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Add full high DPI information to SDL_DisplayMode

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SDL_DisplayMode now includes the pixel size, the screen size and the relationship between the two. For example, a 4K display at 200% scale could have a pixel size of 3840x2160, a screen size of 1920x1080, and a display scale of 2.0.
This commit is contained in:
Sam Lantinga 2023-01-27 10:46:51 -08:00
parent b23d20cd4d
commit 24fec13ac1
31 changed files with 370 additions and 345 deletions
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10
src/test/SDL_test_common.c
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@ -1130,7 +1130,7 @@ SDLTest_CommonInit(SDLTest_CommonState *state)
SDL_GetMasksForPixelFormatEnum(mode.format, &bpp, &Rmask, &Gmask,
&Bmask, &Amask);
SDL_Log(" Current mode: %dx%d@%gHz, %d%% scale, %d bits-per-pixel (%s)\n",
mode.w, mode.h, mode.refresh_rate, (int)(mode.display_scale * 100.0f), bpp,
mode.pixel_w, mode.pixel_h, mode.refresh_rate, (int)(mode.display_scale * 100.0f), bpp,
SDL_GetPixelFormatName(mode.format));
if (Rmask || Gmask || Bmask) {
SDL_Log(" Red Mask = 0x%.8" SDL_PRIx32 "\n", Rmask);
@ -1152,7 +1152,7 @@ SDLTest_CommonInit(SDLTest_CommonState *state)
SDL_GetMasksForPixelFormatEnum(mode.format, &bpp, &Rmask,
&Gmask, &Bmask, &Amask);
SDL_Log(" Mode %d: %dx%d@%gHz, %d%% scale, %d bits-per-pixel (%s)\n",
j, mode.w, mode.h, mode.refresh_rate, (int)(mode.display_scale * 100.0f), bpp,
j, mode.pixel_w, mode.pixel_h, mode.refresh_rate, (int)(mode.display_scale * 100.0f), bpp,
SDL_GetPixelFormatName(mode.format));
if (Rmask || Gmask || Bmask) {
SDL_Log(" Red Mask = 0x%.8" SDL_PRIx32 "\n",
@ -2246,7 +2246,7 @@ void SDLTest_CommonDrawWindowInfo(SDL_Renderer *renderer, SDL_Window *window, fl
if (0 == SDL_GetWindowDisplayMode(window, &mode)) {
(void)SDL_snprintf(text, sizeof text, "SDL_GetWindowDisplayMode: %dx%d@%gHz %d%% scale, (%s)",
mode.w, mode.h, mode.refresh_rate, (int)(mode.display_scale * 100.0f), SDL_GetPixelFormatName(mode.format));
mode.pixel_w, mode.pixel_h, mode.refresh_rate, (int)(mode.display_scale * 100.0f), SDL_GetPixelFormatName(mode.format));
SDLTest_DrawString(renderer, 0.0f, textY, text);
textY += lineHeight;
}
@ -2276,14 +2276,14 @@ void SDLTest_CommonDrawWindowInfo(SDL_Renderer *renderer, SDL_Window *window, fl
if (0 == SDL_GetCurrentDisplayMode(windowDisplayIndex, &mode)) {
(void)SDL_snprintf(text, sizeof text, "SDL_GetCurrentDisplayMode: %dx%d@%gHz %d%% scale, (%s)",
mode.w, mode.h, mode.refresh_rate, (int)(mode.display_scale * 100.0f), SDL_GetPixelFormatName(mode.format));
mode.pixel_w, mode.pixel_h, mode.refresh_rate, (int)(mode.display_scale * 100.0f), SDL_GetPixelFormatName(mode.format));
SDLTest_DrawString(renderer, 0.0f, textY, text);
textY += lineHeight;
}
if (0 == SDL_GetDesktopDisplayMode(windowDisplayIndex, &mode)) {
(void)SDL_snprintf(text, sizeof text, "SDL_GetDesktopDisplayMode: %dx%d@%gHz %d%% scale, (%s)",
mode.w, mode.h, mode.refresh_rate, (int)(mode.display_scale * 100.0f), SDL_GetPixelFormatName(mode.format));
mode.pixel_w, mode.pixel_h, mode.refresh_rate, (int)(mode.display_scale * 100.0f), SDL_GetPixelFormatName(mode.format));
SDLTest_DrawString(renderer, 0.0f, textY, text);
textY += lineHeight;
}