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mutter/src/compositor/meta-shaped-texture.c
Robert Mader 22884b0b00 shaped-texture: Use draw_rectangle() for full paints 
This reverts a change introduced in edfe5cc3 to use `paint_clipped_rectangle()`
instead of `cogl_framebuffer_draw_rectangle()` for full paints as it
contained logic necessary for viewport src-rects. This is not longer the case.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/504
2019-04-17 20:28:43 +00:00

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/*
* Authored By Neil Roberts <neil@linux.intel.com>
* and Jasper St. Pierre <jstpierre@mecheye.net>
*
* Copyright (C) 2008 Intel Corporation
* Copyright (C) 2012 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:meta-shaped-texture
* @title: MetaShapedTexture
* @short_description: An actor to draw a masked texture.
*/
#include "config.h"
#include "backends/meta-monitor-transform.h"
#include "compositor/meta-shaped-texture-private.h"
#include "core/boxes-private.h"
#include <gdk/gdk.h>
#include <math.h>
#include "cogl/cogl.h"
#include "compositor/clutter-utils.h"
#include "compositor/meta-cullable.h"
#include "compositor/meta-texture-tower.h"
#include "compositor/region-utils.h"
#include "core/boxes-private.h"
#include "meta/meta-shaped-texture.h"
/* MAX_MIPMAPPING_FPS needs to be as small as possible for the best GPU
* performance, but higher than the refresh rate of commonly slow updating
* windows like top or a blinking cursor, so that such windows do get
* mipmapped.
*/
#define MAX_MIPMAPPING_FPS 5
#define MIN_MIPMAP_AGE_USEC (G_USEC_PER_SEC / MAX_MIPMAPPING_FPS)
/* MIN_FAST_UPDATES_BEFORE_UNMIPMAP allows windows to update themselves
* occasionally without causing mipmapping to be disabled, so long as such
* an update takes fewer update_area calls than:
*/
#define MIN_FAST_UPDATES_BEFORE_UNMIPMAP 20
static void meta_shaped_texture_dispose (GObject *object);
static void meta_shaped_texture_paint (ClutterActor *actor);
static void meta_shaped_texture_get_preferred_width (ClutterActor *self,
gfloat for_height,
gfloat *min_width_p,
gfloat *natural_width_p);
static void meta_shaped_texture_get_preferred_height (ClutterActor *self,
gfloat for_width,
gfloat *min_height_p,
gfloat *natural_height_p);
static gboolean meta_shaped_texture_get_paint_volume (ClutterActor *self, ClutterPaintVolume *volume);
static void cullable_iface_init (MetaCullableInterface *iface);
enum
{
SIZE_CHANGED,
LAST_SIGNAL,
};
static guint signals[LAST_SIGNAL];
struct _MetaShapedTexture
{
ClutterActor parent;
MetaTextureTower *paint_tower;
CoglTexture *texture;
CoglTexture *mask_texture;
CoglSnippet *snippet;
CoglPipeline *base_pipeline;
CoglPipeline *masked_pipeline;
CoglPipeline *unblended_pipeline;
gboolean is_y_inverted;
/* The region containing only fully opaque pixels */
cairo_region_t *opaque_region;
/* MetaCullable regions, see that documentation for more details */
cairo_region_t *clip_region;
cairo_region_t *unobscured_region;
gboolean size_invalid;
MetaMonitorTransform transform;
gboolean has_viewport_src_rect;
ClutterRect viewport_src_rect;
gboolean has_viewport_dst_size;
int viewport_dst_width;
int viewport_dst_height;
int tex_width, tex_height;
int fallback_width, fallback_height;
int dst_width, dst_height;
gint64 prev_invalidation, last_invalidation;
guint fast_updates;
guint remipmap_timeout_id;
gint64 earliest_remipmap;
guint create_mipmaps : 1;
};
G_DEFINE_TYPE_WITH_CODE (MetaShapedTexture, meta_shaped_texture, CLUTTER_TYPE_ACTOR,
G_IMPLEMENT_INTERFACE (META_TYPE_CULLABLE, cullable_iface_init));
static void
meta_shaped_texture_class_init (MetaShapedTextureClass *klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
ClutterActorClass *actor_class = (ClutterActorClass *) klass;
gobject_class->dispose = meta_shaped_texture_dispose;
actor_class->get_preferred_width = meta_shaped_texture_get_preferred_width;
actor_class->get_preferred_height = meta_shaped_texture_get_preferred_height;
actor_class->paint = meta_shaped_texture_paint;
actor_class->get_paint_volume = meta_shaped_texture_get_paint_volume;
signals[SIZE_CHANGED] = g_signal_new ("size-changed",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
}
static void
