[Piglit] [PATCH] internalformat_query(2): fix SAMPLES pname checks for RGB9_E5

[Antia Puentes]

SAMPLES and NUM_SAMPLE_COUNTS queries accept internalformats which
are defined as color-, depth- or stencil-renderable. RGB9_E5 is marked
as non color-renderable in OpenGL 4.6, however if the
EXT_texture_shared_exponent extension is exposed it must be considered
as such. The later was discussed in:
https://github.com/KhronosGroup/OpenGL-API/issues/32
---
 tests/spec/arb_internalformat_query/api-errors.c   | 16 ++++++++++++++-
 .../arb_internalformat_query2/samples-pnames.c     | 23 +++++++++++++++++++++-
 2 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/tests/spec/arb_internalformat_query/api-errors.c b/tests/spec/arb_internalformat_query/api-errors.c
index a174143a3..eabf6a8d5 100644
--- a/tests/spec/arb_internalformat_query/api-errors.c
+++ b/tests/spec/arb_internalformat_query/api-errors.c
@@ -128,7 +128,10 @@ static const GLenum invalid_formats[] = {
 	GL_BGRA_INTEGER_EXT,
 	GL_LUMINANCE_INTEGER_EXT,
 	GL_LUMINANCE_ALPHA_INTEGER_EXT,
-	GL_RGB9_E5
+};
+
+static const GLenum text_shared_exponent_formats[] = {
+	GL_RGB9_E5,
 };
 
 static const GLenum valid_pnames[] = {
@@ -295,6 +298,17 @@ piglit_init(int argc, char **argv)
 		   GL_INVALID_ENUM)
 		&& pass;
 
+	/* RGB9_E5 is defined as color-renderable if EXT_texture_shared_exponent
+	 * is exposed, otherwise INVALID_ENUM should be returned.
+	 */
+	if (!piglit_is_extension_supported("GL_EXT_texture_shared_exponent")) {
+		pass = try(valid_targets, ARRAY_SIZE(valid_targets),
+			   text_shared_exponent_formats, 1,
+			   valid_pnames, ARRAY_SIZE(valid_pnames),
+			   GL_INVALID_ENUM)
+			&& pass;
+	}
+
 	/* The GL_ARB_internalformat_query spec says:
 	 *
 	 *     "If the <target> parameter to GetInternalformativ is not one of
diff --git a/tests/spec/arb_internalformat_query2/samples-pnames.c b/tests/spec/arb_internalformat_query2/samples-pnames.c
index f6def23d0..48972705e 100644
--- a/tests/spec/arb_internalformat_query2/samples-pnames.c
+++ b/tests/spec/arb_internalformat_query2/samples-pnames.c
@@ -96,7 +96,10 @@ static const GLenum non_renderable_internalformats[] = {
 	GL_BGRA_INTEGER_EXT,
 	GL_LUMINANCE_INTEGER_EXT,
 	GL_LUMINANCE_ALPHA_INTEGER_EXT,
-	GL_RGB9_E5
+};
+
+static const GLenum text_shared_exponent_formats[] = {
+	GL_RGB9_E5,
 };
 
 enum piglit_result
@@ -217,6 +220,15 @@ check_num_sample_counts(void)
                            GL_NUM_SAMPLE_COUNTS, data)
                         && pass;
 
+		/* RGB9_E5 is not defined as color-renderable unless
+		 * EXT_texture_shared_exponent is exposed. */
+		if (!piglit_is_extension_supported("GL_EXT_texture_shared_exponent")) {
+			pass = try(valid_targets, ARRAY_SIZE(valid_targets),
+				   text_shared_exponent_formats, 1,
+				   GL_NUM_SAMPLE_COUNTS, data)
+				&& pass;
+		}
+
                 /*
                  *        ... or if <target> does not support
                  *        multiple samples (ie other than
@@ -266,6 +278,15 @@ check_samples(void)
                            GL_SAMPLES, data)
                         && pass;
 
+		/* RGB9_E5 is not defined as color-renderable unless
+		 * EXT_texture_shared_exponent is exposed. */
+		if (!piglit_is_extension_supported("GL_EXT_texture_shared_exponent")) {
+			pass = try(valid_targets, ARRAY_SIZE(valid_targets),
+				   text_shared_exponent_formats, 1,
+				   GL_SAMPLES, data)
+				&& pass;
+		}
+
                 /*
                  * or if <target> does not support multiple samples (ie other
                  * than TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY,
-- 
2.14.1