Overhaul of line drawing template code. Make better use of sw_span mechanism.

4 files changed, 412 insertions, 1371 deletions

diff --git a/src/mesa/drivers/osmesa/osmesa.c b/src/mesa/drivers/osmesa/osmesa.c
index 2699890186a..09d52073ed7 100644
--- a/src/mesa/drivers/osmesa/osmesa.c
+++ b/src/mesa/drivers/osmesa/osmesa.c
@@ -1,8 +1,8 @@
-/* $Id: osmesa.c,v 1.97 2002/11/13 16:57:44 brianp Exp $ */
+/* $Id: osmesa.c,v 1.98 2002/11/14 03:48:03 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  5.0
+ * Version:  5.1
  *
  * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
@@ -393,14 +393,12 @@ do {									\
 /*
  * Draw a flat-shaded, RGB line into an osmesa buffer.
  */
-static void
-flat_rgba_line( GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1 )
-{
-   const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define NAME flat_rgba_line
+#define CLIP_HACK 1
+#define SETUP_CODE						\
+   const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);		\
    const GLchan *color = vert1->color;
 
-#define INTERP_XY 1
-#define CLIP_HACK 1
 #define PLOT(X, Y)						\
 do {								\
    GLchan *p = PIXELADDR4(X, Y);				\
@@ -412,22 +410,20 @@ do {								\
 #else
 #include "swrast/s_linetemp.h"
 #endif
-}
+
 
 
 /*
  * Draw a flat-shaded, Z-less, RGB line into an osmesa buffer.
  */
-static void
-flat_rgba_z_line(GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1)
-{
-   const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
-   const GLchan *color = vert1->color;
-
-#define INTERP_XY 1
+#define NAME flat_rgba_z_line
+#define CLIP_HACK 1
 #define INTERP_Z 1
 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define CLIP_HACK 1
+#define SETUP_CODE					\
+   const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);	\
+   const GLchan *color = vert1->color;
+
 #define PLOT(X, Y)					\
 do {							\
    if (Z < *zPtr) {					\
@@ -438,167 +434,13 @@ do {							\
    }							\
 } while (0)
 
-
 #ifdef WIN32
 #include "..\swrast\s_linetemp.h"
 #else
 #include "swrast/s_linetemp.h"
 #endif
-}
 
 
-/*
- * Draw a flat-shaded, alpha-blended, RGB line into an osmesa buffer.
- * XXX update for GLchan
- */
-static void
-flat_blend_rgba_line( GLcontext *ctx,
-                      const SWvertex *vert0, const SWvertex *vert1 )
-{
-   const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
-   const GLint rshift = osmesa->rshift;
-   const GLint gshift = osmesa->gshift;
-   const GLint bshift = osmesa->bshift;
-   const GLint avalue = vert0->color[3];
-   const GLint msavalue = CHAN_MAX - avalue;
-   const GLint rvalue = vert1->color[0]*avalue;
-   const GLint gvalue = vert1->color[1]*avalue;
-   const GLint bvalue = vert1->color[2]*avalue;
-
-#define INTERP_XY 1
-#define CLIP_HACK 1
-#define PLOT(X,Y)					\
-   { GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y);	\
-     GLuint  pixel = 0;					\
-     pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift);\
-     pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift);\
-     pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift);\
-     *ptr4 = pixel;					\
-   }
-
-#if 0  /* XXX use this in the future */
-#define PLOT(X,Y)							\
-   {									\
-      GLchan *pixel = (GLchan *) PIXELADDR4(X, Y);			\
-      pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS;	\
-      pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS;	\
-      pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS;	\
-      pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS;	\
-   }
-#endif
-
-#ifdef WIN32
-#include "..\swrast\s_linetemp.h"
-#else
-#include "swrast/s_linetemp.h"
-#endif
-}
-
-
-/*
- * Draw a flat-shaded, Z-less, alpha-blended, RGB line into an osmesa buffer.
- * But don't write to Z buffer.
- * XXX update for GLchan
- */
-static void
-flat_blend_rgba_z_line( GLcontext *ctx,
-                        const SWvertex *vert0, const SWvertex *vert1 )
-{
-   const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
-   const GLint rshift = osmesa->rshift;
-   const GLint gshift = osmesa->gshift;
-   const GLint bshift = osmesa->bshift;
-   const GLint avalue = vert0->color[3];
-   const GLint msavalue = 256 - avalue;
-   const GLint rvalue = vert1->color[0]*avalue;
-   const GLint gvalue = vert1->color[1]*avalue;
-   const GLint bvalue = vert1->color[2]*avalue;
-
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define CLIP_HACK 1
-#define PLOT(X,Y)							\
-	if (Z < *zPtr) {						\
-	   GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y);			\
-	   GLuint  pixel = 0;						\
-	   pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift);	\
-	   pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift);	\
-	   pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift);	\
-	   *ptr4 = pixel; 						\
-	}
-
-#if 0  /* XXX use this in the future */
-#define PLOT(X,Y)							\
-   if (Z < *zPtr) {							\
-      GLchan *pixel = (GLchan *) PIXELADDR4(X, Y);			\
-      pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS;	\
-      pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS;	\
-      pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS;	\
-      pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS;	\
-   }
-#endif
-
-#ifdef WIN32
-#include "..\swrast\s_linetemp.h"
-#else
-#include "swrast/s_linetemp.h"
-#endif
-}
-
-
-/*
- * Draw a flat-shaded, Z-less, alpha-blended, RGB line into an osmesa buffer.
- * XXX update for GLchan
- */
-static void
-flat_blend_rgba_z_line_write( GLcontext *ctx,
-                              const SWvertex *vert0, const SWvertex *vert1 )
-{
-   const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
-   const GLint rshift = osmesa->rshift;
-   const GLint gshift = osmesa->gshift;
-   const GLint bshift = osmesa->bshift;
-   const GLint avalue = vert0->color[3];
-   const GLint msavalue = 256 - avalue;
-   const GLint rvalue = vert1->color[0]*avalue;
-   const GLint gvalue = vert1->color[1]*avalue;
-   const GLint bvalue = vert1->color[2]*avalue;
-
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define CLIP_HACK 1
-#define PLOT(X,Y)							\
-	if (Z < *zPtr) {						\
-	   GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y);			\
-	   GLuint  pixel = 0;						\
-	   pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift);	\
-	   pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift);	\
-	   pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift);	\
-	   *ptr4 = pixel;						\
-	   *zPtr = Z;							\
-	}
-
-#if 0  /* XXX use this in the future */
-#define PLOT(X,Y)							\
-   if (Z < *zPtr) {							\
-      GLchan *pixel = (GLchan *) PIXELADDR4(X, Y);			\
-      pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS;	\
-      pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS;	\
-      pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS;	\
-      pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS;	\
-      *zPtr = Z;							\
-   }
-#endif
-
-#ifdef WIN32
-#include "..\swrast\s_linetemp.h"
-#else
-#include "swrast/s_linetemp.h"
-#endif
-}
-
 
 /*
  * Analyze context state to see if we can provide a fast line drawing
@@ -633,39 +475,6 @@ osmesa_choose_line_function( GLcontext *ctx )
       return (swrast_line_func) flat_rgba_line;
    }
 
