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mutter/cogl/winsys/cogl-texture-pixmap-x11.c
Robert Bragg df21e20f65 Adds CoglError api 
Although we use GLib internally in Cogl we would rather not leak GLib
api through Cogl's own api, except through explicitly namespaced
cogl_glib_ / cogl_gtype_ feature apis.

One of the benefits we see to not leaking GLib through Cogl's public API
is that documentation for Cogl won't need to first introduce the Glib
API to newcomers, thus hopefully lowering the barrier to learning Cogl.

This patch provides a Cogl specific typedef for reporting runtime errors
which by no coincidence matches the typedef for GError exactly.  If Cogl
is built with --enable-glib (default) then developers can even safely
assume that a CoglError is a GError under the hood.

This patch also enforces a consistent policy for when NULL is passed as
an error argument and an error is thrown. In this case we log the error
and abort the application, instead of silently ignoring it. In common
cases where nothing has been implemented to handle a particular error
and/or where applications are just printing the error and aborting
themselves then this saves some typing. This also seems more consistent
with language based exceptions which usually cause a program to abort if
they are not explicitly caught (which passing a non-NULL error signifies
in this case)

Since this policy for NULL error pointers is stricter than the standard
GError convention, there is a clear note in the documentation to warn
developers that are used to using the GError api.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit b068d5ea09ab32c37e8c965fc8582c85d1b2db46)

Note: Since we can't change the Cogl 1.x api the patch was changed to
not rename _error_quark() functions to be _error_domain() functions and
although it's a bit ugly, instead of providing our own CoglError type
that's compatible with GError we simply #define CoglError to GError
unless Cogl is built with glib disabled.

Note: this patch does technically introduce an API break since it drops
the cogl_error_get_type() symbol generated by glib-mkenum (Since the
CoglError enum was replaced by a CoglSystemError enum) but for now we
are assuming that this will not affect anyone currently using the Cogl
API. If this does turn out to be a problem in practice then we would be
able to fix this my manually copying an implementation of
cogl_error_get_type() generated by glib-mkenum into a compatibility
source file and we could also define the original COGL_ERROR_ enums for
compatibility too.

Note: another minor concern with cherry-picking this patch to the 1.14
branch is that an api scanner would be lead to believe that some APIs
have changed, and for example the gobject-introspection parser which
understands the semantics of GError will not understand the semantics of
CoglError. We expect most people that have tried to use
gobject-introspection with Cogl already understand though that it is not
well suited to generating bindings of the Cogl api anyway and we aren't
aware or anyone depending on such bindings for apis involving GErrors.
(GnomeShell only makes very-very minimal use of Cogl via the gjs
bindings for the cogl_rectangle and cogl_color apis.)

The main reason we have cherry-picked this patch to the 1.14 branch
even given the above concerns is that without it it would become very
awkward for us to cherry-pick other beneficial patches from master.
