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clutter-{glx,x11}-texture-pixmap: Use CoglTexturePixmapX11

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The pixmap handling of both of the texture pixmap actors in Clutter is
now removed and instead it just creates a CoglTexturePixmapX11. Both
actors are now equivalent so there is no need to choose between the
two.
This commit is contained in:
Neil Roberts 2010-05-26 18:06:39 +01:00
parent a197baa533
commit 5d860a9978
2 changed files with 94 additions and 1217 deletions
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818
clutter/glx/clutter-glx-texture-pixmap.c
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@ -6,8 +6,10 @@
* Authored By Johan Bilien <johan.bilien@nokia.com>
* Matthew Allum <mallum@o-hand.com>
* Robert Bragg <bob@o-hand.com>
* Neil Roberts <neil@linux.intel.com>
*
* Copyright (C) 2007 OpenedHand
* 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
@ -25,11 +27,6 @@
*
*/
/* TODO:
* - Automagically handle named pixmaps, and window resizes (i.e
* essentially handle window id's being passed in) ?
*/
/**
* SECTION:clutter-glx-texture-pixmap
* @short_description: A texture which displays the content of an X Pixmap.
@ -38,15 +35,12 @@
* X Pixmap as a ClutterActor. Used together with the X Composite extension,
* it allows to display the content of X Windows inside Clutter.
*
* The class requires the GLX_EXT_texture_from_pixmap OpenGL extension
* (http://people.freedesktop.org/~davidr/GLX_EXT_texture_from_pixmap.txt)
*
* The GL_ARB_texture_non_power_of_two extension will be used if it is
* available. Otherwise it will try to use the
* GL_ARB_texture_rectangle extension. If both are available you can
* force it to prefer the rectangle extension by setting the
* CLUTTER_PIXMAP_TEXTURE_RECTANGLE to 'force'. To prevent it ever
* using the rectangle extension you can set it to 'disable'.
* This class used to be necessary to use the
* GLX_EXT_texture_from_pixmap extension to get fast texture
* updates. However since Clutter 1.4 the handling of this extension
* has moved down to Cogl. ClutterX11TexturePixmap and
* ClutterGLXTexturePixmap are now equivalent and either one of them
* may use the extension if it is possible.
*/
@ -59,802 +53,21 @@
#include "../x11/clutter-x11-texture-pixmap.h"
#include "clutter-glx-texture-pixmap.h"
#include "clutter-glx.h"
#include "clutter-backend-glx.h"
#include "../clutter-util.h"
#include "../clutter-debug.h"
#include "../clutter-private.h"
#include "cogl/cogl.h"
#include "cogl/cogl-material-private.h"
typedef void (*BindTexImage) (Display *display,
GLXDrawable drawable,
int buffer,
int *attribList);
typedef void (*ReleaseTexImage) (Display *display,
GLXDrawable drawable,
int buffer);
typedef void (*GenerateMipmap) (GLenum target);
typedef enum
{
CLUTTER_GLX_RECTANGLE_DISALLOW,
CLUTTER_GLX_RECTANGLE_ALLOW,
CLUTTER_GLX_RECTANGLE_FORCE
} RectangleState;
enum
{
PROP_0,
PROP_AUTO_REDRAW,
};
static BindTexImage _gl_bind_tex_image = NULL;
static ReleaseTexImage _gl_release_tex_image = NULL;
static GenerateMipmap _gl_generate_mipmap = NULL;
static gboolean _have_tex_from_pixmap_ext = FALSE;
static gboolean _ext_check_done = FALSE;
static gboolean _have_tex_rectangle = FALSE;
static RectangleState _rectangle_state = CLUTTER_GLX_RECTANGLE_ALLOW;
struct _ClutterGLXTexturePixmapPrivate
{
GLXPixmap glx_pixmap;
gboolean use_fallback;
gboolean bound;
gint can_mipmap;
gboolean mipmap_generate_queued;
gboolean bind_tex_image_queued;
gboolean using_rectangle;
};
static void
clutter_glx_texture_pixmap_update_area (ClutterX11TexturePixmap *texture,
gint x,
gint y,
gint width,
gint height);
static void
clutter_glx_texture_pixmap_create_glx_pixmap (ClutterGLXTexturePixmap *tex);
static ClutterX11TexturePixmapClass *parent_class = NULL;
#include "cogl/winsys/cogl-texture-pixmap-x11.h"
G_DEFINE_TYPE (ClutterGLXTexturePixmap, \
clutter_glx_texture_pixmap, \
CLUTTER_X11_TYPE_TEXTURE_PIXMAP);
static void
bind_texture (ClutterGLXTexturePixmap *tex)
{
GLuint handle = 0;
GLenum target = 0;
CoglHandle cogl_tex =
clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (tex));
if (!cogl_texture_get_gl_texture (cogl_tex, &handle, &target))
g_warning ("Failed to pluck out GL handle from cogl texture to bind");
if (tex->priv->using_rectangle)
_cogl_bind_gl_texture_transient (target, handle, TRUE);
else
_cogl_bind_gl_texture_transient (target, handle, FALSE);
}
static void
release_tex_image (ClutterGLXTexturePixmap *texture)
{
ClutterGLXTexturePixmapPrivate *priv = texture->priv;
Display *dpy;
if (!priv->glx_pixmap || !priv->bound)
return;
dpy = clutter_x11_get_default_display ();
bind_texture (texture);
clutter_x11_trap_x_errors ();
(_gl_release_tex_image) (dpy,
priv->glx_pixmap,
GLX_FRONT_LEFT_EXT);
XSync (dpy, FALSE);
if (clutter_x11_untrap_x_errors ())
