mirror of
https://github.com/brl/mutter.git
synced 2024-11-24 17:10:40 -05:00
remove texture tower
This commit is contained in:
Jasper St. Pierre
parent
ce0c6b8d9f
commit
2b8e75ad48
@ -65,8 +65,6 @@ libmutter_la_SOURCES = \
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compositor/meta-shaped-texture.c \
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compositor/meta-shaped-texture.c \
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compositor/meta-texture-rectangle.c \
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compositor/meta-texture-rectangle.c \
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compositor/meta-texture-rectangle.h \
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compositor/meta-texture-rectangle.h \
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compositor/meta-texture-tower.c \
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compositor/meta-texture-tower.h \
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compositor/meta-window-actor.c \
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compositor/meta-window-actor.c \
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compositor/meta-window-actor-private.h \
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compositor/meta-window-actor-private.h \
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compositor/meta-window-group.c \
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compositor/meta-window-group.c \
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@ -1,10 +0,0 @@
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Intro
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=====
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Fix me.
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Env Vars
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========
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MUTTER_DISABLE_MIPMAPS - set to disable use of mipmaped windows.
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@ -31,7 +31,6 @@ struct _MetaCompositor
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guint server_time_is_monotonic_time : 1;
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guint server_time_is_monotonic_time : 1;
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guint show_redraw : 1;
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guint show_redraw : 1;
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guint debug : 1;
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guint debug : 1;
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guint no_mipmaps : 1;
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};
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};
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struct _MetaCompScreen
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struct _MetaCompScreen
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@ -1532,9 +1532,6 @@ meta_compositor_new (MetaDisplay *display)
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compositor->display = display;
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compositor->display = display;
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if (g_getenv("META_DISABLE_MIPMAPS"))
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compositor->no_mipmaps = TRUE;
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meta_verbose ("Creating %d atoms\n", (int) G_N_ELEMENTS (atom_names));
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meta_verbose ("Creating %d atoms\n", (int) G_N_ELEMENTS (atom_names));
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XInternAtoms (xdisplay, atom_names, G_N_ELEMENTS (atom_names),
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XInternAtoms (xdisplay, atom_names, G_N_ELEMENTS (atom_names),
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False, atoms);
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False, atoms);
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@ -30,7 +30,6 @@
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#include <config.h>
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#include <config.h>
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#include <meta/meta-shaped-texture.h>
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#include <meta/meta-shaped-texture.h>
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#include "meta-texture-tower.h"
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#include <clutter/clutter.h>
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#include <clutter/clutter.h>
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#include <cogl/cogl.h>
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#include <cogl/cogl.h>
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@ -64,7 +63,6 @@ G_DEFINE_TYPE (MetaShapedTexture, meta_shaped_texture,
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struct _MetaShapedTexturePrivate
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struct _MetaShapedTexturePrivate
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{
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{
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MetaTextureTower *paint_tower;
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Pixmap pixmap;
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Pixmap pixmap;
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CoglTexturePixmapX11 *texture;
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CoglTexturePixmapX11 *texture;
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CoglTexture *mask_texture;
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CoglTexture *mask_texture;
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@ -74,8 +72,6 @@ struct _MetaShapedTexturePrivate
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cairo_region_t *clip_region;
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cairo_region_t *clip_region;
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guint tex_width, tex_height;
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guint tex_width, tex_height;
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guint create_mipmaps : 1;
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};
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};
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static void
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static void
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@ -102,10 +98,8 @@ meta_shaped_texture_init (MetaShapedTexture *self)
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priv = self->priv = META_SHAPED_TEXTURE_GET_PRIVATE (self);
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priv = self->priv = META_SHAPED_TEXTURE_GET_PRIVATE (self);
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priv->paint_tower = meta_texture_tower_new ();
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priv->texture = NULL;
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priv->texture = NULL;
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priv->mask_texture = NULL;
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priv->mask_texture = NULL;
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priv->create_mipmaps = TRUE;
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}
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}
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static void
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static void
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@ -114,10 +108,6 @@ meta_shaped_texture_dispose (GObject *object)
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MetaShapedTexture *self = (MetaShapedTexture *) object;
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MetaShapedTexture *self = (MetaShapedTexture *) object;
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MetaShapedTexturePrivate *priv = self->priv;
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MetaShapedTexturePrivate *priv = self->priv;
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if (priv->paint_tower)
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meta_texture_tower_free (priv->paint_tower);
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priv->paint_tower = NULL;
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g_clear_pointer (&priv->pipeline, cogl_object_unref);
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g_clear_pointer (&priv->pipeline, cogl_object_unref);
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g_clear_pointer (&priv->pipeline_unshaped, cogl_object_unref);
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g_clear_pointer (&priv->pipeline_unshaped, cogl_object_unref);
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g_clear_pointer (&priv->texture, cogl_object_unref);
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g_clear_pointer (&priv->texture, cogl_object_unref);
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@ -133,7 +123,6 @@ meta_shaped_texture_paint (ClutterActor *actor)
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{
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{
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MetaShapedTexture *stex = (MetaShapedTexture *) actor;
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MetaShapedTexture *stex = (MetaShapedTexture *) actor;
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MetaShapedTexturePrivate *priv = stex->priv;
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MetaShapedTexturePrivate *priv = stex->priv;
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CoglTexture *paint_tex;
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guint tex_width, tex_height;
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guint tex_width, tex_height;
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ClutterActorBox alloc;
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ClutterActorBox alloc;
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@ -148,29 +137,6 @@ meta_shaped_texture_paint (ClutterActor *actor)
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if (!CLUTTER_ACTOR_IS_REALIZED (CLUTTER_ACTOR (stex)))
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if (!CLUTTER_ACTOR_IS_REALIZED (CLUTTER_ACTOR (stex)))
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clutter_actor_realize (CLUTTER_ACTOR (stex));
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clutter_actor_realize (CLUTTER_ACTOR (stex));
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/* The GL EXT_texture_from_pixmap extension does allow for it to be
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* used together with SGIS_generate_mipmap, however this is very
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* rarely supported. Also, even when it is supported there
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* are distinct performance implications from:
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*
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* - Updating mipmaps that we don't need
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* - Having to reallocate pixmaps on the server into larger buffers
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*
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* So, we just unconditionally use our mipmap emulation code. If we
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* wanted to use SGIS_generate_mipmap, we'd have to query COGL to
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* see if it was supported (no API currently), and then if and only
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* if that was the case, set the clutter texture quality to HIGH.
