arb_gpu_shader5: Test using only the lsb from imulExtended in the fs.

1 files changed, 37 insertions, 0 deletions

diff --git a/tests/spec/arb_gpu_shader5/execution/built-in-functions/fs-imulExtended-only-lsb.shader_test b/tests/spec/arb_gpu_shader5/execution/built-in-functions/fs-imulExtended-only-lsb.shader_test
new file mode 100644
index 000000000..b87d74e0b
--- /dev/null
+++ b/tests/spec/arb_gpu_shader5/execution/built-in-functions/fs-imulExtended-only-lsb.shader_test
@@ -0,0 +1,37 @@
+[require]
+GLSL >= 1.50
+GL_ARB_gpu_shader5
+
+[vertex shader passthrough]
+
+[fragment shader]
+#extension GL_ARB_gpu_shader5 : enable
+
+out vec4 frag_color;
+
+uniform ivec4 x, y;
+uniform ivec4 expected_lsb;
+
+void main()
+{
+	frag_color = vec4(0.0, 1.0, 0.0, 1.0);
+
+	ivec4 msb, lsb;
+	imulExtended(x, y, msb, lsb);
+
+	if (lsb != expected_lsb)
+		frag_color.b = 1.0;
+}
+
+[test]
+uniform ivec4 x 1 1 1 1
+uniform ivec4 y 1 2 3 4
+uniform ivec4 expected_lsb 1 2 3 4
+draw rect -1 -1 2 2
+probe all rgba 0.0 1.0 0.0 1.0
+
+uniform ivec4 x -1 2 -131072 -131073
+uniform ivec4 y 1 -2 131072 131073
+uniform ivec4 expected_lsb -1 -4 0 4294705151
+draw rect -1 -1 2 2
+probe all rgba 0.0 1.0 0.0 1.0