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Fixed first drawing of a layer-backed OpenGL window.

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@13087 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Manolo Gouy 2018-10-28 16:22:05 +00:00
parent d666a6f234
commit 2106f867b6
1 changed files with 2 additions and 6 deletions
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8
src/Fl_cocoa.mm
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@ -2161,7 +2161,7 @@ static FLTextInputContext* fltextinputcontext_instance = nil;
FLView implements displayLayer:. Consequently, FLView objects are drawn FLView implements displayLayer:. Consequently, FLView objects are drawn
by the displayLayer: method. An FLView manages also a member variable by the displayLayer: method. An FLView manages also a member variable
CGContextRef layer_gc, a bitmap context the size of the view (double on Retina). CGContextRef layer_gc, a bitmap context the size of the view (double on Retina).
All Quartz drawings go to this bitmap. updateLayer finishes by using an image copy All Quartz drawings go to this bitmap. displayLayer: finishes by using an image copy
of the bitmap as the layer's contents. That step fills the window. of the bitmap as the layer's contents. That step fills the window.
When resized or when the window flips between low/high resolution displays, When resized or when the window flips between low/high resolution displays,
FLView receives the viewFrameDidChange message which deletes the bitmap and zeros layer_gc. FLView receives the viewFrameDidChange message which deletes the bitmap and zeros layer_gc.
@ -2199,11 +2199,7 @@ static CGContextRef prepare_bitmap_for_layer(int w, int h ) {
if (d->wait_for_expose_value) { if (d->wait_for_expose_value) {
// 1st drawing of GL window // 1st drawing of GL window
[self did_view_resolution_change]; [self did_view_resolution_change];
NSRect r = [[self window] frame]; [window->as_gl_window()->context() update]; // GL window is empty without this
r.size.width -= 1;
[[self window] setFrame:r display:NO]; // very dirty but works. Should find something better.
r.size.width += 1;
[[self window] setFrame:r display:YES];
d->wait_for_expose_value = 0; d->wait_for_expose_value = 0;
} }
through_drawRect = YES; through_drawRect = YES;