[Piglit] [PATCH 14/19] arb_gpu_shader5: Add a constant eval findLSB execution test.

[Matt Turner]

v2: Call nonexistent bad_constant_folding() function if test fails.
---
 .../built-in-functions/const-findLSB.shader_test   | 59 ++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 tests/spec/arb_gpu_shader5/execution/built-in-functions/const-findLSB.shader_test

diff --git a/tests/spec/arb_gpu_shader5/execution/built-in-functions/const-findLSB.shader_test b/tests/spec/arb_gpu_shader5/execution/built-in-functions/const-findLSB.shader_test
new file mode 100644
index 0000000..b62df92
--- /dev/null
+++ b/tests/spec/arb_gpu_shader5/execution/built-in-functions/const-findLSB.shader_test
@@ -0,0 +1,59 @@
+[require]
+GLSL >= 1.50
+GL_ARB_gpu_shader5
+
+[vertex shader]
+in vec4 vertex;
+
+void main() {
+	gl_Position = vertex;
+}
+
+[fragment shader]
+#extension GL_ARB_gpu_shader5 : enable
+
+void bad_constant_folding();
+
+out vec4 color;
+
+void main()
+{
+	/* Green if both pass. */
+	color = vec4(0.0, 1.0, 0.0, 1.0);
+
+	if (ivec4(-1) != findLSB(ivec4(0)))
+		bad_constant_folding();
+	else if (ivec4(-1) != findLSB(uvec4(0u)))
+		bad_constant_folding();
+
+	if (ivec4(0, 1, 0, 2) != findLSB(ivec4(1, 2, 3, 4)))
+		bad_constant_folding();
+	else if (ivec4(0, 1, 0, 2) != findLSB(uvec4(1u, 2u, 3u, 4u)))
+		bad_constant_folding();
+
+	if (ivec4(10, 9, 8, 7) != findLSB(ivec4(1024, 512, 256, 128)))
+		bad_constant_folding();
+	else if (ivec4(10, 9, 8, 7) != findLSB(uvec4(1024u, 512u, 256u, 128u)))
+		bad_constant_folding();
+
+	if (ivec4(0, 1, 0, 2) != findLSB(ivec4(-1, -2, -3, -4)))
+		bad_constant_folding();
+	else if (ivec4(0, 1, 0, 2) != findLSB(uvec4(0xFFFFFFFFu, 0xFFFFFFFEu, 0xFFFFFFFDu, 0xFFFFFFFCu)))
+		bad_constant_folding();
+
+	if (ivec4(31, 30, 29, 28) != findLSB(ivec4(-2147483648, 1073741824, 536870912, 268435456)))
+		bad_constant_folding();
+	else if (ivec4(31, 30, 29, 28) != findLSB(uvec4(0x80000000u, 0x40000000u, 0x20000000u, 0x10000000u)))
+		bad_constant_folding();
+}
+
+[vertex data]
+vertex/float/2
+-1.0 -1.0
+ 1.0 -1.0
+ 1.0  1.0
+-1.0  1.0
+
+[test]
+draw arrays GL_TRIANGLE_FAN 0 4
+probe all rgba 0.0 1.0 0.0 1.0
-- 
1.8.1.5