-   if (swrast->_RasterMask==(DEPTH_BIT|BLEND_BIT)
-       && ctx->Depth.Func==GL_LESS
-       && ctx->Depth.Mask==GL_TRUE
-       && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS
-       && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA
-       && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA
-       && ctx->Color.BlendSrcA==GL_SRC_ALPHA
-       && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA
-       && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) {
-      return (swrast_line_func) flat_blend_rgba_z_line_write;
-   }
-
-   if (swrast->_RasterMask==(DEPTH_BIT|BLEND_BIT)
-       && ctx->Depth.Func==GL_LESS
-       && ctx->Depth.Mask==GL_FALSE
-       && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS
-       && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA
-       && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA
-       && ctx->Color.BlendSrcA==GL_SRC_ALPHA
-       && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA
-       && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) {
-      return (swrast_line_func) flat_blend_rgba_z_line;
-   }
-
-   if (swrast->_RasterMask==BLEND_BIT
-       && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA
-       && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA
-       && ctx->Color.BlendSrcA==GL_SRC_ALPHA
-       && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA
-       && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) {
-      return (swrast_line_func) flat_blend_rgba_line;
-   }
-
    return (swrast_line_func) NULL;
 }
 
diff --git a/src/mesa/drivers/x11/xm_line.c b/src/mesa/drivers/x11/xm_line.c
index 989969d024d..55cc5c7790b 100644
--- a/src/mesa/drivers/x11/xm_line.c
+++ b/src/mesa/drivers/x11/xm_line.c
@@ -1,10 +1,10 @@
-/* $Id: xm_line.c,v 1.20 2002/06/15 03:03:10 brianp Exp $ */
+/* $Id: xm_line.c,v 1.21 2002/11/14 03:48:03 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  5.1
  *
- * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -123,73 +123,60 @@ void xmesa_choose_point( GLcontext *ctx )
 /*
  * Draw a flat-shaded, PF_TRUECOLOR line into an XImage.
  */
-static void flat_TRUECOLOR_line( GLcontext *ctx,
-                                 const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
-   XMesaImage *img = xmesa->xm_buffer->backimage;
-   unsigned long pixel;
+#define NAME flat_TRUECOLOR_line
+#define SETUP_CODE					\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;	\
+   const GLubyte *color = vert1->color;			\
+   XMesaImage *img = xmesa->xm_buffer->backimage;	\
+   unsigned long pixel;					\
    PACK_TRUECOLOR( pixel, color[0], color[1], color[2] );
-
-#define INTERP_XY 1
 #define CLIP_HACK 1
 #define PLOT(X,Y) XMesaPutPixel( img, X, FLIP(xmesa->xm_buffer, Y), pixel );
-
 #include "swrast/s_linetemp.h"
-}
 
 
 
