graphicsmanager.h

Go to the documentation of this file.

/*
 * The ManaPlus Client
 * Copyright (C) 2012-2019 The ManaPlus Developers
 * Copyright (C) 2019-2021 Andrei Karas
 *
 * This file is part of The ManaPlus Client.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef GRAPHICSMANAGER_H
#define GRAPHICSMANAGER_H
 
#include "localconsts.h"
 
#ifdef USE_OPENGL
#ifdef ANDROID
#include <GLES/gl.h>
#else // ANDROID
#ifndef USE_SDL2
#define GL_GLEXT_PROTOTYPES 1
#endif // USE_SDL2
#ifdef HAVE_GLEXT
#define NO_SDL_GLEXT
#endif // HAVE_GLEXT
PRAGMA48(GCC diagnostic push)
PRAGMA48(GCC diagnostic ignored "-Wshadow")
// ignore -Wredundant-decls for SDL 1.2
PRAGMA45(GCC diagnostic push)
PRAGMA45(GCC diagnostic ignored "-Wredundant-decls")
#include <SDL_opengl.h>
PRAGMA45(GCC diagnostic pop)
PRAGMA48(GCC diagnostic pop)
#ifdef HAVE_GLEXT
PRAGMA45(GCC diagnostic push)
PRAGMA45(GCC diagnostic ignored "-Wredundant-decls")
#include <GL/glext.h>
PRAGMA45(GCC diagnostic pop)
#endif // HAVE_GLEXT
// hack to hide warnings
#undef GL_GLEXT_VERSION
#undef GL_GLEXT_PROTOTYPES
#endif // ANDROID
 
#endif // USE_OPENGL
 
#include "sdlshared.h"
 
#include "utils/stringvector.h"
 
#include <set>
 
class TestMain;
 
struct FBOInfo;
#ifdef USE_SDL2
struct SDL_Renderer;
#endif // USE_SDL2
struct SDL_Window;
 
class GraphicsManager final
{
 public:
 GraphicsManager();
 
 A_DELETE_COPY(GraphicsManager)
 
 ~GraphicsManager();
 
 void createRenderers();
 
 static void deleteRenderers();
 
 void initGraphics();
 
 static void setVideoMode();
 
 static SDL_Window *createWindow(const int w, const int h,
 const int bpp, const int flags);
 
#ifdef USE_SDL2
 SDL_Renderer *createRenderer(SDL_Window *const window,
 const int flags);
#endif // USE_SDL2
 
 bool getAllVideoModes(StringVect &modeList);
 
 void detectPixelSize();
 
 std::string getDensityString() const;
 
 int getDensity() const
 { return mDensity; }
 
#ifdef USE_OPENGL
 TestMain *startDetection() A_WARN_UNUSED;
 
 int detectGraphics() A_WARN_UNUSED;
 
 bool supportExtension(const std::string &ext) const A_WARN_UNUSED;
 
 static void updateTextureFormat();
 
 void updateTextureCompressionFormat() const;
 
 bool checkGLVersion(const int major, const int minor)
 const A_WARN_UNUSED;
 
 bool checkGLesVersion(const int major, const int minor)
 const A_WARN_UNUSED;
 
 bool checkSLVersion(const int major, const int minor)
 const A_WARN_UNUSED;
 
 bool checkPlatformVersion(const int major, const int minor)
 const A_WARN_UNUSED;
 
 static void createFBO(const int width, const int height,
 FBOInfo *const fbo);
 
 static void deleteFBO(FBOInfo *const fbo);
 
 void initOpenGLFunctions();
 
 void updateExtensions();
 
 void updatePlanformExtensions();
 
 void initOpenGL();
 
 void updateLimits();
 
 int getMaxVertices() const noexcept2 A_WARN_UNUSED
 { return mMaxVertices; }
 
 bool getUseAtlases() const noexcept2 A_WARN_UNUSED
 { return mUseAtlases; }
 
 void logVersion() const;
 
 void setGLVersion();
 
 static std::string getGLString(const int num) A_WARN_UNUSED;
 
 static void logString(const char *const format,
 const int num) A_NONNULL(1);
 
 void detectVideoSettings();
 
 void createTextureSampler();
 
 bool isUseTextureSampler() const noexcept2 A_WARN_UNUSED
 { return mUseTextureSampler; }
 
 static GLenum getLastError();
 
 static std::string errorToString(const GLenum error) A_WARN_UNUSED;
 
 static void logError();
 
 void updateDebugLog() const;
 
 std::string getGLVersion() const
 { return mGlVersionString; }
 
 static GLenum getLastErrorCached()
 { return mLastError; }
 
 constexpr2 static void resetCachedError() noexcept2
 { mLastError = GL_NO_ERROR; }
#endif // USE_OPENGL
 
 private:
 std::set<std::string> mExtensions;
 
 std::set<std::string> mPlatformExtensions;
 
 std::string mGlVersionString;
 
 std::string mGlVendor;
 
 std::string mGlRenderer;
 
 std::string mGlShaderVersionString;
#ifdef USE_OPENGL
 static GLenum mLastError;
#endif // USE_OPENGL
 
 int mMinor;
 
 int mMajor;
 
 int mSLMinor;
 
 int mSLMajor;
 
 int mPlatformMinor;
 
 int mPlatformMajor;
 
 int mMaxVertices;
 
 int mMaxFboSize;
 
 uint32_t mMaxWidth;
 
 uint32_t mMaxHeight;
 
 uint32_t mWidthMM;
 
 uint32_t mHeightMM;
 
 int32_t mDensity;
 
#ifdef USE_OPENGL
 bool mUseTextureSampler;
 
 GLuint mTextureSampler;
 
 int mSupportDebug;
 
 bool mSupportModernOpengl;
 
 bool mGles;
#endif // USE_OPENGL
 
 bool mUseAtlases;
};
 
extern GraphicsManager graphicsManager;
 
#endif // GRAPHICSMANAGER_H