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* Setting the texture quality to high without SGIS_generate_mipmap
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* support for TFP textures will result in fallbacks to XGetImage.
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*/
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if (priv->create_mipmaps)
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paint_tex = meta_texture_tower_get_paint_texture (priv->paint_tower);
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else
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paint_tex = COGL_TEXTURE (priv->texture);
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if (paint_tex == NULL)
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return;
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tex_width = priv->tex_width;
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tex_width = priv->tex_width;
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tex_height = priv->tex_height;
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tex_height = priv->tex_height;
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@ -212,7 +178,10 @@ meta_shaped_texture_paint (ClutterActor *actor)
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cogl_pipeline_set_layer_texture (pipeline, 1, priv->mask_texture);
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cogl_pipeline_set_layer_texture (pipeline, 1, priv->mask_texture);
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}
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}
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cogl_pipeline_set_layer_texture (pipeline, 0, paint_tex);
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cogl_pipeline_set_layer_filters (pipeline, 0,
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COGL_PIPELINE_FILTER_LINEAR_MIPMAP_LINEAR,
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COGL_PIPELINE_FILTER_LINEAR);
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cogl_pipeline_set_layer_texture (pipeline, 0, priv->texture);
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{
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{
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CoglColor color;
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CoglColor color;
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@ -373,28 +342,6 @@ meta_shaped_texture_new (void)
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return self;
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return self;
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}
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}
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void
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meta_shaped_texture_set_create_mipmaps (MetaShapedTexture *stex,
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gboolean create_mipmaps)
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{
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MetaShapedTexturePrivate *priv;
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g_return_if_fail (META_IS_SHAPED_TEXTURE (stex));
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priv = stex->priv;
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create_mipmaps = create_mipmaps != FALSE;
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if (create_mipmaps != priv->create_mipmaps)
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{
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CoglTexture *base_texture;
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priv->create_mipmaps = create_mipmaps;
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base_texture = create_mipmaps ?
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COGL_TEXTURE (priv->texture) : NULL;
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meta_texture_tower_set_base_texture (priv->paint_tower, base_texture);
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}
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}
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void
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void
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meta_shaped_texture_set_mask_texture (MetaShapedTexture *stex,
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meta_shaped_texture_set_mask_texture (MetaShapedTexture *stex,
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CoglTexture *mask_texture)
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CoglTexture *mask_texture)
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@ -434,8 +381,6 @@ meta_shaped_texture_update_area (MetaShapedTexture *stex,
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cogl_texture_pixmap_x11_update_area (priv->texture,
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cogl_texture_pixmap_x11_update_area (priv->texture,
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x, y, width, height);
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x, y, width, height);
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meta_texture_tower_update_area (priv->paint_tower, x, y, width, height);
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clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stex), &clip);
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clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stex), &clip);
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}
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}
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@ -514,10 +459,6 @@ meta_shaped_texture_set_pixmap (MetaShapedTexture *stex,
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}
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}
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else
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else
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set_cogl_texture (stex, NULL);
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set_cogl_texture (stex, NULL);
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if (priv->create_mipmaps)
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meta_texture_tower_set_base_texture (priv->paint_tower,
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COGL_TEXTURE (priv->texture));
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}
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}
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/**
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/**
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@ -1,624 +0,0 @@
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* MetaTextureTower
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*
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* Mipmap emulation by creation of scaled down images
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*
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* Copyright (C) 2009 Red Hat, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include <math.h>
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#include <string.h>
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#include "meta-texture-tower.h"
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#include "meta-texture-rectangle.h"
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#ifndef M_LOG2E
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#define M_LOG2E 1.4426950408889634074
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#endif
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#define MAX_TEXTURE_LEVELS 12
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/* If the texture format in memory doesn't match this, then Mesa
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* will do the conversion, so things will still work, but it might
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* be slow depending on how efficient Mesa is. These should be the
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* native formats unless the display is 16bpp. If conversions
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* here are a bottleneck, investigate whether we are converting when
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* storing window data *into* the texture before adding extra code
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* to handle multiple texture formats.