2013-01-22 17:47:39 +00:00

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* 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, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
* Johan Bilien <johan.bilien@nokia.com>
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-debug.h"
#include "cogl-internal.h"
#include "cogl-util.h"
#include "cogl-texture-pixmap-x11.h"
#include "cogl-texture-pixmap-x11-private.h"
#include "cogl-bitmap-private.h"
#include "cogl-texture-private.h"
#include "cogl-texture-driver.h"
#include "cogl-texture-2d-private.h"
#include "cogl-texture-rectangle-private.h"
#include "cogl-context-private.h"
#include "cogl-display-private.h"
#include "cogl-renderer-private.h"
#include "cogl-object-private.h"
#include "cogl-winsys-private.h"
#include "cogl-pipeline-opengl-private.h"
#include "cogl-xlib.h"
#include "cogl-error-private.h"
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <X11/extensions/XShm.h>
#include <string.h>
#include <math.h>
static void _cogl_texture_pixmap_x11_free (CoglTexturePixmapX11 *tex_pixmap);
COGL_TEXTURE_DEFINE (TexturePixmapX11, texture_pixmap_x11);
static const CoglTextureVtable cogl_texture_pixmap_x11_vtable;
uint32_t
cogl_texture_pixmap_x11_error_quark (void)
{
return g_quark_from_static_string ("cogl-texture-pixmap-error-quark");
}
static void
cogl_damage_rectangle_union (CoglDamageRectangle *damage_rect,
int x,
int y,
int width,
int height)
{
/* If the damage region is empty then we'll just copy the new
rectangle directly */
if (damage_rect->x1 == damage_rect->x2 ||
damage_rect->y1 == damage_rect->y2)
{
damage_rect->x1 = x;
damage_rect->y1 = y;
damage_rect->x2 = x + width;
damage_rect->y2 = y + height;
}
else
{
if (damage_rect->x1 > x)
damage_rect->x1 = x;
if (damage_rect->y1 > y)
damage_rect->y1 = y;
if (damage_rect->x2 < x + width)
damage_rect->x2 = x + width;
if (damage_rect->y2 < y + height)
damage_rect->y2 = y + height;
}
}
static CoglBool
cogl_damage_rectangle_is_whole (const CoglDamageRectangle *damage_rect,
unsigned int width,
unsigned int height)
{
return (damage_rect->x1 == 0 && damage_rect->y1 == 0
&& damage_rect->x2 == width && damage_rect->y2 == height);
}
static const CoglWinsysVtable *
_cogl_texture_pixmap_x11_get_winsys (CoglTexturePixmapX11 *tex_pixmap)
{
/* FIXME: A CoglContext should be reachable from a CoglTexture
* pointer */
_COGL_GET_CONTEXT (ctx, NULL);
return ctx->display->renderer->winsys_vtable;
}
static void
process_damage_event (CoglTexturePixmapX11 *tex_pixmap,
XDamageNotifyEvent *damage_event)
{
Display *display;
enum { DO_NOTHING, NEEDS_SUBTRACT, NEED_BOUNDING_BOX } handle_mode;
const CoglWinsysVtable *winsys;
_COGL_GET_CONTEXT (ctxt, NO_RETVAL);
display = cogl_xlib_get_display ();
COGL_NOTE (TEXTURE_PIXMAP, "Damage event received for %p", tex_pixmap);
switch (tex_pixmap->damage_report_level)
{
case COGL_TEXTURE_PIXMAP_X11_DAMAGE_RAW_RECTANGLES:
/* For raw rectangles we don't need do look at the damage region
at all because the damage area is directly given in the event
struct and the reporting of events is not affected by
clearing the damage region */
handle_mode = DO_NOTHING;
break;
case COGL_TEXTURE_PIXMAP_X11_DAMAGE_DELTA_RECTANGLES:
case COGL_TEXTURE_PIXMAP_X11_DAMAGE_NON_EMPTY:
/* For delta rectangles and non empty we'll query the damage
region for the bounding box */
handle_mode = NEED_BOUNDING_BOX;
break;
case COGL_TEXTURE_PIXMAP_X11_DAMAGE_BOUNDING_BOX:
/* For bounding box we need to clear the damage region but we
