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OpenMW is an open implementation of the Morrowind engine
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142#include "sdlvideowrapper.hpp"
#include <components/debug/debuglog.hpp>#include <components/sdlutil/sdlgraphicswindow.hpp>#include <components/settings/settings.hpp>
#include <osgViewer/Viewer>
#include <SDL_video.h>
namespace SDLUtil{
VideoWrapper::VideoWrapper(SDL_Window* window, osg::ref_ptr<osgViewer::Viewer> viewer) : mWindow(window) , mViewer(std::move(viewer)) , mGamma(1.f) , mContrast(1.f) , mHasSetGammaContrast(false) { SDL_GetWindowGammaRamp(mWindow, mOldSystemGammaRamp, &mOldSystemGammaRamp[256], &mOldSystemGammaRamp[512]); }
VideoWrapper::~VideoWrapper() { // Only exclusive fullscreen needs an early display-mode reset. Leaving desktop fullscreen here // can bring a background window to the foreground on macOS; let window destruction handle it. const Uint32 fullscreenFlags = SDL_GetWindowFlags(mWindow) & SDL_WINDOW_FULLSCREEN_DESKTOP; if (fullscreenFlags == SDL_WINDOW_FULLSCREEN) SDL_SetWindowFullscreen(mWindow, 0);
// If user hasn't touched the defaults no need to restore if (mHasSetGammaContrast) SDL_SetWindowGammaRamp(mWindow, mOldSystemGammaRamp, &mOldSystemGammaRamp[256], &mOldSystemGammaRamp[512]); }
void VideoWrapper::setSyncToVBlank(VSyncMode vsyncMode) { osgViewer::Viewer::Windows windows; mViewer->getWindows(windows); mViewer->stopThreading(); for (osgViewer::Viewer::Windows::iterator it = windows.begin(); it != windows.end(); ++it) { osgViewer::GraphicsWindow* win = *it; if (GraphicsWindowSDL2* sdl2win = dynamic_cast<GraphicsWindowSDL2*>(win)) sdl2win->setSyncToVBlank(vsyncMode); else win->setSyncToVBlank(vsyncMode != VSyncMode::Disabled); } mViewer->startThreading(); }
void VideoWrapper::setGammaContrast(float gamma, float contrast) { if (gamma == mGamma && contrast == mContrast) return;
mGamma = gamma; mContrast = contrast;
mHasSetGammaContrast = true;
Uint16 red[256], green[256], blue[256]; for (int i = 0; i < 256; i++) { float k = i / 256.0f; k = (k - 0.5f) * contrast + 0.5f; k = pow(k, 1.f / gamma); k *= 256; float value = k * 256; if (value > 65535) value = 65535; else if (value < 0) value = 0;
red[i] = green[i] = blue[i] = static_cast<Uint16>(value); } if (SDL_SetWindowGammaRamp(mWindow, red, green, blue) < 0) Log(Debug::Warning) << "Couldn't set gamma: " << SDL_GetError(); }
void VideoWrapper::setVideoMode(int width, int height, Settings::WindowMode windowMode, bool windowBorder) { SDL_SetWindowFullscreen(mWindow, 0);
if (SDL_GetWindowFlags(mWindow) & SDL_WINDOW_MAXIMIZED) SDL_RestoreWindow(mWindow);
int w, h; SDL_GetWindowSize(mWindow, &w, &h); int dw, dh; SDL_GL_GetDrawableSize(mWindow, &dw, &dh);
if (windowMode == Settings::WindowMode::Fullscreen || windowMode == Settings::WindowMode::WindowedFullscreen) { SDL_DisplayMode mode; SDL_GetWindowDisplayMode(mWindow, &mode); mode.w = width / (dw / w); mode.h = height / (dh / h); SDL_SetWindowDisplayMode(mWindow, &mode); SDL_SetWindowFullscreen(mWindow, windowMode == Settings::WindowMode::Fullscreen ? SDL_WINDOW_FULLSCREEN : SDL_WINDOW_FULLSCREEN_DESKTOP); } else { SDL_SetWindowSize(mWindow, width / (dw / w), height / (dh / h)); SDL_SetWindowBordered(mWindow, windowBorder ? SDL_TRUE : SDL_FALSE);
centerWindow(); } }
void VideoWrapper::centerWindow() { // Resize breaks the sdl window in some cases; see issue: #5539 SDL_Rect rect{}; int x = 0; int y = 0; int w = 0; int h = 0; auto index = SDL_GetWindowDisplayIndex(mWindow); SDL_GetDisplayBounds(index, &rect); SDL_GetWindowSize(mWindow, &w, &h);
x = rect.x; y = rect.y;
// Center dimensions that do not fill the screen if (w < rect.w) { x = rect.x + rect.w / 2 - w / 2; } if (h < rect.h) { y = rect.y + rect.h / 2 - h / 2; }
SDL_SetWindowPosition(mWindow, x, y); }
}