CLUTTER_NOTE (TEXTURE, "Failed to release?");
CLUTTER_NOTE (TEXTURE, "Destroyed pxm: %li", priv->glx_pixmap);
priv->bound = FALSE;
}
static void
on_glx_texture_pixmap_pre_paint (ClutterGLXTexturePixmap *texture,
gpointer user_data)
{
ClutterGLXTexturePixmapPrivate *priv = texture->priv;
gboolean tex_bound = FALSE;
Display *dpy = clutter_x11_get_default_display();
if (priv->bind_tex_image_queued)
{
CLUTTER_NOTE (TEXTURE, "Really updating via GLX");
bind_texture (CLUTTER_GLX_TEXTURE_PIXMAP (texture));
tex_bound = TRUE;
clutter_x11_trap_x_errors ();
(_gl_bind_tex_image) (dpy,
priv->glx_pixmap,
GLX_FRONT_LEFT_EXT,
NULL);
XSync (dpy, FALSE);
/* Note above fires X error for non name pixmaps - but
* things still seem to work - i.e pixmap updated
*/
if (clutter_x11_untrap_x_errors ())
CLUTTER_NOTE (TEXTURE, "Update bind_tex_image failed");
priv->bound = TRUE;
if (clutter_texture_get_filter_quality (CLUTTER_TEXTURE (texture))
== CLUTTER_TEXTURE_QUALITY_HIGH)
{
priv->mipmap_generate_queued++;
}
priv->bind_tex_image_queued = FALSE;
}
if (_gl_generate_mipmap &&
priv->can_mipmap &&
priv->mipmap_generate_queued)
{
GLuint handle = 0;
GLenum target = 0;
CoglHandle cogl_tex;
cogl_tex = clutter_texture_get_cogl_texture
(CLUTTER_TEXTURE(texture));
bind_texture (texture);
tex_bound = TRUE;
cogl_texture_get_gl_texture (cogl_tex, &handle, &target);
_gl_generate_mipmap (target);
}
priv->mipmap_generate_queued = FALSE;
/* Disable mipmaps if we can't support them */
if (clutter_texture_get_filter_quality (CLUTTER_TEXTURE (texture))
== CLUTTER_TEXTURE_QUALITY_HIGH
&& !priv->can_mipmap)
{
CoglHandle material
= clutter_texture_get_cogl_material (CLUTTER_TEXTURE (texture));
cogl_material_set_layer_filters (material, 0,
COGL_MATERIAL_FILTER_LINEAR,
COGL_MATERIAL_FILTER_LINEAR);
}
}
static void
clutter_glx_texture_pixmap_init (ClutterGLXTexturePixmap *self)
{
ClutterGLXTexturePixmapPrivate *priv;
priv = self->priv =
G_TYPE_INSTANCE_GET_PRIVATE (self,
CLUTTER_GLX_TYPE_TEXTURE_PIXMAP,
ClutterGLXTexturePixmapPrivate);
g_signal_connect (CLUTTER_ACTOR(self),
"paint", G_CALLBACK (on_glx_texture_pixmap_pre_paint),
NULL);
if (_ext_check_done == FALSE)
{
const char *gl_extensions = NULL;
const gchar *glx_extensions = NULL;
const char *rect_env;
glx_extensions =
glXQueryExtensionsString (clutter_x11_get_default_display (),
clutter_x11_get_default_screen ());
/* Check for the texture from pixmap extension */
if (_cogl_check_extension ("GLX_EXT_texture_from_pixmap",
glx_extensions))
{
_gl_bind_tex_image =
(BindTexImage)cogl_get_proc_address ("glXBindTexImageEXT");
_gl_release_tex_image =
(ReleaseTexImage)cogl_get_proc_address ("glXReleaseTexImageEXT");
if (_gl_bind_tex_image && _gl_release_tex_image)
_have_tex_from_pixmap_ext = TRUE;
}
_gl_generate_mipmap =
(GenerateMipmap)cogl_get_proc_address ("glGenerateMipmapEXT");
gl_extensions = (char *) glGetString (GL_EXTENSIONS);
_have_tex_rectangle = _cogl_check_extension ("GL_ARB_texture_rectangle",
gl_extensions);
if ((rect_env = g_getenv ("CLUTTER_PIXMAP_TEXTURE_RECTANGLE")))
{
if (g_ascii_strcasecmp (rect_env, "force") == 0)
_rectangle_state = CLUTTER_GLX_RECTANGLE_FORCE;
else if (g_ascii_strcasecmp (rect_env, "disable") == 0)
_rectangle_state = CLUTTER_GLX_RECTANGLE_DISALLOW;
else if (rect_env[0])
g_warning ("Unknown value for CLUTTER_PIXMAP_TEXTURE_RECTANGLE, "
"should be 'force' or 'disable'");
}
_ext_check_done = TRUE;
}
}
static void
clutter_glx_texture_pixmap_free_rectangle (ClutterGLXTexturePixmap *texture)
{
ClutterGLXTexturePixmapPrivate *priv = texture->priv;
CoglHandle cogl_tex;
/* Cogl won't free the GL texture resource if it was created with
new_from_foreign so we need to free it manually */
if (priv->using_rectangle)
{
cogl_tex = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (texture));
if (cogl_tex != COGL_INVALID_HANDLE)
{
GLuint gl_handle;
GLenum gl_target;
cogl_texture_get_gl_texture (cogl_tex, &gl_handle, &gl_target);
if (gl_target == GL_TEXTURE_RECTANGLE_ARB)
glDeleteTextures (1, &gl_handle);
}
priv->using_rectangle = FALSE;
}
}
static void
clutter_glx_texture_pixmap_dispose (GObject *object)
{
ClutterGLXTexturePixmap *texture = CLUTTER_GLX_TEXTURE_PIXMAP (object);
ClutterGLXTexturePixmapPrivate *priv = texture->priv;
clutter_glx_texture_pixmap_free_rectangle (texture);
if (priv->glx_pixmap != None)
{
clutter_x11_trap_x_errors ();
glXDestroyPixmap (clutter_x11_get_default_display(),
priv->glx_pixmap);
XSync (clutter_x11_get_default_display(), FALSE);
clutter_x11_untrap_x_errors ();
priv->glx_pixmap = None;
}
G_OBJECT_CLASS (clutter_glx_texture_pixmap_parent_class)->dispose (object);
}
static void
clutter_glx_texture_pixmap_notify (GObject *object, GParamSpec *pspec)
{
if (g_str_equal (pspec->name, "pixmap"))
{
ClutterGLXTexturePixmap *texture = CLUTTER_GLX_TEXTURE_PIXMAP (object);