don't actually care what it was because the damage event
itself contains the bounding box of the region */
handle_mode = NEEDS_SUBTRACT;
break;
default:
g_assert_not_reached ();
}
/* If the damage already covers the whole rectangle then we don't
need to request the bounding box of the region because we're
going to update the whole texture anyway. */
if (cogl_damage_rectangle_is_whole (&tex_pixmap->damage_rect,
tex_pixmap->width,
tex_pixmap->height))
{
if (handle_mode != DO_NOTHING)
XDamageSubtract (display, tex_pixmap->damage, None, None);
}
else if (handle_mode == NEED_BOUNDING_BOX)
{
XserverRegion parts;
int r_count;
XRectangle r_bounds;
XRectangle *r_damage;
/* We need to extract the damage region so we can get the
bounding box */
parts = XFixesCreateRegion (display, 0, 0);
XDamageSubtract (display, tex_pixmap->damage, None, parts);
r_damage = XFixesFetchRegionAndBounds (display,
parts,
&r_count,
&r_bounds);
cogl_damage_rectangle_union (&tex_pixmap->damage_rect,
r_bounds.x,
r_bounds.y,
r_bounds.width,
r_bounds.height);
if (r_damage)
XFree (r_damage);
XFixesDestroyRegion (display, parts);
}
else
{
if (handle_mode == NEEDS_SUBTRACT)
/* We still need to subtract from the damage region but we
don't care what the region actually was */
XDamageSubtract (display, tex_pixmap->damage, None, None);
cogl_damage_rectangle_union (&tex_pixmap->damage_rect,
damage_event->area.x,
damage_event->area.y,
damage_event->area.width,
damage_event->area.height);
}
if (tex_pixmap->winsys)
{
/* If we're using the texture from pixmap extension then there's no
point in getting the region and we can just mark that the texture
needs updating */
winsys = _cogl_texture_pixmap_x11_get_winsys (tex_pixmap);
winsys->texture_pixmap_x11_damage_notify (tex_pixmap);
}
}
static CoglFilterReturn
_cogl_texture_pixmap_x11_filter (XEvent *event, void *data)
{
CoglTexturePixmapX11 *tex_pixmap = data;
int damage_base;
_COGL_GET_CONTEXT (ctxt, COGL_FILTER_CONTINUE);
damage_base = _cogl_xlib_get_damage_base ();
if (event->type == damage_base + XDamageNotify)
{
XDamageNotifyEvent *damage_event = (XDamageNotifyEvent *) event;
if (damage_event->damage == tex_pixmap->damage)
process_damage_event (tex_pixmap, damage_event);
}
return COGL_FILTER_CONTINUE;
}
static void
set_damage_object_internal (CoglContext *ctx,
CoglTexturePixmapX11 *tex_pixmap,
Damage damage,
CoglTexturePixmapX11ReportLevel report_level)
{
if (tex_pixmap->damage)
{
cogl_xlib_renderer_remove_filter (ctx->display->renderer,
_cogl_texture_pixmap_x11_filter,
tex_pixmap);
if (tex_pixmap->damage_owned)
{
XDamageDestroy (cogl_xlib_get_display (), tex_pixmap->damage);
tex_pixmap->damage_owned = FALSE;
}
}
tex_pixmap->damage = damage;
tex_pixmap->damage_report_level = report_level;
if (damage)
cogl_xlib_renderer_add_filter (ctx->display->renderer,
_cogl_texture_pixmap_x11_filter,
tex_pixmap);
}
CoglTexturePixmapX11 *
cogl_texture_pixmap_x11_new (CoglContext *ctxt,
uint32_t pixmap,
CoglBool automatic_updates,
CoglError **error)
{
CoglTexturePixmapX11 *tex_pixmap = g_new (CoglTexturePixmapX11, 1);
Display *display = cogl_xlib_get_display ();
Window pixmap_root_window;
int pixmap_x, pixmap_y;
unsigned int pixmap_border_width;
CoglTexture *tex = COGL_TEXTURE (tex_pixmap);
XWindowAttributes window_attributes;
int damage_base;
const CoglWinsysVtable *winsys;
_cogl_texture_init (tex, ctxt, &cogl_texture_pixmap_x11_vtable);
tex_pixmap->pixmap = pixmap;
tex_pixmap->image = NULL;