 /*
  * Draw a flat-shaded, PF_8A8B8G8R line into an XImage.
  */
-static void flat_8A8B8G8R_line( GLcontext *ctx,
-                                const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
+#define NAME flat_8A8B8G8R_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
    GLuint pixel = PACK_8B8G8R( color[0], color[1], color[2] );
-
 #define PIXEL_TYPE GLuint
 #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
 #define PIXEL_ADDRESS(X,Y) PIXELADDR4(xmesa->xm_buffer,X,Y)
 #define CLIP_HACK 1
 #define PLOT(X,Y) *pixelPtr = pixel;
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, PF_8R8G8B line into an XImage.
  */
-static void flat_8R8G8B_line( GLcontext *ctx,
-                              const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
+#define NAME flat_8R8G8B_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
    GLuint pixel = PACK_8R8G8B( color[0], color[1], color[2] );
-
 #define PIXEL_TYPE GLuint
 #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
 #define PIXEL_ADDRESS(X,Y) PIXELADDR4(xmesa->xm_buffer,X,Y)
 #define CLIP_HACK 1
 #define PLOT(X,Y) *pixelPtr = pixel;
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, PF_8R8G8B24 line into an XImage.
  */
-static void flat_8R8G8B24_line( GLcontext *ctx,
-                              const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
+#define NAME flat_8R8G8B24_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
    const GLubyte *color = vert1->color;
-
 #define PIXEL_TYPE bgr_t
 #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
 #define PIXEL_ADDRESS(X,Y) PIXELADDR3(xmesa->xm_buffer,X,Y)
@@ -199,130 +186,109 @@ static void flat_8R8G8B24_line( GLcontext *ctx,
       pixelPtr->g = color[GCOMP];	\
       pixelPtr->b = color[BCOMP];	\
 }
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, PF_5R6G5B line into an XImage.
  */
-static void flat_5R6G5B_line( GLcontext *ctx,
-                              const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
+#define NAME flat_5R6G5B_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
    GLushort pixel = PACK_5R6G5B( color[0], color[1], color[2] );
-
 #define PIXEL_TYPE GLushort
 #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
 #define PIXEL_ADDRESS(X,Y) PIXELADDR2(xmesa->xm_buffer,X,Y)
 #define CLIP_HACK 1
 #define PLOT(X,Y) *pixelPtr = pixel;
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, PF_DITHER_5R6G5B line into an XImage.
  */
-static void flat_DITHER_5R6G5B_line( GLcontext *ctx,
-                                     const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
+#define NAME flat_DITHER_5R6G5B_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
    const GLubyte *color = vert1->color;
-
 #define PIXEL_TYPE GLushort
 #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
 #define PIXEL_ADDRESS(X,Y) PIXELADDR2(xmesa->xm_buffer,X,Y)
 #define CLIP_HACK 1
 #define PLOT(X,Y) PACK_TRUEDITHER( *pixelPtr, X, Y, color[0], color[1], color[2] );
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 
 /*
  * Draw a flat-shaded, PF_DITHER 8-bit line into an XImage.
  */
-static void flat_DITHER8_line( GLcontext *ctx,
-                               const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
-   GLint r = color[0], g = color[1], b = color[2];
+#define NAME flat_DITHER8_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
+   GLint r = color[0], g = color[1], b = color[2];		\
    DITHER_SETUP;
-
-#define INTERP_XY 1
 #define PIXEL_TYPE GLubyte
 #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
 #define PIXEL_ADDRESS(X,Y) PIXELADDR1(xmesa->xm_buffer,X,Y)
 #define CLIP_HACK 1
 #define PLOT(X,Y) *pixelPtr = DITHER(X,Y,r,g,b);
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, PF_LOOKUP 8-bit line into an XImage.
  */
-static void flat_LOOKUP8_line( GLcontext *ctx,
-                               const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
-   GLubyte pixel;
-   LOOKUP_SETUP;
+#define NAME flat_LOOKUP8_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
+   GLubyte pixel;						\
+   LOOKUP_SETUP;						\
    pixel = (GLubyte) LOOKUP( color[0], color[1], color[2] );
-
 #define PIXEL_TYPE GLubyte
 #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
 #define PIXEL_ADDRESS(X,Y) PIXELADDR1(xmesa->xm_buffer,X,Y)
 #define CLIP_HACK 1
 #define PLOT(X,Y) *pixelPtr = pixel;
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, PF_HPCR line into an XImage.
  */
-static void flat_HPCR_line( GLcontext *ctx,
-                            const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
+#define NAME flat_HPCR_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
    GLint r = color[0], g = color[1], b = color[2];
-
-#define INTERP_XY 1
 #define PIXEL_TYPE GLubyte
 #define BYTES_PER_ROW (xmesa->xm_buffer->backimage->bytes_per_line)
 #define PIXEL_ADDRESS(X,Y) PIXELADDR1(xmesa->xm_buffer,X,Y)
 #define CLIP_HACK 1
 #define PLOT(X,Y) *pixelPtr = (GLubyte) DITHER_HPCR(X,Y,r,g,b);
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 
 /*
  * Draw a flat-shaded, Z-less, PF_TRUECOLOR line into an XImage.
  */
-static void flat_TRUECOLOR_z_line( GLcontext *ctx,
-                                   const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
-   XMesaImage *img = xmesa->xm_buffer->backimage;
-   unsigned long pixel;
+#define NAME flat_TRUECOLOR_z_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
+   XMesaImage *img = xmesa->xm_buffer->backimage;		\
+   unsigned long pixel;						\
    PACK_TRUECOLOR( pixel, color[0], color[1], color[2] );
-
-#define INTERP_XY 1
 #define INTERP_Z 1
 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
 #define CLIP_HACK 1
@@ -331,21 +297,18 @@ static void flat_TRUECOLOR_z_line( GLcontext *ctx,
 	   *zPtr = Z;							\
            XMesaPutPixel( img, X, FLIP(xmesa->xm_buffer, Y), pixel );	\
 	}
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, Z-less, PF_8A8B8G8R line into an XImage.
  */
-static void flat_8A8B8G8R_z_line( GLcontext *ctx,
-                                  const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
+#define NAME flat_8A8B8G8R_z_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
    GLuint pixel = PACK_8B8G8R( color[0], color[1], color[2] );
-
 #define INTERP_Z 1
 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
 #define PIXEL_TYPE GLuint
@@ -357,21 +320,18 @@ static void flat_8A8B8G8R_z_line( GLcontext *ctx,
 	   *zPtr = Z;		\
 	   *pixelPtr = pixel;	\
 	}
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, Z-less, PF_8R8G8B line into an XImage.
  */
-static void flat_8R8G8B_z_line( GLcontext *ctx,
-                                const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
+#define NAME flat_8R8G8B_z_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
    GLuint pixel = PACK_8R8G8B( color[0], color[1], color[2] );
-
 #define INTERP_Z 1
 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
 #define PIXEL_TYPE GLuint
@@ -383,20 +343,17 @@ static void flat_8R8G8B_z_line( GLcontext *ctx,
 	   *zPtr = Z;		\
 	   *pixelPtr = pixel;	\
 	}
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, Z-less, PF_8R8G8B24 line into an XImage.
  */
-static void flat_8R8G8B24_z_line( GLcontext *ctx,
-                                    const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
+#define NAME flat_8R8G8B24_z_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
    const GLubyte *color = vert1->color;
-
 #define INTERP_Z 1
 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
 #define PIXEL_TYPE bgr_t
@@ -410,21 +367,18 @@ static void flat_8R8G8B24_z_line( GLcontext *ctx,
            pixelPtr->g = color[GCOMP];	\
            pixelPtr->b = color[BCOMP];	\
 	}
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, Z-less, PF_5R6G5B line into an XImage.
  */
-static void flat_5R6G5B_z_line( GLcontext *ctx,
-                                const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
+#define NAME flat_5R6G5B_z_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
    GLushort pixel = PACK_5R6G5B( color[0], color[1], color[2] );
-
 #define INTERP_Z 1
 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
 #define PIXEL_TYPE GLushort
@@ -437,18 +391,16 @@ static void flat_5R6G5B_z_line( GLcontext *ctx,
 	   *pixelPtr = pixel;	\
 	}
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, Z-less, PF_DITHER_5R6G5B line into an XImage.
  */
-static void flat_DITHER_5R6G5B_z_line( GLcontext *ctx,
-                                       const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
+#define NAME flat_DITHER_5R6G5B_z_line
+#define SETUP_CODE					\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;	\
    const GLubyte *color = vert1->color;
-
 #define INTERP_Z 1
 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
 #define PIXEL_TYPE GLushort
@@ -461,21 +413,18 @@ static void flat_DITHER_5R6G5B_z_line( GLcontext *ctx,
 	   PACK_TRUEDITHER(*pixelPtr, X, Y, color[0], color[1], color[2]); \
 	}
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, Z-less, PF_DITHER 8-bit line into an XImage.
  */
-static void flat_DITHER8_z_line( GLcontext *ctx,
-                                 const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
-   GLint r = color[0], g = color[1], b = color[2];
+#define NAME flat_DITHER8_z_line
+#define SETUP_CODE					\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;	\
+   const GLubyte *color = vert1->color;			\
+   GLint r = color[0], g = color[1], b = color[2];	\
    DITHER_SETUP;
-
-#define INTERP_XY 1
 #define INTERP_Z 1
 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
 #define PIXEL_TYPE GLubyte
@@ -488,21 +437,19 @@ static void flat_DITHER8_z_line( GLcontext *ctx,
 	   *pixelPtr = (GLubyte) DITHER( X, Y, r, g, b);	\
 	}
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, Z-less, PF_LOOKUP 8-bit line into an XImage.
  */
-static void flat_LOOKUP8_z_line( GLcontext *ctx,
-                                 const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
-   GLubyte pixel;
-   LOOKUP_SETUP;
+#define NAME flat_LOOKUP8_z_line
+#define SETUP_CODE						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
+   GLubyte pixel;						\
+   LOOKUP_SETUP;						\
    pixel = (GLubyte) LOOKUP( color[0], color[1], color[2] );
-
 #define INTERP_Z 1
 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
 #define PIXEL_TYPE GLubyte
@@ -514,22 +461,18 @@ static void flat_LOOKUP8_z_line( GLcontext *ctx,
 	   *zPtr = Z;		\
 	   *pixelPtr = pixel;	\
 	}
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 /*
  * Draw a flat-shaded, Z-less, PF_HPCR line into an XImage.
  */
-static void flat_HPCR_z_line( GLcontext *ctx,
-                              const SWvertex *vert0, const SWvertex *vert1 )
-{
-   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;
-   const GLubyte *color = vert1->color;
+#define NAME flat_HPCR_z_line
+#define SETUP_CODE 						\
+   XMesaContext xmesa = (XMesaContext) ctx->DriverCtx;		\
+   const GLubyte *color = vert1->color;				\
    GLint r = color[0], g = color[1], b = color[2];
-
-#define INTERP_XY 1
 #define INTERP_Z 1
 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
 #define PIXEL_TYPE GLubyte
@@ -541,9 +484,8 @@ static void flat_HPCR_z_line( GLcontext *ctx,
 	   *zPtr = Z;						\
 	   *pixelPtr = (GLubyte) DITHER_HPCR( X, Y, r, g, b);	\
 	}
-
 #include "swrast/s_linetemp.h"
-}
+
 
 
 static swrast_line_func get_line_func( GLcontext *ctx )
diff --git a/src/mesa/swrast/s_lines.c b/src/mesa/swrast/s_lines.c
index 1cb95596836..001b4dc3168 100644
--- a/src/mesa/swrast/s_lines.c
+++ b/src/mesa/swrast/s_lines.c
@@ -1,8 +1,8 @@
-/* $Id: s_lines.c,v 1.32 2002/10/30 19:59:33 brianp Exp $ */
+/* $Id: s_lines.c,v 1.33 2002/11/14 03:48:03 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  5.0
+ * Version:  5.1
  *
  * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
@@ -127,607 +127,104 @@ draw_wide_line( GLcontext *ctx, struct sw_span *span, GLboolean xMajor )
 /**********************************************************************/
 
 
-/* Flat, color index line */
-static void flat_ci_line( GLcontext *ctx,
-                          const SWvertex *vert0,
-			  const SWvertex *vert1 )
-{
-   GLint *x, *y;
-   struct sw_span span;
-
-   ASSERT(ctx->Light.ShadeModel == GL_FLAT);
-   ASSERT(!ctx->Line.StippleFlag);
-   ASSERT(ctx->Line.Width == 1.0F);
-
-   INIT_SPAN(span, GL_LINE, 0, SPAN_INDEX, SPAN_XY);
-   span.index = IntToFixed(vert1->index);
-   span.indexStep = 0;
-   x = span.array->x;
-   y = span.array->y;
-
-#define INTERP_XY 1
-#define PLOT(X,Y)		\
-   {				\
-      x[span.end] = X;		\
-      y[span.end] = Y;		\
-      span.end++;		\
-   }
-
+/* Simple color index line (no stipple, width=1, no Z, no fog, no tex)*/
+#define NAME simple_ci_line
+#define INTERP_INDEX
+#define RENDER_SPAN(span) _mesa_write_index_span(ctx, &span)
 #include "s_linetemp.h"
 