if (CLUTTER_ACTOR_IS_REALIZED (texture))
clutter_glx_texture_pixmap_create_glx_pixmap (texture);
}
}
static gboolean
should_use_rectangle (void)
{
/* Use the rectangle only if it is available and either:
the CLUTTER_PIXMAP_TEXTURE_RECTANGLE environment variable is
set to 'force'
*or*
the env var is set to 'allow' (which is the default) and NPOTs
textures are not available */
return _have_tex_rectangle
&& ((_rectangle_state == CLUTTER_GLX_RECTANGLE_ALLOW
&& !clutter_feature_available (CLUTTER_FEATURE_TEXTURE_NPOT))
|| _rectangle_state == CLUTTER_GLX_RECTANGLE_FORCE);
}
static gboolean
create_cogl_texture (ClutterTexture *texture,
guint width,
guint height)
{
ClutterGLXTexturePixmap *texture_glx = CLUTTER_GLX_TEXTURE_PIXMAP (texture);
ClutterGLXTexturePixmapPrivate *priv = texture_glx->priv;
CoglHandle handle;
gboolean using_rectangle;
GLint gl_format;
CoglPixelFormat cogl_format = COGL_PIXEL_FORMAT_RGBA_8888;
guint depth;
g_object_get (G_OBJECT (texture_glx), "pixmap-depth", &depth, NULL);
if (depth == 32)
{
gl_format = GL_RGBA;
cogl_format = COGL_PIXEL_FORMAT_RGBA_8888;
}
else if (depth == 24)
{
gl_format = GL_RGB;
cogl_format = COGL_PIXEL_FORMAT_RGB_888;
}
else
{
g_critical ("Can't create a TFP cogl texture for pixmap with depth < 24");
return FALSE;
}
/* We want to use the GL_ARB_texture_rectangle extension on some
chipsets because GL_ARB_texture_non_power_of_two is not always
supported or might be buggy */
if (should_use_rectangle ())
{
GLuint tex = 0;
using_rectangle = TRUE;
glGenTextures (1, &tex);
_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB, tex, TRUE);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0,
gl_format, width, height,
0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
handle = cogl_texture_new_from_foreign (tex, GL_TEXTURE_RECTANGLE_ARB,
width, height,
0, 0,
cogl_format | COGL_BGR_BIT |
COGL_PREMULT_BIT);
}
else
{
handle
= cogl_texture_new_with_size (width, height,
COGL_TEXTURE_NO_SLICING,
cogl_format | COGL_BGR_BIT |
COGL_PREMULT_BIT);
using_rectangle = FALSE;
}
if (handle)
{
clutter_glx_texture_pixmap_free_rectangle (texture_glx);
priv->using_rectangle = using_rectangle;
clutter_texture_set_cogl_texture (texture, handle);
cogl_handle_unref(handle);
return TRUE;
}
return FALSE;
}
static void
clutter_glx_texture_pixmap_realize (ClutterActor *actor)
{
ClutterGLXTexturePixmap *texture;
ClutterGLXTexturePixmapPrivate *priv;
texture = CLUTTER_GLX_TEXTURE_PIXMAP (actor);
priv = texture->priv;
clutter_glx_texture_pixmap_create_glx_pixmap (texture);
if (priv->use_fallback)
{
CLUTTER_ACTOR_CLASS (clutter_glx_texture_pixmap_parent_class)->
realize (actor);
return;
}
CLUTTER_NOTE (TEXTURE, "texture pixmap realised");
}
static void
clutter_glx_texture_pixmap_unrealize (ClutterActor *actor)
{
ClutterGLXTexturePixmap *texture = CLUTTER_GLX_TEXTURE_PIXMAP (actor);
Display *dpy;
dpy = clutter_x11_get_default_display();
clutter_glx_texture_pixmap_free_rectangle (texture);
if (!_have_tex_from_pixmap_ext)
{
CLUTTER_ACTOR_CLASS (clutter_glx_texture_pixmap_parent_class)->
unrealize (actor);
return;
}
if (!CLUTTER_ACTOR_IS_REALIZED (actor))
return;
release_tex_image (texture);
CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
}
static GLXFBConfig *
get_fbconfig_for_depth (ClutterGLXTexturePixmap *texture, guint depth)
{
GLXFBConfig *fbconfigs, *ret = NULL;
int n_elements, i, found;
Display *dpy;
int db, stencil, alpha, mipmap, rgba, value;
static GLXFBConfig *cached_config = NULL;
static gboolean have_cached_config = FALSE;
static int cached_mipmap = 0;
if (have_cached_config)
{
texture->priv->can_mipmap = cached_mipmap;
return cached_config;
}
dpy = clutter_x11_get_default_display ();
fbconfigs = glXGetFBConfigs (dpy,
clutter_x11_get_default_screen (),
&n_elements);
db = G_MAXSHORT;
stencil = G_MAXSHORT;
mipmap = 0;
rgba = 0;
found = n_elements;
for (i = 0; i < n_elements; i++)
{
XVisualInfo *vi;
int visual_depth;
vi = glXGetVisualFromFBConfig (dpy,
fbconfigs[i]);
if (vi == NULL)
continue;
visual_depth = vi->depth;
XFree (vi);
if (visual_depth != depth)
continue;
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_ALPHA_SIZE,
&alpha);
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_BUFFER_SIZE,
&value);
if (value != depth && (value - alpha) != depth)
continue;
value = 0;
if (depth == 32)
{
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_BIND_TO_TEXTURE_RGBA_EXT,
&value);
if (value)
rgba = 1;
}
if (!value)
{
if (rgba)
continue;
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_BIND_TO_TEXTURE_RGB_EXT,
&value);
if (!value)
continue;
}
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_DOUBLEBUFFER,
&value);
if (value > db)
continue;
db = value;
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_STENCIL_SIZE,
&value);
if (value > stencil)
continue;