tex_pixmap->shm_info.shmid = -1;
tex_pixmap->tex = NULL;
tex_pixmap->damage_owned = FALSE;
tex_pixmap->damage = 0;
if (!XGetGeometry (display, pixmap, &pixmap_root_window,
&pixmap_x, &pixmap_y,
&tex_pixmap->width, &tex_pixmap->height,
&pixmap_border_width, &tex_pixmap->depth))
{
g_free (tex_pixmap);
_cogl_set_error (error,
COGL_TEXTURE_PIXMAP_X11_ERROR,
COGL_TEXTURE_PIXMAP_X11_ERROR_X11,
"Unable to query pixmap size");
return NULL;
}
/* We need a visual to use for shared memory images so we'll query
it from the pixmap's root window */
if (!XGetWindowAttributes (display, pixmap_root_window, &window_attributes))
{
g_free (tex_pixmap);
_cogl_set_error (error,
COGL_TEXTURE_PIXMAP_X11_ERROR,
COGL_TEXTURE_PIXMAP_X11_ERROR_X11,
"Unable to query root window attributes");
return NULL;
}
tex_pixmap->visual = window_attributes.visual;
/* If automatic updates are requested and the Xlib connection
supports damage events then we'll register a damage object on the
pixmap */
damage_base = _cogl_xlib_get_damage_base ();
if (automatic_updates && damage_base >= 0)
{
Damage damage = XDamageCreate (display,
pixmap,
XDamageReportBoundingBox);
set_damage_object_internal (ctxt,
tex_pixmap,
damage,
COGL_TEXTURE_PIXMAP_X11_DAMAGE_BOUNDING_BOX);
tex_pixmap->damage_owned = TRUE;
}
/* Assume the entire pixmap is damaged to begin with */
tex_pixmap->damage_rect.x1 = 0;
tex_pixmap->damage_rect.x2 = tex_pixmap->width;
tex_pixmap->damage_rect.y1 = 0;
tex_pixmap->damage_rect.y2 = tex_pixmap->height;
winsys = _cogl_texture_pixmap_x11_get_winsys (tex_pixmap);
if (winsys->texture_pixmap_x11_create)
{
tex_pixmap->use_winsys_texture =
winsys->texture_pixmap_x11_create (tex_pixmap);
}
else
tex_pixmap->use_winsys_texture = FALSE;
if (!tex_pixmap->use_winsys_texture)
tex_pixmap->winsys = NULL;
return _cogl_texture_pixmap_x11_object_new (tex_pixmap);
}
/* Tries to allocate enough shared mem to handle a full size
* update size of the X Pixmap. */
static void
try_alloc_shm (CoglTexturePixmapX11 *tex_pixmap)
{
XImage *dummy_image;
Display *display;
display = cogl_xlib_get_display ();
if (!XShmQueryExtension (display))
return;
/* We are creating a dummy_image so we can have Xlib calculate
* image->bytes_per_line - including any magic padding it may
* want - for the largest possible ximage we might need to use
* when handling updates to the texture.
*
* Note: we pass a NULL shminfo here, but that has no bearing
* on the setup of the XImage, except that ximage->obdata will
* == NULL.
*/
dummy_image =
XShmCreateImage (display,
tex_pixmap->visual,
tex_pixmap->depth,
ZPixmap,
NULL,
NULL, /* shminfo, */
tex_pixmap->width,
tex_pixmap->height);
if (!dummy_image)
goto failed_image_create;
tex_pixmap->shm_info.shmid = shmget (IPC_PRIVATE,
dummy_image->bytes_per_line
* dummy_image->height,
IPC_CREAT | 0777);
if (tex_pixmap->shm_info.shmid == -1)
goto failed_shmget;
tex_pixmap->shm_info.shmaddr = shmat (tex_pixmap->shm_info.shmid, 0, 0);
if (tex_pixmap->shm_info.shmaddr == (void *) -1)
goto failed_shmat;
tex_pixmap->shm_info.readOnly = False;
if (XShmAttach (display, &tex_pixmap->shm_info) == 0)
goto failed_xshmattach;
XDestroyImage (dummy_image);
return;
failed_xshmattach:
g_warning ("XShmAttach failed");
shmdt (tex_pixmap->shm_info.shmaddr);
failed_shmat:
g_warning ("shmat failed");
shmctl (tex_pixmap->shm_info.shmid, IPC_RMID, 0);
failed_shmget:
g_warning ("shmget failed");
XDestroyImage (dummy_image);
failed_image_create:
tex_pixmap->shm_info.shmid = -1;
}
void
cogl_texture_pixmap_x11_update_area (CoglTexturePixmapX11 *tex_pixmap,
int x,
int y,
int width,
int height)
{
/* We'll queue the update for both the GLX texture and the regular
texture because we can't determine which will be needed until we
actually render something */
if (tex_pixmap->winsys)
{
const CoglWinsysVtable *winsys;
winsys = _cogl_texture_pixmap_x11_get_winsys (tex_pixmap);
winsys->texture_pixmap_x11_damage_notify (tex_pixmap);
}
cogl_damage_rectangle_union (&tex_pixmap->damage_rect,
x, y, width, height);
}
CoglBool
cogl_texture_pixmap_x11_is_using_tfp_extension (CoglTexturePixmapX11 *tex_pixmap)
{
return !!tex_pixmap->winsys;
}
void
cogl_texture_pixmap_x11_set_damage_object (CoglTexturePixmapX11 *tex_pixmap,
uint32_t damage,
CoglTexturePixmapX11ReportLevel
report_level)
{
int damage_base;
_COGL_GET_CONTEXT (ctxt, NO_RETVAL);
damage_base = _cogl_xlib_get_damage_base ();
if (damage_base >= 0)
set_damage_object_internal (ctxt, tex_pixmap, damage, report_level);
}
static void
_cogl_texture_pixmap_x11_update_image_texture (CoglTexturePixmapX11 *tex_pixmap)
{
Display *display;
Visual *visual;
CoglPixelFormat image_format;
XImage *image;
int src_x, src_y;
int x, y, width, height;
display = cogl_xlib_get_display ();
visual = tex_pixmap->visual;
/* If the damage region is empty then there's nothing to do */
if (tex_pixmap->damage_rect.x2 == tex_pixmap->damage_rect.x1)
return;
x = tex_pixmap->damage_rect.x1;
y = tex_pixmap->damage_rect.y1;
width = tex_pixmap->damage_rect.x2 - x;
height = tex_pixmap->damage_rect.y2 - y;
/* We lazily create the texture the first time it is needed in case
this texture can be entirely handled using the GLX texture
instead */
if (tex_pixmap->tex == NULL)
{
CoglPixelFormat texture_format;
texture_format = (tex_pixmap->depth >= 32
? COGL_PIXEL_FORMAT_RGBA_8888_PRE
: COGL_PIXEL_FORMAT_RGB_888);
tex_pixmap->tex = cogl_texture_new_with_size (tex_pixmap->width,
tex_pixmap->height,
COGL_TEXTURE_NONE,
texture_format);
}
if (tex_pixmap->image == NULL)
{
/* If we also haven't got a shm segment then this must be the
first time we've tried to update, so lets try allocating shm
first */
if (tex_pixmap->shm_info.shmid == -1)
try_alloc_shm (tex_pixmap);
if (tex_pixmap->shm_info.shmid == -1)
{
COGL_NOTE (TEXTURE_PIXMAP, "Updating %p using XGetImage", tex_pixmap);
/* We'll fallback to using a regular XImage. We'll download
the entire area instead of a sub region because presumably
if this is the first update then the entire pixmap is
needed anyway and it saves trying to manually allocate an
XImage at the right size */
tex_pixmap->image = XGetImage (display,
tex_pixmap->pixmap,
0, 0,
tex_pixmap->width, tex_pixmap->height,
AllPlanes, ZPixmap);
image = tex_pixmap->image;
src_x = x;
src_y = y;
}
else
{
COGL_NOTE (TEXTURE_PIXMAP, "Updating %p using XShmGetImage",
tex_pixmap);
/* Create a temporary image using the beginning of the
shared memory segment and the right size for the region
we want to update. We need to reallocate the XImage every
time because there is no XShmGetSubImage. */
image = XShmCreateImage (display,
tex_pixmap->visual,
tex_pixmap->depth,
ZPixmap,
NULL,
&tex_pixmap->shm_info,
width,
height);
image->data = tex_pixmap->shm_info.shmaddr;
src_x = 0;
src_y = 0;
XShmGetImage (display, tex_pixmap->pixmap, image, x, y, AllPlanes);
}
}
else
{
COGL_NOTE (TEXTURE_PIXMAP, "Updating %p using XGetSubImage", tex_pixmap);
image = tex_pixmap->image;
src_x = x;
src_y = y;
