Remove 'pv' parameter from Line/Tri/Point funcs. The provoking vertex

is always the last vertex parameter.
Modify clipping to preserve pv colors.
Modify swrast and X11 driver to expect the pv in the last vertex
(was looking in the first vertex previously).
Remove all handling of flatshading from swrast_setup.

Allow drivers to override the unclipped render tabs in tnl_render_stage
directly.  (Like in 3.4).  Removed fxsimplerender stage.

Modified t_vb_rendertmp.h to remove the need for 'parity' arguments
in RENDER_TRI macros.

5 files changed, 60 insertions, 50 deletions

diff --git a/src/mesa/swrast/s_aalinetemp.h b/src/mesa/swrast/s_aalinetemp.h
index d16fe2c1290..f36c1f433fe 100644
--- a/src/mesa/swrast/s_aalinetemp.h
+++ b/src/mesa/swrast/s_aalinetemp.h
@@ -1,4 +1,4 @@
-/* $Id: s_aalinetemp.h,v 1.3 2001/01/04 15:32:32 brianp Exp $ */
+/* $Id: s_aalinetemp.h,v 1.4 2001/01/05 02:26:48 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -195,10 +195,10 @@ NAME(line)(GLcontext *ctx, const SWvertex *v0, const SWvertex *v1)
                     v0->color[ACOMP], v1->color[ACOMP], line.aPlane);
    }
    else {
-      constant_plane(v0->color[RCOMP], line.rPlane);
-      constant_plane(v0->color[GCOMP], line.gPlane);
-      constant_plane(v0->color[BCOMP], line.bPlane);
-      constant_plane(v0->color[ACOMP], line.aPlane);
+      constant_plane(v1->color[RCOMP], line.rPlane);
+      constant_plane(v1->color[GCOMP], line.gPlane);
+      constant_plane(v1->color[BCOMP], line.bPlane);
+      constant_plane(v1->color[ACOMP], line.aPlane);
    }
 #endif
 #ifdef DO_SPEC
@@ -211,9 +211,9 @@ NAME(line)(GLcontext *ctx, const SWvertex *v0, const SWvertex *v1)
                     v0->specular[BCOMP], v1->specular[BCOMP], line.sbPlane);
    }
    else {
-      constant_plane(v0->specular[RCOMP], line.srPlane);
-      constant_plane(v0->specular[GCOMP], line.sgPlane);
-      constant_plane(v0->specular[BCOMP], line.sbPlane);
+      constant_plane(v1->specular[RCOMP], line.srPlane);
+      constant_plane(v1->specular[GCOMP], line.sgPlane);
+      constant_plane(v1->specular[BCOMP], line.sbPlane);
    }
 #endif
 #ifdef DO_INDEX
@@ -222,7 +222,7 @@ NAME(line)(GLcontext *ctx, const SWvertex *v0, const SWvertex *v1)
                     v0->index, v1->index, line.iPlane);
    }
    else {
-      constant_plane(v0->index, line.iPlane);
+      constant_plane(v1->index, line.iPlane);
    }
 #endif
 #ifdef DO_TEX
diff --git a/src/mesa/swrast/s_aatritemp.h b/src/mesa/swrast/s_aatritemp.h
index 247c7ac85a2..c50680c0070 100644
--- a/src/mesa/swrast/s_aatritemp.h
+++ b/src/mesa/swrast/s_aatritemp.h
@@ -1,4 +1,4 @@
-/* $Id: s_aatritemp.h,v 1.4 2000/11/19 23:10:26 brianp Exp $ */
+/* $Id: s_aatritemp.h,v 1.5 2001/01/05 02:26:49 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -151,10 +151,10 @@
       compute_plane(p0, p1, p2, v0->color[3], v1->color[3], v2->color[3], aPlane);
    }
    else {
-      constant_plane(v0->color[RCOMP], rPlane);
-      constant_plane(v0->color[GCOMP], gPlane);
-      constant_plane(v0->color[BCOMP], bPlane);
-      constant_plane(v0->color[ACOMP], aPlane);
+      constant_plane(v2->color[RCOMP], rPlane);
+      constant_plane(v2->color[GCOMP], gPlane);
+      constant_plane(v2->color[BCOMP], bPlane);
+      constant_plane(v2->color[ACOMP], aPlane);
    }
 #endif
 #ifdef DO_INDEX
@@ -163,15 +163,21 @@
                     v1->index, v2->index, iPlane);
    }
    else {
-      constant_plane(v0->index, iPlane);
+      constant_plane(v2->index, iPlane);
    }
 #endif
 #ifdef DO_SPEC
-   {
+   if (ctx->Light.ShadeModel == GL_SMOOTH) {
       compute_plane(p0, p1, p2, v0->specular[0], v1->specular[0], v2->specular[0],srPlane);
       compute_plane(p0, p1, p2, v0->specular[1], v1->specular[1], v2->specular[1],sgPlane);
       compute_plane(p0, p1, p2, v0->specular[2], v1->specular[2], v2->specular[2],sbPlane);
    }
+   else {
+      /* KW: added this */
+      constant_plane(v2->specular[RCOMP], srPlane);
+      constant_plane(v2->specular[GCOMP], sgPlane);
+      constant_plane(v2->specular[BCOMP], sbPlane);
+   }
 #endif
 #ifdef DO_TEX
    {
diff --git a/src/mesa/swrast/s_feedback.c b/src/mesa/swrast/s_feedback.c
index a635569153d..c63e11d17b3 100644
--- a/src/mesa/swrast/s_feedback.c
+++ b/src/mesa/swrast/s_feedback.c
@@ -1,4 +1,4 @@
-/* $Id: s_feedback.c,v 1.3 2000/11/19 23:10:26 brianp Exp $ */
+/* $Id: s_feedback.c,v 1.4 2001/01/05 02:26:49 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -100,9 +100,9 @@ void gl_feedback_triangle( GLcontext *ctx,
 	 feedback_vertex( ctx, v1, v1 );
 	 feedback_vertex( ctx, v2, v2 );
       } else {
-	 feedback_vertex( ctx, v0, v0 );
-	 feedback_vertex( ctx, v1, v0 );
-	 feedback_vertex( ctx, v2, v0 );
+	 feedback_vertex( ctx, v0, v2 );
+	 feedback_vertex( ctx, v1, v2 );
+	 feedback_vertex( ctx, v2, v2 );
       }
    }
 }
@@ -122,8 +122,8 @@ void gl_feedback_line( GLcontext *ctx, const SWvertex *v0, const SWvertex *v1 )
       feedback_vertex( ctx, v0, v0 );
       feedback_vertex( ctx, v1, v1 );
    } else {
-      feedback_vertex( ctx, v0, v0 );
-      feedback_vertex( ctx, v1, v0 );
+      feedback_vertex( ctx, v0, v1 );
+      feedback_vertex( ctx, v1, v1 );
    }
 
