st/mesa: fix samplerCubeShadow with bias

It has 5 coordinates: (x,y,z,depth,lodbias)

Cc: [email protected]
Reviewed-by: Ilia Mirkin <[email protected]>

1 files changed, 7 insertions, 1 deletions

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index f47cd7d5350..b5736b2a935 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -2820,7 +2820,13 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
       }
       break;
    case ir_txb:
-      opcode = is_cube_array ? TGSI_OPCODE_TXB2 : TGSI_OPCODE_TXB;
+      if (is_cube_array ||
+          sampler_type == glsl_type::samplerCubeShadow_type) {
+         opcode = TGSI_OPCODE_TXB2;
+      }
+      else {
+         opcode = TGSI_OPCODE_TXB;
+      }
       ir->lod_info.bias->accept(this);
       lod_info = this->result;
       if (ir->offset) {