XGetSubImage (display,
tex_pixmap->pixmap,
x, y, width, height,
AllPlanes, ZPixmap,
image,
x, y);
}
image_format =
_cogl_util_pixel_format_from_masks (visual->red_mask,
visual->green_mask,
visual->blue_mask,
image->depth,
image->bits_per_pixel,
image->byte_order == LSBFirst);
cogl_texture_set_region (tex_pixmap->tex,
src_x, src_y,
x, y, width, height,
image->width,
image->height,
image_format,
image->bytes_per_line,
(const uint8_t *) image->data);
/* If we have a shared memory segment then the XImage would be a
temporary one with no data allocated so we can just XFree it */
if (tex_pixmap->shm_info.shmid != -1)
XFree (image);
memset (&tex_pixmap->damage_rect, 0, sizeof (CoglDamageRectangle));
}
static void
_cogl_texture_pixmap_x11_set_use_winsys_texture (CoglTexturePixmapX11 *tex_pixmap,
CoglBool new_value)
{
if (tex_pixmap->use_winsys_texture != new_value)
{
/* Notify cogl-pipeline.c that the texture's underlying GL texture
* storage is changing so it knows it may need to bind a new texture
* if the CoglTexture is reused with the same texture unit. */
_cogl_pipeline_texture_storage_change_notify (COGL_TEXTURE (tex_pixmap));
tex_pixmap->use_winsys_texture = new_value;
}
}
static void
_cogl_texture_pixmap_x11_update (CoglTexturePixmapX11 *tex_pixmap,
CoglBool needs_mipmap)
{
if (tex_pixmap->winsys)
{
const CoglWinsysVtable *winsys =
_cogl_texture_pixmap_x11_get_winsys (tex_pixmap);
if (winsys->texture_pixmap_x11_update (tex_pixmap, needs_mipmap))
{
_cogl_texture_pixmap_x11_set_use_winsys_texture (tex_pixmap, TRUE);
return;
}
}
/* If it didn't work then fallback to using XGetImage. This may be
temporary */
_cogl_texture_pixmap_x11_set_use_winsys_texture (tex_pixmap, FALSE);
_cogl_texture_pixmap_x11_update_image_texture (tex_pixmap);
}
static CoglTexture *
_cogl_texture_pixmap_x11_get_texture (CoglTexturePixmapX11 *tex_pixmap)
{
CoglTexture *tex;
int i;
/* We try getting the texture twice, once without flushing the
updates and once with. If pre_paint has been called already then
we should have a good idea of which texture to use so we don't
want to mess with that by ensuring the updates. However, if we
couldn't find a texture then we'll just make a best guess by
flushing without expecting mipmap support and try again. This
would happen for example if an application calls
get_gl_texture before the first paint */
for (i = 0; i < 2; i++)
{
if (tex_pixmap->use_winsys_texture)
{
const CoglWinsysVtable *winsys =
_cogl_texture_pixmap_x11_get_winsys (tex_pixmap);
tex = winsys->texture_pixmap_x11_get_texture (tex_pixmap);
}
else
tex = tex_pixmap->tex;
if (tex)
return tex;
_cogl_texture_pixmap_x11_update (tex_pixmap, FALSE);
}
g_assert_not_reached ();
return NULL;
}
static CoglBool
_cogl_texture_pixmap_x11_set_region (CoglTexture *tex,
int src_x,
int src_y,
int dst_x,
int dst_y,
unsigned int dst_width,
unsigned int dst_height,
CoglBitmap *bmp)
{
/* This doesn't make much sense for texture from pixmap so it's not
supported */
return FALSE;
}
static CoglBool
_cogl_texture_pixmap_x11_get_data (CoglTexture *tex,
CoglPixelFormat format,
unsigned int rowstride,
uint8_t *data)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
/* Forward on to the child texture */
return cogl_texture_get_data (child_tex, format, rowstride, data);
}
typedef struct _NormalizeCoordsWrapperData
{
int width;
int height;
CoglMetaTextureCallback callback;
void *user_data;
} NormalizeCoordsWrapperData;
static void
