video.h

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#pragma once
 
#include <vector>
#ifdef _WIN32
#include <windows.h>
#endif
#include <glad/gl.h>
#include <GL/glu.h>
#ifdef _WIN32
#include <glad/wgl.h>
#endif
 
struct VideoCaps
{
    int colour;          
    int alpha;           
    int zBuffer;         
    int accum;           
    int stencil;         
    int aaSamples;       
    int hwAcc;           
    GLboolean sampleBuffer; 
    GLboolean doubleBuffer; 
};
 
class VideoSettings
{
public:
    VideoSettings();
    ~VideoSettings();
 
    // Functions
    bool Init();
    void InitGL();
    void EnumDisplayModes();
 
    bool GetCompatibleWinMode(VideoCaps caps);
    bool GetAvailableMode();
    void ResizeGLScene(int width, int height);
    void SetMode();
    void SetCurrent();
    void SwapBuffers();
    void Release();
 
#ifdef _WINDOWS
    HWND GetHandle() { return hWnd; }
    void SetHandle(HWND hwnd, int bpp);
 
    // Resources
    HDC hDC   = nullptr;
    HWND hWnd = nullptr;
    HGLRC hRC = nullptr;
#endif
 
    bool init    = false;
    bool render  = false;
    bool refresh = false;
 
    // OpenGL Settings
    int xRes = 0;
    int yRes = 0;
    int pixelFormat = 0;
    float fov = 45.0f;
    int desktopBPP = 0;
 
    // Card capabilities
    std::vector<VideoCaps> capsList;
    VideoCaps curCap{};
    int capIndex = 0;
 
    int AnisofilterLevel = 0;
    int numTextureUnits  = 0;
 
    // Card Info
    char* vendor   = nullptr;
    char* version  = nullptr;
    char* renderer = nullptr;
 
    // Is there hardware support?
    bool hasHardware = false;
    bool secondPass  = false;
 
    // Video card support for OGL Extensions
    bool supportFragProg            = false;
    bool supportVertexProg          = false;
    bool supportGLSL                = false;
    bool supportCompression         = false;
    bool supportMultiTex            = false;
    bool supportDrawRangeElements   = false;
    bool supportPointSprites        = false;
    bool supportShaders             = false;
    bool supportAntiAlias           = false;
    bool supportVBO                 = false;
    bool supportPBO                 = false;
    bool supportFBO                 = false;
    bool supportNPOT                = false;
    bool supportOGL20               = false;
    bool supportWGLPixelFormat      = false;
    bool supportTexRects            = false;
 
    bool useMasking    = false;
    bool useEnvMapping = true;
};
 
extern VideoSettings video;