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mutter/clutter/clutter-texture.c
Emmanuele Bassi 454e493197 Fix various compiler warnings 
Most of these fixes are simple symbol shadowing issues, like index and the
braindead y0 and y1 extern symbols exported by math.h on GNU libc systems.

There is a masking issue in ClutterTexture which should be checked; I ran
the tests and everything looked fine.

The rest are just unused variables.
2007-07-26 11:04:04 +00:00

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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Matthew Allum <mallum@openedhand.com>
*
* Copyright (C) 2006 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:clutter-texture
* @short_description: An actor for displaying and manipulating images.
*
* #ClutterTexture is a base class for displaying and manipulating pixel
* buffer type data.
*
* The clutter_texture_set_from_rgb_data() and clutter_texture_set_pixbuf()
* functions are used to copy image data into texture memory and subsequently
* realize the the texture.
*
* If texture reads are supported by underlying GL implementation,
* unrealizing/hiding frees image data from texture memory moving to main
* system memory. Re-realizing then performs the opposite operation.
* This process allows basic management of commonly limited available texture
* memory.
*/
#include "config.h"
#include "clutter-texture.h"
#include "clutter-main.h"
#include "clutter-marshal.h"
#include "clutter-feature.h"
#include "clutter-util.h"
#include "clutter-private.h"
#include "clutter-debug.h"
#include "clutter-fixed.h"
#include "cogl.h"
G_DEFINE_TYPE (ClutterTexture, clutter_texture, CLUTTER_TYPE_ACTOR);
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
#define PIXEL_TYPE CGL_UNSIGNED_BYTE
#else
#define PIXEL_TYPE CGL_UNSIGNED_INT_8_8_8_8_REV
#endif
typedef struct {
gint pos;
gint size;
gint waste;
} ClutterTextureTileDimension;
#define CLUTTER_TEXTURE_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_TEXTURE, ClutterTexturePrivate))
struct _ClutterTexturePrivate
{
gint width;
gint height;
COGLenum pixel_format;
COGLenum pixel_type;
COGLenum target_type;
GdkPixbuf *local_pixbuf; /* non video memory copy */
guint sync_actor_size : 1;
gint max_tile_waste;
guint filter_quality;
guint repeat_x : 1; /* non working */
guint repeat_y : 1; /* non working */
guint is_tiled : 1;
ClutterTextureTileDimension *x_tiles;
ClutterTextureTileDimension *y_tiles;
gint n_x_tiles;
gint n_y_tiles;
guint *tiles;
};
enum
{
PROP_0,
PROP_PIXBUF,
PROP_USE_TILES,
PROP_MAX_TILE_WASTE,
PROP_PIXEL_TYPE, /* Texture type */
PROP_PIXEL_FORMAT, /* Texture format */
PROP_SYNC_SIZE,
PROP_REPEAT_Y,
PROP_REPEAT_X,
PROP_FILTER_QUALITY
};
enum
{
SIZE_CHANGE,
PIXBUF_CHANGE,
LAST_SIGNAL
};
static int texture_signals[LAST_SIGNAL] = { 0 };
GQuark
clutter_texture_error_quark (void)
{
return g_quark_from_static_string ("clutter-texture-error-quark");
}
static guchar*
un_pre_multiply_alpha (const guchar *data,
gint width,
gint height,
gint rowstride)
{
gint x,y;
unsigned char *ret, *dst, *src;
ret = dst = g_malloc(sizeof(guchar) * height * rowstride);
/* FIXME: Optimise */
for (y = 0; y < height; y++)
{
src = (guchar*)data + y * rowstride;
for (x = 0; x < width; x++)
{
guchar alpha = src[3];
if (alpha == 0)
{
src[0] = src[1] = src[2] = src[3] = alpha;
}
else
{
dst[0] = (((src[0] >> 16) & 0xff) * 255 ) / alpha;
dst[1] = (((src[1] >> 8) & 0xff) * 255 ) / alpha;
dst[2] = (((src[2] >> 0) & 0xff) * 255 ) / alpha;
dst[3] = alpha;
}
dst += 4;
src += 4;
}
}
return ret;
}
#ifndef HAVE_COGL_GL
static guchar *
rgb_to_bgr (const guchar *data,
gboolean has_alpha,
gint width,
gint height,
gint rowstride)
{
gint x,y, bpp = 4;
unsigned char *ret, *dst, *src;
ret = dst = g_malloc(sizeof(guchar) * height * rowstride);
if (!has_alpha)
bpp = 3;
/* FIXME: Optimise */
for (y = 0; y < height; y++)
{
src = (guchar*)data + y * rowstride;
for (x = 0; x < width; x++)
{
dst[0] = src[2];
dst[1] = src[1];
dst[2] = src[0];
if (has_alpha)
dst[3] = src[3];
dst += bpp;
src += bpp;
}
}
return ret;
}
#endif /* !HAVE_COGL_GL */
static int
tile_dimension (int to_fill,
int start_size,
int waste,
ClutterTextureTileDimension *tiles)
{
int pos = 0;
int n_tiles = 0;
int size = start_size;
while (TRUE)
{
if (tiles)
{
tiles[n_tiles].pos = pos;
tiles[n_tiles].size = size;
tiles[n_tiles].waste = 0;
}
n_tiles++;
if (to_fill <= size)
{
if (tiles)