invalidate_size (MetaShapedTexture *stex)
{
stex->size_invalid = TRUE;
}
static void
meta_shaped_texture_init (MetaShapedTexture *stex)
{
stex->paint_tower = meta_texture_tower_new ();
stex->texture = NULL;
stex->mask_texture = NULL;
stex->create_mipmaps = TRUE;
stex->is_y_inverted = TRUE;
stex->transform = META_MONITOR_TRANSFORM_NORMAL;
g_signal_connect (stex,
"notify::scale-x",
G_CALLBACK (invalidate_size),
stex);
}
static void
update_size (MetaShapedTexture *stex)
{
ClutterActor *actor = CLUTTER_ACTOR (stex);
int dst_width;
int dst_height;
if (stex->has_viewport_dst_size)
{
double tex_scale;
clutter_actor_get_scale (actor, &tex_scale, NULL);
dst_width = ceil (stex->viewport_dst_width / tex_scale);
dst_height = ceil (stex->viewport_dst_height / tex_scale);
}
else if (stex->has_viewport_src_rect)
{
double tex_scale;
clutter_actor_get_scale (actor, &tex_scale, NULL);
dst_width = ceil (stex->viewport_src_rect.size.width / tex_scale);
dst_height = ceil (stex->viewport_src_rect.size.height / tex_scale);
}
else
{
if (meta_monitor_transform_is_rotated (stex->transform))
{
if (stex->texture)
{
dst_width = stex->tex_height;
dst_height = stex->tex_width;
}
else
{
dst_width = stex->fallback_height;
dst_height = stex->fallback_width;
}
}
else
{
if (stex->texture)
{
dst_width = stex->tex_width;
dst_height = stex->tex_height;
}
else
{
dst_width = stex->fallback_width;
dst_height = stex->fallback_height;
}
}
}
stex->size_invalid = FALSE;
if (stex->dst_width != dst_width ||
stex->dst_height != dst_height)
{
stex->dst_width = dst_width;
stex->dst_height = dst_height;
meta_shaped_texture_set_mask_texture (stex, NULL);
clutter_actor_queue_relayout (CLUTTER_ACTOR (stex));
g_signal_emit (stex, signals[SIZE_CHANGED], 0);
}
}
static void
ensure_size_valid (MetaShapedTexture *stex)
{
if (stex->size_invalid)
update_size (stex);
}
static void
set_unobscured_region (MetaShapedTexture *stex,
cairo_region_t *unobscured_region)
{
g_clear_pointer (&stex->unobscured_region, cairo_region_destroy);
if (unobscured_region)
{
int width, height;
ensure_size_valid (stex);
width = stex->dst_width;
height = stex->dst_height;
cairo_rectangle_int_t bounds = { 0, 0, width, height };
stex->unobscured_region = cairo_region_copy (unobscured_region);
cairo_region_intersect_rectangle (stex->unobscured_region, &bounds);
}
}
static void
set_clip_region (MetaShapedTexture *stex,
cairo_region_t *clip_region)
{
g_clear_pointer (&stex->clip_region, cairo_region_destroy);
if (clip_region)
stex->clip_region = cairo_region_copy (clip_region);
}
static void
meta_shaped_texture_reset_pipelines (MetaShapedTexture *stex)
{
g_clear_pointer (&stex->base_pipeline, cogl_object_unref);
g_clear_pointer (&stex->masked_pipeline, cogl_object_unref);
g_clear_pointer (&stex->unblended_pipeline, cogl_object_unref);
}
static void
meta_shaped_texture_dispose (GObject *object)
{
MetaShapedTexture *stex = (MetaShapedTexture *) object;
if (stex->remipmap_timeout_id)
{
g_source_remove (stex->remipmap_timeout_id);
stex->remipmap_timeout_id = 0;
}
if (stex->paint_tower)
meta_texture_tower_free (stex->paint_tower);
stex->paint_tower = NULL;
g_clear_pointer (&stex->texture, cogl_object_unref);
g_clear_pointer (&stex->opaque_region, cairo_region_destroy);
meta_shaped_texture_set_mask_texture (stex, NULL);
set_unobscured_region (stex, NULL);
set_clip_region (stex, NULL);
meta_shaped_texture_reset_pipelines (stex);
g_clear_pointer (&stex->snippet, cogl_object_unref);
G_OBJECT_CLASS (meta_shaped_texture_parent_class)->dispose (object);
}
static CoglPipeline *
get_base_pipeline (MetaShapedTexture *stex,
CoglContext *ctx)
{
CoglPipeline *pipeline;
CoglMatrix matrix;
if (stex->base_pipeline)
return stex->base_pipeline;
pipeline = cogl_pipeline_new (ctx);
cogl_pipeline_set_layer_wrap_mode_s (pipeline, 0,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
cogl_pipeline_set_layer_wrap_mode_t (pipeline, 0,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
cogl_pipeline_set_layer_wrap_mode_s (pipeline, 1,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
cogl_pipeline_set_layer_wrap_mode_t (pipeline, 1,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
cogl_matrix_init_identity (&matrix);
if (!stex->is_y_inverted)
{
cogl_matrix_scale (&matrix, 1, -1, 1);
