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macos: improve use of swap rectangles with OpenGL

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This commit is contained in:
Christian Hergert 2021-02-08 09:59:59 -08:00
parent 65296228d7
commit 13e162c404
2 changed files with 23 additions and 24 deletions
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1
gdk/macos/gdkmacosglcontext-private.h
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@ -45,7 +45,6 @@ struct _GdkMacosGLContext
NSView *dummy_view;
cairo_region_t *damage;
cairo_rectangle_int_t flush_rect;
guint is_attached : 1;
guint needs_resize : 1;

42
gdk/macos/gdkmacosglcontext.c
View File

@ -278,6 +278,9 @@ gdk_macos_gl_context_begin_frame (GdkDrawContext *context,
surface = gdk_draw_context_get_surface (context);
g_clear_pointer (&self->damage, cairo_region_destroy);
self->damage = cairo_region_copy (painted);
/* If begin frame is called, that means we are trying to draw to
* the NSWindow using our view. That might be a GdkMacosCairoView
* but we need it to be a GL view. Also, only in this case do we
@ -286,29 +289,8 @@ gdk_macos_gl_context_begin_frame (GdkDrawContext *context,
*/
if (!self->is_attached &&
gdk_gl_context_get_shared_context (GDK_GL_CONTEXT (context)))
{
CGLContextObj glctx = [self->gl_context CGLContextObj];
GLint swapRect[4];
ensure_gl_view (self);
g_clear_pointer (&self->damage, cairo_region_destroy);
self->damage = cairo_region_copy (painted);
cairo_region_get_extents (painted, &self->flush_rect);
/* Coordinates are in display coordinates, where as flush_rect is
* in GDK coordinates. Must flip Y to match display coordinates where
* 0,0 is the bottom-left corner.
*/
swapRect[0] = self->flush_rect.x; /* left */
swapRect[1] = surface->height - self->flush_rect.y; /* bottom */
swapRect[2] = self->flush_rect.width; /* width */
swapRect[3] = self->flush_rect.height; /* height */
CGLSetParameter (glctx, kCGLCPSwapRectangle, swapRect);
}
if (self->needs_resize)
{
CGLContextObj cgl_context = [self->gl_context CGLContextObj];
@ -363,7 +345,25 @@ gdk_macos_gl_context_end_frame (GdkDrawContext *context,
GDK_DRAW_CONTEXT_CLASS (gdk_macos_gl_context_parent_class)->end_frame (context, painted);
if (!self->is_attached)
{
GdkSurface *surface = gdk_draw_context_get_surface (context);
CGLContextObj glctx = [self->gl_context CGLContextObj];
cairo_rectangle_int_t flush_rect;
GLint swapRect[4];
/* Coordinates are in display coordinates, where as flush_rect is
* in GDK coordinates. Must flip Y to match display coordinates where
* 0,0 is the bottom-left corner.
*/
cairo_region_get_extents (painted, &flush_rect);
swapRect[0] = flush_rect.x; /* left */
swapRect[1] = surface->height - flush_rect.y; /* bottom */
swapRect[2] = flush_rect.width; /* width */
swapRect[3] = flush_rect.height; /* height */
CGLSetParameter (glctx, kCGLCPSwapRectangle, swapRect);
[self->gl_context flushBuffer];
}
}
static void