tiles[n_tiles-1].waste = size - to_fill;
break;
}
else
{
to_fill -= size; pos += size;
while (size >= 2 * to_fill || size - to_fill > waste)
size /= 2;
}
}
return n_tiles;
}
static void
texture_init_tiles (ClutterTexture *texture)
{
ClutterTexturePrivate *priv;
gint x_pot, y_pot;
priv = texture->priv;
x_pot = clutter_util_next_p2 (priv->width);
y_pot = clutter_util_next_p2 (priv->height);
while (!(cogl_texture_can_size (CGL_TEXTURE_2D,
priv->pixel_format,
priv->pixel_type,
x_pot, y_pot)
&& (x_pot - priv->width < priv->max_tile_waste)
&& (y_pot - priv->height < priv->max_tile_waste)))
{
CLUTTER_NOTE (TEXTURE, "x_pot:%i - width:%i < max_waste:%i",
x_pot,
priv->width,
priv->max_tile_waste);
CLUTTER_NOTE (TEXTURE, "y_pot:%i - height:%i < max_waste:%i",
y_pot,
priv->height,
priv->max_tile_waste);
if (x_pot > y_pot)
x_pot /= 2;
else
y_pot /= 2;
g_return_if_fail (x_pot != 0 || y_pot != 0);
}
if (priv->x_tiles)
g_free (priv->x_tiles);
priv->n_x_tiles = tile_dimension (priv->width, x_pot,
priv->max_tile_waste, NULL);
priv->x_tiles = g_new (ClutterTextureTileDimension, priv->n_x_tiles);
tile_dimension (priv->width, x_pot, priv->max_tile_waste, priv->x_tiles);
if (priv->y_tiles)
g_free (priv->y_tiles);
priv->n_y_tiles = tile_dimension (priv->height, y_pot,
priv->max_tile_waste, NULL);
priv->y_tiles = g_new (ClutterTextureTileDimension, priv->n_y_tiles);
tile_dimension (priv->height, y_pot, priv->max_tile_waste, priv->y_tiles);
CLUTTER_NOTE (TEXTURE,
"x_pot:%i, width:%i, y_pot:%i, height: %i "
"max_waste:%i, n_x_tiles: %i, n_y_tiles: %i",
x_pot, priv->width, y_pot, priv->height,
priv->max_tile_waste,
priv->n_x_tiles, priv->n_y_tiles);
}
static void
texture_render_to_gl_quad (ClutterTexture *texture,
int x_1,
int y_1,
int x_2,
int y_2)
{
int qx1 = 0, qx2 = 0, qy1 = 0, qy2 = 0;
int qwidth = 0, qheight = 0;
int x, y, i =0, lastx = 0, lasty = 0;
float tx, ty;
ClutterTexturePrivate *priv;
priv = texture->priv;
qwidth = x_2 - x_1;
qheight = y_2 - y_1;
if (!priv->is_tiled)
{
cogl_texture_bind (priv->target_type, priv->tiles[0]);
if (priv->target_type == CGL_TEXTURE_2D) /* POT */
{
tx = (float) priv->width / clutter_util_next_p2 (priv->width);
ty = (float) priv->height / clutter_util_next_p2 (priv->height);
}
else
{
tx = (float) priv->width;
ty = (float) priv->height;
}
qx1 = x_1; qx2 = x_2;
qy1 = y_1; qy2 = y_2;
cogl_texture_quad (x_1, x_2, y_1, y_2,
0,
0,
CLUTTER_FLOAT_TO_FIXED (tx),
CLUTTER_FLOAT_TO_FIXED (ty));
return;
}
for (x = 0; x < priv->n_x_tiles; x++)
{
lasty = 0;
for (y=0; y < priv->n_y_tiles; y++)
{
int actual_w, actual_h;
cogl_texture_bind (priv->target_type, priv->tiles[i]);
actual_w = priv->x_tiles[x].size - priv->x_tiles[x].waste;
actual_h = priv->y_tiles[y].size - priv->y_tiles[y].waste;
CLUTTER_NOTE (TEXTURE,
"rendering text tile x: %i, y: %i - %ix%i",
x, y, actual_w, actual_h);
tx = (float) actual_w / priv->x_tiles[x].size;
ty = (float) actual_h / priv->y_tiles[y].size;
qx1 = x_1 + lastx;
qx2 = qx1 + ((qwidth * actual_w ) / priv->width );
qy1 = y_1 + lasty;
qy2 = qy1 + ((qheight * actual_h) / priv->height );
cogl_texture_quad (qx1, qx2, qy1, qy2,
0,
0,
CLUTTER_FLOAT_TO_FIXED (tx),
CLUTTER_FLOAT_TO_FIXED (ty));
lasty += (qy2 - qy1) ;
i++;
}
lastx += (qx2 - qx1);
}
}
static void
texture_free_gl_resources (ClutterTexture *texture)
{
ClutterTexturePrivate *priv;
priv = texture->priv;
CLUTTER_MARK();
if (priv->tiles)
{
if (!priv->is_tiled)
cogl_textures_destroy (1, priv->tiles);
else
cogl_textures_destroy (priv->n_x_tiles * priv->n_y_tiles, priv->tiles);
g_free (priv->tiles);
priv->tiles = NULL;
}
if (priv->x_tiles)
{
g_free (priv->x_tiles);
priv->x_tiles = NULL;
}
if (priv->y_tiles)
{
g_free (priv->y_tiles);
priv->y_tiles = NULL;
}
}
static void
texture_upload_data (ClutterTexture *texture,
const guchar *data,
gboolean has_alpha,
gint width,
gint height,
gint rowstride,
gint bpp)
{
ClutterTexturePrivate *priv;
gint x, y;
gint i = 0;
gboolean create_textures = FALSE;
GdkPixbuf *master_pixbuf = NULL;
priv = texture->priv;
g_return_if_fail (data != NULL);
CLUTTER_MARK();
if (!priv->is_tiled)
{
/* Single Texture */
if (!priv->tiles)
{
priv->tiles = g_new (guint, 1);
glGenTextures (1, priv->tiles);
create_textures = TRUE;
}
CLUTTER_NOTE (TEXTURE, "syncing for single tile");
cogl_texture_bind (priv->target_type, priv->tiles[0]);
cogl_texture_set_alignment (priv->target_type, 4, priv->width);
cogl_texture_set_filters
(priv->target_type,
