An implementation bug in mesa caused these values to be computed
incorrectly. Make sure that they work as defined.
Signed-off-by: Ilia Mirkin <imir...@alum.mit.edu>
---
.../execution/global-invocation-id.shader_test | 44 ++++++++++++++++++++++
1 file changed, 44 insertions(+)
create mode 100644
tests/spec/arb_compute_variable_group_size/execution/global-invocation-id.shader_test
diff --git
a/tests/spec/arb_compute_variable_group_size/execution/global-invocation-id.shader_test
b/tests/spec/arb_compute_variable_group_size/execution/global-invocation-id.shader_test
new file mode 100644
index 000000000..24f2f1d05
--- /dev/null
+++
b/tests/spec/arb_compute_variable_group_size/execution/global-invocation-id.shader_test
@@ -0,0 +1,44 @@
+# Simple test that verifies gl_GlobalInvocationID derived values are
+# computed properly.
+
+[require]
+GL >= 3.3
+GLSL >= 3.30
+GL_ARB_compute_shader
+GL_ARB_compute_variable_group_size
+GL_ARB_shader_storage_buffer_object
+
+[compute shader]
+#version 330
+#extension GL_ARB_compute_shader: require
+#extension GL_ARB_compute_variable_group_size: require
+#extension GL_ARB_shader_storage_buffer_object: require
+
+layout(local_size_variable) in;
+
+layout(std430)
+buffer SSBO {
+ uvec2 id[4];
+};
+
+void main()
+{
+ uint g = gl_GlobalInvocationID.x;
+ uint l = gl_LocalInvocationID.x;
+ uint t = gl_WorkGroupID.x * gl_LocalGroupSizeARB.x +
gl_LocalInvocationID.x;
+ id[t] = uvec2(g, l);
+}
+
+[test]
+ssbo 0 32
+
+compute group size 2 1 1 2 1 1
+
+probe ssbo uint 0 0 == 0
+probe ssbo uint 0 4 == 0
+probe ssbo uint 0 8 == 1
+probe ssbo uint 0 12 == 1
+probe ssbo uint 0 16 == 2
+probe ssbo uint 0 20 == 0
+probe ssbo uint 0 24 == 3
+probe ssbo uint 0 28 == 1
--
2.13.6
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