
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public:
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void destroy() noexcept;
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void bind() const noexcept;
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void resize(std::uint32_t width, std::uint32_t height) noexcept;
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GLuint id() const noexcept {
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return m_id;
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}
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const col_tex_storage& colour_tex() const noexcept {
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return m_colour_texs;
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}
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const texture::s_ptr& depth_tex() const noexcept {
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return m_depth_tex;
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}
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glm::u32vec2 dimensions() const noexcept {
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return {m_width, m_height};
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}
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// Attach a colour texture to the framebuffer, optionally at a given attachment point. Takes ownership of `tex`.
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void attach_colour(texture::s_ptr&& tex, std::uint32_t attachment_point = 0) noexcept;
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// Attach a depth AND stencil texture to the framebuffer. Takes ownership of `tex`.
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void attach_depth(texture::s_ptr&& tex) noexcept;
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private:
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GLuint m_id {0};
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col_tex_storage m_colour_texs {};
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texture::s_ptr m_depth_tex {nullptr};
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std::uint32_t m_width {0};
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std::uint32_t m_height {0};
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};
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} // namespace gl
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} // namespace kuiper
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