testdrawchessboard.c: draw a diagonal line for visually checking highdpi functionality
Also enable dpi awareness
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@ -47,6 +47,12 @@ void DrawChessBoard()
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rect.y = (float)(row * rect.h);
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x = x + 2;
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SDL_RenderFillRect(renderer, &rect);
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/* Draw a red diagonal line through the upper left rectangle */
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if (column == 0 && row == 0) {
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SDL_SetRenderDrawColor(renderer, 0xFF, 0, 0, 0xFF);
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SDL_RenderLine(renderer, 0, 0, rect.w, rect.h);
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}
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}
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}
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}
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@ -97,6 +103,9 @@ int main(int argc, char *argv[])
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/* Enable standard application logging */
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SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
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/* Enable highdpi scaling on Windows */
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SDL_SetHint(SDL_HINT_WINDOWS_DPI_SCALING, "1");
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/* Initialize SDL */
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if (SDL_Init(SDL_INIT_VIDEO) != 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_Init fail : %s\n", SDL_GetError());
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@ -104,7 +113,7 @@ int main(int argc, char *argv[])
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}
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/* Create window and renderer for given surface */
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window = SDL_CreateWindow("Chess Board", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_RESIZABLE);
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window = SDL_CreateWindow("Chess Board", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
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if (window == NULL) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Window creation fail : %s\n", SDL_GetError());
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return 1;
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