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shaped-texture: Put actual texture painting in helper

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This is so that it can be reused later by meta_shaped_texture_get_image() for
drawing via an offscreen framebuffer.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/362
This commit is contained in:
Jonas Ådahl 2018-12-19 12:52:58 +01:00 committed by Georges Basile Stavracas Neto
parent 37e36e8208
commit e1370ee209
1 changed files with 77 additions and 62 deletions
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139
src/compositor/meta-shaped-texture.c
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@ -490,9 +490,11 @@ texture_is_idle_and_not_mipmapped (gpointer user_data)
}
static void
meta_shaped_texture_paint (ClutterActor *actor)
do_paint (MetaShapedTexture *stex,
CoglFramebuffer *fb,
CoglTexture *paint_tex,
cairo_region_t *clip_region)
{
MetaShapedTexture *stex = (MetaShapedTexture *) actor;
double tex_scale;
int dst_width, dst_height;
cairo_rectangle_int_t tex_rect;
@ -502,63 +504,10 @@ meta_shaped_texture_paint (ClutterActor *actor)
cairo_region_t *opaque_tex_region;
cairo_region_t *blended_tex_region;
CoglContext *ctx;
CoglFramebuffer *fb;
CoglTexture *paint_tex = NULL;
ClutterActorBox alloc;
CoglPipelineFilter filter;
gint64 now = g_get_monotonic_time ();
if (stex->clip_region && cairo_region_is_empty (stex->clip_region))
return;
if (!CLUTTER_ACTOR_IS_REALIZED (CLUTTER_ACTOR (stex)))
clutter_actor_realize (CLUTTER_ACTOR (stex));
/* The GL EXT_texture_from_pixmap extension does allow for it to be
* used together with SGIS_generate_mipmap, however this is very
* rarely supported. Also, even when it is supported there
* are distinct performance implications from:
*
* - Updating mipmaps that we don't need
* - Having to reallocate pixmaps on the server into larger buffers
*
* So, we just unconditionally use our mipmap emulation code. If we
* wanted to use SGIS_generate_mipmap, we'd have to query COGL to
* see if it was supported (no API currently), and then if and only
* if that was the case, set the clutter texture quality to HIGH.
* Setting the texture quality to high without SGIS_generate_mipmap
* support for TFP textures will result in fallbacks to XGetImage.
*/
if (stex->create_mipmaps && stex->last_invalidation)
{
gint64 age = now - stex->last_invalidation;
if (age >= MIN_MIPMAP_AGE_USEC ||
stex->fast_updates < MIN_FAST_UPDATES_BEFORE_UNMIPMAP)
paint_tex = meta_texture_tower_get_paint_texture (stex->paint_tower);
}
if (paint_tex == NULL)
{
paint_tex = COGL_TEXTURE (stex->texture);
if (paint_tex == NULL)
return;
if (stex->create_mipmaps)
{
/* Minus 1000 to ensure we don't fail the age test in timeout */
stex->earliest_remipmap = now + MIN_MIPMAP_AGE_USEC - 1000;
if (!stex->remipmap_timeout_id)
stex->remipmap_timeout_id =
g_timeout_add (MIN_MIPMAP_AGE_USEC / 1000,
texture_is_idle_and_not_mipmapped,
stex);
}
}
clutter_actor_get_scale (actor, &tex_scale, NULL);
clutter_actor_get_scale (CLUTTER_ACTOR (stex), &tex_scale, NULL);
ensure_size_valid (stex);
dst_width = stex->dst_width;
@ -568,8 +517,6 @@ meta_shaped_texture_paint (ClutterActor *actor)
tex_rect = (cairo_rectangle_int_t) { 0, 0, dst_width, dst_height };
fb = cogl_get_draw_framebuffer ();
/* Use nearest-pixel interpolation if the texture is unscaled. This
* improves performance, especially with software rendering.
*/
@ -583,8 +530,8 @@ meta_shaped_texture_paint (ClutterActor *actor)
ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
opacity = clutter_actor_get_paint_opacity (actor);
clutter_actor_get_allocation_box (actor, &alloc);
opacity = clutter_actor_get_paint_opacity (CLUTTER_ACTOR (stex));
clutter_actor_get_allocation_box (CLUTTER_ACTOR (stex), &alloc);
if (stex->opaque_region && opacity == 255)
{
@ -600,10 +547,10 @@ meta_shaped_texture_paint (ClutterActor *actor)
use_opaque_region = FALSE;
}
if (stex->clip_region)
if (clip_region)
{
clip_tex_region =
meta_region_scale_double (stex->clip_region,
meta_region_scale_double (clip_region,
1.0 / tex_scale,
META_ROUNDING_STRATEGY_GROW);
}
@ -745,6 +692,74 @@ meta_shaped_texture_paint (ClutterActor *actor)
g_clear_pointer (&blended_tex_region, cairo_region_destroy);
}
static void
meta_shaped_texture_paint (ClutterActor *actor)
{
MetaShapedTexture *stex = META_SHAPED_TEXTURE (actor);
CoglTexture *paint_tex;
CoglFramebuffer *fb;
if (!stex->texture)
return;
if (stex->clip_region && cairo_region_is_empty (stex->clip_region))
return;
if (!CLUTTER_ACTOR_IS_REALIZED (CLUTTER_ACTOR (stex)))
clutter_actor_realize (CLUTTER_ACTOR (stex));
/* The GL EXT_texture_from_pixmap extension does allow for it to be
* used together with SGIS_generate_mipmap, however this is very
* rarely supported. Also, even when it is supported there
* are distinct performance implications from:
*
* - Updating mipmaps that we don't need
* - Having to reallocate pixmaps on the server into larger buffers
*
* So, we just unconditionally use our mipmap emulation code. If we
* wanted to use SGIS_generate_mipmap, we'd have to query COGL to
* see if it was supported (no API currently), and then if and only
* if that was the case, set the clutter texture quality to HIGH.
* Setting the texture quality to high without SGIS_generate_mipmap
* support for TFP textures will result in fallbacks to XGetImage.
*/
if (stex->create_mipmaps)
{
int64_t now = g_get_monotonic_time ();
int64_t age = now - stex->last_invalidation;
if (age >= MIN_MIPMAP_AGE_USEC ||
stex->fast_updates < MIN_FAST_UPDATES_BEFORE_UNMIPMAP)
{
paint_tex = meta_texture_tower_get_paint_texture (stex->paint_tower);
}
else
{
paint_tex = stex->texture;
/* Minus 1000 to ensure we don't fail the age test in timeout */
stex->earliest_remipmap = now + MIN_MIPMAP_AGE_USEC - 1000;
if (!stex->remipmap_timeout_id)
stex->remipmap_timeout_id =
g_timeout_add (MIN_MIPMAP_AGE_USEC / 1000,
texture_is_idle_and_not_mipmapped,
stex);
}
}
else
{
paint_tex = COGL_TEXTURE (stex->texture);
}
if (cogl_texture_get_width (paint_tex) == 0 ||
cogl_texture_get_height (paint_tex) == 0)
return;
fb = cogl_get_draw_framebuffer ();
do_paint (META_SHAPED_TEXTURE (actor), fb, paint_tex, stex->clip_region);
}
static void
meta_shaped_texture_get_preferred_width (ClutterActor *self,
gfloat for_height,