From: Nicolai Hähnle <nicolai.haeh...@amd.com>
---
.../fs-readFirstInvocation-uint-if.shader_test | 32 ++++++++++++++
.../fs-readFirstInvocation-uint-loop.shader_test | 49 ++++++++++++++++++++++
2 files changed, 81 insertions(+)
create mode 100644
tests/spec/arb_shader_ballot/execution/fs-readFirstInvocation-uint-if.shader_test
create mode 100644
tests/spec/arb_shader_ballot/execution/fs-readFirstInvocation-uint-loop.shader_test
diff --git
a/tests/spec/arb_shader_ballot/execution/fs-readFirstInvocation-uint-if.shader_test
b/tests/spec/arb_shader_ballot/execution/fs-readFirstInvocation-uint-if.shader_test
new file mode 100644
index 0000000..0c63436
--- /dev/null
+++
b/tests/spec/arb_shader_ballot/execution/fs-readFirstInvocation-uint-if.shader_test
@@ -0,0 +1,32 @@
+[require]
+GL >= 3.2
+GLSL >= 1.50
+GL_ARB_shader_ballot
+
+[vertex shader passthrough]
+
+[fragment shader]
+#version 150
+#extension GL_ARB_shader_ballot : require
+
+out vec4 outcolor;
+
+void main() {
+ uint first_invocation =
readFirstInvocationARB(gl_SubGroupInvocationARB);
+
+ outcolor = vec4(0.0, 1.0, 0.0, 1.0);
+
+ if (first_invocation != gl_SubGroupInvocationARB) {
+ uint new_first_invocation =
readFirstInvocationARB(gl_SubGroupInvocationARB);
+
+ if (first_invocation == new_first_invocation)
+ outcolor = vec4(1.0, 0.0, first_invocation / 255.0,
gl_SubGroupInvocationARB / 255.0);
+ }
+}
+
+[test]
+clear color 0.0 0.0 0.0 0.0
+clear
+
+draw rect -1 -1 2 2
+probe all rgba 0.0 1.0 0.0 1.0
diff --git
a/tests/spec/arb_shader_ballot/execution/fs-readFirstInvocation-uint-loop.shader_test
b/tests/spec/arb_shader_ballot/execution/fs-readFirstInvocation-uint-loop.shader_test
new file mode 100644
index 0000000..d1f98f4
--- /dev/null
+++
b/tests/spec/arb_shader_ballot/execution/fs-readFirstInvocation-uint-loop.shader_test
@@ -0,0 +1,49 @@
+[require]
+GL >= 3.2
+GLSL >= 1.50
+GL_ARB_shader_ballot
+GL_ARB_gpu_shader_int64
+
+[vertex shader passthrough]
+
+[fragment shader]
+#version 150
+#extension GL_ARB_shader_ballot : require
+#extension GL_ARB_gpu_shader_int64 : require
+
+out vec4 outcolor;
+
+void main() {
+ uint64_t active_set = ballotARB(true);
+ int i;
+
+ int num_active = 0;
+ for (i = 0; i < 64; ++i) {
+ if ((active_set & (1ul << i)) != 0ul)
+ num_active++;
+ }
+
+ /* This loop should terminate even without the loop condition. We simply
+ * add the condition here to ensure termination when there are shader
+ * compiler bugs.
+ */
+ for (i = 0; i < num_active; ++i) {
+ uint first_invocation =
readFirstInvocationARB(gl_SubGroupInvocationARB);
+
+ if (first_invocation == gl_SubGroupInvocationARB)
+ break;
+ }
+
+ if (i >= num_active) {
+ outcolor = vec4(1.0, 0.0, i / 255.0, gl_SubGroupInvocationARB /
255.0);
+ } else {
+ outcolor = vec4(0.0, 1.0, 0.0, 1.0);
+ }
+}
+
+[test]
+clear color 0.0 0.0 0.0 0.0
+clear
+
+draw rect -1 -1 2 2
+probe all rgba 0.0 1.0 0.0 1.0
--
2.9.3
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