cogl_matrix_translate (&matrix, 0, -1, 0);
cogl_pipeline_set_layer_matrix (pipeline, 0, &matrix);
}
if (stex->transform != META_MONITOR_TRANSFORM_NORMAL)
{
CoglEuler euler;
cogl_matrix_translate (&matrix, 0.5, 0.5, 0.0);
switch (stex->transform)
{
case META_MONITOR_TRANSFORM_90:
cogl_euler_init (&euler, 0.0, 0.0, 90.0);
break;
case META_MONITOR_TRANSFORM_180:
cogl_euler_init (&euler, 0.0, 0.0, 180.0);
break;
case META_MONITOR_TRANSFORM_270:
cogl_euler_init (&euler, 0.0, 0.0, 270.0);
break;
case META_MONITOR_TRANSFORM_FLIPPED:
cogl_euler_init (&euler, 180.0, 0.0, 0.0);
break;
case META_MONITOR_TRANSFORM_FLIPPED_90:
cogl_euler_init (&euler, 0.0, 180.0, 90.0);
break;
case META_MONITOR_TRANSFORM_FLIPPED_180:
cogl_euler_init (&euler, 180.0, 0.0, 180.0);
break;
case META_MONITOR_TRANSFORM_FLIPPED_270:
cogl_euler_init (&euler, 0.0, 180.0, 270.0);
break;
case META_MONITOR_TRANSFORM_NORMAL:
g_assert_not_reached ();
}
cogl_matrix_rotate_euler (&matrix, &euler);
cogl_matrix_translate (&matrix, -0.5, -0.5, 0.0);
}
if (stex->has_viewport_src_rect)
{
ClutterActor *actor = CLUTTER_ACTOR (stex);
double tex_scale;
clutter_actor_get_scale (actor, &tex_scale, NULL);
if (meta_monitor_transform_is_rotated (stex->transform))
{
cogl_matrix_scale (&matrix,
stex->viewport_src_rect.size.width /
(stex->tex_height * tex_scale),
stex->viewport_src_rect.size.height /
(stex->tex_width * tex_scale),
1);
}
else
{
cogl_matrix_scale (&matrix,
stex->viewport_src_rect.size.width /
(stex->tex_width * tex_scale),
stex->viewport_src_rect.size.height /
(stex->tex_height * tex_scale),
1);
}
cogl_matrix_translate (&matrix,
stex->viewport_src_rect.origin.x /
stex->viewport_src_rect.size.width,
stex->viewport_src_rect.origin.y /
stex->viewport_src_rect.size.height,
0);
}
cogl_pipeline_set_layer_matrix (pipeline, 0, &matrix);
cogl_pipeline_set_layer_matrix (pipeline, 1, &matrix);
if (stex->snippet)
cogl_pipeline_add_layer_snippet (pipeline, 0, stex->snippet);
stex->base_pipeline = pipeline;
return stex->base_pipeline;
}
static CoglPipeline *
get_unmasked_pipeline (MetaShapedTexture *stex,
CoglContext *ctx)
{
return get_base_pipeline (stex, ctx);
}
static CoglPipeline *
get_masked_pipeline (MetaShapedTexture *stex,
CoglContext *ctx)
{
CoglPipeline *pipeline;
if (stex->masked_pipeline)
return stex->masked_pipeline;
pipeline = cogl_pipeline_copy (get_base_pipeline (stex, ctx));
cogl_pipeline_set_layer_combine (pipeline, 1,
"RGBA = MODULATE (PREVIOUS, TEXTURE[A])",
NULL);
stex->masked_pipeline = pipeline;
return pipeline;
}
static CoglPipeline *
get_unblended_pipeline (MetaShapedTexture *stex,
CoglContext *ctx)
{
CoglPipeline *pipeline;
CoglColor color;
if (stex->unblended_pipeline)
return stex->unblended_pipeline;
pipeline = cogl_pipeline_copy (get_base_pipeline (stex, ctx));
cogl_color_init_from_4ub (&color, 255, 255, 255, 255);
cogl_pipeline_set_blend (pipeline,
"RGBA = ADD (SRC_COLOR, 0)",
NULL);
cogl_pipeline_set_color (pipeline, &color);
stex->unblended_pipeline = pipeline;
return pipeline;
}
static void
paint_clipped_rectangle (MetaShapedTexture *stex,
CoglFramebuffer *fb,
CoglPipeline *pipeline,
cairo_rectangle_int_t *rect,
ClutterActorBox *alloc)
{
float coords[8];
float x1, y1, x2, y2;
float alloc_width;
float alloc_height;
x1 = rect->x;
y1 = rect->y;
x2 = rect->x + rect->width;
y2 = rect->y + rect->height;
alloc_width = alloc->x2 - alloc->x1;
alloc_height = alloc->y2 - alloc->y1;
coords[0] = rect->x / alloc_width;
coords[1] = rect->y / alloc_height;
coords[2] = (rect->x + rect->width) / alloc_width;
coords[3] = (rect->y + rect->height) / alloc_height;
coords[4] = coords[0];
coords[5] = coords[1];
coords[6] = coords[2];
coords[7] = coords[3];
cogl_framebuffer_draw_multitextured_rectangle (fb, pipeline,
x1, y1, x2, y2,
&coords[0], 8);
}
static void
set_cogl_texture (MetaShapedTexture *stex,
CoglTexture *cogl_tex)
{
int width, height;
g_return_if_fail (META_IS_SHAPED_TEXTURE (stex));
if (stex->texture)
cogl_object_unref (stex->texture);
stex->texture = cogl_tex;
if (cogl_tex != NULL)
{
cogl_object_ref (cogl_tex);
width = cogl_texture_get_width (COGL_TEXTURE (cogl_tex));
height = cogl_texture_get_height (COGL_TEXTURE (cogl_tex));
}
else
{
width = 0;
height = 0;
}
if (stex->tex_width != width ||