stencil = value;
if (_gl_generate_mipmap)
{
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
&value);
if (value < mipmap)
continue;
mipmap = value;
}
found = i;
}
if (found != n_elements)
{
ret = g_malloc (sizeof (GLXFBConfig));
*ret = fbconfigs[found];
}
if (n_elements)
XFree (fbconfigs);
have_cached_config = TRUE;
cached_config = ret;
texture->priv->can_mipmap = cached_mipmap = mipmap;
return ret;
}
static void
clutter_glx_texture_pixmap_free_glx_pixmap (ClutterGLXTexturePixmap *texture)
{
ClutterGLXTexturePixmapPrivate *priv = texture->priv;
Display *dpy;
dpy = clutter_x11_get_default_display ();
release_tex_image (texture);
clutter_x11_trap_x_errors ();
if (priv->glx_pixmap)
glXDestroyPixmap (dpy, priv->glx_pixmap);
XSync (dpy, FALSE);
clutter_x11_untrap_x_errors ();
priv->glx_pixmap = None;
}
static void
clutter_glx_texture_pixmap_create_glx_pixmap (ClutterGLXTexturePixmap *texture)
{
ClutterGLXTexturePixmapPrivate *priv = texture->priv;
GLXPixmap glx_pixmap = None;
int attribs[7], i = 0, mipmap = 0;
GLXFBConfig *fbconfig;
Display *dpy;
guint depth;
Pixmap pixmap = None;
guint pixmap_width = 0, pixmap_height = 0;
ClutterBackendGLX *backend_glx;
ClutterTextureQuality quality;
backend_glx = CLUTTER_BACKEND_GLX(clutter_get_default_backend ());
dpy = clutter_x11_get_default_display ();
if (!_have_tex_from_pixmap_ext)
goto cleanup;
g_object_get (texture,
"pixmap-width", &pixmap_width,
"pixmap-height", &pixmap_height,
"pixmap-depth", &depth,
"pixmap", &pixmap,
NULL);
if (!pixmap)
{
goto cleanup;
}
CLUTTER_NOTE (TEXTURE, "Creating GLXPixmap");
fbconfig = get_fbconfig_for_depth (texture, depth);
if (!fbconfig)
{
g_warning ("Could not find an FBConfig for selected pixmap");
goto cleanup;
}
attribs[i++] = GLX_TEXTURE_FORMAT_EXT;
if (depth == 24)
{
attribs[i++] = GLX_TEXTURE_FORMAT_RGB_EXT;
}
else if (depth == 32)
{
attribs[i++] = GLX_TEXTURE_FORMAT_RGBA_EXT;
}
else
{
g_warning ("Pixmap with depth below 24 are not supported");
goto cleanup;
}
quality = clutter_texture_get_filter_quality (CLUTTER_TEXTURE (texture));
if (quality == CLUTTER_TEXTURE_QUALITY_HIGH && priv->can_mipmap)
mipmap = priv->can_mipmap;
attribs[i++] = GLX_MIPMAP_TEXTURE_EXT;
attribs[i++] = mipmap;
attribs[i++] = GLX_TEXTURE_TARGET_EXT;
attribs[i++] = (should_use_rectangle ()
? GLX_TEXTURE_RECTANGLE_EXT : GLX_TEXTURE_2D_EXT);
attribs[i++] = None;
/* Note: some drivers (e.g. Nvidia) get upset if you effectivly create a glx
* pixmap for the same server side object, even though you might have unique
* client side names, we currently avoid hitting this problem by destroying
* the current glx pixmap first */
if (priv->glx_pixmap)
clutter_glx_texture_pixmap_free_glx_pixmap (texture);
clutter_x11_trap_x_errors ();
glx_pixmap = glXCreatePixmap (dpy,
*fbconfig,
pixmap,
attribs);
XSync (dpy, FALSE);
if (clutter_x11_untrap_x_errors ())
{
CLUTTER_NOTE (TEXTURE, "Failed to create GLXPixmap");
/* Make sure we don't think the call actually succeeded */
glx_pixmap = None;
}
if (!create_cogl_texture (CLUTTER_TEXTURE (texture),
pixmap_width, pixmap_height))
{
CLUTTER_NOTE (TEXTURE, "Unable to create texture for pixmap");
glXDestroyPixmap (dpy, glx_pixmap);
glx_pixmap = None;
goto cleanup;
}
cleanup:
if (priv->glx_pixmap)
clutter_glx_texture_pixmap_free_glx_pixmap (texture);
if (glx_pixmap != None)
{
priv->use_fallback = FALSE;
priv->glx_pixmap = glx_pixmap;
CLUTTER_NOTE (TEXTURE, "Created GLXPixmap");
clutter_glx_texture_pixmap_update_area (CLUTTER_X11_TEXTURE_PIXMAP (texture),
0, 0,
pixmap_width, pixmap_height);
/* Get ready to queue initial mipmap generation */
if (clutter_texture_get_filter_quality (CLUTTER_TEXTURE (texture))
== CLUTTER_TEXTURE_QUALITY_HIGH)
{
priv->mipmap_generate_queued = TRUE;
}
return;
}
else
{
if (pixmap)
CLUTTER_NOTE (TEXTURE, "Falling back to X11 manual mechansim");
priv->use_fallback = TRUE;
priv->glx_pixmap = None;
}
}
static void
clutter_glx_texture_pixmap_update_area (ClutterX11TexturePixmap *texture,
gint x,
gint y,
gint width,
gint height)
{
ClutterGLXTexturePixmap *texture_glx = CLUTTER_GLX_TEXTURE_PIXMAP (texture);
ClutterGLXTexturePixmapPrivate *priv = texture_glx->priv;
CLUTTER_NOTE (TEXTURE, "Updating texture pixmap");
if (!CLUTTER_ACTOR_IS_REALIZED (texture))
return;
if (priv->use_fallback)
{
CLUTTER_NOTE (TEXTURE, "Falling back to X11");
clutter_glx_texture_pixmap_free_rectangle (texture_glx);
parent_class->update_area (texture,
x, y,
width, height);
return;
}
if (priv->glx_pixmap == None)
return;
priv->bind_tex_image_queued = TRUE;
}
static void
clutter_glx_texture_pixmap_class_init (ClutterGLXTexturePixmapClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
ClutterX11TexturePixmapClass *x11_texture_class =
CLUTTER_X11_TEXTURE_PIXMAP_CLASS (klass);
g_type_class_add_private (klass, sizeof (ClutterGLXTexturePixmapPrivate));
