Mesa (master): i965: add support for polygon mode on Sandybridge.

[Haihao Xiang]

Module: Mesa
Branch: master
Commit: 32e1e591467d9a28c2ac4d2e17af7be2dc429d43
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=32e1e591467d9a28c2ac4d2e17af7be2dc429d43

Author: Xiang, Haihao <haihao.xiang at intel.com>
Date:   Wed Dec  1 16:59:36 2010 +0800

i965: add support for polygon mode on Sandybridge.

This fixes some mesa demos such as fslight/engine in wireframe mode.

---

 src/mesa/drivers/dri/i965/gen6_sf_state.c |   42 +++++++++++++++++++++++++++++
 1 files changed, 42 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/gen6_sf_state.c b/src/mesa/drivers/dri/i965/gen6_sf_state.c
index 471067e..06ac5d4 100644
--- a/src/mesa/drivers/dri/i965/gen6_sf_state.c
+++ b/src/mesa/drivers/dri/i965/gen6_sf_state.c
@@ -99,6 +99,48 @@ upload_sf_state(struct brw_context *brw)
    if (ctx->Polygon.OffsetFill)
        dw2 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_SOLID;
 
+   if (ctx->Polygon.OffsetLine)
+       dw2 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_WIREFRAME;
+
+   if (ctx->Polygon.OffsetPoint)
+       dw2 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_POINT;
+
+   switch (ctx->Polygon.FrontMode) {
+   case GL_FILL:
+       dw2 |= GEN6_SF_FRONT_SOLID;
+       break;
+
+   case GL_LINE:
+       dw2 |= GEN6_SF_FRONT_WIREFRAME;
+       break;
+
+   case GL_POINT:
+       dw2 |= GEN6_SF_FRONT_POINT;
+       break;
+
+   default:
+       assert(0);
+       break;
+   }
+
+   switch (ctx->Polygon.BackMode) {
+   case GL_FILL:
+       dw2 |= GEN6_SF_BACK_SOLID;
+       break;
+
+   case GL_LINE:
+       dw2 |= GEN6_SF_BACK_WIREFRAME;
+       break;
+
+   case GL_POINT:
+       dw2 |= GEN6_SF_BACK_POINT;
+       break;
+
+   default:
+       assert(0);
+       break;
+   }
+
    /* _NEW_SCISSOR */
    if (ctx->Scissor.Enabled)
       dw3 |= GEN6_SF_SCISSOR_ENABLE;