priv->filter_quality ? CGL_LINEAR : CGL_NEAREST,
priv->filter_quality ? CGL_LINEAR : CGL_NEAREST);
cogl_texture_set_wrap (priv->target_type,
priv->repeat_x ? CGL_REPEAT : CGL_CLAMP_TO_EDGE,
priv->repeat_y ? CGL_REPEAT : CGL_CLAMP_TO_EDGE);
priv->filter_quality = 1;
if (create_textures)
{
gint tex_width, tex_height;
tex_width = priv->width;
tex_height = priv->height;
if (priv->target_type == CGL_TEXTURE_2D) /* POT */
{
tex_width = clutter_util_next_p2 (priv->width);
tex_height = clutter_util_next_p2 (priv->height);
}
cogl_texture_image_2d (priv->target_type,
CGL_RGBA,
tex_width,
tex_height,
priv->pixel_format,
priv->pixel_type,
NULL);
}
cogl_texture_sub_image_2d (priv->target_type,
0,
0,
width,
height,
priv->pixel_format,
priv->pixel_type,
data);
return;
}
/* Multiple tiled texture */
CLUTTER_NOTE (TEXTURE,
"syncing for multiple tiles for %ix%i pixbuf",
priv->width, priv->height);
g_return_if_fail (priv->x_tiles != NULL && priv->y_tiles != NULL);
master_pixbuf = gdk_pixbuf_new_from_data (data,
GDK_COLORSPACE_RGB,
has_alpha,
8,
width, height, rowstride,
NULL, NULL);
if (priv->tiles == NULL)
{
priv->tiles = g_new (guint, priv->n_x_tiles * priv->n_y_tiles);
glGenTextures (priv->n_x_tiles * priv->n_y_tiles, priv->tiles);
create_textures = TRUE;
}
for (x = 0; x < priv->n_x_tiles; x++)
for (y = 0; y < priv->n_y_tiles; y++)
{
GdkPixbuf *pixtmp;
gint src_h, src_w;
src_w = priv->x_tiles[x].size;
src_h = priv->y_tiles[y].size;
pixtmp = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
has_alpha,
8,
src_w, src_h);
/* clip */
if (priv->x_tiles[x].pos + src_w > priv->width)
src_w = priv->width - priv->x_tiles[x].pos;
if (priv->y_tiles[y].pos + src_h > priv->height)
src_h = priv->height - priv->y_tiles[y].pos;
gdk_pixbuf_copy_area (master_pixbuf,
priv->x_tiles[x].pos,
priv->y_tiles[y].pos,
src_w,
src_h,
pixtmp,
0, 0);
#ifdef CLUTTER_DUMP_TILES
{
gchar *filename;
filename = g_strdup_printf("/tmp/%i-%i-%i.png",
clutter_actor_get_id(CLUTTER_ACTOR(texture)),
x, y);
printf("saving %s\n", filename);
gdk_pixbuf_save (pixtmp, filename , "png", NULL, NULL);
}
#endif
cogl_texture_bind (priv->target_type, priv->tiles[i]);
cogl_texture_set_alignment (priv->target_type, 4, src_w);
cogl_texture_set_filters
(priv->target_type,
priv->filter_quality ? CGL_LINEAR : CGL_NEAREST,
priv->filter_quality ? CGL_LINEAR : CGL_NEAREST);
cogl_texture_set_wrap (priv->target_type,
priv->repeat_x ? CGL_REPEAT : CGL_CLAMP_TO_EDGE,
priv->repeat_y ? CGL_REPEAT : CGL_CLAMP_TO_EDGE);
if (create_textures)
{
cogl_texture_image_2d (priv->target_type,
CGL_RGBA,
gdk_pixbuf_get_width (pixtmp),
gdk_pixbuf_get_height (pixtmp),
priv->pixel_format,
priv->pixel_type,
gdk_pixbuf_get_pixels (pixtmp));
}
else
{
/* Textures already created, so just update whats inside
*/
cogl_texture_sub_image_2d (priv->target_type,
0,
0,
gdk_pixbuf_get_width (pixtmp),
gdk_pixbuf_get_height (pixtmp),
priv->pixel_format,
priv->pixel_type,
gdk_pixbuf_get_pixels (pixtmp));
}
g_object_unref (pixtmp);
i++;
}
g_object_unref (master_pixbuf);
}
static void
clutter_texture_unrealize (ClutterActor *actor)
{
ClutterTexture *texture;
ClutterTexturePrivate *priv;
texture = CLUTTER_TEXTURE(actor);
priv = texture->priv;
if (priv->tiles == NULL)
return;
CLUTTER_MARK();
if (clutter_feature_available (CLUTTER_FEATURE_TEXTURE_READ_PIXELS))
{
/* Move image data from video to main memory.
* GL/ES cant do this - it probably makes sense
* to move this kind of thing into a ClutterProxyTexture
* where this behaviour can be better controlled.
*
* Or make it controllable via a property.
*/
if (priv->local_pixbuf == NULL)
{
priv->local_pixbuf = clutter_texture_get_pixbuf (texture);
CLUTTER_NOTE (TEXTURE, "moved pixels into system (pixbuf) mem");
}
texture_free_gl_resources (texture);
}
CLUTTER_NOTE (TEXTURE, "Texture unrealized");
}
static void
clutter_texture_realize (ClutterActor *actor)
{
ClutterTexture *texture;
ClutterTexturePrivate *priv;
texture = CLUTTER_TEXTURE(actor);
priv = texture->priv;
CLUTTER_MARK();
if (priv->local_pixbuf != NULL)
{
/* Move any local image data we have from unrealization
* back into video memory.
*/
clutter_texture_set_pixbuf (texture, priv->local_pixbuf, NULL);
g_object_unref (priv->local_pixbuf);
priv->local_pixbuf = NULL;
}
else
{
if (clutter_feature_available (CLUTTER_FEATURE_TEXTURE_READ_PIXELS))
{
/* Dont allow realization with no pixbuf - note set_pixbuf/data
* will set realize flags.
