82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
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/**
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@file
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@author Dane Johnson <dane@danejohnson.org>
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@section LICENSE
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Couch Copyright (C) 2021 Dane Johnson
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This program comes with ABSOLUTELY NO WARRANTY; without event the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for details at
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https://www.gnu.org/licenses/gpl-3.0.html
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This is free software, and you are welcome to redistribute it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3 of the License,
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or (at your option) any later version.
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@section DESCRIPTION
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Framebuffers are essentially just things that can be drawn to. They have
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a number of settings that are set via stateful calls to OpenGL, so they
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are wrapped here so they can be saved and restored in a stateless fashion.
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*/
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#ifndef FRAMEBUFFER_H
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#define FRAMEBUFFER_H
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#include <vector>
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#include "types.h"
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class Framebuffer {
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public:
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Framebuffer();
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/**
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If the frame buffer has already been initialized, you can pass it
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in with this constructor
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@param fbo the frame buffer object handle.
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*/
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Framebuffer(Id fbo);
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/**
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Apply the configuration for this framebuffer to the OpenGL state.
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*/
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~Framebuffer();
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void Enable();
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/**
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Clear out this framebuffer.
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*/
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void Clear();
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/**
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Bind the texture without applying configuration.
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*/
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void Bind();
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/**
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What clear color to draw to this frame buffer
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*/
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Vector3 clearColor = Vector3(0.0f, 0.0f, 1.0f);
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/**
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What bit(s) to clear in this buffer.
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*/
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int clearFlags = GL_COLOR_BUFFER_BIT;
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/**
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Should we enable depth testing?
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*/
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bool depthTest = false;
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private:
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Id fbo;
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};
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class FramebufferStack {
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public:
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void Save(Framebuffer *buffer);
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void Restore();
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Framebuffer *curr = new Framebuffer(0); // Start with the default framebuffer
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static FramebufferStack *GetStack();
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private:
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std::vector<Framebuffer *> stack;
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};
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#endif /* FRAMEBUFFER_H */
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