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opengls.h

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00001 /* ResidualVM - A 3D game interpreter
00002  *
00003  * ResidualVM is the legal property of its developers, whose names
00004  * are too numerous to list here. Please refer to the AUTHORS
00005  * file distributed with this source distribution.
00006  *
00007  * This program is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU General Public License
00009  * as published by the Free Software Foundation; either version 2
00010  * of the License, or (at your option) any later version.
00011  *
00012  * This program is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00020  *
00021  */
00022 
00023 #ifndef STARK_GFX_OPENGLS_H
00024 #define STARK_GFX_OPENGLS_H
00025 
00026 #include "common/system.h"
00027 
00028 #if defined(USE_GLES2) || defined(USE_OPENGL_SHADERS)
00029 
00030 #include "engines/stark/gfx/driver.h"
00031 
00032 #include "graphics/opengl/system_headers.h"
00033 
00034 namespace OpenGL {
00035 class Shader;
00036 }
00037 
00038 namespace Stark {
00039 namespace Gfx {
00040 
00041 class OpenGLSDriver : public Driver {
00042 public:
00043     OpenGLSDriver();
00044     ~OpenGLSDriver();
00045 
00046     void init() override;
00047 
00048     void setScreenViewport(bool noScaling) override;
00049     void setViewport(const Common::Rect &rect) override;
00050 
00051     void clearScreen() override;
00052     void flipBuffer() override;
00053 
00054     Texture *createTexture(const Graphics::Surface *surface = nullptr, const byte *palette = nullptr) override;
00055     VisualActor *createActorRenderer() override;
00056     VisualProp *createPropRenderer() override;
00057     SurfaceRenderer *createSurfaceRenderer() override;
00058     FadeRenderer *createFadeRenderer() override;
00059 
00060     OpenGL::Shader *createActorShaderInstance();
00061     OpenGL::Shader *createSurfaceShaderInstance();
00062     OpenGL::Shader *createFadeShaderInstance();
00063     OpenGL::Shader *createShadowShaderInstance();
00064 
00065     void start2DMode();
00066     void end2DMode();
00067     void set3DMode() override;
00068 
00069     Common::Rect getViewport() const;
00070     Common::Rect getUnscaledViewport() const;
00071 
00072     Graphics::Surface *getViewportScreenshot() const override;
00073 
00074 private:
00075     Common::Rect _viewport;
00076     Common::Rect _unscaledViewport;
00077 
00078     OpenGL::Shader *_surfaceShader;
00079     OpenGL::Shader *_actorShader;
00080     OpenGL::Shader *_fadeShader;
00081     OpenGL::Shader *_shadowShader;
00082     GLuint _surfaceVBO;
00083     GLuint _fadeVBO;
00084 };
00085 
00086 } // End of namespace Gfx
00087 } // End of namespace Stark
00088 
00089 #endif // defined(USE_GLES2) || defined(USE_OPENGL_SHADERS)
00090 
00091 #endif // STARK_GFX_OPENGLS_H


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