7 files changed, 10 insertions, 20 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_info.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_info.c
index cb6564ad079..3a19fe2a64f 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_info.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_info.c
@@ -241,13 +241,10 @@ analyse_sample(struct analysis_context *ctx,
       tex_info->sampler_unit = inst->Src[2].Register.Index;
 
       if (modifier == LP_BLD_TEX_MODIFIER_EXPLICIT_DERIV ||
+          modifier == LP_BLD_TEX_MODIFIER_EXPLICIT_LOD ||
           modifier == LP_BLD_TEX_MODIFIER_LOD_BIAS || shadow) {
          /* We don't track insts with additional regs, although we could */
          indirect = TRUE;
-      }  else {
-         if (modifier == LP_BLD_TEX_MODIFIER_EXPLICIT_LOD) {
-            readmask |= TGSI_WRITEMASK_W;
-         }
       }
 
       for (chan = 0; chan < 4; ++chan) {
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
index 52a60dd43b6..808e8168824 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
@@ -1428,9 +1428,8 @@ emit_sample(struct lp_build_tgsi_soa_context *bld,
       explicit_lod = NULL;
    }
    else if (modifier == LP_BLD_TEX_MODIFIER_EXPLICIT_LOD) {
-      /* lod bias comes from src 3.r but explicit lod from 0.a */
       lod_bias = NULL;
-      explicit_lod = lp_build_emit_fetch( &bld->bld_base, inst, 0, 3 );
+      explicit_lod = lp_build_emit_fetch( &bld->bld_base, inst, 3, 0 );
    }
    else if (modifier == LP_BLD_TEX_MODIFIER_LOD_ZERO) {
       lod_bias = NULL;
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index 6da7d42455c..03f19420986 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -2154,7 +2154,7 @@ exec_sample(struct tgsi_exec_machine *mach,
          control = tgsi_sampler_lod_bias;
       }
       else if (modifier == TEX_MODIFIER_EXPLICIT_LOD) {
-         FETCH(&c1, 0, TGSI_CHAN_W);
+         FETCH(&c1, 3, TGSI_CHAN_X);
          lod = &c1;
          control = tgsi_sampler_lod_explicit;
       }
diff --git a/src/gallium/auxiliary/tgsi/tgsi_info.c b/src/gallium/auxiliary/tgsi/tgsi_info.c
index f8a3cb665f9..f289ebcda5a 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_info.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_info.c
@@ -190,7 +190,7 @@ static const struct tgsi_opcode_info opcode_info[TGSI_OPCODE_LAST] =
    { 1, 4, 0, 0, 0, 0, OTHR, "SAMPLE_C",    TGSI_OPCODE_SAMPLE_C },
    { 1, 4, 0, 0, 0, 0, OTHR, "SAMPLE_C_LZ", TGSI_OPCODE_SAMPLE_C_LZ },
    { 1, 5, 0, 0, 0, 0, OTHR, "SAMPLE_D",    TGSI_OPCODE_SAMPLE_D },
-   { 1, 3, 0, 0, 0, 0, OTHR, "SAMPLE_L",    TGSI_OPCODE_SAMPLE_L },
+   { 1, 4, 0, 0, 0, 0, OTHR, "SAMPLE_L",    TGSI_OPCODE_SAMPLE_L },
    { 1, 3, 0, 0, 0, 0, OTHR, "GATHER4",     TGSI_OPCODE_GATHER4 },
    { 1, 2, 0, 0, 0, 0, OTHR, "SVIEWINFO",   TGSI_OPCODE_SVIEWINFO },
    { 1, 2, 0, 0, 0, 0, OTHR, "SAMPLE_POS",  TGSI_OPCODE_SAMPLE_POS },
diff --git a/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h b/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h
index 75e27a666f1..4a1b811b30b 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h
@@ -176,7 +176,7 @@ OP14(SAMPLE_B)
 OP14(SAMPLE_C)
 OP14(SAMPLE_C_LZ)
 OP15(SAMPLE_D)
-OP13(SAMPLE_L)
+OP14(SAMPLE_L)
 OP13(GATHER4)
 OP12(SVIEWINFO)
 OP13(SAMPLE_POS)
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index 31b679621da..f13dd8fdffa 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -1423,11 +1423,10 @@ instructions. If in doubt double check Direct3D documentation.
 
 .. opcode:: SAMPLE_L - SAMPLE_L is identical to the SAMPLE opcode except
                that the LOD is provided directly as a scalar value,
-               representing no anisotropy. Source addresses A channel
-               is used as the LOD.
-               SAMPLE_L dst, address, sampler_view, sampler
+               representing no anisotropy.
+               SAMPLE_L dst, address, sampler_view, sampler, explicit_lod
                e.g.
-               SAMPLE_L TEMP[0], TEMP[1], SVIEW[0], SAMP[0]
+               SAMPLE_L TEMP[0], TEMP[1], SVIEW[0], SAMP[0], TEMP[2].x
 
 .. opcode:: GATHER4 - Gathers the four texels to be used in a bi-linear
                filtering operation and packs them into a single register.
diff --git a/src/gallium/state_trackers/d3d1x/gd3d1x/sm4_to_tgsi.cpp b/src/gallium/state_trackers/d3d1x/gd3d1x/sm4_to_tgsi.cpp
index aaa46f19e8c..ed1f8dac948 100644
--- a/src/gallium/state_trackers/d3d1x/gd3d1x/sm4_to_tgsi.cpp
+++ b/src/gallium/state_trackers/d3d1x/gd3d1x/sm4_to_tgsi.cpp
@@ -470,14 +470,9 @@ struct sm4_to_tgsi_converter
 			case SM4_OPCODE_SAMPLE_D: // dst, coord, res, samp, ddx, ddy
 				ureg_SAMPLE_D(ureg, _dst(), _src(1), resources[_idx(SM4_FILE_RESOURCE, 2)], samplers[_idx(SM4_FILE_SAMPLER, 3)], _src(4), _src(5));
 				break;
-			case SM4_OPCODE_SAMPLE_L: // dst, coord, res, samp, bias.x
-			{
-				struct ureg_dst tmp = _tmp();
-				ureg_MOV(ureg, ureg_writemask(tmp, TGSI_WRITEMASK_XYZ), _src(1));
-				ureg_MOV(ureg, ureg_writemask(tmp, TGSI_WRITEMASK_W), ureg_swizzle(_src(4), 0, 0, 0, 0));
-				ureg_SAMPLE_L(ureg, _dst(), ureg_src(tmp), resources[_idx(SM4_FILE_RESOURCE, 2)], samplers[_idx(SM4_FILE_SAMPLER, 3)]);
+			case SM4_OPCODE_SAMPLE_L: // dst, coord, res, samp, lod.x
+				ureg_SAMPLE_L(ureg, _dst(), _src(1), resources[_idx(SM4_FILE_RESOURCE, 2)], samplers[_idx(SM4_FILE_SAMPLER, 3)], _src(4));
 				break;
-			}
 			default:
 				ok = false;
 				break;