parent_class = g_type_class_peek_parent(klass);
object_class->dispose = clutter_glx_texture_pixmap_dispose;
object_class->notify = clutter_glx_texture_pixmap_notify;
actor_class->realize = clutter_glx_texture_pixmap_realize;
actor_class->unrealize = clutter_glx_texture_pixmap_unrealize;
x11_texture_class->update_area = clutter_glx_texture_pixmap_update_area;
}
/**
@ -875,15 +88,14 @@ clutter_glx_texture_pixmap_class_init (ClutterGLXTexturePixmapClass *klass)
gboolean
clutter_glx_texture_pixmap_using_extension (ClutterGLXTexturePixmap *texture)
{
ClutterGLXTexturePixmapPrivate *priv;
CoglHandle cogl_texture;
priv = CLUTTER_GLX_TEXTURE_PIXMAP (texture)->priv;
g_return_val_if_fail (CLUTTER_GLX_IS_TEXTURE_PIXMAP (texture), FALSE);
return (_have_tex_from_pixmap_ext && !priv->use_fallback);
/* Assume NPOT TFP's are supported even if regular NPOT isn't advertised
* but tfp is. Seemingly some Intel drivers do this ?
*/
/* && clutter_feature_available (COGL_FEATURE_TEXTURE_NPOT)); */
cogl_texture = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (texture));
return (cogl_is_texture_pixmap_x11 (cogl_texture) &&
cogl_texture_pixmap_x11_is_using_tfp_extension (cogl_texture));
}
/**

493
clutter/x11/clutter-x11-texture-pixmap.c
View File

@ -3,9 +3,8 @@
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Johan Bilien <johan.bilien@nokia.com>
*
* Copyright (C) 2007 OpenedHand
* 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
@ -20,7 +19,9 @@
* 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:
* Johan Bilien <johan.bilien@nokia.com>
* Neil Roberts <neil@linux.intel.com>
*/
/**
@ -47,15 +48,11 @@
#include "clutter-private.h"
#include "cogl/cogl.h"
#include "cogl/winsys/cogl-texture-pixmap-x11.h"
#include <X11/extensions/Xdamage.h>
#include <X11/extensions/Xcomposite.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/time.h>
#include <X11/extensions/XShm.h>
enum
{
PROP_PIXMAP = 1,
@ -103,15 +100,10 @@ struct _ClutterX11TexturePixmapPrivate
guint pixmap_width, pixmap_height;
guint depth;
XImage *image;
XShmSegmentInfo shminfo;
gboolean automatic_updates;
Damage damage;
Drawable damage_drawable;
/* FIXME: lots of gbooleans. coalesce into bitfields */
gboolean have_shm;
gboolean window_redirect_automatic;
gboolean window_mapped;
gboolean destroyed;
@ -152,150 +144,21 @@ check_extensions (ClutterX11TexturePixmap *texture)
}
static void
free_shm_resources (ClutterX11TexturePixmap *texture)
process_damage_event (ClutterX11TexturePixmap *texture,
XDamageNotifyEvent *damage_event)
{
ClutterX11TexturePixmapPrivate *priv;
priv = texture->priv;
if (priv->shminfo.shmid != -1)
{
XShmDetach(clutter_x11_get_default_display(),
&priv->shminfo);
shmdt(priv->shminfo.shmaddr);
shmctl(priv->shminfo.shmid, IPC_RMID, NULL);
priv->shminfo.shmid = -1;
}
}
/* Tries to allocate enough shared mem to handle a full size
* update size of the X Pixmap. */
static gboolean
try_alloc_shm (ClutterX11TexturePixmap *texture)
{
ClutterX11TexturePixmapPrivate *priv;
XImage *dummy_image;
Display *dpy;
priv = texture->priv;
dpy = clutter_x11_get_default_display();
g_return_val_if_fail (priv->pixmap, FALSE);
if (!XShmQueryExtension(dpy) || g_getenv("CLUTTER_X11_NO_SHM"))
{
priv->have_shm = FALSE;
return FALSE;
}
clutter_x11_trap_x_errors ();
/* 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(dpy,
DefaultVisual(dpy,
clutter_x11_get_default_screen()),
priv->depth,
ZPixmap,
NULL,
NULL, /* shminfo, */
priv->pixmap_width,
priv->pixmap_height);
if (!dummy_image)
goto failed_image_create;
priv->shminfo.shmid = shmget (IPC_PRIVATE,
dummy_image->bytes_per_line
* dummy_image->height,
IPC_CREAT | 0777);
if (priv->shminfo.shmid == -1)
goto failed_shmget;
priv->shminfo.shmaddr = shmat (priv->shminfo.shmid, NULL, 0);
if (priv->shminfo.shmaddr == (void *) -1)
goto failed_shmat;
priv->shminfo.readOnly = False;
if (XShmAttach (dpy, &priv->shminfo) == 0)
goto failed_xshmattach;
if (clutter_x11_untrap_x_errors ())
g_warning ("X Error: Failed to setup XShm");
XDestroyImage (dummy_image);
priv->have_shm = TRUE;
return TRUE;
failed_xshmattach:
g_warning ("XShmAttach failed");
shmdt (priv->shminfo.shmaddr);
failed_shmat:
g_warning ("shmat failed");
shmctl (priv->shminfo.shmid, IPC_RMID, NULL);
failed_shmget:
g_warning ("shmget failed");
XDestroyImage (dummy_image);
failed_image_create:
if (clutter_x11_untrap_x_errors ())
g_warning ("X Error: Failed to setup XShm");
priv->have_shm = FALSE;
return FALSE;
}
static void
check_for_pixmap_damage (ClutterX11TexturePixmap *texture)
{
ClutterX11TexturePixmapPrivate *priv = texture->priv;
Display *dpy;
XserverRegion parts;
int i, r_count;
XRectangle *r_damage;
XRectangle r_bounds;
clutter_x11_trap_x_errors ();
/*
* Retrieve the damaged region and break it down into individual
* rectangles so we do not have to update the whole shebang.
