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minor optimization to the blitting code

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This commit is contained in:
Fabian Greffrath 2020-03-12 14:22:38 +01:00
parent 9fe83a7cbe
commit 243519bd77
1 changed files with 11 additions and 6 deletions
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17
Source/i_video.c
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@ -47,14 +47,15 @@
#include "icon.c" #include "icon.c"
SDL_Surface *sdlscreen; static SDL_Surface *sdlscreen;
// [FG] rendering window, renderer, intermediate ARGB frame buffer and texture // [FG] rendering window, renderer, intermediate ARGB frame buffer and texture
SDL_Window *screen; static SDL_Window *screen;
SDL_Renderer *renderer; static SDL_Renderer *renderer;
SDL_Surface *argbbuffer; static SDL_Surface *argbbuffer;
SDL_Texture *texture; static SDL_Texture *texture;
static SDL_Rect blit_rect = {0};
// [FG] window size when returning from fullscreen mode // [FG] window size when returning from fullscreen mode
static int window_width, window_height; static int window_width, window_height;
@ -727,7 +728,7 @@ void I_FinishUpdate(void)
I_DrawDiskIcon(); I_DrawDiskIcon();
SDL_BlitSurface(sdlscreen, NULL, argbbuffer, NULL); SDL_LowerBlit(sdlscreen, &blit_rect, argbbuffer, &blit_rect);
SDL_UpdateTexture(texture, NULL, argbbuffer->pixels, argbbuffer->pitch); SDL_UpdateTexture(texture, NULL, argbbuffer->pixels, argbbuffer->pitch);
@ -921,6 +922,9 @@ static void I_InitGraphicsMode(void)
v_h = SCREENHEIGHT*2; v_h = SCREENHEIGHT*2;
} }
blit_rect.w = v_w;
blit_rect.h = v_h;
// haleyjd 10/09/05: from Chocolate DOOM // haleyjd 10/09/05: from Chocolate DOOM
// mouse grabbing // mouse grabbing
if(M_CheckParm("-grabmouse")) if(M_CheckParm("-grabmouse"))
@ -1071,6 +1075,7 @@ static void I_InitGraphicsMode(void)
// [FG] screen buffer // [FG] screen buffer
screens[0] = sdlscreen->pixels; screens[0] = sdlscreen->pixels;
memset(screens[0], 0, v_w * v_h * sizeof(*screens[0]));
} }
// [FG] create intermediate ARGB frame buffer // [FG] create intermediate ARGB frame buffer