normalize_coords_wrapper_cb (CoglTexture *child_texture,
const float *child_texture_coords,
const float *meta_coords,
void *user_data)
{
NormalizeCoordsWrapperData *data = user_data;
float normalized_coords[4];
normalized_coords[0] = meta_coords[0] / data->width;
normalized_coords[1] = meta_coords[1] / data->height;
normalized_coords[2] = meta_coords[2] / data->width;
normalized_coords[3] = meta_coords[3] / data->height;
data->callback (child_texture,
child_texture_coords, normalized_coords,
data->user_data);
}
static void
_cogl_texture_pixmap_x11_foreach_sub_texture_in_region
(CoglTexture *tex,
float virtual_tx_1,
float virtual_ty_1,
float virtual_tx_2,
float virtual_ty_2,
CoglMetaTextureCallback callback,
void *user_data)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
/* Forward on to the child texture */
/* tfp textures may be implemented in terms of a
* CoglTextureRectangle texture which uses un-normalized texture
* coordinates but we want to consistently deal with normalized
* texture coordinates with CoglTexturePixmapX11... */
if (cogl_is_texture_rectangle (child_tex))
{
NormalizeCoordsWrapperData data;
int width = tex_pixmap->width;
int height = tex_pixmap->height;
virtual_tx_1 *= width;
virtual_ty_1 *= height;
virtual_tx_2 *= width;
virtual_ty_2 *= height;
data.width = width;
data.height = height;
data.callback = callback;
data.user_data = user_data;
cogl_meta_texture_foreach_in_region (COGL_META_TEXTURE (child_tex),
virtual_tx_1,
virtual_ty_1,
virtual_tx_2,
virtual_ty_2,
COGL_PIPELINE_WRAP_MODE_REPEAT,
COGL_PIPELINE_WRAP_MODE_REPEAT,
normalize_coords_wrapper_cb,
&data);
}
else
cogl_meta_texture_foreach_in_region (COGL_META_TEXTURE (child_tex),
virtual_tx_1,
virtual_ty_1,
virtual_tx_2,
virtual_ty_2,
COGL_PIPELINE_WRAP_MODE_REPEAT,
COGL_PIPELINE_WRAP_MODE_REPEAT,
callback,
user_data);
}
static int
_cogl_texture_pixmap_x11_get_max_waste (CoglTexture *tex)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
return cogl_texture_get_max_waste (child_tex);
}
static CoglBool
_cogl_texture_pixmap_x11_is_sliced (CoglTexture *tex)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
return cogl_texture_is_sliced (child_tex);
}
static CoglBool
_cogl_texture_pixmap_x11_can_hardware_repeat (CoglTexture *tex)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
return _cogl_texture_can_hardware_repeat (child_tex);
}
static void
_cogl_texture_pixmap_x11_transform_coords_to_gl (CoglTexture *tex,
float *s,
float *t)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
/* Forward on to the child texture */
_cogl_texture_transform_coords_to_gl (child_tex, s, t);
}
static CoglTransformResult
_cogl_texture_pixmap_x11_transform_quad_coords_to_gl (CoglTexture *tex,
float *coords)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
/* Forward on to the child texture */
return _cogl_texture_transform_quad_coords_to_gl (child_tex, coords);
}
static CoglBool
_cogl_texture_pixmap_x11_get_gl_texture (CoglTexture *tex,
GLuint *out_gl_handle,
GLenum *out_gl_target)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
/* Forward on to the child texture */
return cogl_texture_get_gl_texture (child_tex,
out_gl_handle,
out_gl_target);
}
static void
_cogl_texture_pixmap_x11_set_filters (CoglTexture *tex,
GLenum min_filter,
GLenum mag_filter)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
/* Forward on to the child texture */
_cogl_texture_set_filters (child_tex, min_filter, mag_filter);
}
static void
_cogl_texture_pixmap_x11_pre_paint (CoglTexture *tex,