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*/
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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#define TEXTURE_FORMAT COGL_PIXEL_FORMAT_BGRA_8888_PRE
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#else
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#define TEXTURE_FORMAT COGL_PIXEL_FORMAT_ARGB_8888_PRE
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#endif
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typedef struct
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{
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guint16 x1;
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guint16 y1;
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guint16 x2;
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guint16 y2;
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} Box;
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struct _MetaTextureTower
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{
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int n_levels;
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CoglTexture *textures[MAX_TEXTURE_LEVELS];
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CoglOffscreen *fbos[MAX_TEXTURE_LEVELS];
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Box invalid[MAX_TEXTURE_LEVELS];
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};
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/**
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* meta_texture_tower_new:
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*
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* Creates a new texture tower. The base texture has to be set with
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* meta_texture_tower_set_base_texture() before use.
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*
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* Return value: the new texture tower. Free with meta_texture_tower_free()
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*/
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MetaTextureTower *
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meta_texture_tower_new (void)
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{
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MetaTextureTower *tower;
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tower = g_slice_new0 (MetaTextureTower);
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return tower;
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}
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/**
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* meta_texture_tower_free:
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* @tower: a #MetaTextureTower
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*
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* Frees a texture tower created with meta_texture_tower_new().
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*/
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void
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meta_texture_tower_free (MetaTextureTower *tower)
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{
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g_return_if_fail (tower != NULL);
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meta_texture_tower_set_base_texture (tower, NULL);
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g_slice_free (MetaTextureTower, tower);
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}
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/**
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* meta_texture_tower_set_base_texture:
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* @tower: a #MetaTextureTower
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* @texture: the new texture used as a base for scaled down versions
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*
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* Sets the base texture that is the scaled texture that the
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* scaled textures of the tower are derived from. The texture itself
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* will be used as level 0 of the tower and will be referenced until
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* unset or until the tower is freed.
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*/
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void
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meta_texture_tower_set_base_texture (MetaTextureTower *tower,
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CoglTexture *texture)
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{
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int i;
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g_return_if_fail (tower != NULL);
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if (texture == tower->textures[0])
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return;
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if (tower->textures[0] != NULL)
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{
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for (i = 1; i < tower->n_levels; i++)
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{
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if (tower->textures[i] != NULL)
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{
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cogl_object_unref (tower->textures[i]);
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tower->textures[i] = NULL;
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}
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if (tower->fbos[i] != NULL)
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{
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cogl_object_unref (tower->fbos[i]);
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tower->fbos[i] = NULL;
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}
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}
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cogl_object_unref (tower->textures[0]);
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}
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tower->textures[0] = texture;
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if (tower->textures[0] != NULL)
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{
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int width, height;
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cogl_object_ref (tower->textures[0]);
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width = cogl_texture_get_width (tower->textures[0]);
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height = cogl_texture_get_height (tower->textures[0]);
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tower->n_levels = 1 + MAX ((int)(M_LOG2E * log (width)), (int)(M_LOG2E * log (height)));
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tower->n_levels = MIN(tower->n_levels, MAX_TEXTURE_LEVELS);
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meta_texture_tower_update_area (tower, 0, 0, width, height);
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}
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else
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{
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tower->n_levels = 0;
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}
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}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* meta_texture_tower_update_area:
|
|
||||||
* @tower: a #MetaTextureTower
|
|
||||||
* @x: X coordinate of upper left of rectangle that changed
|
|
||||||
* @y: Y coordinate of upper left of rectangle that changed
|
|
||||||
* @width: width of rectangle that changed
|
|
||||||
* @height: height rectangle that changed
|
|
||||||
*
|
|
||||||
* Mark a region of the base texture as having changed; the next
|
|
||||||
* time a scaled down version of the base texture is retrieved,
|
|
||||||
* the appropriate area of the scaled down texture will be updated.
