131 lines
2.7 KiB
C++
131 lines
2.7 KiB
C++
#pragma once
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#include "texture.hpp"
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#include "renderbuffer.hpp"
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#ifndef __gl_h_
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#include <glad/glad.h>
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#endif
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namespace hpr::gpu
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{
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class Framebuffer
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{
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protected:
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Texture p_texture;
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Renderbuffer p_renderbuffer;
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unsigned int p_index;
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bool p_binded;
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public:
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inline
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Framebuffer() :
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p_index {0},
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p_texture {},
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p_renderbuffer {}
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{}
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virtual
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~Framebuffer() = default;
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[[nodiscard]]
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unsigned int index() const
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{
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return p_index;
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}
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void bind()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, p_index);
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p_binded = true;
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}
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void unbind()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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p_binded = false;
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}
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bool binded() const
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{
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return p_binded;
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}
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void attach(const Texture& texture)
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{
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if (!binded() && valid())
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std::runtime_error("Framebuffer not binded or invalid");
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if (!texture.valid())
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std::runtime_error("Texture is not valid");
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p_texture = texture;
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p_texture.bind();
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, p_texture.index(), 0);
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p_texture.unbind();
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}
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void attach(const Renderbuffer& renderbuffer)
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{
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if (!binded() && valid())
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std::runtime_error("Framebuffer not binded or invalid");
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if (!renderbuffer.valid())
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std::runtime_error("Renderbuffer is not valid");
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p_renderbuffer = renderbuffer;
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p_renderbuffer.bind();
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p_renderbuffer.storage(p_texture.width(), p_texture.height());
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, p_renderbuffer.index());
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if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
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throw std::runtime_error("Framebuffer is not complete");
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p_renderbuffer.unbind();
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}
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void create()
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{
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glGenFramebuffers(1, &p_index);
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bind();
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if (!p_texture.valid())
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p_texture.create();
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attach(p_texture);
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if (!p_renderbuffer.valid())
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p_renderbuffer.create();
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attach(p_renderbuffer);
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unbind();
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}
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void rescale(int width, int height)
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{
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p_texture.bind();
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p_texture.rescale(width, height);
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p_renderbuffer.bind();
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p_renderbuffer.storage(p_texture.width(), p_texture.height());
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p_texture.unbind();
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p_renderbuffer.unbind();
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}
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void destroy()
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{
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p_texture.destroy();
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p_renderbuffer.destroy();
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glDeleteFramebuffers(1, &p_index);
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}
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bool valid() const
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{
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return p_index != 0;
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}
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};
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} |