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Detects Retina displays on macOS for proper scaling.

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This commit is contained in:
Fellippe Heitor 2020-01-06 12:09:15 -03:00
parent 43611bf60e
commit 0f1f63eda8
1 changed files with 13 additions and 2 deletions
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15
internal/c/libqb/gui.cpp
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@ -525,7 +525,18 @@ void sub__glrender(int32 method){
if (render_state.dest_handle==0){
static int32 dst_w,dst_h;
static int32 dst_w,dst_h;
static int32 scale_factor=0;
#ifdef QB64_MACOSX
if (scale_factor==0) {
scale_factor=1;
if (system("system_profiler SPDisplaysDataType | grep Retina")==0) scale_factor=2;
}
#else
scale_factor=1;
#endif
dst_w=environment__window_width;
dst_h=environment__window_height;
@ -539,7 +550,7 @@ void sub__glrender(int32 method){
glLoadIdentity();
glScalef(1, -1, 1);//flip vertically
glTranslatef(0, -dst_h, 0);//move to new vertical position
glViewport(0,0,dst_w,dst_h);
glViewport(0,0,dst_w * scale_factor,dst_h * scale_factor);
}else{