glsl: add support for ARB_texture_multisample

V2: - emit `sample` parameter properly for multisample texelFetch()
    - fix spurious whitespace change
    - introduce a new opcode ir_txf_ms rather than overloading the
      existing ir_txf further. This makes doing the right thing in
      the driver somewhat simpler.

V3: - fix weird whitespace

V4: - don't forget to include the new opcode in tex_opcode_strs[]
      (thanks Kenneth for spotting this)

Signed-off-by: Chris Forbes <[email protected]>
[V2] Reviewed-by: Eric Anholt <[email protected]>
[V2] Reviewed-by: Paul Berry <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/glsl/ir_print_visitor.cpp b/src/glsl/ir_print_visitor.cpp
index acc92dbf165..3bdea9bbcbc 100644
--- a/src/glsl/ir_print_visitor.cpp
+++ b/src/glsl/ir_print_visitor.cpp
@@ -260,7 +260,7 @@ void ir_print_visitor::visit(ir_texture *ir)
       printf(" ");
    }
 
-   if (ir->op != ir_txf && ir->op != ir_txs) {
+   if (ir->op != ir_txf && ir->op != ir_txf_ms && ir->op != ir_txs) {
       if (ir->projector)
 	 ir->projector->accept(this);
       else
@@ -287,6 +287,9 @@ void ir_print_visitor::visit(ir_texture *ir)
    case ir_txs:
       ir->lod_info.lod->accept(this);
       break;
+   case ir_txf_ms:
+      ir->lod_info.sample_index->accept(this);
+      break;
    case ir_txd:
       printf("(");
       ir->lod_info.grad.dPdx->accept(this);