stex->tex_height != height)
{
stex->tex_width = width;
stex->tex_height = height;
update_size (stex);
}
/* NB: We don't queue a redraw of the actor here because we don't
* know how much of the buffer has changed with respect to the
* previous buffer. We only queue a redraw in response to surface
* damage. */
if (stex->create_mipmaps)
meta_texture_tower_set_base_texture (stex->paint_tower, cogl_tex);
}
static gboolean
texture_is_idle_and_not_mipmapped (gpointer user_data)
{
MetaShapedTexture *stex = META_SHAPED_TEXTURE (user_data);
if ((g_get_monotonic_time () - stex->earliest_remipmap) < 0)
return G_SOURCE_CONTINUE;
clutter_actor_queue_redraw (CLUTTER_ACTOR (stex));
stex->remipmap_timeout_id = 0;
return G_SOURCE_REMOVE;
}
static void
do_paint (MetaShapedTexture *stex,
CoglFramebuffer *fb,
CoglTexture *paint_tex,
cairo_region_t *clip_region)
{
double tex_scale;
int dst_width, dst_height;
cairo_rectangle_int_t tex_rect;
guchar opacity;
gboolean use_opaque_region;
cairo_region_t *clip_tex_region;
cairo_region_t *opaque_tex_region;
cairo_region_t *blended_tex_region;
CoglContext *ctx;
ClutterActorBox alloc;
CoglPipelineFilter filter;
clutter_actor_get_scale (CLUTTER_ACTOR (stex), &tex_scale, NULL);
ensure_size_valid (stex);
dst_width = stex->dst_width;
dst_height = stex->dst_height;
if (dst_width == 0 || dst_height == 0) /* no contents yet */
return;
tex_rect = (cairo_rectangle_int_t) { 0, 0, dst_width, dst_height };
/* Use nearest-pixel interpolation if the texture is unscaled. This
* improves performance, especially with software rendering.
*/
filter = COGL_PIPELINE_FILTER_LINEAR;
if (meta_actor_painting_untransformed (fb,
dst_width, dst_height,
NULL, NULL))
filter = COGL_PIPELINE_FILTER_NEAREST;
ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
opacity = clutter_actor_get_paint_opacity (CLUTTER_ACTOR (stex));
clutter_actor_get_allocation_box (CLUTTER_ACTOR (stex), &alloc);
if (stex->opaque_region && opacity == 255)
{
opaque_tex_region =
meta_region_scale_double (stex->opaque_region,
1.0 / tex_scale,
META_ROUNDING_STRATEGY_SHRINK);
use_opaque_region = TRUE;
}
else
{
opaque_tex_region = NULL;
use_opaque_region = FALSE;
}
if (clip_region)
{
clip_tex_region =
meta_region_scale_double (clip_region,
1.0 / tex_scale,
META_ROUNDING_STRATEGY_GROW);
}
else
{
clip_tex_region = NULL;
}
if (use_opaque_region)
{
if (clip_tex_region)
blended_tex_region = cairo_region_copy (clip_tex_region);
else
blended_tex_region = cairo_region_create_rectangle (&tex_rect);
cairo_region_subtract (blended_tex_region, opaque_tex_region);
}
else
{
if (clip_tex_region)
blended_tex_region = cairo_region_reference (clip_tex_region);
else
blended_tex_region = NULL;
}
/* Limit to how many separate rectangles we'll draw; beyond this just
* fall back and draw the whole thing */
#define MAX_RECTS 16
if (blended_tex_region)
{
int n_rects = cairo_region_num_rectangles (blended_tex_region);
if (n_rects > MAX_RECTS)
{
/* Fall back to taking the fully blended path. */
use_opaque_region = FALSE;
g_clear_pointer (&blended_tex_region, cairo_region_destroy);
}
}
/* First, paint the unblended parts, which are part of the opaque region. */
if (use_opaque_region)
{
CoglPipeline *opaque_pipeline;
cairo_region_t *region;
int n_rects;
int i;
if (clip_tex_region)
{
region = cairo_region_copy (clip_tex_region);
cairo_region_intersect (region, opaque_tex_region);
}
else
{
region = cairo_region_reference (opaque_tex_region);
}
if (!cairo_region_is_empty (region))
{
opaque_pipeline = get_unblended_pipeline (stex, ctx);
cogl_pipeline_set_layer_texture (opaque_pipeline, 0, paint_tex);
cogl_pipeline_set_layer_filters (opaque_pipeline, 0, filter, filter);
n_rects = cairo_region_num_rectangles (region);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (region, i, &rect);
paint_clipped_rectangle (stex,
fb,
opaque_pipeline,
&rect,
&alloc);
}
}
cairo_region_destroy (region);
}
/* Now, go ahead and paint the blended parts. */
/* We have three cases:
* 1) blended_tex_region has rectangles - paint the rectangles.
* 2) blended_tex_region is empty - don't paint anything
* 3) blended_tex_region is NULL - paint fully-blended.
*
* 1) and 3) are the times where we have to paint stuff. This tests
* for 1) and 3).