-   _mesa_write_index_span(ctx, &span);
-}
-
-
-/* Flat-shaded, RGBA line */
-static void flat_rgba_line( GLcontext *ctx,
-                            const SWvertex *vert0,
-			    const SWvertex *vert1 )
-{
-   struct sw_span span;
-   GLint *x, *y;
-
-   ASSERT(ctx->Light.ShadeModel == GL_FLAT);
-   ASSERT(!ctx->Line.StippleFlag);
-   ASSERT(ctx->Line.Width == 1.0F);
-
-   INIT_SPAN(span, GL_LINE, 0, SPAN_RGBA, SPAN_XY);
-   span.red = ChanToFixed(vert1->color[0]);
-   span.green = ChanToFixed(vert1->color[1]);
-   span.blue = ChanToFixed(vert1->color[2]);
-   span.alpha = ChanToFixed(vert1->color[3]);
-   span.redStep = 0;
-   span.greenStep = 0;
-   span.blueStep = 0;
-   span.alphaStep = 0;
-   x = span.array->x;
-   y = span.array->y;
-
-#define INTERP_XY 1
-#define PLOT(X,Y)		\
-   {				\
-      x[span.end] = X;		\
-      y[span.end] = Y;		\
-      span.end++;		\
-   }
 
+/* Simple RGBA index line (no stipple, width=1, no Z, no fog, no tex)*/
+#define NAME simple_rgba_line
+#define INTERP_RGBA
+#define RENDER_SPAN(span) _mesa_write_rgba_span(ctx, &span);
 #include "s_linetemp.h"
 
-   _mesa_write_rgba_span(ctx, &span);
-}
-
 
-/* Smooth shaded, color index line */
-static void smooth_ci_line( GLcontext *ctx,
-                            const SWvertex *vert0,
-			    const SWvertex *vert1 )
-{
-   struct sw_span span;
-   GLint *x, *y;
-   GLuint *index;
-
-   ASSERT(ctx->Light.ShadeModel == GL_SMOOTH);
-   ASSERT(!ctx->Line.StippleFlag);
-   ASSERT(ctx->Line.Width == 1.0F);
-
-   INIT_SPAN(span, GL_LINE, 0, 0, SPAN_XY | SPAN_INDEX);
-   x = span.array->x;
-   y = span.array->y;
-   index = span.array->index;
-
-#define INTERP_XY 1
-#define INTERP_INDEX 1
-#define PLOT(X,Y)		\
-   {				\
-      x[span.end] = X;		\
-      y[span.end] = Y;		\
-      index[span.end] = I;	\
-      span.end++;		\
+/* Z, fog, wide, stipple color index line */
+#define NAME general_ci_line
+#define INTERP_INDEX
+#define INTERP_Z
+#define INTERP_FOG
+#define RENDER_SPAN(span)					\
+   if (ctx->Line.StippleFlag) {					\
+      span.arrayMask |= SPAN_MASK;				\
+      compute_stipple_mask(ctx, span.end, span.array->mask);	\
+   }								\
+   if (ctx->Line.Width > 1.0) {					\
+      draw_wide_line(ctx, &span, dx > dy);			\
+   }								\
+   else {							\
+      _mesa_write_index_span(ctx, &span);			\
    }
-
 #include "s_linetemp.h"
 
-   _mesa_write_index_span(ctx, &span);
-}
-
-
-/* Smooth-shaded, RGBA line */
-static void smooth_rgba_line( GLcontext *ctx,
-                       	      const SWvertex *vert0,
-			      const SWvertex *vert1 )
-{
-   struct sw_span span;
-   GLint *x, *y;
-   GLchan (*rgba)[4];
-
-   ASSERT(ctx->Light.ShadeModel == GL_SMOOTH);
-   ASSERT(!ctx->Line.StippleFlag);
-   ASSERT(ctx->Line.Width == 1.0F);
-
-   INIT_SPAN(span, GL_LINE, 0, 0, SPAN_XY | SPAN_RGBA);
-   x = span.array->x;
-   y = span.array->y;
-   rgba = span.array->rgba;
-
-#define INTERP_XY 1
-#define INTERP_RGB 1
-#define INTERP_ALPHA 1
-#define PLOT(X,Y)				\
-   {						\
-      x[span.end] = X;				\
-      y[span.end] = Y;				\
-      rgba[span.end][RCOMP] = FixedToInt(r0);	\
-      rgba[span.end][GCOMP] = FixedToInt(g0);	\
-      rgba[span.end][BCOMP] = FixedToInt(b0);	\
-      rgba[span.end][ACOMP] = FixedToInt(a0);	\
-      span.end++;				\
-   }
-
-#include "s_linetemp.h"
-
-   _mesa_write_rgba_span(ctx, &span);
-}
-
-
-/* Smooth shaded, color index, any width, maybe stippled */
-static void general_smooth_ci_line( GLcontext *ctx,
-                           	    const SWvertex *vert0,
-				    const SWvertex *vert1 )
-{
-   GLboolean xMajor = GL_FALSE;
-   struct sw_span span;
-   GLint *x, *y;
-   GLdepth *z;
-   GLfloat *fog;
-   GLuint *index;
-
-   ASSERT(ctx->Light.ShadeModel == GL_SMOOTH);
-
-   INIT_SPAN(span, GL_LINE, 0, 0,
-	     SPAN_XY | SPAN_Z | SPAN_FOG | SPAN_INDEX);
-   x = span.array->x;
-   y = span.array->y;
-   z = span.array->z;
-   fog = span.array->fog;
-   index = span.array->index;
-
-#define SET_XMAJOR 1
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define INTERP_FOG 1
-#define INTERP_INDEX 1
-#define PLOT(X,Y)		\
-   {				\
-      x[span.end] = X;		\
-      y[span.end] = Y;		\
-      z[span.end] = Z;		\
-      fog[span.end] = fog0;	\
-      index[span.end] = I;	\
-      span.end++;		\
-   }
-#include "s_linetemp.h"
-
-   if (ctx->Line.StippleFlag) {
-      span.arrayMask |= SPAN_MASK;
-      compute_stipple_mask(ctx, span.end, span.array->mask);
-   }
-
-   if (ctx->Line.Width > 1.0) {
-      draw_wide_line(ctx, &span, xMajor);
-   }
-   else {
-      _mesa_write_index_span(ctx, &span);
-   }
-}
 
