tgsi: fix wrong reg used for unit for TGSI_OPCODE_TXF

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index 6a74ef3..9945d42 100644 (file)
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -2139,9 +2139,9 @@ exec_txd(struct tgsi_exec_machine *mach,
 
 static void
 exec_txf(struct tgsi_exec_machine *mach,
-        const struct tgsi_full_instruction *inst)
+         const struct tgsi_full_instruction *inst)
 {
-   const uint unit = inst->Src[2].Register.Index;
+   const uint unit = inst->Src[1].Register.Index;
    union tgsi_exec_channel r[4];
    uint chan;
    float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE];