glamor: Enable fill acceleration and flip opposite for pixmaps too.

Here's my theory for the flipping: It doesn't really matter which
orientation we store the pixmaps if we don't scan them out.  We have
to flip coordinates for the window system framebuffer.  Doing so for
everything else makes things consistent.  I'm not sure how this will
interact with future GLX integration, though.

glamor/glamor_core.c

@@ -177,12 +177,7 @@ glamor_set_transform_for_pixmap(PixmapPtr pixmap,
     glUniform1fARB(uniform_locations->x_bias, -pixmap->drawable.width / 2.0f);
     glUniform1fARB(uniform_locations->x_scale, 2.0f / pixmap->drawable.width);
     glUniform1fARB(uniform_locations->y_bias, -pixmap->drawable.height / 2.0f);
-    if (pixmap == screen_pixmap)
-	glUniform1fARB(uniform_locations->y_scale,
-		       -2.0f / pixmap->drawable.height);
-    else
-	glUniform1fARB(uniform_locations->y_scale,
-		       2.0f / pixmap->drawable.height);
+    glUniform1fARB(uniform_locations->y_scale, -2.0f / pixmap->drawable.height);
 }
 
 GLint

glamor/glamor_fill.c

@@ -42,8 +42,6 @@ glamor_fill(DrawablePtr drawable,
 {
     PixmapPtr dst_pixmap = glamor_get_drawable_pixmap(drawable);
 
-    assert(0);
-
     switch (gc->fillStyle) {
     case FillSolid:
 	glamor_solid(dst_pixmap,

glamor/glamor_polyfillrect.c

@@ -52,7 +52,8 @@ glamor_poly_fill_rect(DrawablePtr drawable,
     int		    xorg, yorg;
     int		    n;
 
-    goto fail;
+    if (gc->fillStyle != FillSolid)
+	goto fail;
 
     xorg = drawable->x;
     yorg = drawable->y;