*/
if (!blended_tex_region || !cairo_region_is_empty (blended_tex_region))
{
CoglPipeline *blended_pipeline;
if (stex->mask_texture == NULL)
{
blended_pipeline = get_unmasked_pipeline (stex, ctx);
}
else
{
blended_pipeline = get_masked_pipeline (stex, ctx);
cogl_pipeline_set_layer_texture (blended_pipeline, 1, stex->mask_texture);
cogl_pipeline_set_layer_filters (blended_pipeline, 1, filter, filter);
}
cogl_pipeline_set_layer_texture (blended_pipeline, 0, paint_tex);
cogl_pipeline_set_layer_filters (blended_pipeline, 0, filter, filter);
CoglColor color;
cogl_color_init_from_4ub (&color, opacity, opacity, opacity, opacity);
cogl_pipeline_set_color (blended_pipeline, &color);
if (blended_tex_region)
{
/* 1) blended_tex_region is not empty. Paint the rectangles. */
int i;
int n_rects = cairo_region_num_rectangles (blended_tex_region);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (blended_tex_region, i, &rect);
if (!gdk_rectangle_intersect (&tex_rect, &rect, &rect))
continue;
paint_clipped_rectangle (stex,
fb,
blended_pipeline,
&rect,
&alloc);
}
}
else
{
/* 3) blended_tex_region is NULL. Do a full paint. */
cogl_framebuffer_draw_rectangle (fb, blended_pipeline,
0, 0,
alloc.x2 - alloc.x1,
alloc.y2 - alloc.y1);
}
}
g_clear_pointer (&clip_tex_region, cairo_region_destroy);
g_clear_pointer (&opaque_tex_region, cairo_region_destroy);
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);
if (!paint_tex)
paint_tex = stex->texture;
}
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,
gfloat *min_width_p,
gfloat *natural_width_p)
{
MetaShapedTexture *stex = META_SHAPED_TEXTURE (self);
ensure_size_valid (stex);
if (min_width_p)
*min_width_p = stex->dst_width;
if (natural_width_p)
*natural_width_p = stex->dst_width;
}
static void
meta_shaped_texture_get_preferred_height (ClutterActor *self,
gfloat for_width,
gfloat *min_height_p,
gfloat *natural_height_p)
{
MetaShapedTexture *stex = META_SHAPED_TEXTURE (self);
ensure_size_valid (stex);
if (min_height_p)
*min_height_p = stex->dst_height;
if (natural_height_p)
*natural_height_p = stex->dst_height;
}
static cairo_region_t *
effective_unobscured_region (MetaShapedTexture *stex)
{
ClutterActor *actor;
/* Fail if we have any mapped clones. */
actor = CLUTTER_ACTOR (stex);
do
{
if (clutter_actor_has_mapped_clones (actor))
return NULL;
actor = clutter_actor_get_parent (actor);
}
while (actor != NULL);
return stex->unobscured_region;
}
static gboolean
meta_shaped_texture_get_paint_volume (ClutterActor *actor,
ClutterPaintVolume *volume)
{
return clutter_paint_volume_set_from_allocation (volume, actor);
}
void
meta_shaped_texture_set_create_mipmaps (MetaShapedTexture *stex,
gboolean create_mipmaps)
{
g_return_if_fail (META_IS_SHAPED_TEXTURE (stex));
create_mipmaps = create_mipmaps != FALSE;
if (create_mipmaps != stex->create_mipmaps)
{
CoglTexture *base_texture;
stex->create_mipmaps = create_mipmaps;
base_texture = create_mipmaps ? stex->texture : NULL;
meta_texture_tower_set_base_texture (stex->paint_tower, base_texture);
}
}
void
meta_shaped_texture_set_mask_texture (MetaShapedTexture *stex,
CoglTexture *mask_texture)
{
g_return_if_fail (META_IS_SHAPED_TEXTURE (stex));
g_clear_pointer (&stex->mask_texture, cogl_object_unref);
if (mask_texture != NULL)
{
stex->mask_texture = mask_texture;
cogl_object_ref (stex->mask_texture);
}
clutter_actor_queue_redraw (CLUTTER_ACTOR (stex));
}
gboolean
meta_shaped_texture_is_obscured (MetaShapedTexture *stex)
{
cairo_region_t *unobscured_region = effective_unobscured_region (stex);
if (unobscured_region)
return cairo_region_is_empty (unobscured_region);
else
return FALSE;
}
/**
* meta_shaped_texture_update_area:
* @stex: #MetaShapedTexture
* @x: the x coordinate of the damaged area
* @y: the y coordinate of the damaged area
* @width: the width of the damaged area
* @height: the height of the damaged area
*
* Repairs the damaged area indicated by @x, @y, @width and @height
* and potentially queues a redraw.