    swrast->StippleCounter++;
diff --git a/src/mesa/swrast/s_triangle.c b/src/mesa/swrast/s_triangle.c
index 6c232cb694c..b61d4401e1b 100644
--- a/src/mesa/swrast/s_triangle.c
+++ b/src/mesa/swrast/s_triangle.c
@@ -1,4 +1,4 @@
-/* $Id: s_triangle.c,v 1.7 2000/12/12 00:31:45 brianp Exp $ */
+/* $Id: s_triangle.c,v 1.8 2001/01/05 02:26:49 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -160,7 +160,7 @@ static void flat_rgba_triangle( GLcontext *ctx,
 		 fffog += fdfogdx;				\
 	      }							\
               gl_write_monocolor_span( ctx, n, LEFT, Y, zspan,	\
-                                       fogspan, v0->color,	\
+                                       fogspan, v2->color,	\
 			               GL_POLYGON );		\
 	   }							\
 	}
@@ -1613,10 +1613,10 @@ static void general_textured_triangle( GLcontext *ctx,
    GLboolean flat_shade = (ctx->Light.ShadeModel==GL_FLAT);	\
    GLint r, g, b, a;						\
    if (flat_shade) {						\
-      r = v0->color[0];						\
-      g = v0->color[1];						\
-      b = v0->color[2];						\
-      a = v0->color[3];						\
+      r = v2->color[0];						\
+      g = v2->color[1];						\
+      b = v2->color[2];						\
+      a = v2->color[3];						\
    }
 #define INNER_LOOP( LEFT, RIGHT, Y )				\
 	{							\
@@ -1708,13 +1708,13 @@ static void general_textured_spec_triangle1( GLcontext *ctx,
    GLboolean flat_shade = (ctx->Light.ShadeModel==GL_FLAT);	\
    GLint r, g, b, a, sr, sg, sb;				\
    if (flat_shade) {						\
-      r = v0->color[0];						\
-      g = v0->color[1];						\
-      b = v0->color[2];						\
-      a = v0->color[3];						\
-      sr = v0->specular[0]; 					\
-      sg = v0->specular[1]; 					\
-      sb = v0->specular[2]; 					\
+      r = v2->color[0];						\
+      g = v2->color[1];						\
+      b = v2->color[2];						\
+      a = v2->color[3];						\
+      sr = v2->specular[0]; 					\
+      sg = v2->specular[1]; 					\
+      sb = v2->specular[2]; 					\
    }
 #define INNER_LOOP( LEFT, RIGHT, Y )				\
 	{							\
@@ -1837,10 +1837,10 @@ static void lambda_textured_triangle1( GLcontext *ctx,
    const GLboolean flat_shade = (ctx->Light.ShadeModel==GL_FLAT);	\
    GLint r, g, b, a;							\
    if (flat_shade) {							\
-      r = v0->color[0];							\
-      g = v0->color[1];							\
-      b = v0->color[2];							\
-      a = v0->color[3];							\
+      r = v2->color[0];							\
+      g = v2->color[1];							\
+      b = v2->color[2];							\
+      a = v2->color[3];							\
    }
 
