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gsk: Refactor damage computation for GL renderer

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Previously, we got the damage, then computed the changed area, then
started a frame with that changed area.

But starting a frame computes the damage for us.

So now we start a frame, then get the damage area from that, then
compute the change area.
This commit is contained in:
Benjamin Otte 2018-04-20 16:07:34 +02:00
parent 4aac0760b3
commit 4d481ecb95
1 changed files with 6 additions and 11 deletions
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17
gsk/gl/gskglrenderer.c
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@ -2577,7 +2577,12 @@ gsk_gl_renderer_render (GskRenderer *renderer,
gdk_surface_get_width (surface) * self->scale_factor,
gdk_surface_get_height (surface) * self->scale_factor
};
damage = gdk_gl_context_get_damage (self->gl_context);
context = gdk_surface_begin_draw_frame (surface,
GDK_DRAW_CONTEXT (self->gl_context),
update_area);
damage = gdk_drawing_context_get_clip (context);
cairo_region_union (damage, update_area);
if (cairo_region_contains_rectangle (damage, &whole_surface) == CAIRO_REGION_OVERLAP_IN)
@ -2597,17 +2602,7 @@ gsk_gl_renderer_render (GskRenderer *renderer,
self->render_region = cairo_region_reference (damage);
}
context = gdk_surface_begin_draw_frame (surface,
GDK_DRAW_CONTEXT (self->gl_context),
damage);
cairo_region_destroy (damage);
if (self->render_region)
{
damage = gdk_drawing_context_get_clip (context);
cairo_region_union (self->render_region, damage);
cairo_region_destroy (damage);
}
self->scale_factor = gdk_surface_get_scale_factor (surface);
gdk_gl_context_make_current (self->gl_context);