69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
//
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// viewporteffect.h
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//
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// Copyright © 2020 Celestia Development Team. All rights reserved.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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#pragma once
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#include <string>
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#include <celengine/glsupport.h>
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#include <celengine/vertexobject.h>
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class FramebufferObject;
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class Renderer;
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class CelestiaGLProgram;
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class WarpMesh;
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class ViewportEffect
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{
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public:
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virtual ~ViewportEffect() = default;
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virtual bool preprocess(Renderer*, FramebufferObject*);
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virtual bool prerender(Renderer*, FramebufferObject*);
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virtual bool render(Renderer*, FramebufferObject*, int width, int height) = 0;
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virtual bool distortXY(float& x, float& y);
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private:
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GLint oldFboId;
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};
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class PassthroughViewportEffect : public ViewportEffect
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{
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public:
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PassthroughViewportEffect();
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~PassthroughViewportEffect() override = default;
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bool prerender(Renderer*, FramebufferObject* fbo) override;
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bool render(Renderer*, FramebufferObject*, int width, int height) override;
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private:
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celgl::VertexObject vo;
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void initializeVO(celgl::VertexObject&);
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void draw(celgl::VertexObject&);
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};
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class WarpMeshViewportEffect : public ViewportEffect
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{
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public:
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WarpMeshViewportEffect(WarpMesh *mesh);
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~WarpMeshViewportEffect() override = default;
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bool prerender(Renderer*, FramebufferObject* fbo) override;
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bool render(Renderer*, FramebufferObject*, int width, int height) override;
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bool distortXY(float& x, float& y) override;
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private:
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celgl::VertexObject vo;
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WarpMesh *mesh;
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void initializeVO(celgl::VertexObject&);
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void draw(celgl::VertexObject&);
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};
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