-
-/* Flat shaded, color index, any width, maybe stippled */
-static void general_flat_ci_line( GLcontext *ctx,
-                                  const SWvertex *vert0,
-				  const SWvertex *vert1 )
-{
-   GLboolean xMajor = GL_FALSE;
-   struct sw_span span;
-   GLint *x, *y;
-   GLdepth *z;
-   GLfloat *fog;
-
-   ASSERT(ctx->Light.ShadeModel == GL_FLAT);
-
-   INIT_SPAN(span, GL_LINE, 0, SPAN_INDEX,
-	     SPAN_XY | SPAN_Z | SPAN_FOG);
-   span.index = IntToFixed(vert1->index);
-   span.indexStep = 0;
-   x = span.array->x;
-   y = span.array->y;
-   z = span.array->z;
-   fog = span.array->fog;
-
-#define SET_XMAJOR 1
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define INTERP_FOG 1
-#define PLOT(X,Y)		\
-   {				\
-      x[span.end] = X;		\
-      y[span.end] = Y;		\
-      z[span.end] = Z;		\
-      fog[span.end] = fog0;	\
-      span.end++;		\
+/* Z, fog, wide, stipple RGBA line */
+#define NAME general_rgba_line
+#define INTERP_RGBA
+#define INTERP_Z
+#define INTERP_FOG
+#define RENDER_SPAN(span)					\
+   if (ctx->Line.StippleFlag) {					\
+      span.arrayMask |= SPAN_MASK;				\
+      compute_stipple_mask(ctx, span.end, span.array->mask);	\
+   }								\
+   if (ctx->Line.Width > 1.0) {					\
+      draw_wide_line(ctx, &span, dx > dy);			\
+   }								\
+   else {							\
+      _mesa_write_rgba_span(ctx, &span);			\
    }
 #include "s_linetemp.h"
 
-   if (ctx->Line.StippleFlag) {
-      span.arrayMask |= SPAN_MASK;
-      compute_stipple_mask(ctx, span.end, span.array->mask);
-   }
 
-   if (ctx->Line.Width > 1.0) {
-      draw_wide_line(ctx, &span, xMajor);
-   }
-   else {
-      _mesa_write_index_span(ctx, &span);
-   }
-}
-
-
-
-static void general_smooth_rgba_line( GLcontext *ctx,
-                                      const SWvertex *vert0,
-				      const SWvertex *vert1 )
-{
-   GLboolean xMajor = GL_FALSE;
-   struct sw_span span;
-   GLint *x, *y;
-   GLdepth *z;
-   GLchan (*rgba)[4];
-   GLfloat *fog;
-
-   ASSERT(ctx->Light.ShadeModel == GL_SMOOTH);
-
-   INIT_SPAN(span, GL_LINE, 0, 0,
-	     SPAN_XY | SPAN_Z | SPAN_FOG | SPAN_RGBA);
-   x = span.array->x;
-   y = span.array->y;
-   z = span.array->z;
-   rgba = span.array->rgba;
-   fog = span.array->fog;
-
-#define SET_XMAJOR 1
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define INTERP_FOG 1
-#define INTERP_RGB 1
-#define INTERP_ALPHA 1
-#define PLOT(X,Y)				\
-   {						\
-      x[span.end] = X;				\
-      y[span.end] = Y;				\
-      z[span.end] = Z;				\
-      rgba[span.end][RCOMP] = FixedToInt(r0);	\
-      rgba[span.end][GCOMP] = FixedToInt(g0);	\
-      rgba[span.end][BCOMP] = FixedToInt(b0);	\
-      rgba[span.end][ACOMP] = FixedToInt(a0);	\
-      fog[span.end] = fog0;			\
-      span.end++;				\
+/* Single-texture line, w/ fog, Z, specular, etc. */
+#define NAME textured_line
+#define INTERP_RGBA
+#define INTERP_Z
+#define INTERP_FOG
+#define INTERP_TEX
+#define RENDER_SPAN(span)					\
+   if (ctx->Line.StippleFlag) {					\
+      span.arrayMask |= SPAN_MASK;				\
+      compute_stipple_mask(ctx, span.end, span.array->mask);	\
+   }								\
+   if (ctx->Line.Width > 1.0) {					\
+      draw_wide_line(ctx, &span, dx > dy);			\
+   }								\
+   else {							\
+      _mesa_write_texture_span(ctx, &span);			\
    }
 #include "s_linetemp.h"
 
-   if (ctx->Line.StippleFlag) {
-      span.arrayMask |= SPAN_MASK;
-      compute_stipple_mask(ctx, span.end, span.array->mask);
-   }
-
-   if (ctx->Line.Width > 1.0) {
-      draw_wide_line(ctx, &span, xMajor);
-   }
-   else {
-      _mesa_write_rgba_span(ctx, &span);
-   }
-}
-
 
-static void general_flat_rgba_line( GLcontext *ctx,
-                                    const SWvertex *vert0,
-				    const SWvertex *vert1 )
-{
-   GLboolean xMajor = GL_FALSE;
-   struct sw_span span;
-   GLint *x, *y;
-   GLdepth *z;
-   GLfloat *fog;
-
-   ASSERT(ctx->Light.ShadeModel == GL_FLAT);
-
-   INIT_SPAN(span, GL_LINE, 0, SPAN_RGBA,
-	     SPAN_XY | SPAN_Z | SPAN_FOG);
-   span.red = ChanToFixed(vert1->color[0]);
-   span.green = ChanToFixed(vert1->color[1]);
-   span.blue = ChanToFixed(vert1->color[2]);
-   span.alpha = ChanToFixed(vert1->color[3]);
-   span.redStep = 0;
-   span.greenStep = 0;
-   span.blueStep = 0;
-   span.alphaStep = 0;
-   x = span.array->x;
-   y = span.array->y;
-   z = span.array->z;
-   fog = span.array->fog;
-
-#define SET_XMAJOR 1
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define INTERP_FOG 1
-#define PLOT(X,Y)		\
-   {				\
-      x[span.end] = X;		\
-      y[span.end] = Y;		\
-      z[span.end] = Z;		\
-      fog[span.end] = fog0;	\
-      span.end++;		\
+/* Multi-texture or separate specular line, w/ fog, Z, specular, etc. */
+#define NAME multitextured_line
+#define INTERP_RGBA
+#define INTERP_SPEC
+#define INTERP_Z
+#define INTERP_FOG
+#define INTERP_MULTITEX
+#define RENDER_SPAN(span)					\
+   if (ctx->Line.StippleFlag) {					\
+      span.arrayMask |= SPAN_MASK;				\
+      compute_stipple_mask(ctx, span.end, span.array->mask);	\
+   }								\
+   if (ctx->Line.Width > 1.0) {					\
+      draw_wide_line(ctx, &span, dx > dy);			\
+   }								\
+   else {							\
+      _mesa_write_texture_span(ctx, &span);			\
    }
 #include "s_linetemp.h"
 
-   if (ctx->Line.StippleFlag) {
-      span.arrayMask |= SPAN_MASK;
-      compute_stipple_mask(ctx, span.end, span.array->mask);
-   }
-
-   if (ctx->Line.Width > 1.0) {
-      draw_wide_line(ctx, &span, xMajor);
-   }
-   else {
-      _mesa_write_rgba_span(ctx, &span);
-   }
-}
 
