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factor calculation for upscaled_texture from Crispy Doom (#1019)

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* factor calculation for upscaled_texture from Crispy Doom

* use SDL_GetDesktopDisplayMode istead of SDL_GetRendererOutputSize
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Roman Fomin 2023-04-27 04:27:04 +07:00 committed by GitHub
parent 90c3df526c
commit 8a0bb50eca
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 59 additions and 23 deletions
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82
src/i_video.c
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@ -1423,6 +1423,64 @@ void I_GetScreenDimensions(void)
WIDESCREENDELTA = (SCREENWIDTH - NONWIDEWIDTH) / 2;
}
static void CreateUpscaledTexture(int v_w, int v_h)
{
SDL_RendererInfo info;
SDL_DisplayMode mode;
int w_upscale, h_upscale;
SDL_GetRendererInfo(renderer, &info);
if (info.flags & SDL_RENDERER_SOFTWARE)
{
return;
}
SDL_GetDesktopDisplayMode(video_display, &mode);
// Pick texture size the next integer multiple of the screen dimensions.
// If one screen dimension matches an integer multiple of the original
// resolution, there is no need to overscale in this direction.
w_upscale = (mode.w + v_w - 1) / v_w;
h_upscale = (mode.h + v_h - 1) / v_h;
while (w_upscale * v_w > info.max_texture_width)
{
--w_upscale;
}
while (h_upscale * v_h > info.max_texture_height)
{
--h_upscale;
}
if (w_upscale < 1)
{
w_upscale = 1;
}
if (h_upscale < 1)
{
h_upscale = 1;
}
if (texture_upscaled != NULL)
{
SDL_DestroyTexture(texture_upscaled);
}
// Set the scaling quality for rendering the upscaled texture
// to "linear", which looks much softer and smoother than "nearest"
// but does a better job at downscaling from the upscaled texture to
// screen.
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
texture_upscaled = SDL_CreateTexture(renderer,
SDL_GetWindowPixelFormat(screen),
SDL_TEXTUREACCESS_TARGET,
w_upscale* v_w, h_upscale * v_h);
}
//
// killough 11/98: New routine, for setting hires and page flipping
//
@ -1757,29 +1815,7 @@ static void I_InitGraphicsMode(void)
if (bilinear_sharpening)
{
SDL_RendererInfo info;
SDL_GetRendererInfo(renderer, &info);
if (!(info.flags & SDL_RENDERER_SOFTWARE))
{
if (texture_upscaled != NULL)
{
SDL_DestroyTexture(texture_upscaled);
}
// Set the scaling quality for rendering the upscaled texture
// to "linear", which looks much softer and smoother than "nearest"
// but does a better job at downscaling from the upscaled texture to
// screen.
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
texture_upscaled = SDL_CreateTexture(renderer,
pixel_format,
SDL_TEXTUREACCESS_TARGET,
v_w * 2, v_h * 2);
}
CreateUpscaledTexture(v_w, v_h);
}
UpdateGrab();