svga: Fix stencil op mapping

We were inverting the meaning of the stencil op flags: in svga/d3d
the normal incr/decr wraps and the SAT ops clamp.
This fixes piglit failures (at least stencil-twoside and stencil-wrap).
We should backport this everywhere we can.

Reviewed-by: Brian Paul <brianp@vmware.com>
(cherry picked from commit 5d9bfc4d3f117fd6d95e1818c60f4f7ea47e6929)

diff --git a/src/gallium/drivers/svga/svga_pipe_depthstencil.c b/src/gallium/drivers/svga/svga_pipe_depthstencil.c
index c84615a..cb07dbe 100644 (file)
--- a/src/gallium/drivers/svga/svga_pipe_depthstencil.c
+++ b/src/gallium/drivers/svga/svga_pipe_depthstencil.c
@@ -57,10 +57,10 @@ svga_translate_stencil_op(unsigned op)
    case PIPE_STENCIL_OP_KEEP:      return SVGA3D_STENCILOP_KEEP;
    case PIPE_STENCIL_OP_ZERO:      return SVGA3D_STENCILOP_ZERO;
    case PIPE_STENCIL_OP_REPLACE:   return SVGA3D_STENCILOP_REPLACE;
-   case PIPE_STENCIL_OP_INCR:      return SVGA3D_STENCILOP_INCR;
-   case PIPE_STENCIL_OP_DECR:      return SVGA3D_STENCILOP_DECR;
-   case PIPE_STENCIL_OP_INCR_WRAP: return SVGA3D_STENCILOP_INCRSAT; /* incorrect? */
-   case PIPE_STENCIL_OP_DECR_WRAP: return SVGA3D_STENCILOP_DECRSAT; /* incorrect? */
+   case PIPE_STENCIL_OP_INCR:      return SVGA3D_STENCILOP_INCRSAT;
+   case PIPE_STENCIL_OP_DECR:      return SVGA3D_STENCILOP_DECRSAT;
+   case PIPE_STENCIL_OP_INCR_WRAP: return SVGA3D_STENCILOP_INCR;
+   case PIPE_STENCIL_OP_DECR_WRAP: return SVGA3D_STENCILOP_DECR;
    case PIPE_STENCIL_OP_INVERT:    return SVGA3D_STENCILOP_INVERT;
    default:
       assert(0);