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agx: Implement nir_intrinsic_load_frag_coord

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Depends on matching ABI.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11718>
This commit is contained in:
Alyssa Rosenzweig
2021-06-06 14:03:54 -04:00
committed by Marge Bot
parent 8457524238
commit 3eab648d6b
1 changed files with 22 additions and 0 deletions
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22
src/asahi/compiler/agx_compile.c
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@@ -263,6 +263,25 @@ agx_emit_load_ubo(agx_builder *b, nir_intrinsic_instr *instr)
return agx_wait(b, 0);
}
static agx_instr *
agx_emit_load_frag_coord(agx_builder *b, nir_intrinsic_instr *instr)
{
agx_index xy[2];
for (unsigned i = 0; i < 2; ++i) {
xy[i] = agx_fadd(b, agx_convert(b, agx_immediate(AGX_CONVERT_U32_TO_F),
agx_get_sr(b, 32, AGX_SR_THREAD_POSITION_IN_GRID_X + i),
AGX_ROUND_RTE), agx_immediate_f(0.5f));
}
/* Ordering by the ABI */
agx_index z = agx_ld_vary(b, agx_immediate(1), 1, false);
agx_index w = agx_ld_vary(b, agx_immediate(0), 1, false);
return agx_p_combine_to(b, agx_dest_index(&instr->dest),
xy[0], xy[1], z, w);
}
static agx_instr *
agx_blend_const(agx_builder *b, agx_index dst, unsigned comp)
{
@@ -312,6 +331,9 @@ agx_emit_intrinsic(agx_builder *b, nir_intrinsic_instr *instr)
case nir_intrinsic_load_kernel_input:
return agx_emit_load_ubo(b, instr);
case nir_intrinsic_load_frag_coord:
return agx_emit_load_frag_coord(b, instr);
case nir_intrinsic_load_back_face_agx:
return agx_get_sr_to(b, dst, AGX_SR_BACKFACING);