CoglTexturePrePaintFlags flags)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex;
_cogl_texture_pixmap_x11_update (tex_pixmap,
!!(flags & COGL_TEXTURE_NEEDS_MIPMAP));
child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
_cogl_texture_pre_paint (child_tex, flags);
}
static void
_cogl_texture_pixmap_x11_ensure_non_quad_rendering (CoglTexture *tex)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
/* Forward on to the child texture */
_cogl_texture_ensure_non_quad_rendering (child_tex);
}
static void
_cogl_texture_pixmap_x11_set_wrap_mode_parameters (CoglTexture *tex,
GLenum wrap_mode_s,
GLenum wrap_mode_t,
GLenum wrap_mode_p)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
/* Forward on to the child texture */
_cogl_texture_set_wrap_mode_parameters (child_tex,
wrap_mode_s,
wrap_mode_t,
wrap_mode_p);
}
static CoglPixelFormat
_cogl_texture_pixmap_x11_get_format (CoglTexture *tex)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
/* Forward on to the child texture */
return cogl_texture_get_format (child_tex);
}
static GLenum
_cogl_texture_pixmap_x11_get_gl_format (CoglTexture *tex)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
return _cogl_texture_get_gl_format (child_tex);
}
static int
_cogl_texture_pixmap_x11_get_width (CoglTexture *tex)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
return tex_pixmap->width;
}
static int
_cogl_texture_pixmap_x11_get_height (CoglTexture *tex)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
return tex_pixmap->height;
}
static CoglTextureType
_cogl_texture_pixmap_x11_get_type (CoglTexture *tex)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex;
child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
/* Forward on to the child texture */
return _cogl_texture_get_type (child_tex);
}
static void
_cogl_texture_pixmap_x11_free (CoglTexturePixmapX11 *tex_pixmap)
{
_COGL_GET_CONTEXT (ctxt, NO_RETVAL);
set_damage_object_internal (ctxt, tex_pixmap, 0, 0);
if (tex_pixmap->image)
XDestroyImage (tex_pixmap->image);
if (tex_pixmap->shm_info.shmid != -1)
{
XShmDetach (cogl_xlib_get_display (), &tex_pixmap->shm_info);
shmdt (tex_pixmap->shm_info.shmaddr);
shmctl (tex_pixmap->shm_info.shmid, IPC_RMID, 0);
}
if (tex_pixmap->tex)
cogl_object_unref (tex_pixmap->tex);
if (tex_pixmap->winsys)
{
const CoglWinsysVtable *winsys =
_cogl_texture_pixmap_x11_get_winsys (tex_pixmap);
winsys->texture_pixmap_x11_free (tex_pixmap);
}
/* Chain up */
_cogl_texture_free (COGL_TEXTURE (tex_pixmap));
}
static const CoglTextureVtable
cogl_texture_pixmap_x11_vtable =
{
FALSE, /* not primitive */
_cogl_texture_pixmap_x11_set_region,
_cogl_texture_pixmap_x11_get_data,
_cogl_texture_pixmap_x11_foreach_sub_texture_in_region,
_cogl_texture_pixmap_x11_get_max_waste,
_cogl_texture_pixmap_x11_is_sliced,
_cogl_texture_pixmap_x11_can_hardware_repeat,
_cogl_texture_pixmap_x11_transform_coords_to_gl,
_cogl_texture_pixmap_x11_transform_quad_coords_to_gl,
_cogl_texture_pixmap_x11_get_gl_texture,
_cogl_texture_pixmap_x11_set_filters,
_cogl_texture_pixmap_x11_pre_paint,
_cogl_texture_pixmap_x11_ensure_non_quad_rendering,
_cogl_texture_pixmap_x11_set_wrap_mode_parameters,
_cogl_texture_pixmap_x11_get_format,
_cogl_texture_pixmap_x11_get_gl_format,
_cogl_texture_pixmap_x11_get_width,
_cogl_texture_pixmap_x11_get_height,
_cogl_texture_pixmap_x11_get_type,
NULL, /* is_foreign */
NULL /* set_auto_mipmap */
};
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