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clutter/stage: Add view scale support on read_pixels()

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https://bugzilla.gnome.org/show_bug.cgi?id=765011
https://gitlab.gnome.org/GNOME/mutter/merge_requests/3
This commit is contained in:
Marco Trevisan (Treviño) 2018-01-26 13:39:44 +01:00 committed by Marco Trevisan
parent baf98bb205
commit 412d5685ba
1 changed files with 11 additions and 3 deletions
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14
clutter/clutter/clutter-stage.c
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@ -2944,6 +2944,9 @@ clutter_stage_read_pixels (ClutterStage *stage,
cairo_region_t *clip;
cairo_rectangle_int_t clip_rect;
CoglFramebuffer *framebuffer;
float view_scale;
float pixel_width;
float pixel_height;
uint8_t *pixels;
g_return_val_if_fail (CLUTTER_IS_STAGE (stage), NULL);
@ -2986,10 +2989,15 @@ clutter_stage_read_pixels (ClutterStage *stage,
cogl_push_framebuffer (framebuffer);
clutter_stage_do_paint_view (stage, view, &clip_rect);
pixels = g_malloc0 (clip_rect.width * clip_rect.height * 4);
view_scale = clutter_stage_view_get_scale (view);
pixel_width = roundf (clip_rect.width * view_scale);
pixel_height = roundf (clip_rect.height * view_scale);
pixels = g_malloc0 (pixel_width * pixel_height * 4);
cogl_framebuffer_read_pixels (framebuffer,
clip_rect.x, clip_rect.y,
clip_rect.width, clip_rect.height,
clip_rect.x * view_scale,
clip_rect.y * view_scale,
pixel_width, pixel_height,
COGL_PIXEL_FORMAT_RGBA_8888,
pixels);