 
-/* Flat-shaded, textured, any width, maybe stippled */
-static void flat_textured_line( GLcontext *ctx,
-                                const SWvertex *vert0,
-				const SWvertex *vert1 )
-{
-   GLboolean xMajor = GL_FALSE;
-   struct sw_span span;
-
-   ASSERT(ctx->Light.ShadeModel == GL_FLAT);
-
-   INIT_SPAN(span, GL_LINE, 0, SPAN_RGBA | SPAN_SPEC,
-	     SPAN_XY | SPAN_Z | SPAN_FOG | SPAN_TEXTURE | SPAN_LAMBDA);
-   span.red = ChanToFixed(vert1->color[0]);
-   span.green = ChanToFixed(vert1->color[1]);
-   span.blue = ChanToFixed(vert1->color[2]);
-   span.alpha = ChanToFixed(vert1->color[3]);
-   span.redStep = 0;
-   span.greenStep = 0;
-   span.blueStep = 0;
-   span.alphaStep = 0;
-   span.specRed = ChanToFixed(vert1->specular[0]);
-   span.specGreen = ChanToFixed(vert1->specular[1]);
-   span.specBlue = ChanToFixed(vert1->specular[2]);
-   span.specRedStep = 0;
-   span.specGreenStep = 0;
-   span.specBlueStep = 0;
-
-#define SET_XMAJOR 1
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define INTERP_FOG 1
-#define INTERP_TEX 1
-#define PLOT(X,Y)						\
-   {								\
-      span.array->x[span.end] = X;				\
-      span.array->y[span.end] = Y;				\
-      span.array->z[span.end] = Z;				\
-      span.array->fog[span.end] = fog0;				\
-      span.array->texcoords[0][span.end][0] = fragTexcoord[0];	\
-      span.array->texcoords[0][span.end][1] = fragTexcoord[1];	\
-      span.array->texcoords[0][span.end][2] = fragTexcoord[2];	\
-      span.array->lambda[0][span.end] = 0.0;			\
-      span.end++;						\
-   }
-#include "s_linetemp.h"
-
-   if (ctx->Line.StippleFlag) {
-      span.arrayMask |= SPAN_MASK;
-      compute_stipple_mask(ctx, span.end, span.array->mask);
-   }
-
-   if (ctx->Line.Width > 1.0) {
-      draw_wide_line(ctx, &span, xMajor);
-   }
-   else {
-      _mesa_write_texture_span(ctx, &span);
-   }
-}
-
-
-
-/* Smooth-shaded, textured, any width, maybe stippled */
-static void smooth_textured_line( GLcontext *ctx,
-                                  const SWvertex *vert0,
-				  const SWvertex *vert1 )
-{
-   GLboolean xMajor = GL_FALSE;
-   struct sw_span span;
-
-   ASSERT(ctx->Light.ShadeModel == GL_SMOOTH);
-
-   INIT_SPAN(span, GL_LINE, 0, 0,
-	     SPAN_XY | SPAN_Z | SPAN_FOG | SPAN_RGBA | SPAN_TEXTURE | SPAN_LAMBDA);
-
-#define SET_XMAJOR 1
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define INTERP_FOG 1
-#define INTERP_RGB 1
-#define INTERP_ALPHA 1
-#define INTERP_TEX 1
-#define PLOT(X,Y)						\
-   {								\
-      span.array->x[span.end] = X;				\
-      span.array->y[span.end] = Y;				\
-      span.array->z[span.end] = Z;				\
-      span.array->fog[span.end] = fog0;				\
-      span.array->rgba[span.end][RCOMP] = FixedToInt(r0);	\
-      span.array->rgba[span.end][GCOMP] = FixedToInt(g0);	\
-      span.array->rgba[span.end][BCOMP] = FixedToInt(b0);	\
-      span.array->rgba[span.end][ACOMP] = FixedToInt(a0);	\
-      span.array->texcoords[0][span.end][0] = fragTexcoord[0];	\
-      span.array->texcoords[0][span.end][1] = fragTexcoord[1];	\
-      span.array->texcoords[0][span.end][2] = fragTexcoord[2];	\
-      span.array->lambda[0][span.end] = 0.0;			\
-      span.end++;						\
-   }
-#include "s_linetemp.h"
-
-   if (ctx->Line.StippleFlag) {
-      span.arrayMask |= SPAN_MASK;
-      compute_stipple_mask(ctx, span.end, span.array->mask);
-   }
-
-   if (ctx->Line.Width > 1.0) {
-      draw_wide_line(ctx, &span, xMajor);
-   }
-   else {
-      _mesa_write_texture_span(ctx, &span);
-   }
-}
-
-
-/* Smooth-shaded, multitextured, any width, maybe stippled, separate specular
- * color interpolation.
- */
-static void smooth_multitextured_line( GLcontext *ctx,
-				       const SWvertex *vert0,
-				       const SWvertex *vert1 )
-{
-   GLboolean xMajor = GL_FALSE;
-   struct sw_span span;
-   GLuint u;
-
-   ASSERT(ctx->Light.ShadeModel == GL_SMOOTH);
-
-   INIT_SPAN(span, GL_LINE, 0, 0,
-	     SPAN_XY | SPAN_Z | SPAN_FOG | SPAN_RGBA | SPAN_SPEC | SPAN_TEXTURE | SPAN_LAMBDA);
-
-#define SET_XMAJOR 1
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define INTERP_FOG 1
-#define INTERP_RGB 1
-#define INTERP_SPEC 1
-#define INTERP_ALPHA 1
-#define INTERP_MULTITEX 1
-#define PLOT(X,Y)							\
-   {									\
-      span.array->x[span.end] = X;					\
-      span.array->y[span.end] = Y;					\
-      span.array->z[span.end] = Z;					\
-      span.array->fog[span.end] = fog0;					\
-      span.array->rgba[span.end][RCOMP] = FixedToInt(r0);		\
-      span.array->rgba[span.end][GCOMP] = FixedToInt(g0);		\
-      span.array->rgba[span.end][BCOMP] = FixedToInt(b0);		\
-      span.array->rgba[span.end][ACOMP] = FixedToInt(a0);		\
-      span.array->spec[span.end][RCOMP] = FixedToInt(sr0);		\
-      span.array->spec[span.end][GCOMP] = FixedToInt(sg0);		\
-      span.array->spec[span.end][BCOMP] = FixedToInt(sb0);		\
-      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {		\
-         if (ctx->Texture.Unit[u]._ReallyEnabled) {			\
-            span.array->texcoords[u][span.end][0] = fragTexcoord[u][0];	\
-            span.array->texcoords[u][span.end][1] = fragTexcoord[u][1];	\
-            span.array->texcoords[u][span.end][2] = fragTexcoord[u][2];	\
-            span.array->lambda[u][span.end] = 0.0;			\
-         }								\
-      }									\
-      span.end++;							\
-   }
-#include "s_linetemp.h"
-
-   if (ctx->Line.StippleFlag) {
-      span.arrayMask |= SPAN_MASK;
-      compute_stipple_mask(ctx, span.end, span.array->mask);
-   }
-
-   if (ctx->Line.Width > 1.0) {
-      draw_wide_line(ctx, &span, xMajor);
-   }
-   else {
-      _mesa_write_texture_span(ctx, &span);
-   }
-}
-
-
-/* Flat-shaded, multitextured, any width, maybe stippled, separate specular
- * color interpolation.
- */
-static void flat_multitextured_line( GLcontext *ctx,
-                                     const SWvertex *vert0,
-				     const SWvertex *vert1 )
-{
-   GLboolean xMajor = GL_FALSE;
-   struct sw_span span;
-   GLuint u;
-
-   ASSERT(ctx->Light.ShadeModel == GL_FLAT);
-
-   INIT_SPAN(span, GL_LINE, 0, SPAN_RGBA | SPAN_SPEC,
-	     SPAN_XY | SPAN_Z | SPAN_FOG | SPAN_TEXTURE | SPAN_LAMBDA);
-   span.red = ChanToFixed(vert1->color[0]);
-   span.green = ChanToFixed(vert1->color[1]);
-   span.blue = ChanToFixed(vert1->color[2]);
-   span.alpha = ChanToFixed(vert1->color[3]);
-   span.redStep = 0;
-   span.greenStep = 0;
-   span.blueStep = 0;
-   span.alphaStep = 0;
-   span.specRed = ChanToFixed(vert1->specular[0]);
-   span.specGreen = ChanToFixed(vert1->specular[1]);
-   span.specBlue = ChanToFixed(vert1->specular[2]);
-   span.specRedStep = 0;
-   span.specGreenStep = 0;
-   span.specBlueStep = 0;
-
-#define SET_XMAJOR 1
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define INTERP_FOG 1
-#define INTERP_MULTITEX 1
-#define PLOT(X,Y)							\
-   {									\
-      span.array->x[span.end] = X;					\
-      span.array->y[span.end] = Y;					\
-      span.array->z[span.end] = Z;					\
-      span.array->fog[span.end] = fog0;					\
-      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {		\
-         if (ctx->Texture.Unit[u]._ReallyEnabled) {			\
-            span.array->texcoords[u][span.end][0] = fragTexcoord[u][0];	\
-            span.array->texcoords[u][span.end][1] = fragTexcoord[u][1];	\
-            span.array->texcoords[u][span.end][2] = fragTexcoord[u][2];	\
-            span.array->lambda[u][span.end] = 0.0;			\
-         }								\
-      }									\
-      span.end++;							\
-   }
-#include "s_linetemp.h"
-
-   if (ctx->Line.StippleFlag) {
-      span.arrayMask |= SPAN_MASK;
-      compute_stipple_mask(ctx, span.end, span.array->mask);
-   }
-
-   if (ctx->Line.Width > 1.0) {
-      draw_wide_line(ctx, &span, xMajor);
-   }
-   else {
-      _mesa_write_texture_span(ctx, &span);
-   }
-}
-
-
-void _swrast_add_spec_terms_line( GLcontext *ctx,
-				  const SWvertex *v0,
-				  const SWvertex *v1 )
+void
+_swrast_add_spec_terms_line( GLcontext *ctx,
+                             const SWvertex *v0,
+                             const SWvertex *v1 )
 {
    SWvertex *ncv0 = (SWvertex *)v0;
    SWvertex *ncv1 = (SWvertex *)v1;
@@ -751,30 +248,18 @@ _mesa_print_line_function(GLcontext *ctx)
    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 
    _mesa_printf("Line Func == ");
-   if (swrast->Line == flat_ci_line)
-      _mesa_printf("flat_ci_line\n");
-   else if (swrast->Line == flat_rgba_line)
-      _mesa_printf("flat_rgba_line\n");
-   else if (swrast->Line == smooth_ci_line)
-      _mesa_printf("smooth_ci_line\n");
-   else if (swrast->Line == smooth_rgba_line)
-      _mesa_printf("smooth_rgba_line\n");
-   else if (swrast->Line == general_smooth_ci_line)
-      _mesa_printf("general_smooth_ci_line\n");
-   else if (swrast->Line == general_flat_ci_line)
-      _mesa_printf("general_flat_ci_line\n");
-   else if (swrast->Line == general_smooth_rgba_line)
-      _mesa_printf("general_smooth_rgba_line\n");
-   else if (swrast->Line == general_flat_rgba_line)
-      _mesa_printf("general_flat_rgba_line\n");
-   else if (swrast->Line == flat_textured_line)
-      _mesa_printf("flat_textured_line\n");
-   else if (swrast->Line == smooth_textured_line)
-      _mesa_printf("smooth_textured_line\n");
-   else if (swrast->Line == smooth_multitextured_line)
-      _mesa_printf("smooth_multitextured_line\n");
-   else if (swrast->Line == flat_multitextured_line)
-      _mesa_printf("flat_multitextured_line\n");
+   if (swrast->Line == simple_ci_line)
+      _mesa_printf("simple_ci_line\n");
+   else if (swrast->Line == simple_rgba_line)
+      _mesa_printf("simple_rgba_line\n");
+   else if (swrast->Line == general_ci_line)
+      _mesa_printf("general_ci_line\n");
+   else if (swrast->Line == general_rgba_line)
+      _mesa_printf("general_rgba_line\n");
+   else if (swrast->Line == textured_line)
+      _mesa_printf("textured_line\n");
+   else if (swrast->Line == multitextured_line)
+      _mesa_printf("multitextured_line\n");
    else
       _mesa_printf("Driver func %p\n", (void *) swrast->Line);
 }
@@ -822,54 +307,29 @@ _swrast_choose_line( GLcontext *ctx )
          ASSERT(swrast->Triangle);
       }
       else if (ctx->Texture._EnabledUnits) {
-         if (ctx->Texture._EnabledUnits > 1 ||	     
-	     (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR)) {
+         /* textured lines */
+         if (ctx->Texture._EnabledUnits > 0x1 || (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR)) {
             /* multi-texture and/or separate specular color */
-            if (ctx->Light.ShadeModel == GL_SMOOTH)
-               USE(smooth_multitextured_line);
-            else
-               USE(flat_multitextured_line);
+            USE(multitextured_line);
          }
          else {
-            if (ctx->Light.ShadeModel == GL_SMOOTH) {
-                USE(smooth_textured_line);
-            }
-            else {
-                USE(flat_textured_line);
-            }
+            USE(textured_line);
          }
       }
+      else if (ctx->Depth.Test || ctx->Fog.Enabled || ctx->Line.Width != 1.0
+               || ctx->Line.StippleFlag) {
+         /* no texture, but Z, fog, width>1, stipple, etc. */
+         if (rgbmode)
+            USE(general_rgba_line);
+         else
+            USE(general_ci_line);
+      }
       else {
-	 if (ctx->Light.ShadeModel == GL_SMOOTH) {
-            if (ctx->Depth.Test || ctx->Fog.Enabled || ctx->Line.Width != 1.0
-                || ctx->Line.StippleFlag) {
-               if (rgbmode)
-                  USE(general_smooth_rgba_line);
-               else
-                  USE(general_smooth_ci_line);
-            }
-            else {
-               if (rgbmode)
-                  USE(smooth_rgba_line);
-               else
-                  USE(smooth_ci_line);
-            }
-	 }
-         else {
-            if (ctx->Depth.Test || ctx->Fog.Enabled || ctx->Line.Width != 1.0
-                || ctx->Line.StippleFlag) {
-               if (rgbmode)
-                  USE(general_flat_rgba_line);
-               else
-                  USE(general_flat_ci_line);
-            }
-            else {
-               if (rgbmode)
-                  USE(flat_rgba_line);
-               else
-                  USE(flat_ci_line);
-            }
-         }
+         /* simplest lines */
+         if (rgbmode)
+            USE(simple_rgba_line);
+         else
+            USE(simple_ci_line);
       }
    }
    else if (ctx->RenderMode == GL_FEEDBACK) {
diff --git a/src/mesa/swrast/s_linetemp.h b/src/mesa/swrast/s_linetemp.h
index 1fb14dcd10a..4d21d1c9daf 100644
--- a/src/mesa/swrast/s_linetemp.h
+++ b/src/mesa/swrast/s_linetemp.h
@@ -1,8 +1,8 @@
-/* $Id: s_linetemp.h,v 1.14 2002/11/09 21:26:41 brianp Exp $ */
+/* $Id: s_linetemp.h,v 1.15 2002/11/14 03:48:03 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  5.0
+ * Version:  5.1
  *
  * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
@@ -34,9 +34,8 @@
  * must be interplated along the line:
  *    INTERP_Z        - if defined, interpolate Z values
  *    INTERP_FOG      - if defined, interpolate FOG values
- *    INTERP_RGB      - if defined, interpolate RGB values
+ *    INTERP_RGBA     - if defined, interpolate RGBA values
  *    INTERP_SPEC     - if defined, interpolate specular RGB values
- *    INTERP_ALPHA    - if defined, interpolate Alpha values
  *    INTERP_INDEX    - if defined, interpolate color index values
  *    INTERP_TEX      - if defined, interpolate unit 0 texcoords
  *    INTERP_MULTITEX - if defined, interpolate multi-texcoords
@@ -70,100 +69,35 @@
  */
 