*
* Return value: Whether a redraw have been queued or not
*/
gboolean
meta_shaped_texture_update_area (MetaShapedTexture *stex,
int x,
int y,
int width,
int height)
{
cairo_region_t *unobscured_region;
cairo_rectangle_int_t clip;
MetaMonitorTransform inverted_transform;
if (stex->texture == NULL)
return FALSE;
clip = (cairo_rectangle_int_t) {
.x = x,
.y = y,
.width = width,
.height = height
};
inverted_transform = meta_monitor_transform_invert (stex->transform);
ensure_size_valid (stex);
meta_rectangle_transform (&clip,
inverted_transform,
stex->dst_width,
stex->dst_height,
&clip);
if (stex->has_viewport_src_rect || stex->has_viewport_dst_size)
{
ClutterRect viewport;
ClutterRect inverted_viewport;
double tex_scale;
float dst_width;
float dst_height;
int inverted_dst_width;
int inverted_dst_height;
clutter_actor_get_scale (CLUTTER_ACTOR (stex), &tex_scale, NULL);
if (stex->has_viewport_src_rect)
{
viewport = stex->viewport_src_rect;
}
else
{
viewport = (ClutterRect) {
.origin.x = 0,
.origin.y = 0,
.size.width = stex->tex_width * tex_scale,
.size.height = stex->tex_height * tex_scale
};
}
if (stex->has_viewport_dst_size)
{
dst_width = (float) stex->viewport_dst_width;
dst_height = (float) stex->viewport_dst_height;
}
else
{
dst_width = (float) stex->tex_width * tex_scale;
dst_height = (float) stex->tex_height * tex_scale;
}
inverted_viewport = (ClutterRect) {
.origin.x = -((viewport.origin.x * (dst_width / viewport.size.width)) / tex_scale),
.origin.y = -((viewport.origin.y * (dst_height / viewport.size.height)) / tex_scale),
.size.width = dst_width,
.size.height = dst_height
};
inverted_dst_width = ceilf (viewport.size.width);
inverted_dst_height = ceilf (viewport.size.height);
meta_rectangle_crop_and_scale (&clip,
&inverted_viewport,
inverted_dst_width,
inverted_dst_height,
&clip);
}
meta_texture_tower_update_area (stex->paint_tower,
clip.x,
clip.y,
clip.width,
clip.height);
stex->prev_invalidation = stex->last_invalidation;
stex->last_invalidation = g_get_monotonic_time ();
if (stex->prev_invalidation)
{
gint64 interval = stex->last_invalidation - stex->prev_invalidation;
gboolean fast_update = interval < MIN_MIPMAP_AGE_USEC;
if (!fast_update)
stex->fast_updates = 0;
else if (stex->fast_updates < MIN_FAST_UPDATES_BEFORE_UNMIPMAP)
stex->fast_updates++;
}
unobscured_region = effective_unobscured_region (stex);
if (unobscured_region)
{
cairo_region_t *intersection;
if (cairo_region_is_empty (unobscured_region))
return FALSE;
intersection = cairo_region_copy (unobscured_region);
cairo_region_intersect_rectangle (intersection, &clip);
if (!cairo_region_is_empty (intersection))
{
cairo_rectangle_int_t damage_rect;
cairo_region_get_extents (intersection, &damage_rect);
clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stex), &damage_rect);
cairo_region_destroy (intersection);
return TRUE;
}
cairo_region_destroy (intersection);
return FALSE;
}
else
{
clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stex), &clip);
return TRUE;
}
}
/**
* meta_shaped_texture_set_texture:
* @stex: The #MetaShapedTexture
* @pixmap: The #CoglTexture to display
*/
void
meta_shaped_texture_set_texture (MetaShapedTexture *stex,
CoglTexture *texture)
{
g_return_if_fail (META_IS_SHAPED_TEXTURE (stex));
set_cogl_texture (stex, texture);
}
/**
* meta_shaped_texture_set_is_y_inverted: (skip)
*/
void
meta_shaped_texture_set_is_y_inverted (MetaShapedTexture *stex,
gboolean is_y_inverted)
{
if (stex->is_y_inverted == is_y_inverted)
return;
meta_shaped_texture_reset_pipelines (stex);
stex->is_y_inverted = is_y_inverted;
}
/**
* meta_shaped_texture_set_snippet: (skip)
*/
void
meta_shaped_texture_set_snippet (MetaShapedTexture *stex,
CoglSnippet *snippet)
{
if (stex->snippet == snippet)
return;
meta_shaped_texture_reset_pipelines (stex);
g_clear_pointer (&stex->snippet, cogl_object_unref);
if (snippet)
stex->snippet = cogl_object_ref (snippet);
}
/**
* meta_shaped_texture_get_texture:
* @stex: The #MetaShapedTexture
*
* Returns: (transfer none): the unshaped texture
*/
CoglTexture *
meta_shaped_texture_get_texture (MetaShapedTexture *stex)
{
g_return_val_if_fail (META_IS_SHAPED_TEXTURE (stex), NULL);
return COGL_TEXTURE (stex->texture);
}
/**
* meta_shaped_texture_set_opaque_region:
* @stex: a #MetaShapedTexture
* @opaque_region: (transfer full): the region of the texture that
* can have blending turned off.
*
* As most windows have a large portion that does not require blending,
* we can easily turn off blending if we know the areas that do not
* require blending. This sets the region where we will not blend for
* optimization purposes.
