[Piglit] [PATCH] glean/pixelformats: restrict GL_ABGR_EXT format test to the types in the spec

[Samuel Iglesias Gonsalvez]

Packed types are not explicitly allowed to work with GL_ABGR_EXT format in
the OpenGL spec nor GL_EXT_abgr spec.

NVIDIA allows it but AMD doesn't and Intel driver hasn't allowed it with
UNSIGNED_SHORT_5_5_5_1 and UNSIGNED_INT_10_10_10_2 as of c471b09bf4.

Signed-off-by: Samuel Iglesias Gonsalvez <siglesias at igalia.com>
---
 tests/glean/tpixelformats.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/glean/tpixelformats.cpp b/tests/glean/tpixelformats.cpp
index 27881bf..b040957 100644
--- a/tests/glean/tpixelformats.cpp
+++ b/tests/glean/tpixelformats.cpp
@@ -612,6 +612,12 @@ PixelFormatsTest::CompatibleFormatAndType(GLenum format, GLenum datatype) const
 	if (format == GL_ABGR_EXT && !haveABGR)
 		return false;
 
+	// Special case: GL_ABGR_EXT can't be used with packed types
+	// because they are not explicitely allowed by GL_ABGR_EXT spec or
+	// OpenGL spec.
+	if (format == GL_ABGR_EXT && IsPackedType(datatype))
+		return false;
+
 	if (format == GL_RG && !haveRG)
 		return false;
 
-- 
2.1.0