Test that TCS per-vertex outputs which are used only in TCS stage are not converted to local variables and indeed share data within the patch.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104297 Signed-off-by: Danylo Piliaiev <danylo.pilia...@globallogic.com> --- .../tcs-output-unmatched.shader_test | 65 +++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 tests/spec/arb_tessellation_shader/execution/tcs-output-unmatched.shader_test diff --git a/tests/spec/arb_tessellation_shader/execution/tcs-output-unmatched.shader_test b/tests/spec/arb_tessellation_shader/execution/tcs-output-unmatched.shader_test new file mode 100644 index 000000000..de1b0143b --- /dev/null +++ b/tests/spec/arb_tessellation_shader/execution/tcs-output-unmatched.shader_test @@ -0,0 +1,65 @@ +# Test that TCS per-vertex outputs which are used only in +# TCS stage are not converted to local variables +# and indeed share data within the patch. + +[require] +GLSL >= 1.50 +GL_ARB_tessellation_shader +GL_ARB_separate_shader_objects + +[vertex shader passthrough] + + +[tessellation control shader] +#extension GL_ARB_tessellation_shader: require +#extension GL_ARB_separate_shader_objects: require +#extension GL_ARB_shader_atomic_counters: require +#extension GL_ARB_shader_atomic_counter_ops: require +layout(vertices = 3) out; + +layout(location=0) out vec4 out_unused_in_tes[]; + +layout(binding = 0) uniform atomic_uint mismatches; + +void main() { + out_unused_in_tes[gl_InvocationID] = gl_in[gl_InvocationID].gl_Position; + + barrier(); + + if(out_unused_in_tes[0] != gl_in[0].gl_Position || + out_unused_in_tes[1] != gl_in[1].gl_Position || + out_unused_in_tes[2] != gl_in[2].gl_Position) { + atomicCounterIncrement(mismatches); + } +} + + +[tessellation evaluation shader] +#extension GL_ARB_tessellation_shader: require +layout(triangles) in; + +void main() { + gl_Position = vec4(0); +} + + +[fragment shader] + +void main() +{ + gl_FragColor = vec4(1.0); +} + +[vertex data] +piglit_vertex/float/4 +1 1 1 1 +2 2 2 2 +3 3 3 3 + +[test] +atomic counters 1 + +patch parameter vertices 3 +draw arrays GL_PATCHES 0 3 + +probe atomic counter 0 == 0 -- 2.20.1 _______________________________________________ Piglit mailing list Piglit@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/piglit