|
|
||||||
*/
|
|
||||||
void
|
|
||||||
meta_texture_tower_update_area (MetaTextureTower *tower,
|
|
||||||
int x,
|
|
||||||
int y,
|
|
||||||
int width,
|
|
||||||
int height)
|
|
||||||
{
|
|
||||||
int texture_width, texture_height;
|
|
||||||
Box invalid;
|
|
||||||
int i;
|
|
||||||
|
|
||||||
g_return_if_fail (tower != NULL);
|
|
||||||
|
|
||||||
if (tower->textures[0] == NULL)
|
|
||||||
return;
|
|
||||||
|
|
||||||
texture_width = cogl_texture_get_width (tower->textures[0]);
|
|
||||||
texture_height = cogl_texture_get_height (tower->textures[0]);
|
|
||||||
|
|
||||||
invalid.x1 = x;
|
|
||||||
invalid.y1 = y;
|
|
||||||
invalid.x2 = x + width;
|
|
||||||
invalid.y2 = y + height;
|
|
||||||
|
|
||||||
for (i = 1; i < tower->n_levels; i++)
|
|
||||||
{
|
|
||||||
texture_width = MAX (1, texture_width / 2);
|
|
||||||
texture_height = MAX (1, texture_height / 2);
|
|
||||||
|
|
||||||
invalid.x1 = invalid.x1 / 2;
|
|
||||||
invalid.y1 = invalid.y1 / 2;
|
|
||||||
invalid.x2 = MIN (texture_width, (invalid.x2 + 1) / 2);
|
|
||||||
invalid.y2 = MIN (texture_height, (invalid.y2 + 1) / 2);
|
|
||||||
|
|
||||||
if (tower->invalid[i].x1 == tower->invalid[i].x2 ||
|
|
||||||
tower->invalid[i].y1 == tower->invalid[i].y2)
|
|
||||||
{
|
|
||||||
tower->invalid[i] = invalid;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
tower->invalid[i].x1 = MIN (tower->invalid[i].x1, invalid.x1);
|
|
||||||
tower->invalid[i].y1 = MIN (tower->invalid[i].y1, invalid.y1);
|
|
||||||
tower->invalid[i].x2 = MAX (tower->invalid[i].x2, invalid.x2);
|
|
||||||
tower->invalid[i].y2 = MAX (tower->invalid[i].y2, invalid.y2);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/* It generally looks worse if we scale up a window texture by even a
|
|
||||||
* small amount than if we scale it down using bilinear filtering, so
|
|
||||||
* we always pick the *larger* adjacent level. */
|
|
||||||
#define LOD_BIAS (-0.49)
|
|
||||||
|
|
||||||
/* This determines the appropriate level of detail to use when drawing the
|
|
||||||
* texture, in a way that corresponds to what the GL specification does
|
|
||||||
* when mip-mapping. This is probably fancier and slower than what we need,
|
|
||||||
* but we do the computation only once each time we paint a window, and
|
|
||||||
* its easier to just use the equations from the specification than to
|
|
||||||
* come up with something simpler.
|
|
||||||
*
|
|
||||||
* If window is being painted at an angle from the viewer, then we have to
|
|
||||||
* pick a point in the texture; we use the middle of the texture (which is
|
|
||||||
* why the width/height are passed in.) This is not the normal case for
|
|
||||||
* Meta.
|
|
||||||
*/
|
|
||||||
static int
|
|
||||||
get_paint_level (int width, int height)
|
|
||||||
{
|
|
||||||
CoglMatrix projection, modelview, pm;
|
|
||||||
float v[4];
|
|
||||||
double viewport_width, viewport_height;
|
|
||||||
double u0, v0;
|
|
||||||
double xc, yc, wc;
|
|
||||||
double dxdu_, dxdv_, dydu_, dydv_;
|
|
||||||
double det_, det_sq;
|
|
||||||
double rho_sq;
|
|
||||||
double lambda;
|
|
||||||
|
|
||||||
/* See
|
|
||||||
* http://www.opengl.org/registry/doc/glspec32.core.20090803.pdf
|
|
||||||
* Section 3.8.9, p. 1.6.2. Here we have
|
|
||||||
*
|
|
||||||
* u(x,y) = x_o;
|
|
||||||
* v(x,y) = y_o;
|
|
||||||
*
|
|
||||||
* Since we are mapping 1:1 from object coordinates into pixel
|
|
||||||
* texture coordinates, the clip coordinates are:
|
|
||||||
*
|
|
||||||
* (x_c) (x_o) (u)
|
|
||||||
* (y_c) = (M_projection)(M_modelview) (y_o) = (PM) (v)
|
|
||||||
* (z_c) (z_o) (0)
|
|
||||||
* (w_c) (w_o) (1)
|
|
||||||
*/
|
|
||||||
|
|
||||||
cogl_get_projection_matrix (&projection);
|
|
||||||
cogl_get_modelview_matrix (&modelview);
|
|
||||||
|
|
||||||
cogl_matrix_multiply (&pm, &projection, &modelview);
|
|
||||||
|
|
||||||
cogl_get_viewport (v);
|
|
||||||
viewport_width = v[2];
|
|
||||||
viewport_height = v[3];
|
|
||||||
|
|
||||||
u0 = width / 2.;
|
|
||||||
v0 = height / 2.;
|
|
||||||
|
|
||||||
xc = pm.xx * u0 + pm.xy * v0 + pm.xw;
|
|
||||||
yc = pm.yx * u0 + pm.yy * v0 + pm.yw;
|
|
||||||
wc = pm.wx * u0 + pm.wy * v0 + pm.ww;
|
|
||||||
|
|
||||||
/* We'll simplify the equations below for a bit of micro-optimization.
|
|
||||||
* The commented out code is the unsimplified version.
