freedreno/ir3: get the # of miplevels from getinfo

This fixes ARB_texture_query_levels to actually return the desired
value.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Rob Clark <robclark@freedesktop.org>
Cc: "10.4 10.5" <mesa-stable@lists.freedesktop.org>

diff --git a/src/gallium/drivers/freedreno/ir3/ir3_compiler.c b/src/gallium/drivers/freedreno/ir3/ir3_compiler.c
index a0075190fb574df3f8579e8615cda17cc6b7e1d6..8ffa37cf34f1622a9484fa29e37f9b464f9524b9 100644 (file)
--- a/src/gallium/drivers/freedreno/ir3/ir3_compiler.c
+++ b/src/gallium/drivers/freedreno/ir3/ir3_compiler.c
@@ -1696,6 +1696,26 @@ trans_txq(const struct instr_translater *t,
                add_dst_reg_wrmask(ctx, instr, dst, 0, dst->WriteMask);
                add_src_reg_wrmask(ctx, instr, level, level->SwizzleX, 0x1);
        }
+
+       if (dst->WriteMask & TGSI_WRITEMASK_W) {
+               /* The # of levels comes from getinfo.z. We need to add 1 to it, since
+                * the value in TEX_CONST_0 is zero-based.
+                */
+               struct tgsi_dst_register tmp_dst;
+               struct tgsi_src_register *tmp_src;
+
+               tmp_src = get_internal_temp(ctx, &tmp_dst);
+               instr = instr_create(ctx, 5, OPC_GETINFO);
+               instr->cat5.type = get_utype(ctx);
+               instr->cat5.samp = samp->Index;
+               instr->cat5.tex  = samp->Index;
+               add_dst_reg_wrmask(ctx, instr, &tmp_dst, 0, TGSI_WRITEMASK_Z);
+
+               instr = instr_create(ctx, 2, OPC_ADD_U);
+               add_dst_reg(ctx, instr, dst, 3);
+               add_src_reg(ctx, instr, tmp_src, src_swiz(tmp_src, 2));
+               ir3_reg_create(instr, 0, IR3_REG_IMMED)->iim_val = 1;
+       }
 }
 
 /* DDX/DDY */