 
-/*void line( GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1 )*/
+static void
+NAME( GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1 )
 {
+   struct sw_span span;
+   GLuint interpFlags = 0;
+   GLuint arrayFlags = SPAN_XY;
    GLint x0 = (GLint) vert0->win[0];
    GLint x1 = (GLint) vert1->win[0];
    GLint y0 = (GLint) vert0->win[1];
    GLint y1 = (GLint) vert1->win[1];
    GLint dx, dy;
-#ifdef INTERP_XY
+   GLint numPixels;
    GLint xstep, ystep;
-#endif
-#ifdef INTERP_Z
-   GLint z0, z1, dz;
+#if defined(DEPTH_TYPE)
    const GLint depthBits = ctx->Visual.depthBits;
    const GLint fixedToDepthShift = depthBits <= 16 ? FIXED_SHIFT : 0;
-#  define FixedToDepth(F)  ((F) >> fixedToDepthShift)
-#  ifdef DEPTH_TYPE
+#define FixedToDepth(F)  ((F) >> fixedToDepthShift)
    GLint zPtrXstep, zPtrYstep;
    DEPTH_TYPE *zPtr;
-#  endif
-#endif
-#ifdef INTERP_FOG
-   GLfloat fog0 = vert0->fog;
-   GLfloat dfog = vert1->fog - fog0;
-#endif
-#ifdef INTERP_RGB
-   GLfixed r0 = ChanToFixed(vert0->color[0]);
-   GLfixed dr = ChanToFixed(vert1->color[0]) - r0;
-   GLfixed g0 = ChanToFixed(vert0->color[1]);
-   GLfixed dg = ChanToFixed(vert1->color[1]) - g0;
-   GLfixed b0 = ChanToFixed(vert0->color[2]);
-   GLfixed db = ChanToFixed(vert1->color[2]) - b0;
-#endif
-#ifdef INTERP_SPEC
-   GLfixed sr0 = ChanToFixed(vert0->specular[0]);
-   GLfixed dsr = ChanToFixed(vert1->specular[0]) - sr0;
-   GLfixed sg0 = ChanToFixed(vert0->specular[1]);
-   GLfixed dsg = ChanToFixed(vert1->specular[1]) - sg0;
-   GLfixed sb0 = ChanToFixed(vert0->specular[2]);
-   GLfixed dsb = ChanToFixed(vert1->specular[2]) - sb0;
-#endif
-#ifdef INTERP_ALPHA
-   GLfixed a0 = ChanToFixed(vert0->color[3]);
-   GLfixed da = ChanToFixed(vert1->color[3]) - a0;
-#endif
-#ifdef INTERP_INDEX
-   GLint i0 = vert0->index << 8;
-   GLint di = (GLint) (vert1->index << 8) - i0;
-#endif
-#ifdef INTERP_TEX
-   const GLfloat invw0 = vert0->win[3];
-   const GLfloat invw1 = vert1->win[3];
-   GLfloat tex[4];
-   GLfloat dtex[4];
-   GLfloat fragTexcoord[4];
-#endif
-#ifdef INTERP_MULTITEX
-   const GLfloat invw0 = vert0->win[3];
-   const GLfloat invw1 = vert1->win[3];
-   GLfloat tex[MAX_TEXTURE_UNITS][4];
-   GLfloat dtex[MAX_TEXTURE_UNITS][4];
-   GLfloat fragTexcoord[MAX_TEXTURE_UNITS][4];
+#elif defined(INTERP_Z)
+   const GLint depthBits = ctx->Visual.depthBits;
 #endif
 #ifdef PIXEL_ADDRESS
    PIXEL_TYPE *pixelPtr;
    GLint pixelXstep, pixelYstep;
 #endif
-#ifdef INTERP_TEX
-   {
-      tex[0]  = invw0 * vert0->texcoord[0][0];
-      dtex[0] = invw1 * vert1->texcoord[0][0] - tex[0];
-      tex[1]  = invw0 * vert0->texcoord[0][1];
-      dtex[1] = invw1 * vert1->texcoord[0][1] - tex[1];
-      tex[2]  = invw0 * vert0->texcoord[0][2];
-      dtex[2] = invw1 * vert1->texcoord[0][2] - tex[2];
-      tex[3]  = invw0 * vert0->texcoord[0][3];
-      dtex[3] = invw1 * vert1->texcoord[0][3] - tex[3];
-   }
-#endif
-#ifdef INTERP_MULTITEX
-   {
-      GLuint u;
-      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
-         if (ctx->Texture.Unit[u]._ReallyEnabled) {
-            tex[u][0]  = invw0 * vert0->texcoord[u][0];
-            dtex[u][0] = invw1 * vert1->texcoord[u][0] - tex[u][0];
-	    tex[u][1]  = invw0 * vert0->texcoord[u][1];
-	    dtex[u][1] = invw1 * vert1->texcoord[u][1] - tex[u][1];
-	    tex[u][2]  = invw0 * vert0->texcoord[u][2];
-	    dtex[u][2] = invw1 * vert1->texcoord[u][2] - tex[u][2];
-	    tex[u][3]  = invw0 * vert0->texcoord[u][3];
-	    dtex[u][3] = invw1 * vert1->texcoord[u][3] - tex[u][3];
-	 }
-      }
-   }
+
+#ifdef SETUP_CODE
+   SETUP_CODE
 #endif
 