|
|
||||||
|
|
||||||
// Partial derivates of window coordinates:
|
|
||||||
//
|
|
||||||
// x_w = 0.5 * viewport_width * x_c / w_c + viewport_center_x
|
|
||||||
// y_w = 0.5 * viewport_height * y_c / w_c + viewport_center_y
|
|
||||||
//
|
|
||||||
// with respect to u, v, using
|
|
||||||
// d(a/b)/dx = da/dx * (1/b) - a * db/dx / (b^2)
|
|
||||||
|
|
||||||
dxdu = 0.5 * viewport_width * (pm.xx - pm.wx * (xc/wc)) / wc;
|
|
||||||
dxdv = 0.5 * viewport_width * (pm.xy - pm.wy * (xc/wc)) / wc;
|
|
||||||
dydu = 0.5 * viewport_height * (pm.yx - pm.wx * (yc/wc)) / wc;
|
|
||||||
dydv = 0.5 * viewport_height * (pm.yy - pm.wy * (yc/wc)) / wc;
|
|
||||||
|
|
||||||
// Compute the inverse partials as the matrix inverse
|
|
||||||
det = dxdu * dydv - dxdv * dydu;
|
|
||||||
|
|
||||||
dudx = dydv / det;
|
|
||||||
dudy = - dxdv / det;
|
|
||||||
dvdx = - dydu / det;
|
|
||||||
dvdy = dvdu / det;
|
|
||||||
|
|
||||||
// Scale factor; maximum of the distance in texels for a change of 1 pixel
|
|
||||||
// in the X direction or 1 pixel in the Y direction
|
|
||||||
rho = MAX (sqrt (dudx * dudx + dvdx * dvdx), sqrt(dudy * dudy + dvdy * dvdy));
|
|
||||||
|
|
||||||
// Level of detail
|
|
||||||
lambda = log2 (rho) + LOD_BIAS;
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* dxdu * wc, etc */
|
|
||||||
dxdu_ = 0.5 * viewport_width * (pm.xx - pm.wx * (xc/wc));
|
|
||||||
dxdv_ = 0.5 * viewport_width * (pm.xy - pm.wy * (xc/wc));
|
|
||||||
dydu_ = 0.5 * viewport_height * (pm.yx - pm.wx * (yc/wc));
|
|
||||||
dydv_ = 0.5 * viewport_height * (pm.yy - pm.wy * (yc/wc));
|
|
||||||
|
|
||||||
/* det * wc^2 */
|
|
||||||
det_ = dxdu_ * dydv_ - dxdv_ * dydu_;
|
|
||||||
det_sq = det_ * det_;
|
|
||||||
if (det_sq == 0.0)
|
|
||||||
return -1;
|
|
||||||
|
|
||||||
/* (rho * det * wc)^2 */
|
|
||||||
rho_sq = MAX (dydv_ * dydv_ + dydu_ * dydu_, dxdv_ * dxdv_ + dxdu_ * dxdu_);
|
|
||||||
lambda = 0.5 * M_LOG2E * log (rho_sq * wc * wc / det_sq) + LOD_BIAS;
|
|
||||||
|
|
||||||
#if 0
|
|
||||||
g_print ("%g %g %g\n", 0.5 * viewport_width * pm.xx / pm.ww, 0.5 * viewport_height * pm.yy / pm.ww, lambda);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
if (lambda <= 0.)
|
|
||||||
return 0;
|
|
||||||
else
|
|
||||||
return (int)(0.5 + lambda);
|
|
||||||
}
|
|
||||||
|
|
||||||
static gboolean
|
|
||||||
is_power_of_two (int x)
|
|
||||||
{
|
|
||||||
return (x & (x - 1)) == 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
|
||||||
texture_tower_create_texture (MetaTextureTower *tower,
|
|
||||||
int level,
|
|
||||||
int width,
|
|
||||||
int height)
|
|
||||||
{
|
|
||||||
if ((!is_power_of_two (width) || !is_power_of_two (height)) &&
|
|
||||||
meta_texture_rectangle_check (tower->textures[level - 1]))
|
|
||||||
{
|
|
||||||
tower->textures[level] =
|
|
||||||
meta_texture_rectangle_new (width, height,
|
|
||||||
/* data format */
|
|
||||||
TEXTURE_FORMAT,
|
|
||||||
/* internal cogl format */
|
|
||||||
TEXTURE_FORMAT,
|
|
||||||
/* rowstride */
|
|
||||||
width * 4,
|
|
||||||
/* data */
|
|
||||||
NULL,
|
|
||||||
/* error */
|
|
||||||
NULL);
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
tower->textures[level] = cogl_texture_new_with_size (width, height,
|
|
||||||
COGL_TEXTURE_NO_AUTO_MIPMAP,
|
|
||||||
TEXTURE_FORMAT);
|
|
||||||
}
|
|
||||||
|
|
||||||
tower->invalid[level].x1 = 0;
|
|
||||||
tower->invalid[level].y1 = 0;
|
|
||||||
tower->invalid[level].x2 = width;
|
|
||||||
tower->invalid[level].y2 = height;
|
|
||||||
}
|
|
||||||
|
|
||||||
static gboolean
|
|
||||||
texture_tower_revalidate_fbo (MetaTextureTower *tower,
|
|
||||||
int level)
|
|
||||||
{
|
|
||||||
CoglTexture *source_texture = tower->textures[level - 1];
|
|
||||||
int source_texture_width = cogl_texture_get_width (source_texture);
|
|
||||||
int source_texture_height = cogl_texture_get_height (source_texture);
|
|
||||||
CoglTexture *dest_texture = tower->textures[level];
|
|
||||||
int dest_texture_width = cogl_texture_get_width (dest_texture);
