In all GLSL ES versions output variables in fragment shader are allowed to be invariant.
From Section 4.6.1 ("The Invariant Qualifier") GLSL ES 1.00 spec: "Only the following variables may be declared as invariant: ... - Built-in special variables output from the fragment shader." From Section 4.6.1 ("The Invariant Qualifier") GLSL ES 3.00 spec: "Only variables output from a shader can be candidates for invariance." Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107842 Signed-off-by: Danylo Piliaiev <danylo.pilia...@globallogic.com> --- .../glslparsertest/shaders/invariant.V100.frag | 18 ++++++++++++++++++ .../glslparsertest/shaders/invariant.V300.frag | 16 ++++++++++++++++ 2 files changed, 34 insertions(+) create mode 100644 tests/glslparsertest/shaders/invariant.V100.frag create mode 100644 tests/glslparsertest/shaders/invariant.V300.frag diff --git a/tests/glslparsertest/shaders/invariant.V100.frag b/tests/glslparsertest/shaders/invariant.V100.frag new file mode 100644 index 000000000..a6463d1dd --- /dev/null +++ b/tests/glslparsertest/shaders/invariant.V100.frag @@ -0,0 +1,18 @@ +// [config] +// expect_result: pass +// glsl_version: 1.00 +// +// [end config] + +/* From Section 4.6.1 ("The Invariant Qualifier") GLSL ES 1.00 spec: + * + * "Only the following variables may be declared as invariant: + * Built-in special variables output from the fragment shader." + */ + +#version 100 + +invariant gl_FragColor; +invariant gl_FragData; + +void main() { } diff --git a/tests/glslparsertest/shaders/invariant.V300.frag b/tests/glslparsertest/shaders/invariant.V300.frag new file mode 100644 index 000000000..8d7707d8c --- /dev/null +++ b/tests/glslparsertest/shaders/invariant.V300.frag @@ -0,0 +1,16 @@ +// [config] +// expect_result: pass +// glsl_version: 3.00 +// +// [end config] + +/* From Section 4.6.1 ("The Invariant Qualifier") GLSL ES 3.00 spec: + * + * "Only variables output from a shader can be candidates for invariance." + */ + +#version 300 es + +invariant out highp vec4 test; + +void main() { } -- 2.20.1 _______________________________________________ Piglit mailing list Piglit@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/piglit