[cairo] [PATCH 5/6] xcb: Use image fallback for GOOD/BEST filters

[Bill Spitzak]

It will not use the fallback if the symbols in the previous patch
are turned on.

Also some code rearrangement to make this resemble the xlib version
more and to remove some suspect bugs. In particular meshes should not
work just because the translation is an integer.
---
 src/cairo-xcb-surface-render.c |   34 ++++++++++++++++------------------
 1 file changed, 16 insertions(+), 18 deletions(-)

diff --git a/src/cairo-xcb-surface-render.c b/src/cairo-xcb-surface-render.c
index edfa34c..21a89cc 100644
--- a/src/cairo-xcb-surface-render.c
+++ b/src/cairo-xcb-surface-render.c
@@ -394,11 +394,6 @@ _pattern_is_supported (uint32_t flags,
     if (pattern->type == CAIRO_PATTERN_TYPE_SOLID)
 	return TRUE;
 
-    if (! _cairo_matrix_is_integer_translation (&pattern->matrix, NULL, NULL)) {
-	if ((flags & CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM) == 0)
-	    return FALSE;
-    }
-
     switch (pattern->extend) {
     default:
 	ASSERT_NOT_REACHED;
@@ -412,18 +407,22 @@ _pattern_is_supported (uint32_t flags,
     }
 
     if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
-	cairo_filter_t filter;
-
-	filter = pattern->filter;
-	if (_cairo_matrix_is_pixel_exact (&pattern->matrix))
-	{
-	    filter = CAIRO_FILTER_NEAREST;
-	}
-
-	if (! (filter == CAIRO_FILTER_NEAREST || filter == CAIRO_FILTER_FAST)) {
-	    if ((flags & CAIRO_XCB_RENDER_HAS_FILTERS) == 0)
-		return FALSE;
+	switch (pattern->filter) {
+	case CAIRO_FILTER_FAST:
+	case CAIRO_FILTER_NEAREST:
+	    return (flags & CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM) ||
+		_cairo_matrix_is_integer_translation (&pattern->matrix, NULL, NULL);
+	case CAIRO_FILTER_GOOD:
+	    return flags & CAIRO_XCB_RENDER_HAS_FILTER_GOOD;
+	case CAIRO_FILTER_BEST:
+	    return flags & CAIRO_XCB_RENDER_HAS_FILTER_BEST;
+	case CAIRO_FILTER_BILINEAR:
+	case CAIRO_FILTER_GAUSSIAN:
+	default:
+	    return flags & CAIRO_XCB_RENDER_HAS_FILTERS;
 	}
+    } else if (pattern->type == CAIRO_PATTERN_TYPE_MESH) {
+	return FALSE;
     } else { /* gradient */
 	if ((flags & CAIRO_XCB_RENDER_HAS_GRADIENTS) == 0)
 	    return FALSE;
@@ -435,9 +434,8 @@ _pattern_is_supported (uint32_t flags,
 	{
 	    return FALSE;
 	}
+	return TRUE;
     }
-
-    return pattern->type != CAIRO_PATTERN_TYPE_MESH;
 }
 
 static void
-- 
1.7.9.5