*/
CLUTTER_NOTE (TEXTURE,
"Texture has no image data cannot realize");
CLUTTER_NOTE (TEXTURE, "flags %i", actor->flags);
CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
CLUTTER_NOTE (TEXTURE, "flags %i", actor->flags);
return;
}
}
CLUTTER_NOTE (TEXTURE, "Texture realized");
}
static void
clutter_texture_show (ClutterActor *self)
{
ClutterActorClass *parent_class;
/* chain up parent show */
parent_class = CLUTTER_ACTOR_CLASS (clutter_texture_parent_class);
if (parent_class->show)
parent_class->show (self);
clutter_actor_realize (self);
}
static void
clutter_texture_hide (ClutterActor *self)
{
ClutterActorClass *parent_class;
/* chain up parent hide */
parent_class = CLUTTER_ACTOR_CLASS (clutter_texture_parent_class);
if (parent_class->hide)
parent_class->hide (self);
clutter_actor_unrealize (self);
}
static void
clutter_texture_paint (ClutterActor *self)
{
ClutterTexture *texture = CLUTTER_TEXTURE (self);
ClutterTexturePrivate *priv = texture->priv;
gint x_1, y_1, x_2, y_2;
ClutterColor col = { 0xff, 0xff, 0xff, 0xff };
if (!CLUTTER_ACTOR_IS_REALIZED (CLUTTER_ACTOR(texture)))
clutter_actor_realize (CLUTTER_ACTOR(texture));
if (priv->tiles == NULL)
{
/* We just need do debug this state, it doesn't really need to
* throw a an error as what previously happened. Sub classes
* quite likely may not be able to realize.
*/
CLUTTER_NOTE (PAINT, "unable to paint texture '%s', contains no tiles",
clutter_actor_get_name (self)
? clutter_actor_get_name (self)
: "unknown");
return;
}
CLUTTER_NOTE (PAINT,
"painting texture '%s'",
clutter_actor_get_name (self) ? clutter_actor_get_name (self)
: "unknown");
cogl_push_matrix ();
switch (priv->target_type)
{
case CGL_TEXTURE_2D:
cogl_enable (CGL_ENABLE_TEXTURE_2D|CGL_ENABLE_BLEND);
break;
case CGL_TEXTURE_RECTANGLE_ARB:
cogl_enable (CGL_ENABLE_TEXTURE_RECT|CGL_ENABLE_BLEND);
break;
default:
break;
}
col.alpha = clutter_actor_get_opacity (self);
cogl_color (&col);
clutter_actor_get_coords (self, &x_1, &y_1, &x_2, &y_2);
CLUTTER_NOTE (PAINT, "paint to x1: %i, y1: %i x2: %i, y2: %i "
"opacity: %i",
x_1, y_1, x_2, y_2,
clutter_actor_get_opacity (self));
/* Paint will of translated us */
texture_render_to_gl_quad (texture, 0, 0, x_2 - x_1, y_2 - y_1);
cogl_pop_matrix ();
}
static void
clutter_texture_dispose (GObject *object)
{
ClutterTexture *texture = CLUTTER_TEXTURE (object);
ClutterTexturePrivate *priv;
priv = texture->priv;
texture_free_gl_resources (texture);
if (priv->local_pixbuf != NULL)
{
g_object_unref (priv->local_pixbuf);
priv->local_pixbuf = NULL;
}
G_OBJECT_CLASS (clutter_texture_parent_class)->dispose (object);
}
static void
clutter_texture_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterTexture *texture;
ClutterTexturePrivate *priv;
texture = CLUTTER_TEXTURE(object);
priv = texture->priv;
switch (prop_id)
{
case PROP_PIXBUF:
clutter_texture_set_pixbuf (texture,
(GdkPixbuf*)g_value_get_pointer(value),
NULL);
break;
case PROP_USE_TILES:
priv->is_tiled = g_value_get_boolean (value);
if (priv->target_type == CGL_TEXTURE_RECTANGLE_ARB && priv->is_tiled)
priv->target_type = CGL_TEXTURE_2D;
CLUTTER_NOTE (TEXTURE, "Texture is tiled ? %s",
priv->is_tiled ? "yes" : "no");
break;
case PROP_MAX_TILE_WASTE:
priv->max_tile_waste = g_value_get_int (value);
break;
case PROP_SYNC_SIZE:
priv->sync_actor_size = g_value_get_boolean (value);
break;
case PROP_REPEAT_X:
priv->repeat_x = g_value_get_boolean (value);
break;
case PROP_REPEAT_Y:
priv->repeat_y = g_value_get_boolean (value);
break;
case PROP_FILTER_QUALITY:
priv->filter_quality = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
clutter_texture_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterTexture *texture;
ClutterTexturePrivate *priv;
texture = CLUTTER_TEXTURE(object);
priv = texture->priv;
switch (prop_id)
{
case PROP_PIXBUF:
{
GdkPixbuf *pixb;
pixb = clutter_texture_get_pixbuf (texture);
g_value_set_pointer (value, pixb);
}
break;
case PROP_USE_TILES:
g_value_set_boolean (value, priv->is_tiled);
break;
case PROP_MAX_TILE_WASTE:
g_value_set_int (value, priv->max_tile_waste);
break;
case PROP_PIXEL_TYPE:
g_value_set_int (value, priv->pixel_type);
break;
case PROP_PIXEL_FORMAT:
g_value_set_int (value, priv->pixel_format);
break;
case PROP_SYNC_SIZE:
g_value_set_boolean (value, priv->sync_actor_size);
break;
case PROP_REPEAT_X:
g_value_set_boolean (value, priv->repeat_x);
break;
case PROP_REPEAT_Y:
g_value_set_boolean (value, priv->repeat_y);
break;
case PROP_FILTER_QUALITY:
g_value_set_int (value, priv->filter_quality);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
clutter_texture_class_init (ClutterTextureClass *klass)
{
GObjectClass *gobject_class;
ClutterActorClass *actor_class;
gobject_class = (GObjectClass*) klass;
actor_class = (ClutterActorClass*) klass;
g_type_class_add_private (klass, sizeof (ClutterTexturePrivate));
actor_class->paint = clutter_texture_paint;
actor_class->realize = clutter_texture_realize;
actor_class->unrealize = clutter_texture_unrealize;
actor_class->show = clutter_texture_show;
actor_class->hide = clutter_texture_hide;
gobject_class->dispose = clutter_texture_dispose;
gobject_class->set_property = clutter_texture_set_property;
gobject_class->get_property = clutter_texture_get_property;
g_object_class_install_property
(gobject_class, PROP_PIXBUF,
g_param_spec_pointer ("pixbuf",
"Pixbuf source for Texture.",
"Pixbuf source for Texture.",
CLUTTER_PARAM_READWRITE));
g_object_class_install_property
(gobject_class, PROP_USE_TILES,
g_param_spec_boolean ("tiled",
"Enable use of tiled textures",
"Enables the use of tiled GL textures to more "
"efficiently use available texture memory",
/* FIXME: This default set at runtime :/
* As tiling depends on what GL features available.
