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gallium/ntt: Add support for emitting TXF_LZ.

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Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8373>
This commit is contained in:
Eric Anholt
2020-12-11 13:40:31 -08:00
committed by Marge Bot
parent c6d3fd8c21
commit 4538ebb8f9
1 changed files with 14 additions and 2 deletions
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src/gallium/auxiliary/nir/nir_to_tgsi.c
+14 -2
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@@ -42,6 +42,7 @@ struct ntt_compile {
bool needs_texcoord_semantic;
bool any_reg_as_address;
bool native_integers;
bool has_txf_lz;
int next_addr_reg;
bool addr_declared[2];
@@ -1780,8 +1781,16 @@ ntt_emit_texture(struct ntt_compile *c, nir_tex_instr *instr)
break;
case nir_texop_txf:
case nir_texop_txf_ms:
/* XXX: Support txf_lz */
tex_opcode = TGSI_OPCODE_TXF;
if (c->has_txf_lz) {
int lod_src = nir_tex_instr_src_index(instr, nir_tex_src_lod);
if (lod_src >= 0 &&
nir_src_is_const(instr->src[lod_src].src) &&
nir_src_as_uint(instr->src[lod_src].src) == 0) {
tex_opcode = TGSI_OPCODE_TXF_LZ;
}
}
break;
case nir_texop_txl:
tex_opcode = TGSI_OPCODE_TXL;
@@ -1820,7 +1829,8 @@ ntt_emit_texture(struct ntt_compile *c, nir_tex_instr *instr)
s.chan = MAX2(s.chan, 3);
ntt_push_tex_arg(c, instr, nir_tex_src_bias, &s);
ntt_push_tex_arg(c, instr, nir_tex_src_lod, &s);
if (tex_opcode != TGSI_OPCODE_TXF_LZ)
ntt_push_tex_arg(c, instr, nir_tex_src_lod, &s);
/* End of packed src setup, everything that follows gets its own operand. */
if (s.chan)
@@ -2633,6 +2643,8 @@ nir_to_tgsi(struct nir_shader *s,
screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
c->any_reg_as_address =
screen->get_param(screen, PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS);
c->has_txf_lz =
screen->get_param(screen, PIPE_CAP_TGSI_TEX_TXF_LZ);
c->s = s;
c->native_integers = native_integers;