|
|
||||||
int dest_texture_height = cogl_texture_get_height (dest_texture);
|
|
||||||
Box *invalid = &tower->invalid[level];
|
|
||||||
CoglMatrix modelview;
|
|
||||||
|
|
||||||
if (tower->fbos[level] == NULL)
|
|
||||||
tower->fbos[level] = cogl_offscreen_new_to_texture (dest_texture);
|
|
||||||
|
|
||||||
if (tower->fbos[level] == NULL)
|
|
||||||
return FALSE;
|
|
||||||
|
|
||||||
cogl_push_framebuffer (COGL_FRAMEBUFFER (tower->fbos[level]));
|
|
||||||
|
|
||||||
cogl_ortho (0, dest_texture_width, dest_texture_height, 0, -1., 1.);
|
|
||||||
|
|
||||||
cogl_matrix_init_identity (&modelview);
|
|
||||||
cogl_set_modelview_matrix (&modelview);
|
|
||||||
|
|
||||||
cogl_set_source_texture (tower->textures[level - 1]);
|
|
||||||
cogl_rectangle_with_texture_coords (invalid->x1, invalid->y1,
|
|
||||||
invalid->x2, invalid->y2,
|
|
||||||
(2. * invalid->x1) / source_texture_width,
|
|
||||||
(2. * invalid->y1) / source_texture_height,
|
|
||||||
(2. * invalid->x2) / source_texture_width,
|
|
||||||
(2. * invalid->y2) / source_texture_height);
|
|
||||||
|
|
||||||
cogl_pop_framebuffer ();
|
|
||||||
|
|
||||||
return TRUE;
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
|
||||||
fill_copy (guchar *buf,
|
|
||||||
const guchar *source,
|
|
||||||
int width)
|
|
||||||
{
|
|
||||||
memcpy (buf, source, width * 4);
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
|
||||||
fill_scale_down (guchar *buf,
|
|
||||||
const guchar *source,
|
|
||||||
int width)
|
|
||||||
{
|
|
||||||
while (width > 1)
|
|
||||||
{
|
|
||||||
buf[0] = (source[0] + source[4]) / 2;
|
|
||||||
buf[1] = (source[1] + source[5]) / 2;
|
|
||||||
buf[2] = (source[2] + source[6]) / 2;
|
|
||||||
buf[3] = (source[3] + source[7]) / 2;
|
|
||||||
|
|
||||||
buf += 4;
|
|
||||||
source += 8;
|
|
||||||
width -= 2;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (width > 0)
|
|
||||||
{
|
|
||||||
buf[0] = source[0] / 2;
|
|
||||||
buf[1] = source[1] / 2;
|
|
||||||
buf[2] = source[2] / 2;
|
|
||||||
buf[3] = source[3] / 2;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
|
||||||
texture_tower_revalidate_client (MetaTextureTower *tower,
|
|
||||||
int level)
|
|
||||||
{
|
|
||||||
CoglTexture *source_texture = tower->textures[level - 1];
|
|
||||||
int source_texture_width = cogl_texture_get_width (source_texture);
|
|
||||||
int source_texture_height = cogl_texture_get_height (source_texture);
|
|
||||||
guint source_rowstride;
|
|
||||||
guchar *source_data;
|
|
||||||
CoglTexture *dest_texture = tower->textures[level];
|
|
||||||
int dest_texture_width = cogl_texture_get_width (dest_texture);
|
|
||||||
int dest_texture_height = cogl_texture_get_height (dest_texture);
|
|
||||||
int dest_x = tower->invalid[level].x1;
|
|
||||||
int dest_y = tower->invalid[level].y1;
|
|
||||||
int dest_width = tower->invalid[level].x2 - tower->invalid[level].x1;
|
|
||||||
int dest_height = tower->invalid[level].y2 - tower->invalid[level].y1;
|
|
||||||
guchar *dest_data;
|
|
||||||
guchar *source_tmp1 = NULL, *source_tmp2 = NULL;
|
|
||||||
int i, j;
|
|
||||||
|
|
||||||
source_rowstride = source_texture_width * 4;
|
|
||||||
|
|
||||||
source_data = g_malloc (source_texture_height * source_rowstride);
|
|
||||||
cogl_texture_get_data (source_texture, TEXTURE_FORMAT, source_rowstride,
|
|
||||||
source_data);
|
|
||||||
|
|
||||||
dest_data = g_malloc (dest_height * dest_width * 4);
|
|
||||||
|
|
||||||
if (dest_texture_height < source_texture_height)
|
|
||||||
{
|
|
||||||
source_tmp1 = g_malloc (dest_width * 4);
|
|
||||||
source_tmp2 = g_malloc (dest_width * 4);
|
|
||||||
}
|
|
||||||
|
|
||||||
for (i = 0; i < dest_height; i++)
|
|
||||||
{
|
|
||||||
guchar *dest_row = dest_data + i * dest_width * 4;
|
|
||||||
if (dest_texture_height < source_texture_height)
|
|
||||||
{
|
|
||||||
guchar *source1, *source2;
|
|
||||||
guchar *dest;
|
|
||||||
|
|
||||||
if (dest_texture_width < source_texture_width)
|
|
||||||
{