* Need to figure out better solution
*/
(clutter_feature_available
(CLUTTER_FEATURE_TEXTURE_RECTANGLE) == FALSE),
G_PARAM_CONSTRUCT_ONLY | CLUTTER_PARAM_READWRITE));
g_object_class_install_property
(gobject_class, PROP_SYNC_SIZE,
g_param_spec_boolean ("sync-size",
"Sync size of actor",
"Auto sync size of actor to underlying pixbuf"
"dimentions",
TRUE,
G_PARAM_CONSTRUCT | CLUTTER_PARAM_READWRITE));
g_object_class_install_property
(gobject_class, PROP_REPEAT_X,
g_param_spec_boolean ("repeat-x",
"Tile underlying pixbuf in x direction",
"Reapeat underlying pixbuf rather than scale"
"in x direction. Currently UNWORKING",
FALSE,
G_PARAM_CONSTRUCT | CLUTTER_PARAM_READWRITE));
g_object_class_install_property
(gobject_class, PROP_REPEAT_Y,
g_param_spec_boolean ("repeat-y",
"Tile underlying pixbuf in y direction",
"Reapeat underlying pixbuf rather than scale"
"in y direction. Currently UNWORKING",
FALSE,
G_PARAM_CONSTRUCT | CLUTTER_PARAM_READWRITE));
/* FIXME: Ideally this option needs to have some kind of global
* overide as to imporve performance.
*/
g_object_class_install_property
(gobject_class, PROP_FILTER_QUALITY,
g_param_spec_int ("filter-quality",
"Quality of filter used when scaling a texture",
"Values 0 and 1 current only supported, with 0"
"being lower quality but fast, 1 being better "
"quality but slower. ( Currently just maps to "
" GL_NEAREST / GL_LINEAR )",
0,
G_MAXINT,
1,
G_PARAM_CONSTRUCT | CLUTTER_PARAM_READWRITE));
g_object_class_install_property
(gobject_class, PROP_MAX_TILE_WASTE,
g_param_spec_int ("tile-waste",
"Tile dimention to waste",
"Max wastage dimention of a texture when using "
"tiled textures. Bigger values use less textures, "
"smaller values less texture memory. ",
0,
G_MAXINT,
64,
G_PARAM_CONSTRUCT_ONLY | CLUTTER_PARAM_READWRITE));
g_object_class_install_property
(gobject_class, PROP_PIXEL_TYPE,
g_param_spec_int ("pixel-type",
"Texture Pixel Type",
"GL texture pixel type used",
0,
G_MAXINT,
PIXEL_TYPE,
G_PARAM_READABLE));
g_object_class_install_property
(gobject_class, PROP_PIXEL_FORMAT,
g_param_spec_int ("pixel-format",
"Texture pixel format",
"GL texture pixel format used",
0,
G_MAXINT,
CGL_RGBA,
G_PARAM_READABLE));
/**
* ClutterTexture::size-change:
* @texture: the texture which received the signal
* @width: the width of the new texture
* @height: the height of the new texture
*
* The ::size-change signal is emitted each time the size of the
* pixbuf used by @texture changes. The new size is given as
* argument to the callback.
*/
texture_signals[SIZE_CHANGE] =
g_signal_new ("size-change",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterTextureClass, size_change),
NULL, NULL,
clutter_marshal_VOID__INT_INT,
G_TYPE_NONE,
2, G_TYPE_INT, G_TYPE_INT);
/**
* ClutterTexture::pixbuf-change:
* @texture: the texture which received the signal
*
* The ::pixbuf-change signal is emitted each time the pixbuf
* used by @texture changes.
*/
texture_signals[PIXBUF_CHANGE] =
g_signal_new ("pixbuf-change",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterTextureClass, pixbuf_change),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE,
0);
}
static void
clutter_texture_init (ClutterTexture *self)
{
ClutterTexturePrivate *priv;
self->priv = priv = CLUTTER_TEXTURE_GET_PRIVATE (self);
priv->max_tile_waste = 64;
priv->filter_quality = 0;
priv->is_tiled = TRUE;
priv->pixel_type = PIXEL_TYPE;
priv->pixel_format = CGL_RGBA;
priv->repeat_x = FALSE;
priv->repeat_y = FALSE;
if (clutter_feature_available (CLUTTER_FEATURE_TEXTURE_RECTANGLE))
{
priv->target_type = CGL_TEXTURE_RECTANGLE_ARB;
priv->is_tiled = FALSE;
}
else
priv->target_type = CGL_TEXTURE_2D;
}
static void
pixbuf_destroy_notify (guchar *pixels, gpointer data)
{
g_free (pixels);
}
/**
* clutter_texture_get_pixbuf:
* @texture: A #ClutterTexture
*
* Gets a #GdkPixbuf representation of the #ClutterTexture data.
* The created #GdkPixbuf is not owned by the texture but the caller.
*
* Return value: A #GdkPixbuf
**/
GdkPixbuf*
clutter_texture_get_pixbuf (ClutterTexture* texture)
{
#if HAVE_COGL_GL
ClutterTexturePrivate *priv;
GdkPixbuf *pixbuf = NULL;
guchar *pixels = NULL;
int bpp = 4;
priv = texture->priv;
if (priv->tiles == NULL)
return NULL;
if (priv->pixel_format == CGL_YCBCR_MESA)
return NULL; /* FIXME: convert YUV */
if (priv->pixel_format == CGL_RGB || priv->pixel_format == CGL_BGR)
bpp = 3;
if (!priv->is_tiled)
{
pixels = g_malloc (((priv->width * bpp + 3) &~ 3) * priv->height);
if (!pixels)
return NULL;
glBindTexture(priv->target_type, priv->tiles[0]);
glPixelStorei (GL_UNPACK_ROW_LENGTH, priv->width);
glPixelStorei (GL_UNPACK_ALIGNMENT, 4);
/* read data from gl text and return as pixbuf */
/* No such func in gles... */
glGetTexImage (priv->target_type,
0,
(priv->pixel_format == CGL_RGBA
|| priv->pixel_format == CGL_BGRA) ?
