[Piglit] [PATCH] gl-3.0: Fix required-sized-texture-formats for depth formats

[Chia-I Wu]

When a sized internal depth format is requested, implementations are allowed
to choose a format as closely as possible (whose definition is up to the
implementations) on GL 3.0.

Thanks to Kenneth Graunke for pointing this out.

Signed-off-by: Chia-I Wu <olv at lunarg.com>
---
 tests/spec/gl-3.0/required-sized-texture-formats.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/tests/spec/gl-3.0/required-sized-texture-formats.c b/tests/spec/gl-3.0/required-sized-texture-formats.c
index 79ea5b1..ed94470 100644
--- a/tests/spec/gl-3.0/required-sized-texture-formats.c
+++ b/tests/spec/gl-3.0/required-sized-texture-formats.c
@@ -36,6 +36,9 @@
  *      the internal component sizes and types shown for that format
  *      in tables 3.16- 3.17:"
  *
+ * Note that table 3.18, sized internal depth and stencil formats, is
+ * excluded.
+ *
  * In GL 3.1 this is changed to allow increased precision for the
  * required sized formats.  From page 118 of the GL 3.1 core spec PDF
  * (20090528):
@@ -194,7 +197,14 @@ piglit_init(int argc, char **argv)
 					format_pass = false;
 			} else if (target_version == 30) {
 				if (sizes[c] != get_channel_size(f, c)) {
-					format_pass = false;
+					if ((c == D || c == S) &&
+					    get_channel_size(f, c) > 0) {
+						/* any non-zero size will do */
+						if (sizes[c] <= 0)
+							format_pass = false;
+					} else {
+						format_pass = false;
+					}
 				}
 			} else {
 				if (sizes[c] < get_channel_size(f, c)) {
-- 
1.8.3.1