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fix hidpi?

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This commit is contained in:
Romain Vimont 2020-04-19 12:54:51 +02:00
parent ce6ee99f06
commit 3a28b9e954
1 changed files with 8 additions and 3 deletions
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11
app/src/screen.c
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@ -596,9 +596,14 @@ screen_convert_to_frame_coords(struct screen *screen, int32_t x, int32_t y) {
int32_t w = screen->content_size.width;
int32_t h = screen->content_size.height;
// scale
x = (x - screen->rect.x) * w / screen->rect.w;
y = (y - screen->rect.y) * h / screen->rect.h;
// take the HiDPI scaling (dw/ww and dh/wh) into account
int ww, wh, dw, dh;
SDL_GetWindowSize(screen->window, &ww, &wh);
SDL_GL_GetDrawableSize(screen->window, &dw, &dh);
// scale (64 bits for intermediate multiplications)
x = (int64_t) (x - screen->rect.x) * w * dw / (screen->rect.w * ww);
y = (int64_t) (y - screen->rect.y) * h * dh / (screen->rect.h * wh);
// rotate
struct point result;