CGL_RGBA : CGL_RGB,
PIXEL_TYPE,
(GLvoid*)pixels);
pixbuf = gdk_pixbuf_new_from_data ((const guchar*)pixels,
GDK_COLORSPACE_RGB,
(priv->pixel_format == CGL_RGBA
|| priv->pixel_format == CGL_BGRA),
8,
priv->width,
priv->height,
((priv->width * bpp + 3) &~ 3),
pixbuf_destroy_notify,
NULL);
}
else
{
int x,y,i;
i = 0;
pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
(priv->pixel_format == CGL_RGBA
|| priv->pixel_format == CGL_BGRA),
8,
priv->width,
priv->height);
for (x = 0; x < priv->n_x_tiles; x++)
for (y = 0; y < priv->n_y_tiles; y++)
{
GdkPixbuf *tmp_pixb;
gint src_h, src_w;
src_w = priv->x_tiles[x].size;
src_h = priv->y_tiles[y].size;
pixels = g_malloc (((src_w * bpp) &~ 3) * src_h);
glBindTexture(priv->target_type, priv->tiles[i]);
glPixelStorei (GL_UNPACK_ROW_LENGTH, src_w);
glPixelStorei (GL_UNPACK_ALIGNMENT, 4);
glGetTexImage (priv->target_type,
0,
(priv->pixel_format == CGL_RGBA
|| priv->pixel_format == CGL_BGRA) ?
CGL_RGBA : CGL_RGB,
PIXEL_TYPE,
(GLvoid *) pixels);
/* Clip */
if (priv->x_tiles[x].pos + src_w > priv->width)
src_w = priv->width - priv->x_tiles[x].pos;
if (priv->y_tiles[y].pos + src_h > priv->height)
src_h = priv->height - priv->y_tiles[y].pos;
tmp_pixb =
gdk_pixbuf_new_from_data ((const guchar*)pixels,
GDK_COLORSPACE_RGB,
(priv->pixel_format == CGL_RGBA
|| priv->pixel_format == CGL_BGRA),
8,
src_w,
src_h,
((src_w * bpp + 3) &~ 3),
pixbuf_destroy_notify,
NULL);
gdk_pixbuf_copy_area (tmp_pixb,
0,
0,
src_w,
src_h,
pixbuf,
priv->x_tiles[x].pos,
priv->x_tiles[y].pos);
g_object_unref (tmp_pixb);
i++;
}
}
return pixbuf;
#else
/* FIXME: func call wont work for GLES...
* features need to reflect this.
*/
return NULL;
#endif
}
/**
* clutter_texture_set_from_rgb_data:
* @texture: A #ClutterTexture
* @data: Image data in RGB type colorspace.
* @has_alpha: Set to TRUE if image data has a alpha channel.
* @width: Width in pixels of image data.
* @height: Height in pixels of image data
* @rowstride: Distance in bytes between row starts.
* @bpp: bytes per pixel ( Currently only 4 supported )
* @flags: #ClutterTextureFlags
* @error: FIXME.
*
* Sets #ClutterTexture image data.
*
* Return value: TRUE on success, FALSE on failure.
*
* Since 0.4. This function is likely to change in future versions.
**/
gboolean
clutter_texture_set_from_rgb_data (ClutterTexture *texture,
const guchar *data,
gboolean has_alpha,
gint width,
gint height,
gint rowstride,
gint bpp,
ClutterTextureFlags flags,
GError **error)
{
ClutterTexturePrivate *priv;
gboolean texture_dirty = TRUE, size_change = FALSE;
COGLenum prev_format;
guchar *copy_data = NULL;
priv = texture->priv;
g_return_val_if_fail (data != NULL, FALSE);
/* Needed for GL_RGBA (internal format) and gdk pixbuf usage */
g_return_val_if_fail (bpp == 4, FALSE);
texture_dirty = size_change =
(width != priv->width || height != priv->height);
prev_format = priv->pixel_format;
if (has_alpha)
priv->pixel_format = CGL_RGBA;
else
priv->pixel_format = CGL_RGB;
if (flags & CLUTTER_TEXTURE_RGB_FLAG_BGR)
{
#if HAVE_COGL_GL
if (has_alpha)
priv->pixel_format = CGL_BGRA;
else
priv->pixel_format = CGL_BGR;
#else
/* GLES has no BGR format*/
copy_data = rgb_to_bgr (data, has_alpha, width, height, rowstride);
#endif /* HAVE_COGL_GL */
}
if (flags & CLUTTER_TEXTURE_RGB_FLAG_PREMULT)
copy_data = un_pre_multiply_alpha (data, width, height, rowstride);
if (prev_format != priv->pixel_format || priv->pixel_type != PIXEL_TYPE)
texture_dirty = TRUE;
priv->pixel_type = PIXEL_TYPE;
priv->width = width;
priv->height = height;
if (texture_dirty)
{
texture_free_gl_resources (texture);
if (priv->is_tiled == FALSE)
{
if (priv->target_type == CGL_TEXTURE_RECTANGLE_ARB &&
!cogl_texture_can_size (CGL_TEXTURE_RECTANGLE_ARB,
priv->pixel_format,
priv->pixel_type,
priv->width,
priv->height))
{
/* If we cant create NPOT tex of this size fall back to tiles */
CLUTTER_NOTE (TEXTURE,
"Cannot make npots of size %ix%i "
"falling back to tiled",
priv->width,
priv->height);
priv->target_type = CGL_TEXTURE_2D;
}
if (priv->target_type == CGL_TEXTURE_2D &&
!cogl_texture_can_size (CGL_TEXTURE_2D,
priv->pixel_format,
priv->pixel_type,
clutter_util_next_p2 (priv->width),
clutter_util_next_p2 (priv->height)))
{
priv->is_tiled = TRUE;
}
}
/* Figure our tiling etc */
if (priv->is_tiled)
texture_init_tiles (texture);
}
CLUTTER_NOTE (TEXTURE, "set size %ix%i\n",
priv->width,
priv->height);
/* Set Error from this */
texture_upload_data (texture,
copy_data != NULL ? copy_data : data,
has_alpha,
width,
height,
rowstride,
bpp);
CLUTTER_ACTOR_SET_FLAGS (CLUTTER_ACTOR (texture), CLUTTER_ACTOR_REALIZED);
if (size_change)
{
g_signal_emit (texture, texture_signals[SIZE_CHANGE],
0, priv->width, priv->height);
if (priv->sync_actor_size)
clutter_actor_set_size (CLUTTER_ACTOR(texture),
priv->width,
priv->height);
}
/* rename signal */
g_signal_emit (texture, texture_signals[PIXBUF_CHANGE], 0);
/* If resized actor may need resizing but paint() will do this */
if (CLUTTER_ACTOR_IS_MAPPED (CLUTTER_ACTOR(texture)))
clutter_actor_queue_redraw (CLUTTER_ACTOR(texture));
if (copy_data != NULL)
g_free (copy_data);
return TRUE;
}
/**
* clutter_texture_set_from_yuv_data:
* @texture: A #ClutterTexture
* @data: Image data in RGB type colorspace.