*/
dpy = clutter_x11_get_default_display();
parts = XFixesCreateRegion (dpy, NULL, 0);
XDamageSubtract (dpy, priv->damage, None, parts);
r_damage = XFixesFetchRegionAndBounds (dpy,
parts,
&r_count,
&r_bounds);
clutter_x11_untrap_x_errors ();
if (r_damage)
{
for (i = 0; i < r_count; ++i)
clutter_x11_texture_pixmap_update_area (texture,
r_damage[i].x,
r_damage[i].y,
r_damage[i].width,
r_damage[i].height);
XFree (r_damage);
}
XFixesDestroyRegion (dpy, parts);
/* Cogl will deal with updating the texture and subtracting from the
damage region so we only need to queue a redraw */
g_signal_emit (texture, signals[QUEUE_DAMAGE_REDRAW],
0,
damage_event->area.x,
damage_event->area.y,
damage_event->area.width,
damage_event->area.height);
}
static ClutterX11FilterReturn
@ -315,10 +178,10 @@ on_x_event_filter (XEvent *xev, ClutterEvent *cev, gpointer data)
{
XDamageNotifyEvent *dev = (XDamageNotifyEvent*)xev;
if (dev->drawable != priv->damage_drawable)
if (dev->damage != priv->damage)
return CLUTTER_X11_FILTER_CONTINUE;
check_for_pixmap_damage (texture);
process_damage_event (texture, dev);
}
return CLUTTER_X11_FILTER_CONTINUE;
@ -358,6 +221,32 @@ on_x_event_filter_too (XEvent *xev, ClutterEvent *cev, gpointer data)
return CLUTTER_X11_FILTER_CONTINUE;
}
static void
update_pixmap_damage_object (ClutterX11TexturePixmap *texture)
{
ClutterX11TexturePixmapPrivate *priv = texture->priv;
CoglHandle cogl_texture;
/* If we already have a CoglTexturePixmapX11 then update its
damage object */
cogl_texture =
clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (texture));
if (cogl_texture && cogl_is_texture_pixmap_x11 (cogl_texture))
{
if (priv->damage)
{
const CoglTexturePixmapX11ReportLevel report_level =
COGL_TEXTURE_PIXMAP_X11_DAMAGE_BOUNDING_BOX;
cogl_texture_pixmap_x11_set_damage_object (cogl_texture,
priv->damage,
report_level);
}
else
cogl_texture_pixmap_x11_set_damage_object (cogl_texture, 0, 0);
}
}
static void
create_damage_resources (ClutterX11TexturePixmap *texture)
{
@ -367,19 +256,14 @@ create_damage_resources (ClutterX11TexturePixmap *texture)
priv = texture->priv;
dpy = clutter_x11_get_default_display();
if (!priv->window && !priv->pixmap)
if (!priv->pixmap)
return;
clutter_x11_trap_x_errors ();
if (priv->window)
priv->damage_drawable = priv->window;
else
priv->damage_drawable = priv->pixmap;
priv->damage = XDamageCreate (dpy,
priv->damage_drawable,
XDamageReportNonEmpty);
priv->pixmap,
XDamageReportBoundingBox);
/* Errors here might occur if the window is already destroyed, we
* simply skip processing damage and assume that the texture pixmap
@ -389,7 +273,11 @@ create_damage_resources (ClutterX11TexturePixmap *texture)
clutter_x11_untrap_x_errors ();
if (priv->damage)
clutter_x11_add_filter (on_x_event_filter, (gpointer)texture);
{
clutter_x11_add_filter (on_x_event_filter, (gpointer)texture);
update_pixmap_damage_object (texture);
}
}
static void
@ -408,9 +296,10 @@ free_damage_resources (ClutterX11TexturePixmap *texture)
XSync (dpy, FALSE);
clutter_x11_untrap_x_errors ();
priv->damage = None;
priv->damage_drawable = None;
clutter_x11_remove_filter (on_x_event_filter, (gpointer)texture);
update_pixmap_damage_object (texture);
}
}
@ -482,15 +371,12 @@ clutter_x11_texture_pixmap_init (ClutterX11TexturePixmap *self)
*/
}
self->priv->image = NULL;
self->priv->automatic_updates = FALSE;
self->priv->damage = None;
self->priv->damage_drawable = None;
self->priv->window = None;
self->priv->pixmap = None;
self->priv->pixmap_height = 0;
self->priv->pixmap_width = 0;
self->priv->shminfo.shmid = -1;
self->priv->window_redirect_automatic = TRUE;
self->priv->window_mapped = FALSE;
self->priv->destroyed = FALSE;
@ -515,14 +401,6 @@ clutter_x11_texture_pixmap_dispose (GObject *object)
priv->pixmap = None;
}
if (priv->image)
{
XDestroyImage (priv->image);
priv->image = NULL;
}
free_shm_resources (texture);
G_OBJECT_CLASS (clutter_x11_texture_pixmap_parent_class)->dispose (object);
}
@ -621,26 +499,10 @@ clutter_x11_texture_pixmap_get_property (GObject *object,
}
}
static void
clutter_x11_texture_pixmap_realize (ClutterActor *actor)
{
ClutterX11TexturePixmap *texture = CLUTTER_X11_TEXTURE_PIXMAP (actor);
