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gl-renderer: implement view scissor

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Implement support for weston_view_set_mask().

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Nobuhiko Tanibata <NOBUHIKO_TANIBATA@xddp.denso.co.jp>
Tested-by: Nobuhiko Tanibata <NOBUHIKO_TANIBATA@xddp.denso.co.jp>
Reviewed-By: Derek Foreman <derekf@osg.samsung.com>
This commit is contained in:
Pekka Paalanen 2015-02-18 09:48:59 +02:00
parent 5580f2246e
commit fa79b1d9dc
1 changed files with 19 additions and 3 deletions
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22
src/gl-renderer.c
View file

@ -593,6 +593,8 @@ draw_view(struct weston_view *ev, struct weston_output *output,
struct gl_surface_state *gs = get_surface_state(ev->surface);
/* repaint bounding region in global coordinates: */
pixman_region32_t repaint;
/* opaque region in surface coordinates: */
pixman_region32_t surface_opaque;
/* non-opaque region in surface coordinates: */
pixman_region32_t surface_blend;
GLint filter;
@ -638,10 +640,22 @@ draw_view(struct weston_view *ev, struct weston_output *output,
/* blended region is whole surface minus opaque region: */
pixman_region32_init_rect(&surface_blend, 0, 0,
ev->surface->width, ev->surface->height);
pixman_region32_subtract(&surface_blend, &surface_blend, &ev->surface->opaque);
if (ev->geometry.scissor_enabled)
pixman_region32_intersect(&surface_blend, &surface_blend,
&ev->geometry.scissor);
pixman_region32_subtract(&surface_blend, &surface_blend,
&ev->surface->opaque);
/* XXX: Should we be using ev->transform.opaque here? */
if (pixman_region32_not_empty(&ev->surface->opaque)) {
pixman_region32_init(&surface_opaque);
if (ev->geometry.scissor_enabled)
pixman_region32_intersect(&surface_opaque,
&ev->surface->opaque,
&ev->geometry.scissor);
else
pixman_region32_copy(&surface_opaque, &ev->surface->opaque);
if (pixman_region32_not_empty(&surface_opaque)) {
if (gs->shader == &gr->texture_shader_rgba) {
/* Special case for RGBA textures with possibly
* bad data in alpha channel: use the shader
@ -657,7 +671,7 @@ draw_view(struct weston_view *ev, struct weston_output *output,
else
glDisable(GL_BLEND);
repaint_region(ev, &repaint, &ev->surface->opaque);
repaint_region(ev, &repaint, &surface_opaque);
}
if (pixman_region32_not_empty(&surface_blend)) {
@ -667,6 +681,7 @@ draw_view(struct weston_view *ev, struct weston_output *output,
}
pixman_region32_fini(&surface_blend);
pixman_region32_fini(&surface_opaque);
out:
pixman_region32_fini(&repaint);
@ -2161,6 +2176,7 @@ gl_renderer_create(struct weston_compositor *ec, EGLNativeDisplayType display,
ec->renderer = &gr->base;
ec->capabilities |= WESTON_CAP_ROTATION_ANY;
ec->capabilities |= WESTON_CAP_CAPTURE_YFLIP;
ec->capabilities |= WESTON_CAP_VIEW_CLIP_MASK;
if (gl_renderer_setup_egl_extensions(ec) < 0)
goto err_egl;