|
|
||||||
fill_scale_down (source_tmp1,
|
|
||||||
source_data + ((i + dest_y) * 2) * source_rowstride + dest_x * 2 * 4,
|
|
||||||
dest_width * 2);
|
|
||||||
fill_scale_down (source_tmp2,
|
|
||||||
source_data + ((i + dest_y) * 2 + 1) * source_rowstride + dest_x * 2 * 4,
|
|
||||||
dest_width * 2);
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
fill_copy (source_tmp1,
|
|
||||||
source_data + ((i + dest_y) * 2) * source_rowstride + dest_x * 4,
|
|
||||||
dest_width);
|
|
||||||
fill_copy (source_tmp2,
|
|
||||||
source_data + ((i + dest_y) * 2 + 1) * source_rowstride + dest_x * 4,
|
|
||||||
dest_width);
|
|
||||||
}
|
|
||||||
|
|
||||||
source1 = source_tmp1;
|
|
||||||
source2 = source_tmp2;
|
|
||||||
|
|
||||||
dest = dest_row;
|
|
||||||
for (j = 0; j < dest_width * 4; j++)
|
|
||||||
*(dest++) = (*(source1++) + *(source2++)) / 2;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
if (dest_texture_width < source_texture_width)
|
|
||||||
fill_scale_down (dest_row,
|
|
||||||
source_data + (i + dest_y) * source_rowstride + dest_x * 2 * 4,
|
|
||||||
dest_width * 2);
|
|
||||||
else
|
|
||||||
fill_copy (dest_row,
|
|
||||||
source_data + (i + dest_y) * source_rowstride,
|
|
||||||
dest_width);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
cogl_texture_set_region (dest_texture,
|
|
||||||
0, 0,
|
|
||||||
dest_x, dest_y,
|
|
||||||
dest_width, dest_height,
|
|
||||||
dest_width, dest_height,
|
|
||||||
TEXTURE_FORMAT,
|
|
||||||
4 * dest_width,
|
|
||||||
dest_data);
|
|
||||||
|
|
||||||
if (dest_texture_height < source_texture_height)
|
|
||||||
{
|
|
||||||
g_free (source_tmp1);
|
|
||||||
g_free (source_tmp2);
|
|
||||||
}
|
|
||||||
|
|
||||||
g_free (source_data);
|
|
||||||
g_free (dest_data);
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
|
||||||
texture_tower_revalidate (MetaTextureTower *tower,
|
|
||||||
int level)
|
|
||||||
{
|
|
||||||
if (!texture_tower_revalidate_fbo (tower, level))
|
|
||||||
texture_tower_revalidate_client (tower, level);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* meta_texture_tower_get_paint_texture:
|
|
||||||
* @tower: a #MetaTextureTower
|
|
||||||
*
|
|
||||||
* Gets the texture from the tower that best matches the current
|
|
||||||
* rendering scale. (On the assumption here the texture is going to
|
|
||||||
* be rendered with vertex coordinates that correspond to its
|
|
||||||
* size in pixels, so a 200x200 texture will be rendered on the
|
|
||||||
* rectangle (0, 0, 200, 200).
|
|
||||||
*
|
|
||||||
* Return value: the COGL texture handle to use for painting, or
|
|
||||||
* %NULL if no base texture has yet been set.
|
|
||||||
*/
|
|
||||||
CoglTexture *
|
|
||||||
meta_texture_tower_get_paint_texture (MetaTextureTower *tower)
|
|
||||||
{
|
|
||||||
int texture_width, texture_height;
|
|
||||||
int level;
|
|
||||||
|
|
||||||
g_return_val_if_fail (tower != NULL, NULL);
|
|
||||||
|
|
||||||
if (tower->textures[0] == NULL)
|
|
||||||
return NULL;
|
|
||||||
|
|
||||||
texture_width = cogl_texture_get_width (tower->textures[0]);
|
|
||||||
texture_height = cogl_texture_get_height (tower->textures[0]);
|
|
||||||
|
|
||||||
level = get_paint_level(texture_width, texture_height);
|
|
||||||
if (level < 0) /* singular paint matrix, scaled to nothing */
|
|
||||||
return NULL;
|
|
||||||
level = MIN (level, tower->n_levels - 1);
|
|
||||||
|
|
||||||
if (tower->textures[level] == NULL ||
|
|
||||||
(tower->invalid[level].x2 != tower->invalid[level].x1 &&
|
|
||||||
tower->invalid[level].y2 != tower->invalid[level].y1))
|
|
||||||
{
|
|
||||||
int i;
|
|
||||||
|
|
||||||
for (i = 1; i <= level; i++)
|
|
||||||
{
|
|
||||||
/* Use "floor" convention here to be consistent with the NPOT texture extension */
|
|
||||||
texture_width = MAX (1, texture_width / 2);
|
|
||||||
texture_height = MAX (1, texture_height / 2);
|
|
||||||
|
|
||||||
if (tower->textures[i] == NULL)
|
|
||||||
texture_tower_create_texture (tower, i, texture_width, texture_height);