ClutterX11TexturePixmapPrivate *priv = texture->priv;
CLUTTER_ACTOR_CLASS (clutter_x11_texture_pixmap_parent_class)->
realize (actor);
clutter_x11_texture_pixmap_update_area_real (texture,
0, 0,
priv->pixmap_width,
priv->pixmap_height);
}
static void
clutter_x11_texture_pixmap_class_init (ClutterX11TexturePixmapClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
GParamSpec *pspec;
ClutterBackend *default_backend;
@ -650,8 +512,6 @@ clutter_x11_texture_pixmap_class_init (ClutterX11TexturePixmapClass *klass)
object_class->set_property = clutter_x11_texture_pixmap_set_property;
object_class->get_property = clutter_x11_texture_pixmap_get_property;
actor_class->realize = clutter_x11_texture_pixmap_realize;
klass->update_area = clutter_x11_texture_pixmap_update_area_real;
pspec = g_param_spec_ulong ("pixmap",
@ -799,9 +659,11 @@ clutter_x11_texture_pixmap_class_init (ClutterX11TexturePixmapClass *klass)
* @width: The width of the damage region
* @height: The height of the damage region
*
* ::queue-damage-redraw is emitted to notify that some sub-region of the
* underlying pixmap has changed and you need to queue a
* corresponding redraw for the actor.
* ::queue-damage-redraw is emitted to notify that some sub-region
* of the texture has been changed (either by an automatic damage
* update or by an explicit call to
* clutter_x11_texture_pixmap_update_area). This usually means a
* redraw needs to be queued for the actor.
*
* The default handler will queue a clipped redraw in response to
* the damage, using the assumption that the pixmap is being painted
@ -846,196 +708,12 @@ clutter_x11_texture_pixmap_update_area_real (ClutterX11TexturePixmap *texture,
gint width,
gint height)
{
ClutterX11TexturePixmapPrivate *priv;
Display *dpy;
XImage *image;
char *first_pixel;
GError *error = NULL;
guint bytes_per_line;
char *data;
gboolean data_allocated = FALSE;
int err_code;
CoglHandle cogl_texture;
if (!CLUTTER_ACTOR_IS_REALIZED (texture))
return;
cogl_texture = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (texture));
priv = texture->priv;
dpy = clutter_x11_get_default_display();
if (!priv->pixmap)
return;
if (priv->shminfo.shmid == -1)
try_alloc_shm (texture);
clutter_x11_trap_x_errors ();
if (priv->have_shm)
{
image =
XShmCreateImage(dpy,
DefaultVisual(dpy,
clutter_x11_get_default_screen()),
priv->depth,
ZPixmap,
NULL,
&priv->shminfo,
width,
height);
image->data = priv->shminfo.shmaddr;
XShmGetImage (dpy, priv->pixmap, image, x, y, AllPlanes);
first_pixel = image->data;
}
else
{
if (!priv->image)
{
priv->image = XGetImage (dpy,
priv->pixmap,
0, 0,
priv->pixmap_width, priv->pixmap_height,
AllPlanes,
ZPixmap);
first_pixel = priv->image->data + priv->image->bytes_per_line * y
+ x * priv->image->bits_per_pixel/8;
}
else
{
XGetSubImage (dpy,
priv->pixmap,
x, y,
width, height,
AllPlanes,
ZPixmap,
priv->image,
x, y);
first_pixel = priv->image->data + priv->image->bytes_per_line * y
+ x * priv->image->bits_per_pixel/8;
}
image = priv->image;
}
XSync (dpy, FALSE);
if ((err_code = clutter_x11_untrap_x_errors ()))
{
g_warning ("Failed to get XImage of pixmap: %lx, removing",
priv->pixmap);
/* safe to assume pixmap has gone away? - therefor reset */
clutter_x11_texture_pixmap_set_pixmap (texture, None);
return;
}
if (priv->depth == 24)
{
guint xpos, ypos;
for (ypos=0; ypos<height; ypos++)
for (xpos=0; xpos<width; xpos++)
{
char *p = first_pixel + image->bytes_per_line*ypos
+ xpos * 4;
p[3] = 0xFF;
}
data = first_pixel;
bytes_per_line = image->bytes_per_line;
}
else if (priv->depth == 16)
{
guint xpos, ypos;
data = g_malloc (height * width * 4);
data_allocated = TRUE;
bytes_per_line = width * 4;
for (ypos=0; ypos<height; ypos++)
for (xpos=0; xpos<width; xpos++)
{
char *src_p = first_pixel + image->bytes_per_line * ypos
+ xpos * 2;
guint16 *src_pixel = (guint16 *)src_p;
char *dst_p = data + bytes_per_line * ypos + xpos * 4;
guint32 *dst_pixel = (guint32 *)dst_p;
*dst_pixel =
((((*src_pixel << 3) & 0xf8) | ((*src_pixel >> 2) & 0x7)) | \
(((*src_pixel << 5) & 0xfc00) | ((*src_pixel >> 1) & 0x300)) | \
(((*src_pixel << 8) & 0xf80000) | ((*src_pixel << 3) & 0x70000)))
| 0xff000000;
}
}
else if (priv->depth == 32)
{
bytes_per_line = image->bytes_per_line;
