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96 lines
2.3 KiB
96 lines
2.3 KiB
#pragma once |
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#include <cstdint> |
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#include "all.h" |
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#include <SDL.h> |
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#include <type_traits> |
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namespace dvl { |
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extern int refreshDelay; // Screen refresh rate in nanoseconds |
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extern SDL_Window *window; |
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extern SDL_Renderer *renderer; |
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extern SDL_Texture *texture; |
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extern SDL_Palette *palette; |
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extern SDL_Surface *pal_surface; |
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extern unsigned int pal_surface_palette_version; |
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#ifdef USE_SDL1 |
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void SetVideoMode(int width, int height, int bpp, uint32_t flags); |
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void SetVideoModeToPrimary(bool fullscreen, int width, int height); |
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#endif |
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bool IsFullScreen(); |
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// Returns: |
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// SDL1: Video surface. |
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// SDL2, no upscale: Window surface. |
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// SDL2, upscale: Renderer texture surface. |
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SDL_Surface *GetOutputSurface(); |
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// Whether the output surface requires software scaling. |
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// Always returns false on SDL2. |
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bool OutputRequiresScaling(); |
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// Scales rect if necessary. |
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void ScaleOutputRect(SDL_Rect *rect); |
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// If the output requires software scaling, replaces the given surface with a scaled one. |
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void ScaleSurfaceToOutput(SDL_Surface **surface); |
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// Convert from output coordinates to logical (resolution-independent) coordinates. |
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template < |
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typename T, |
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typename = typename std::enable_if<std::is_arithmetic<T>::value, T>::type> |
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void OutputToLogical(T *x, T *y) |
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{ |
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#ifndef USE_SDL1 |
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if (!renderer) |
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return; |
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float scaleX; |
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SDL_RenderGetScale(renderer, &scaleX, NULL); |
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*x /= scaleX; |
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*y /= scaleX; |
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SDL_Rect view; |
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SDL_RenderGetViewport(renderer, &view); |
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*x -= view.x; |
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*y -= view.y; |
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#else |
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if (!OutputRequiresScaling()) |
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return; |
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const SDL_Surface *surface = GetOutputSurface(); |
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*x = *x * gnScreenWidth / surface->w; |
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*y = *y * gnScreenHeight / surface->h; |
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#endif |
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} |
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template < |
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typename T, |
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typename = typename std::enable_if<std::is_arithmetic<T>::value, T>::type> |
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void LogicalToOutput(T *x, T *y) |
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{ |
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#ifndef USE_SDL1 |
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if (!renderer) |
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return; |
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SDL_Rect view; |
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SDL_RenderGetViewport(renderer, &view); |
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*x += view.x; |
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*y += view.y; |
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float scaleX; |
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SDL_RenderGetScale(renderer, &scaleX, NULL); |
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*x *= scaleX; |
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*y *= scaleX; |
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#else |
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if (!OutputRequiresScaling()) |
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return; |
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const SDL_Surface *surface = GetOutputSurface(); |
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*x = *x * surface->w / gnScreenWidth; |
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*y = *y * surface->h / gnScreenHeight; |
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#endif |
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} |
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} // namespace dvl
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