diff options
Diffstat (limited to 'src/mesa/swrast/s_context.c')
| -rw-r--r-- | src/mesa/swrast/s_context.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/mesa/swrast/s_context.c b/src/mesa/swrast/s_context.c index 39569256514..3bf9804befc 100644 --- a/src/mesa/swrast/s_context.c +++ b/src/mesa/swrast/s_context.c @@ -117,8 +117,8 @@ _swrast_update_rasterflags( GLcontext *ctx ) /** - * Examine polycon culls tate to compute the _BackfaceSign field. - * _BackfaceSign will be 0 if no culling, -1 if culling back-faces, + * Examine polycon culls tate to compute the _BackfaceCullSign field. + * _BackfaceCullSign will be 0 if no culling, -1 if culling back-faces, * and 1 if culling front-faces. The Polygon FrontFace state also * factors in. */ @@ -149,10 +149,15 @@ _swrast_update_polygon( GLcontext *ctx ) backface_sign = 0.0; } - SWRAST_CONTEXT(ctx)->_BackfaceSign = backface_sign; + SWRAST_CONTEXT(ctx)->_BackfaceCullSign = backface_sign; + + /* This is for front/back-face determination, but not for culling */ + SWRAST_CONTEXT(ctx)->_BackfaceSign + = (ctx->Polygon.FrontFace == GL_CW) ? -1.0 : 1.0; } + /** * Update the _PreferPixelFog field to indicate if we need to compute * fog blend factors (from the fog coords) per-fragment. @@ -764,6 +769,12 @@ _swrast_ResetLineStipple( GLcontext *ctx ) } void +_swrast_SetFacing(GLcontext *ctx, GLuint facing) +{ + SWRAST_CONTEXT(ctx)->PointLineFacing = facing; +} + +void _swrast_allow_vertex_fog( GLcontext *ctx, GLboolean value ) { if (SWRAST_DEBUG) { |