Setting this bit (at the batch level, not the draw level!) switches to
[-1, 1] clipping instead of Metal's preferred [0, 1] clipping. Using
this bit allows us to drop the clip_halfz lowering we had before, saving
2 instructions in every vertex shader.
Fixes dEQP-GLES2.functional.depth_range.*
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17948>
Instead of using driver_location magic and hoping things work, make the
linkage between vertex and fragment shaders explicit. Thanks to the
coefficient register mechanism reverse-engineered and documented earlier
in this series, this does not require any shader keys to support
separable shaders. It just requires that we regenerate the coefficient
register binding tables at draw time, based on the varying layouts
decided by the compiler independently for the VS and FS. This is more
robust in the face of separate shaders.
This also gets us glProvokingVertex() support without shader keys.
After that, we don't need any of the remapping prepasses. For fragment
shaders, any old mapping will do, so we can assign coefficient registers
as we go (based on what the program actually uses, not nir_variable
information that might be stale by this point). We do want to cache
coefficient registers, particularly for fragcoord.w which is used for
perspective interpolation everywhere.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17198>
Lots of changes from reverse-engineering harder the interactions with
fp16 and noperspective and such, and comparing against the PowerVR
driver code in Mesa that's been released since this XML was
originally written.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17198>
This is set to true for all drivers that have a GLSL level
of support lower than 4.00. This matches the rule for setting the
GLSL IR option EmitNoIndirectSampler.
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16543>
This is to match other NIR terminology.
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15103>
Required to clamp array indices against the array sizes per the GLSL
spec. Metal also does this, implying it's required by the hardware for
correct operation.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14903>
This is where it should be rather than having to pass it into the
optimisation pass every time.
It also allows us to call the loop analysis pass without having to
duplicate these options which we will do later in this series.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12064>
Use the Zink lowering pass to handle the non-halfz case. Metal, like Vulkan,
uses half-z (and Metal is not configurable, making r/e tricky).
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11084>
Based on the Bifrost standalone compiler, which was based on Midgard's
standalone compiler, which was based on Freedreno's standalone compiler,
which was.....
It's like sour dough!
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10582>
Alyssa Rosenzweig
Alyssa Rosenzweig
Timothy Arceri
Timur Kristóf
Rhys Perry