|
|
||||||
}
|
|
||||||
|
|
||||||
for (i = 1; i <= level; i++)
|
|
||||||
{
|
|
||||||
if (tower->invalid[level].x2 != tower->invalid[level].x1 &&
|
|
||||||
tower->invalid[level].y2 != tower->invalid[level].y1)
|
|
||||||
texture_tower_revalidate (tower, i);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
return tower->textures[level];
|
|
||||||
}
|
|
||||||
@ -1,69 +0,0 @@
|
|||||||
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
|
|
||||||
/*
|
|
||||||
* MetaTextureTower
|
|
||||||
*
|
|
||||||
* Mipmap emulation by creation of scaled down images
|
|
||||||
*
|
|
||||||
* Copyright (C) 2009 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, write to the Free Software
|
|
||||||
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
|
|
||||||
* 02111-1307, USA.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifndef __META_TEXTURE_TOWER_H__
|
|
||||||
#define __META_TEXTURE_TOWER_H__
|
|
||||||
|
|
||||||
#include <clutter/clutter.h>
|
|
||||||
|
|
||||||
G_BEGIN_DECLS
|
|
||||||
|
|
||||||
/**
|
|
||||||
* SECTION:MetaTextureTower
|
|
||||||
* @short_description: mipmap emulation by creation of scaled down images
|
|
||||||
*
|
|
||||||
* A #MetaTextureTower is used to get good looking scaled down images when
|
|
||||||
* we can't use the GL drivers mipmap support. There are two separate reasons
|
|
||||||
*
|
|
||||||
* - Some cards (including radeon cards <= r5xx) only support
|
|
||||||
* TEXTURE_RECTANGLE_ARB and not NPOT textures. Rectangular textures
|
|
||||||
* are defined not to support mipmapping.
|
|
||||||
* - Even when NPOT textures are available, the combination of NPOT
|
|
||||||
* textures, texture_from_pixmap, and mipmapping doesn't typically
|
|
||||||
* work, since the X server doesn't allocate pixmaps in the right
|
|
||||||
* layout for mipmapping.
|
|
||||||
*
|
|
||||||
* So, what we do is create the "mipmap" levels ourselves by successive
|
|
||||||
* power-of-two scaledowns, and when rendering pick the single texture
|
|
||||||
* that best matches the scale we are rendering at. (Since we aren't
|
|
||||||
* typically using perspective transforms, we'll frequently have a single
|
|
||||||
* scale for the entire texture.)
|
|
||||||
*/
|
|
||||||
|
|
||||||
typedef struct _MetaTextureTower MetaTextureTower;
|
|
||||||
|
|
||||||
MetaTextureTower *meta_texture_tower_new (void);
|
|
||||||
void meta_texture_tower_free (MetaTextureTower *tower);
|
|
||||||
void meta_texture_tower_set_base_texture (MetaTextureTower *tower,
|
|
||||||
CoglTexture *texture);
|
|
||||||
void meta_texture_tower_update_area (MetaTextureTower *tower,
|
|
||||||
int x,
|
|
||||||
int y,
|
|
||||||
int width,
|
|
||||||
int height);
|
|
||||||
CoglTexture *meta_texture_tower_get_paint_texture (MetaTextureTower *tower);
|
|
||||||
|
|
||||||
G_BEGIN_DECLS
|
|
||||||
|
|
||||||
#endif /* __META_TEXTURE_TOWER_H__ */
|
|
||||||
@ -1782,10 +1782,6 @@ check_needs_pixmap (MetaWindowActor *self)
|
|||||||
goto out;
|
goto out;
|
||||||
}
|
}
|
||||||
|
|
||||||
if (compositor->no_mipmaps)
|
|
||||||
meta_shaped_texture_set_create_mipmaps (META_SHAPED_TEXTURE (priv->actor),
|
|
||||||
FALSE);
|
|
||||||
|
|
||||||
meta_shaped_texture_set_pixmap (META_SHAPED_TEXTURE (priv->actor),
|
meta_shaped_texture_set_pixmap (META_SHAPED_TEXTURE (priv->actor),
|
||||||
priv->back_pixmap);
|
priv->back_pixmap);
|
||||||
|
|
||||||
|
|||||||
@ -66,9 +66,6 @@ GType meta_shaped_texture_get_type (void) G_GNUC_CONST;
|
|||||||
|
|
||||||
ClutterActor *meta_shaped_texture_new (void);
|
ClutterActor *meta_shaped_texture_new (void);
|
||||||
|
|
||||||
void meta_shaped_texture_set_create_mipmaps (MetaShapedTexture *stex,
|
|
||||||
gboolean create_mipmaps);
|
|
||||||
|
|
||||||
void meta_shaped_texture_update_area (MetaShapedTexture *stex,
|
void meta_shaped_texture_update_area (MetaShapedTexture *stex,
|
||||||
int x,
|
int x,
|
||||||
int y,
|
int y,
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user