data = first_pixel;
}
else
return;
/* For debugging purposes, un comment to simply generate dummy
* pixmap data. (A Green background and Blue cross) */
#if 0
{
guint xpos, ypos;
if (data_allocated)
g_free (data);
data_allocated = TRUE;
data = g_malloc (width*height*4);
bytes_per_line = width *4;
for (ypos=0; ypos<height; ypos++)
for (xpos=0; xpos<width; xpos++)
{
char *p = data + width*4*ypos + xpos * 4;
guint32 *pixel = (guint32 *)p;
if ((xpos > width/2 && xpos <= (width/2) + width/4)
|| (ypos > height/2 && ypos <= (height/2) + height/4))
*pixel=0xff0000ff;
else
*pixel=0xff00ff00;
}
}
#endif
if (x != 0 || y != 0 ||
width != priv->pixmap_width || height != priv->pixmap_height)
clutter_texture_set_area_from_rgb_data (CLUTTER_TEXTURE (texture),
(guint8 *)data,
TRUE,
x, y,
width, height,
bytes_per_line,
4,
CLUTTER_TEXTURE_RGB_FLAG_BGR |
CLUTTER_TEXTURE_RGB_FLAG_PREMULT,
&error);
else
clutter_texture_set_from_rgb_data (CLUTTER_TEXTURE (texture),
(guint8 *)data,
TRUE,
width, height,
bytes_per_line,
4,
CLUTTER_TEXTURE_RGB_FLAG_BGR |
CLUTTER_TEXTURE_RGB_FLAG_PREMULT,
&error);
if (error)
{
g_warning ("Error when uploading from pixbuf: %s",
error->message);
g_error_free (error);
}
if (data_allocated)
g_free (data);
if (priv->have_shm)
XFree (image);
if (cogl_texture)
cogl_texture_pixmap_x11_update_area (cogl_texture, x, y, width, height);
}
/**
@ -1121,6 +799,8 @@ clutter_x11_texture_pixmap_set_pixmap (ClutterX11TexturePixmap *texture,
Status status = 0;
gboolean new_pixmap = FALSE, new_pixmap_width = FALSE;
gboolean new_pixmap_height = FALSE, new_pixmap_depth = FALSE;
CoglHandle material;
CoglHandle cogl_texture;
ClutterX11TexturePixmapPrivate *priv;
@ -1130,6 +810,12 @@ clutter_x11_texture_pixmap_set_pixmap (ClutterX11TexturePixmap *texture,
clutter_x11_trap_x_errors ();
/* Get rid of the existing Cogl texture early because it may try to
use the pixmap which we might destroy */
material = clutter_texture_get_cogl_material (CLUTTER_TEXTURE (texture));
if (material)
cogl_material_set_layer (material, 0, COGL_INVALID_HANDLE);
status = XGetGeometry (clutter_x11_get_default_display(),
(Drawable)pixmap,
&root,
@ -1148,12 +834,6 @@ clutter_x11_texture_pixmap_set_pixmap (ClutterX11TexturePixmap *texture,
width = height = depth = 0;
}
if (priv->image)
{
XDestroyImage (priv->image);
priv->image = NULL;
}
if (priv->pixmap != pixmap)
{
if (priv->pixmap && priv->owns_pixmap)
@ -1162,12 +842,10 @@ clutter_x11_texture_pixmap_set_pixmap (ClutterX11TexturePixmap *texture,
priv->pixmap = pixmap;
new_pixmap = TRUE;
/* The damage object is created on the window if there is any
* but if there is no window, then we create it directly on
* the pixmap, so it needs to be recreated with a change in
* pixmap.
/* The damage object is created on the pixmap, so it needs to be
* recreated with a change in pixmap.
*/
if (priv->automatic_updates && new_pixmap && !priv->window)
if (priv->automatic_updates && new_pixmap)
{
free_damage_resources (texture);
create_damage_resources (texture);
@ -1205,19 +883,13 @@ clutter_x11_texture_pixmap_set_pixmap (ClutterX11TexturePixmap *texture,
if (new_pixmap_depth)
g_object_notify (G_OBJECT (texture), "pixmap-depth");
free_shm_resources (texture);
if (priv->depth != 0 &&
priv->pixmap != None &&
priv->pixmap_width != 0 &&
priv->pixmap_height != 0)
if (pixmap)
{
if (CLUTTER_ACTOR_IS_REALIZED (texture))
clutter_x11_texture_pixmap_update_area (texture,
0, 0,
priv->pixmap_width,
priv->pixmap_height);
cogl_texture = cogl_texture_pixmap_x11_new (pixmap, FALSE);
clutter_texture_set_cogl_texture (CLUTTER_TEXTURE (texture),
cogl_texture);
cogl_handle_unref (cogl_texture);
update_pixmap_damage_object (texture);
}
/*
@ -1310,12 +982,6 @@ clutter_x11_texture_pixmap_set_window (ClutterX11TexturePixmap *texture,
clutter_x11_add_filter (on_x_event_filter_too, (gpointer)texture);
}
if (priv->automatic_updates)
{
free_damage_resources (texture);
create_damage_resources (texture);
}
g_object_ref (texture);
g_object_notify (G_OBJECT (texture), "window");
@ -1509,6 +1175,5 @@ clutter_x11_texture_pixmap_set_automatic (ClutterX11TexturePixmap *texture,
free_damage_resources (texture);
priv->automatic_updates = setting;
}