* @width: Width in pixels of image data.
* @height: Height in pixels of image data
* @flags: #ClutterTextureFlags
* @error: Return location for a #GError, or %NULL.
*
* Sets a #ClutterTexture from YUV image data. If an error occurred,
* %FALSE is returned and @error is set.
*
* This function is likely to change in future versions.
*
* Return value: %TRUE if the texture was successfully updated
*
* Since 0.4.
**/
gboolean
clutter_texture_set_from_yuv_data (ClutterTexture *texture,
const guchar *data,
gint width,
gint height,
ClutterTextureFlags flags,
GError **error)
{
ClutterTexturePrivate *priv;
gboolean texture_dirty = TRUE, size_change = FALSE;
g_return_val_if_fail (CLUTTER_IS_TEXTURE (texture), FALSE);
if (!clutter_feature_available (CLUTTER_FEATURE_TEXTURE_YUV))
{
g_set_error (error, CLUTTER_TEXTURE_ERROR,
CLUTTER_TEXTURE_ERROR_NO_YUV,
"YUV textures are not supported");
return FALSE;
}
priv = texture->priv;
/* FIXME: check other image props */
size_change = (width != priv->width || height != priv->height);
texture_dirty = size_change || (priv->pixel_format != CGL_YCBCR_MESA);
priv->width = width;
priv->height = height;
priv->pixel_type = (flags & CLUTTER_TEXTURE_YUV_FLAG_YUV2) ?
CGL_UNSIGNED_SHORT_8_8_REV_MESA :
CGL_UNSIGNED_SHORT_8_8_MESA;
priv->pixel_format = CGL_YCBCR_MESA;
priv->target_type = CGL_TEXTURE_2D;
if (texture_dirty)
texture_free_gl_resources (texture);
if (!priv->tiles)
{
priv->tiles = g_new (guint, 1);
glGenTextures (1, priv->tiles);
}
cogl_texture_bind (priv->target_type, priv->tiles[0]);
cogl_texture_set_filters (priv->target_type,
priv->filter_quality ? CGL_LINEAR : CGL_NEAREST,
priv->filter_quality ? CGL_LINEAR : CGL_NEAREST);
if (texture_dirty)
{
gint new_width, new_height;
new_width = clutter_util_next_p2 (priv->width);
new_height = clutter_util_next_p2 (priv->height);
/* FIXME: need to check size limits correctly - does not
* seem to work if correct format and type are used so
* this is really a guess...
*/
if (cogl_texture_can_size (CGL_TEXTURE_2D,
CGL_RGBA,
CGL_UNSIGNED_BYTE,
new_width, new_height))
{
cogl_texture_image_2d (priv->target_type,
priv->pixel_format,
new_width, new_height,
priv->pixel_format,
priv->pixel_type,
NULL);
}
else
{
g_set_error (error, CLUTTER_TEXTURE_ERROR,
CLUTTER_TEXTURE_ERROR_OUT_OF_MEMORY,
"Unable to allocate a texture of %d by %d pixels",
new_width,
new_height);
return FALSE; /* FIXME: add tiling */
}
}
cogl_texture_sub_image_2d (priv->target_type,
0,
0,
priv->width,
priv->height,
priv->pixel_format,
priv->pixel_type,
data);
CLUTTER_ACTOR_SET_FLAGS (CLUTTER_ACTOR (texture), CLUTTER_ACTOR_REALIZED);
if (size_change)
{
g_signal_emit (texture, texture_signals[SIZE_CHANGE],
0, priv->width, priv->height);
if (priv->sync_actor_size)
clutter_actor_set_size (CLUTTER_ACTOR(texture),
priv->width,
priv->height);
}
g_signal_emit (texture, texture_signals[PIXBUF_CHANGE], 0);
if (CLUTTER_ACTOR_IS_MAPPED (CLUTTER_ACTOR(texture)))
clutter_actor_queue_redraw (CLUTTER_ACTOR(texture));
return TRUE;
}
/**
* clutter_texture_set_pixbuf:
* @texture: A #ClutterTexture
* @pixbuf: A #GdkPixbuf
* @error: Return location for a #GError, or %NULL
*
* Sets a #ClutterTexture image data from a #GdkPixbuf. In case of
* failure, %FALSE is returned and @error is set.
