[Piglit] [PATCH 2/2] glsl-fs-clamp-5: New test for a bug in the i965 driver.

Eric Anholt eric at anholt.net
Mon Nov 26 14:38:55 PST 2012


---
 tests/shaders/glsl-fs-clamp-5.shader_test |   25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 tests/shaders/glsl-fs-clamp-5.shader_test

diff --git a/tests/shaders/glsl-fs-clamp-5.shader_test b/tests/shaders/glsl-fs-clamp-5.shader_test
new file mode 100644
index 0000000..0bcdaed
--- /dev/null
+++ b/tests/shaders/glsl-fs-clamp-5.shader_test
@@ -0,0 +1,25 @@
+[require]
+GLSL >= 1.10
+
+[vertex shader]
+void main()
+{
+	gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+}
+
+[fragment shader]
+uniform vec4 color;
+
+void main()
+{
+	/* The i965 driver failed when it was faced with a saturate of
+	 * a uniform -- https://bugs.freedesktop.org/show_bug.cgi?id=57166
+	 */
+	gl_FragColor = clamp(color, 0.0, 1.0) * 0.5 + 0.25;
+}
+
+[test]
+uniform vec4 color -1.0 1.0 2.0 0.0
+
+draw rect -1 -1 2 2
+probe all rgba 0.25 0.75 0.75 0.25
-- 
1.7.10.4



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