From c5098789718f652a4853e96fc7d46fc208f0d283 Mon Sep 17 00:00:00 2001 From: Alyssa Rosenzweig Date: Sat, 5 Jun 2021 15:05:37 -0400 Subject: [PATCH] nir: Add nir_intrinsic_load_back_face_agx On AGX, the special register for front facing is inverted from its meaning in APIs. We need to lower load_front_face to inot(load_back_face). Doing this in the backend is trivial, but then we would miss out on algebraic optimizations for the inot. Signed-off-by: Alyssa Rosenzweig Acked-by: Jason Ekstrand Part-of: --- src/compiler/nir/nir_intrinsics.py | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/compiler/nir/nir_intrinsics.py b/src/compiler/nir/nir_intrinsics.py index 072a366c786..18d24b90a9e 100644 --- a/src/compiler/nir/nir_intrinsics.py +++ b/src/compiler/nir/nir_intrinsics.py @@ -1183,6 +1183,9 @@ store("tlb_sample_color_v3d", [1], [BASE, COMPONENT, SRC_TYPE], []) # the target framebuffer intrinsic("load_fb_layers_v3d", dest_comp=1, flags=[CAN_ELIMINATE, CAN_REORDER]) +# Logical complement of load_front_face, mapping to an AGX system value +system_value("back_face_agx", 1, bit_sizes=[1, 32]) + # Intel-specific query for loading from the brw_image_param struct passed # into the shader as a uniform. The variable is a deref to the image # variable. The const index specifies which of the six parameters to load.