From 121b82f6387c267731a18f3cb9762cedf99ebb6d Mon Sep 17 00:00:00 2001 From: Neil Roberts Date: Mon, 22 Jun 2020 09:49:33 +0200 Subject: [PATCH] nir: Add intrinsics for the line width The first intrinsic is intended to expose the value set by glLineWidth to shaders internally. The second intrinsic exposes the value actually sent to the hardware. This may be wider than the first one in order to implement anti-aliasing. These will be used in later patches to implement a line smoothing lowering pass. v2: Add a second intrinsic for the expanded line width for anti-aliasing. Reviewed-by: Eric Anholt Part-of: --- src/compiler/nir/nir_intrinsics.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/compiler/nir/nir_intrinsics.py b/src/compiler/nir/nir_intrinsics.py index db5de370187..d59926a2901 100644 --- a/src/compiler/nir/nir_intrinsics.py +++ b/src/compiler/nir/nir_intrinsics.py @@ -606,6 +606,8 @@ system_value("local_group_size", 3) system_value("global_invocation_id", 3, bit_sizes=[32, 64]) system_value("global_invocation_index", 1, bit_sizes=[32, 64]) system_value("work_dim", 1) +system_value("line_width", 1) +system_value("aa_line_width", 1) # Driver-specific viewport scale/offset parameters. # # VC4 and V3D need to emit a scaled version of the position in the vertex -- 2.30.2