*
* Return value: %TRUE if the pixbuf was successfully set
*
* Since: 0.4
*/
gboolean
clutter_texture_set_pixbuf (ClutterTexture *texture,
GdkPixbuf *pixbuf,
GError **error)
{
ClutterTexturePrivate *priv;
priv = texture->priv;
g_return_val_if_fail (pixbuf != NULL, FALSE);
return clutter_texture_set_from_rgb_data (texture,
gdk_pixbuf_get_pixels (pixbuf),
gdk_pixbuf_get_has_alpha (pixbuf),
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
gdk_pixbuf_get_rowstride (pixbuf),
4,
0,
error);
}
/**
* clutter_texture_new_from_pixbuf:
* @pixbuf: A #GdkPixbuf
*
* Creates a new #ClutterTexture object.
*
* Return value: A newly created #ClutterTexture object.
**/
ClutterActor*
clutter_texture_new_from_pixbuf (GdkPixbuf *pixbuf)
{
ClutterTexture *texture;
texture = g_object_new (CLUTTER_TYPE_TEXTURE, "pixbuf", pixbuf, NULL);
return CLUTTER_ACTOR(texture);
}
/**
* clutter_texture_new:
*
* Creates a new empty #ClutterTexture object.
*
* Return value: A newly created #ClutterTexture object.
**/
ClutterActor *
clutter_texture_new (void)
{
return g_object_new (CLUTTER_TYPE_TEXTURE, NULL);
}
/**
* clutter_texture_get_base_size:
* @texture: A #ClutterTexture
* @width: Pointer to gint to be populated with width value if non NULL.
* @height: Pointer to gint to be populated with height value if non NULL.
*
* Gets the size in pixels of the untransformed underlying texture pixbuf data.
*
**/
void /* FIXME: rename to get_image_size */
clutter_texture_get_base_size (ClutterTexture *texture,
gint *width,
gint *height)
{
/* Attempt to realize, mainly for subclasses ( such as labels )
* which maynot create pixbuf data and thus base size until
* realization happens.
*/
if (!CLUTTER_ACTOR_IS_REALIZED(CLUTTER_ACTOR(texture)))
clutter_actor_realize (CLUTTER_ACTOR(texture));
if (width)
*width = texture->priv->width;
if (height)
*height = texture->priv->height;
}
/**
* clutter_texture_bind_tile:
* @texture: A #ClutterTexture
* @index_: Tile index to bind
*
* Proxys a call to glBindTexture a to bind an internal 'tile'.
*
* This function is only useful for sub class implementations
* and never should be called by an application.
**/
void
clutter_texture_bind_tile (ClutterTexture *texture,
gint index_)
{
ClutterTexturePrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXTURE (texture));
priv = texture->priv;
cogl_texture_bind (priv->target_type, priv->tiles[index_]);
}
/**
* clutter_texture_get_n_tiles:
* @texture: A #ClutterTexture
* @n_x_tiles: Location to store number of tiles in horizonally axis
* @n_y_tiles: Location to store number of tiles in vertical axis
*
* Retreives internal tile dimentioning.
*
* This function is only useful for sub class implementations
* and never should be called by an application.
**/
void
clutter_texture_get_n_tiles (ClutterTexture *texture,
gint *n_x_tiles,
gint *n_y_tiles)
{
if (n_x_tiles)
*n_x_tiles = texture->priv->n_x_tiles;
if (n_y_tiles)
*n_y_tiles = texture->priv->n_y_tiles;
}
/**
* clutter_texture_get_x_tile_detail:
* @texture: A #ClutterTexture
* @x_index: X index of tile to query
* @pos: Location to store tiles X position
* @size: Location to store tiles horizontal size in pixels
* @waste: Location to store tiles horizontal wastage in pixels
*
* Retreives details of a tile on x axis.
*
* This function is only useful for sub class implementations
* and never should be called by an application.
**/
void
clutter_texture_get_x_tile_detail (ClutterTexture *texture,
gint x_index,
gint *pos,
gint *size,
gint *waste)
{
g_return_if_fail(x_index < texture->priv->n_x_tiles);
if (pos)
*pos = texture->priv->x_tiles[x_index].pos;
if (size)
*size = texture->priv->x_tiles[x_index].size;
if (waste)
*waste = texture->priv->x_tiles[x_index].waste;
}
/**
* clutter_texture_get_y_tile_detail:
* @texture: A #ClutterTexture
* @y_index: Y index of tile to query
* @pos: Location to store tiles Y position
* @size: Location to store tiles vertical size in pixels
* @waste: Location to store tiles vertical wastage in pixels
*
* Retreives details of a tile on y axis.
*
* This function is only useful for sub class implementations
* and never should be called by an application.
**/
void
clutter_texture_get_y_tile_detail (ClutterTexture *texture,
gint y_index,
gint *pos,
gint *size,
gint *waste)
{
ClutterTexturePrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXTURE (texture));
priv = texture->priv;
g_return_if_fail (y_index < priv->n_y_tiles);
if (pos)
*pos = priv->y_tiles[y_index].pos;
if (size)
*size = priv->y_tiles[y_index].size;
if (waste)
*waste = priv->y_tiles[y_index].waste;
}
/**
* clutter_texture_has_generated_tiles:
* @texture: A #ClutterTexture
*
* Checks if #ClutterTexture has generated underlying GL texture tiles.
*
* This function is only useful for sub class implementations
* and never should be called by an application.
*
* Return value: TRUE if texture has pregenerated GL tiles.
**/
gboolean
clutter_texture_has_generated_tiles (ClutterTexture *texture)
{
g_return_val_if_fail (CLUTTER_IS_TEXTURE (texture), FALSE);
return (texture->priv->tiles != NULL);
}
/**
* clutter_texture_is_tiled:
* @texture: A #ClutterTexture
*
* Checks if #ClutterTexture is tiled.
*
* This function is only useful for sub class implementations
* and never should be called by an application.
*
* Return value: TRUE if texture is tiled
**/
gboolean
clutter_texture_is_tiled (ClutterTexture *texture)
{
g_return_val_if_fail (CLUTTER_IS_TEXTURE (texture), FALSE);
return texture->priv->is_tiled;
}
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