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broadcom/compiler: implement nir_intrinsic_load_sample_pos

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This is intended to return the sample location within the pixel.

Fixes:
dEQP-VK.pipeline.multisample_shader_builtin.sample_position.*

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
This commit is contained in:
Iago Toral Quiroga
2020-08-03 11:41:28 +02:00
committed by Marge Bot
parent b7ca46762f
commit 531ea3596d
1 changed files with 7 additions and 0 deletions
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src/broadcom/compiler/nir_to_vir.c
+7
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@@ -2444,6 +2444,13 @@ ntq_emit_intrinsic(struct v3d_compile *c, nir_intrinsic_instr *instr)
ntq_store_dest(c, &instr->dest, 0, vir_SAMPID(c));
break;
case nir_intrinsic_load_sample_pos:
ntq_store_dest(c, &instr->dest, 0,
vir_FSUB(c, vir_FXCD(c), vir_ITOF(c, vir_XCD(c))));
ntq_store_dest(c, &instr->dest, 1,
vir_FSUB(c, vir_FYCD(c), vir_ITOF(c, vir_YCD(c))));
break;
default:
fprintf(stderr, "Unknown intrinsic: ");
nir_print_instr(&instr->instr, stderr);