*/
void
meta_shaped_texture_set_opaque_region (MetaShapedTexture *stex,
cairo_region_t *opaque_region)
{
g_return_if_fail (META_IS_SHAPED_TEXTURE (stex));
if (stex->opaque_region)
cairo_region_destroy (stex->opaque_region);
if (opaque_region)
stex->opaque_region = cairo_region_reference (opaque_region);
else
stex->opaque_region = NULL;
}
cairo_region_t *
meta_shaped_texture_get_opaque_region (MetaShapedTexture *stex)
{
return stex->opaque_region;
}
void
meta_shaped_texture_set_transform (MetaShapedTexture *stex,
MetaMonitorTransform transform)
{
if (stex->transform == transform)
return;
stex->transform = transform;
meta_shaped_texture_reset_pipelines (stex);
invalidate_size (stex);
}
void
meta_shaped_texture_set_viewport_src_rect (MetaShapedTexture *stex,
ClutterRect *src_rect)
{
if (!stex->has_viewport_src_rect ||
stex->viewport_src_rect.origin.x != src_rect->origin.x ||
stex->viewport_src_rect.origin.y != src_rect->origin.y ||
stex->viewport_src_rect.size.width != src_rect->size.width ||
stex->viewport_src_rect.size.height != src_rect->size.height)
{
stex->has_viewport_src_rect = TRUE;
stex->viewport_src_rect = *src_rect;
meta_shaped_texture_reset_pipelines (stex);
invalidate_size (stex);
}
}
void
meta_shaped_texture_reset_viewport_src_rect (MetaShapedTexture *stex)
{
if (!stex->has_viewport_src_rect)
return;
stex->has_viewport_src_rect = FALSE;
meta_shaped_texture_reset_pipelines (stex);
invalidate_size (stex);
}
void
meta_shaped_texture_set_viewport_dst_size (MetaShapedTexture *stex,
int dst_width,
int dst_height)
{
if (!stex->has_viewport_dst_size ||
stex->viewport_dst_width != dst_width ||
stex->viewport_dst_height != dst_height)
{
stex->has_viewport_dst_size = TRUE;
stex->viewport_dst_width = dst_width;
stex->viewport_dst_height = dst_height;
invalidate_size (stex);
}
}
void
meta_shaped_texture_reset_viewport_dst_size (MetaShapedTexture *stex)
{
if (!stex->has_viewport_dst_size)
return;
stex->has_viewport_dst_size = FALSE;
invalidate_size (stex);
}
static gboolean
should_get_via_offscreen (MetaShapedTexture *stex)
{
if (!cogl_texture_is_get_data_supported (stex->texture))
return TRUE;
if (stex->has_viewport_src_rect || stex->has_viewport_dst_size)
return TRUE;
switch (stex->transform)
{
case META_MONITOR_TRANSFORM_90:
case META_MONITOR_TRANSFORM_180:
case META_MONITOR_TRANSFORM_270:
case META_MONITOR_TRANSFORM_FLIPPED:
case META_MONITOR_TRANSFORM_FLIPPED_90:
case META_MONITOR_TRANSFORM_FLIPPED_180:
case META_MONITOR_TRANSFORM_FLIPPED_270:
return TRUE;
case META_MONITOR_TRANSFORM_NORMAL:
break;
}
return FALSE;
}
static cairo_surface_t *
get_image_via_offscreen (MetaShapedTexture *stex,
cairo_rectangle_int_t *clip)
{
ClutterBackend *clutter_backend = clutter_get_default_backend ();
CoglContext *cogl_context =
clutter_backend_get_cogl_context (clutter_backend);
CoglTexture *image_texture;
GError *error = NULL;
CoglOffscreen *offscreen;
CoglFramebuffer *fb;
CoglMatrix projection_matrix;
cairo_rectangle_int_t fallback_clip;
CoglColor clear_color;
cairo_surface_t *surface;
if (!clip)
{
fallback_clip = (cairo_rectangle_int_t) {
.width = stex->dst_width,
.height = stex->dst_height,
};
clip = &fallback_clip;
}
image_texture =
COGL_TEXTURE (cogl_texture_2d_new_with_size (cogl_context,
stex->dst_width,
stex->dst_height));
cogl_primitive_texture_set_auto_mipmap (COGL_PRIMITIVE_TEXTURE (image_texture),
FALSE);
if (!cogl_texture_allocate (COGL_TEXTURE (image_texture), &error))
{
g_error_free (error);
cogl_object_unref (image_texture);
return FALSE;
}
offscreen = cogl_offscreen_new_with_texture (COGL_TEXTURE (image_texture));
fb = COGL_FRAMEBUFFER (offscreen);
cogl_object_unref (image_texture);
if (!cogl_framebuffer_allocate (fb, &error))
{
g_error_free (error);
cogl_object_unref (fb);
return FALSE;
}
cogl_framebuffer_push_matrix (fb);
cogl_matrix_init_identity (&projection_matrix);
cogl_matrix_scale (&projection_matrix,
1.0 / (stex->dst_width / 2.0),
-1.0 / (stex->dst_height / 2.0), 0);
cogl_matrix_translate (&projection_matrix,
-(stex->dst_width / 2.0),
-(stex->dst_height / 2.0), 0);
cogl_framebuffer_set_projection_matrix (fb, &projection_matrix);
cogl_color_init_from_4ub (&clear_color, 0, 0, 0, 0);
cogl_framebuffer_clear (fb, COGL_BUFFER_BIT_COLOR, &clear_color);
do_paint (stex, fb, stex->texture, NULL);
cogl_framebuffer_pop_matrix (fb);
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
clip->width, clip->height);
cogl_framebuffer_read_pixels (fb,
clip->x, clip->y,
clip->width, clip->height,
CLUTTER_CAIRO_FORMAT_ARGB32,
cairo_image_surface_get_data (surface));
cogl_object_unref (fb);
cairo_surface_mark_dirty (surface);
return surface;
}
/**
* meta_shaped_texture_get_image:
* @stex: A #MetaShapedTexture
* @clip: A clipping rectangle, to help prevent extra processing.
