[Piglit] [PATCH] spec/glsl-es-1.00/linker: test pass cases for invariant conditions

[Lars Hamre]

Gentle ping, if nobody has any issues I would appreciate a push.
In reference to this mesa patch:
https://lists.freedesktop.org/archives/mesa-dev/2016-May/116073.html

Regards,
Lars Hamre

On Fri, May 6, 2016 at 4:23 PM, Lars Hamre <chemecse at gmail.com> wrote:
> These test the cases where gl_FragCoord and gl_PointCoord are
> allowed to be declared invariant.
>
> Signed-off-by: Lars Hamre <chemecse at gmail.com>
>
> ---
>
> NOTE: someone with access will need to commit this after the
>       review process
>
>  .../linker/glsl-fcoord-invariant-pass.shader_test  | 27 +++++++++++++++++++++
>  .../linker/glsl-pcoord-invariant-pass.shader_test  | 28 ++++++++++++++++++++++
>  2 files changed, 55 insertions(+)
>  create mode 100644 tests/spec/glsl-es-1.00/linker/glsl-fcoord-invariant-pass.shader_test
>  create mode 100644 tests/spec/glsl-es-1.00/linker/glsl-pcoord-invariant-pass.shader_test
>
> diff --git a/tests/spec/glsl-es-1.00/linker/glsl-fcoord-invariant-pass.shader_test b/tests/spec/glsl-es-1.00/linker/glsl-fcoord-invariant-pass.shader_test
> new file mode 100644
> index 0000000..76348a6
> --- /dev/null
> +++ b/tests/spec/glsl-es-1.00/linker/glsl-fcoord-invariant-pass.shader_test
> @@ -0,0 +1,27 @@
> +#
> +# OpenGL ES 1.00 specification "Invariance and linkage":
> +#
> +#    "For the built-in special variables, gl_FragCoord can
> +#    only be declared invariant if and only if gl_Position is
> +#    declared invariant. Similarly gl_PointCoord can only be
> +#    declared invariant if and only if gl_PointSize is declared
> +#    invariant. It is an error to declare gl_FrontFacing as invariant."
> +#
> +[require]
> +GL ES >= 2.0
> +GLSL ES >= 1.00
> +
> +[vertex shader]
> +invariant gl_Position;
> +void main() {
> +       gl_Position = vec4(0.0);
> +}
> +
> +[fragment shader]
> +invariant gl_FragCoord;
> +void main() {
> +       gl_FragColor = vec4(gl_FragCoord.x);
> +}
> +
> +[test]
> +link success
> diff --git a/tests/spec/glsl-es-1.00/linker/glsl-pcoord-invariant-pass.shader_test b/tests/spec/glsl-es-1.00/linker/glsl-pcoord-invariant-pass.shader_test
> new file mode 100644
> index 0000000..c0e9673
> --- /dev/null
> +++ b/tests/spec/glsl-es-1.00/linker/glsl-pcoord-invariant-pass.shader_test
> @@ -0,0 +1,28 @@
> +#
> +# OpenGL ES 1.00 specification "Invariance and linkage":
> +#
> +#    "For the built-in special variables, gl_FragCoord can
> +#    only be declared invariant if and only if gl_Position is
> +#    declared invariant. Similarly gl_PointCoord can only be
> +#    declared invariant if and only if gl_PointSize is declared
> +#    invariant. It is an error to declare gl_FrontFacing as invariant."
> +#
> +[require]
> +GL ES >= 2.0
> +GLSL ES >= 1.00
> +
> +[vertex shader]
> +invariant gl_PointSize;
> +void main() {
> +       gl_PointSize = 1.0;
> +       gl_Position = vec4(0.0);
> +}
> +
> +[fragment shader]
> +invariant gl_PointCoord;
> +void main() {
> +       gl_FragColor = vec4(gl_PointCoord.x);
> +}
> +
> +[test]
> +link success
> --
> 2.5.5
>