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testdrawchessboard.c: draw a diagonal line for visually checking highdpi functionality 

Also enable dpi awareness
This commit is contained in:
Eric Wasylishen 2023-01-12 00:17:58 -07:00 committed by Sam Lantinga
parent 67c91353e0
commit 08963dc183
1 changed files with 10 additions and 1 deletions
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11
test/testdrawchessboard.c
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@ -47,6 +47,12 @@ void DrawChessBoard()
rect.y = (float)(row * rect.h); rect.y = (float)(row * rect.h);
x = x + 2; x = x + 2;
SDL_RenderFillRect(renderer, &rect); SDL_RenderFillRect(renderer, &rect);
/* Draw a red diagonal line through the upper left rectangle */
if (column == 0 && row == 0) {
SDL_SetRenderDrawColor(renderer, 0xFF, 0, 0, 0xFF);
SDL_RenderLine(renderer, 0, 0, rect.w, rect.h);
}
} }
} }
} }
@ -97,6 +103,9 @@ int main(int argc, char *argv[])
/* Enable standard application logging */ /* Enable standard application logging */
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO); SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
/* Enable highdpi scaling on Windows */
SDL_SetHint(SDL_HINT_WINDOWS_DPI_SCALING, "1");
/* Initialize SDL */ /* Initialize SDL */
if (SDL_Init(SDL_INIT_VIDEO) != 0) { if (SDL_Init(SDL_INIT_VIDEO) != 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_Init fail : %s\n", SDL_GetError()); SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_Init fail : %s\n", SDL_GetError());
@ -104,7 +113,7 @@ int main(int argc, char *argv[])
} }
/* Create window and renderer for given surface */ /* Create window and renderer for given surface */
window = SDL_CreateWindow("Chess Board", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_RESIZABLE); window = SDL_CreateWindow("Chess Board", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
if (window == NULL) { if (window == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Window creation fail : %s\n", SDL_GetError()); SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Window creation fail : %s\n", SDL_GetError());
return 1; return 1;