[Piglit] [PATCH] sample-depth: use tri-strip and rgba visual

[Ilia Mirkin]

This fixes it on nvc0 (and I'm guessing nv50). It appears that NVIDIA
hw tessellates in an unexpected fashion. We also need an RGBA visual
since we check all 4 color components.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
---
 tests/spec/arb_texture_multisample/sample-depth.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tests/spec/arb_texture_multisample/sample-depth.c b/tests/spec/arb_texture_multisample/sample-depth.c
index 6334833..d8e7d33 100644
--- a/tests/spec/arb_texture_multisample/sample-depth.c
+++ b/tests/spec/arb_texture_multisample/sample-depth.c
@@ -33,7 +33,7 @@
 PIGLIT_GL_TEST_CONFIG_BEGIN
 
     config.supports_gl_compat_version = 30;
-    config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
+    config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
 
 PIGLIT_GL_TEST_CONFIG_END
 
@@ -61,11 +61,11 @@ piglit_display(void)
 
 	glEnable(GL_DEPTH_TEST);
 
-	glBegin(GL_QUADS);
+	glBegin(GL_TRIANGLE_STRIP);
 		glVertex3f(-1.0f, -1.0f,  1.0f);
 		glVertex3f( 1.0f, -1.0f, -1.0f);
-		glVertex3f( 1.0f,  1.0f,  1.0f);
 		glVertex3f(-1.0f,  1.0f, -1.0f);
+		glVertex3f( 1.0f,  1.0f,  1.0f);
 	glEnd();
 
 	glDisable(GL_DEPTH_TEST);
-- 
2.3.6