57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef ALCACHOFA_GRAPHICS_OPENGL_BASE_H
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#define ALCACHOFA_GRAPHICS_OPENGL_BASE_H
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// This file shall not use any OpenGL API surface or include headers related to it
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#include "alcachofa/graphics.h"
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namespace Alcachofa {
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class OpenGLRendererBase : public virtual IRenderer {
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public:
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OpenGLRendererBase(Common::Point resolution);
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bool hasOutput() const override;
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protected:
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virtual void setViewportInner(int x, int y, int width, int height) = 0;
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virtual void setMatrices(bool flipped) = 0;
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void resetState();
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void setViewportToScreen();
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void setViewportToRect(int16 outputWidth, int16 outputHeight);
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void getQuadPositions(Math::Vector2d topLeft, Math::Vector2d size, Math::Angle rotation, Math::Vector2d positions[]) const;
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void getQuadTexCoords(Math::Vector2d texMin, Math::Vector2d texMax, Math::Vector2d texCoords[]) const;
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Common::Point _resolution, _outputSize;
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Graphics::Surface *_currentOutput = nullptr;
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BlendMode _currentBlendMode = (BlendMode)-1;
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float _currentLodBias = 0.0f;
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bool _isFirstDrawCommand = false;
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};
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}
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#endif // ALCACHOFA_GRAPHICS_OPENGL_BASE_H
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