 #define INNER_LOOP( LEFT, RIGHT, Y )					\
@@ -1942,13 +1942,13 @@ static void lambda_textured_spec_triangle1( GLcontext *ctx,
    const GLboolean flat_shade = (ctx->Light.ShadeModel==GL_FLAT);	\
    GLint r, g, b, a, sr, sg, sb;					\
    if (flat_shade) {							\
-      r = v0->color[0];							\
-      g = v0->color[1];							\
-      b = v0->color[2];							\
-      a = v0->color[3];							\
-      sr = v0->specular[0];						\
-      sg = v0->specular[1];						\
-      sb = v0->specular[2];						\
+      r = v2->color[0];							\
+      g = v2->color[1];							\
+      b = v2->color[2];							\
+      a = v2->color[3];							\
+      sr = v2->specular[0];						\
+      sg = v2->specular[1];						\
+      sb = v2->specular[2];						\
    }
 
 #define INNER_LOOP( LEFT, RIGHT, Y )					\
@@ -2055,10 +2055,10 @@ lambda_multitextured_triangle1( GLcontext *ctx,
    GLfloat twidth[MAX_TEXTURE_UNITS], theight[MAX_TEXTURE_UNITS];		\
    GLint r, g, b, a;								\
    if (flat_shade) {								\
-      r = v0->color[0];								\
-      g = v0->color[1];								\
-      b = v0->color[2];								\
-      a = v0->color[3];								\
+      r = v2->color[0];								\
+      g = v2->color[1];								\
+      b = v2->color[2];								\
+      a = v2->color[3];								\
    }										\
    {										\
       GLuint unit;								\
diff --git a/src/mesa/swrast/swrast.h b/src/mesa/swrast/swrast.h
index d07f30a5ab6..056435ee702 100644
--- a/src/mesa/swrast/swrast.h
+++ b/src/mesa/swrast/swrast.h
@@ -131,6 +131,8 @@ _swrast_ResetLineStipple( GLcontext *ctx );
 
 /* These will always render the correct point/line/triangle for the
  * current state.
+ *
+ * For flatshaded primitives, the provoking vertex is the final one.
  */
 extern void
 _swrast_Point( GLcontext *ctx, const SWvertex *v );
@@ -164,6 +166,8 @@ _swrast_allow_vertex_fog( GLcontext *ctx, GLboolean value );
 extern void
 _swrast_allow_pixel_fog( GLcontext *ctx, GLboolean value );
 
+/* Debug:
+ */
 extern void
 _swrast_print_vertex( GLcontext *ctx, const SWvertex *v );