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glamor_create_picture: Fix the format matching method. 

We should not simply set a TEXTURE_DRM pixmap to a separated
texture pixmap. If the format is compatible with current fbo
then it is just fine to keep it as TEXTURE_DRM type and we
can safely fallback to DDX layer on it.

Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>
This commit is contained in:
Zhigang Gong 2012-01-18 17:07:25 +08:00 committed by Eric Anholt
parent 28fcd7cd01
commit 994a9ff7f5
2 changed files with 30 additions and 11 deletions
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20
glamor/glamor_picture.c
View File

@ -65,15 +65,21 @@ glamor_create_picture(PicturePtr picture)
* the uploading, we need to know the picture format. */
glamor_set_pixmap_type(pixmap, GLAMOR_MEMORY);
pixmap_priv = glamor_get_pixmap_private(pixmap);
}
if (pixmap_priv) {
pixmap_priv->is_picture = 1;
pixmap_priv->pict_format = picture->format;
/* XXX Some formats are compatible between glamor and ddx driver*/
if (pixmap_priv->type == GLAMOR_TEXTURE_DRM)
} else {
if (GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv)) {
/* If the picture format is not compatible with glamor fbo format,
* we have to mark this pixmap as a separated texture, and don't
* fallback to DDX layer. */
if (pixmap_priv->type == GLAMOR_TEXTURE_DRM
&& !glamor_pict_format_is_compatible(picture->format,
pixmap->drawable.depth))
glamor_set_pixmap_type(pixmap, GLAMOR_SEPARATE_TEXTURE);
}
}
pixmap_priv->is_picture = 1;
pixmap_priv->pict_format = picture->format;
return miCreatePicture(picture);
}

19
glamor/glamor_utils.h
View File

@ -232,18 +232,16 @@ gl_iformat_for_depth(int depth, GLenum * format)
case 8:
*format = GL_ALPHA;
break;
#endif
case 24:
*format = GL_RGB;
break;
#endif
default:
*format = GL_RGBA;
break;
}
}
static inline CARD32
format_for_pixmap(PixmapPtr pixmap)
{
@ -561,6 +559,21 @@ glamor_get_rgba_from_pixel(CARD32 pixel,
return TRUE;
}
inline static Bool glamor_pict_format_is_compatible(PictFormatShort pict_format, int depth)
{
GLenum iformat;
gl_iformat_for_depth(depth, &iformat);
switch (iformat) {
case GL_RGBA:
return (pict_format == PICT_a8r8g8b8 || pict_format == PICT_x8r8g8b8);
case GL_ALPHA:
return (pict_format == PICT_a8);
default:
return FALSE;
}
}
/* return TRUE if we can access this pixmap at DDX driver. */
inline static Bool glamor_ddx_fallback_check_pixmap(DrawablePtr drawable)
{