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glamor: Don't use glamor_pixmap_type currently.

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Added comments to glamor_pixmap_create. To be refined in the future.
We need to identify whether a pixmap is a CPU memory pixmap or a
GPU pixmap. Current implementation is not correct. There are three
cases:

1. Too large pixmap, we direct it to CPU memory pixmap.
2. w ==0 ||  h == 0 pixmap, this case has two possibilities:
   2.1 It will become a screen pixmap latter, then it should be
       GPU type.
   2.2 It's a scratch pixmap or created from a share memory, then
       it should belong to CPU memory.

XXX, need to be refined latter.
This commit is contained in:
Zhigang Gong 2011-06-01 17:54:01 +08:00
parent 28835be1b8
commit b8ce483f58
1 changed files with 10 additions and 6 deletions
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16
glamor/glamor.c
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@ -67,6 +67,7 @@ glamor_set_pixmap_texture(PixmapPtr pixmap, int w, int h, unsigned int tex)
glamor_pixmap_private *pixmap_priv;
pixmap_priv = glamor_get_pixmap_private(pixmap);
assert(pixmap_priv);
pixmap_priv->tex = tex;
/* Create a framebuffer object wrapping the texture so that we can render
@ -87,6 +88,12 @@ glamor_set_pixmap_texture(PixmapPtr pixmap, int w, int h, unsigned int tex)
}
/* XXX For the screen pixmap, the w and h maybe 0,0 too, but it should
* be GLAMOR_GL pixmap. Now, all the pixmap will have a valid pixmap_priv.
* This is not good enough. After we can identify which is the screen
* pixmap and which is not, then we can split the pixmap to exclusive
* two types GLAMOR_GL and GLAMOR_FB, and for those GLAMOR_FB pixmaps,
* we don't need to allocate pixmap_priv. */
static PixmapPtr
glamor_create_pixmap(ScreenPtr screen, int w, int h, int depth,
@ -96,7 +103,7 @@ glamor_create_pixmap(ScreenPtr screen, int w, int h, int depth,
GLenum format;
GLuint tex;
glamor_pixmap_private *pixmap_priv;
int type = GLAMOR_GL;
enum glamor_pixmap_type type = GLAMOR_GL;
if (w > 32767 || h > 32767)
return NullPixmap;
@ -111,7 +118,7 @@ glamor_create_pixmap(ScreenPtr screen, int w, int h, int depth,
7) / 8) + 3) & ~3,
NULL);
ErrorF("fallback to software fb for pixmap %p , %d x %d \n", pixmap, w, h);
} else
} else
pixmap = fbCreatePixmap (screen, 0, 0, depth, usage);
if (dixAllocatePrivates(&pixmap->devPrivates, PRIVATE_PIXMAP) != TRUE) {
@ -120,12 +127,9 @@ glamor_create_pixmap(ScreenPtr screen, int w, int h, int depth,
return NullPixmap;
}
if (w == 0 || h == 0 || type != GLAMOR_GL)
if (w == 0 || h == 0 || type == GLAMOR_FB)
return pixmap;
pixmap_priv = glamor_get_pixmap_private(pixmap);
pixmap_priv->type = type;
/* We should probably take advantage of ARB_fbo's allowance of GL_ALPHA.
* FBOs, which EXT_fbo forgot to do.
*/