* In the case that the clipping rectangle is partially or fully
* outside the bounds of the texture, the rectangle will be clipped.
*
* Flattens the two layers of the shaped texture into one ARGB32
* image by alpha blending the two images, and returns the flattened
* image.
*
* Returns: (transfer full): a new cairo surface to be freed with
* cairo_surface_destroy().
*/
cairo_surface_t *
meta_shaped_texture_get_image (MetaShapedTexture *stex,
cairo_rectangle_int_t *clip)
{
cairo_rectangle_int_t *transformed_clip = NULL;
CoglTexture *texture, *mask_texture;
cairo_surface_t *surface;
g_return_val_if_fail (META_IS_SHAPED_TEXTURE (stex), NULL);
texture = COGL_TEXTURE (stex->texture);
if (texture == NULL)
return NULL;
ensure_size_valid (stex);
if (stex->dst_width == 0 || stex->dst_height == 0)
return NULL;
if (clip != NULL)
{
double tex_scale;
cairo_rectangle_int_t dst_rect;
transformed_clip = alloca (sizeof (cairo_rectangle_int_t));
clutter_actor_get_scale (CLUTTER_ACTOR (stex), &tex_scale, NULL);
meta_rectangle_scale_double (clip, 1.0 / tex_scale,
META_ROUNDING_STRATEGY_GROW,
transformed_clip);
dst_rect = (cairo_rectangle_int_t) {
.width = stex->dst_width,
.height = stex->dst_height,
};
if (!meta_rectangle_intersect (&dst_rect, transformed_clip,
transformed_clip))
return NULL;
}
if (should_get_via_offscreen (stex))
return get_image_via_offscreen (stex, transformed_clip);
if (transformed_clip)
texture = cogl_texture_new_from_sub_texture (texture,
transformed_clip->x,
transformed_clip->y,
transformed_clip->width,
transformed_clip->height);
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
cogl_texture_get_width (texture),
cogl_texture_get_height (texture));
cogl_texture_get_data (texture, CLUTTER_CAIRO_FORMAT_ARGB32,
cairo_image_surface_get_stride (surface),
cairo_image_surface_get_data (surface));
cairo_surface_mark_dirty (surface);
if (transformed_clip)
cogl_object_unref (texture);
mask_texture = stex->mask_texture;
if (mask_texture != NULL)
{
cairo_t *cr;
cairo_surface_t *mask_surface;
if (transformed_clip)
mask_texture =
cogl_texture_new_from_sub_texture (mask_texture,
transformed_clip->x,
transformed_clip->y,
transformed_clip->width,
transformed_clip->height);
mask_surface = cairo_image_surface_create (CAIRO_FORMAT_A8,
cogl_texture_get_width (mask_texture),
cogl_texture_get_height (mask_texture));
cogl_texture_get_data (mask_texture, COGL_PIXEL_FORMAT_A_8,
cairo_image_surface_get_stride (mask_surface),
cairo_image_surface_get_data (mask_surface));
cairo_surface_mark_dirty (mask_surface);
cr = cairo_create (surface);
cairo_set_source_surface (cr, mask_surface, 0, 0);
cairo_set_operator (cr, CAIRO_OPERATOR_DEST_IN);
cairo_paint (cr);
cairo_destroy (cr);
cairo_surface_destroy (mask_surface);
if (transformed_clip)
cogl_object_unref (mask_texture);
}
return surface;
}
void
meta_shaped_texture_set_fallback_size (MetaShapedTexture *stex,
int fallback_width,
int fallback_height)
{
stex->fallback_width = fallback_width;
stex->fallback_height = fallback_height;
invalidate_size (stex);
}
static void
meta_shaped_texture_cull_out (MetaCullable *cullable,
cairo_region_t *unobscured_region,
cairo_region_t *clip_region)
{
MetaShapedTexture *stex = META_SHAPED_TEXTURE (cullable);
set_unobscured_region (stex, unobscured_region);
set_clip_region (stex, clip_region);
if (clutter_actor_get_paint_opacity (CLUTTER_ACTOR (stex)) == 0xff)
{
if (stex->opaque_region)
{
if (unobscured_region)
cairo_region_subtract (unobscured_region, stex->opaque_region);
if (clip_region)
cairo_region_subtract (clip_region, stex->opaque_region);
}
}
}
static void
meta_shaped_texture_reset_culling (MetaCullable *cullable)
{
MetaShapedTexture *self = META_SHAPED_TEXTURE (cullable);
set_clip_region (self, NULL);
}
static void
cullable_iface_init (MetaCullableInterface *iface)
{
iface->cull_out = meta_shaped_texture_cull_out;
iface->reset_culling = meta_shaped_texture_reset_culling;
}
ClutterActor *
meta_shaped_texture_new (void)
{
return g_object_new (META_TYPE_SHAPED_TEXTURE, NULL);
}
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