Mesa (master): nvc0: disable tessellation on maxwell

[Ilia Mirkin]

Module: Mesa
Branch: master
Commit: d3e23f1ff915c01541f8df375b50b93b3da565a8
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d3e23f1ff915c01541f8df375b50b93b3da565a8

Author: Ilia Mirkin <imirkin at alum.mit.edu>
Date:   Fri Aug 14 15:58:28 2015 -0400

nvc0: disable tessellation on maxwell

The address calculations are all different (e.g. see GP), there appear
to be sync's in programs, and probably a bunch of other differences.
Just disable it for now.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>

---

 src/gallium/drivers/nouveau/nvc0/nvc0_screen.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
index c211e99..ab19b26 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -232,11 +232,14 @@ nvc0_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader,
 
    switch (shader) {
    case PIPE_SHADER_VERTEX:
-   case PIPE_SHADER_TESS_CTRL:
-   case PIPE_SHADER_TESS_EVAL:
    case PIPE_SHADER_GEOMETRY:
    case PIPE_SHADER_FRAGMENT:
       break;
+   case PIPE_SHADER_TESS_CTRL:
+   case PIPE_SHADER_TESS_EVAL:
+      if (class_3d >= GM107_3D_CLASS)
+         return 0;
+      break;
    case PIPE_SHADER_COMPUTE:
       if (class_3d != NVE4_3D_CLASS)
          return 0;