    /* Cull primitives with malformed coordinates.
@@ -174,6 +108,27 @@
 	 return;
    }
 
+#ifdef INTERP_RGBA
+   interpFlags |= SPAN_RGBA;
+#endif
+#ifdef INTERP_SPEC
+   interpFlags |= SPAN_SPEC;
+#endif
+#ifdef INTERP_INDEX
+   interpFlags |= SPAN_INDEX;
+#endif
+#ifdef INTERP_Z
+   interpFlags |= SPAN_Z;
+#endif
+#ifdef INTERP_FOG
+   interpFlags |= SPAN_FOG;
+#endif
+#if defined(INTERP_TEX) || defined(INTERP_MULTITEX)
+   interpFlags |= SPAN_TEXTURE;
+#endif
+
+   INIT_SPAN(span, GL_LINE, 0, interpFlags, arrayFlags);
+
    /*
    printf("%s():\n", __FUNCTION__);
    printf(" (%f, %f, %f) -> (%f, %f, %f)\n",
@@ -212,31 +167,14 @@
       }
    }
 #endif
+
    dx = x1 - x0;
    dy = y1 - y0;
-   if (dx==0 && dy==0) {
+   if (dx == 0 && dy == 0)
       return;
-   }
 
-   /*
-    * Setup
-    */
-#ifdef SETUP_CODE
-   SETUP_CODE
-#endif
-
-#ifdef INTERP_Z
-#  ifdef DEPTH_TYPE
-     zPtr = (DEPTH_TYPE *) _mesa_zbuffer_address(ctx, x0, y0);
-#  endif
-   if (depthBits <= 16) {
-      z0 = FloatToFixed(vert0->win[2]) + FIXED_HALF;
-      z1 = FloatToFixed(vert1->win[2]) + FIXED_HALF;
-   }
-   else {
-      z0 = (int) vert0->win[2];
-      z1 = (int) vert1->win[2];
-   }
+#ifdef DEPTH_TYPE
+   zPtr = (DEPTH_TYPE *) _mesa_zbuffer_address(ctx, x0, y0);
 #endif
 #ifdef PIXEL_ADDRESS
    pixelPtr = (PIXEL_TYPE *) PIXEL_ADDRESS(x0,y0);
@@ -244,10 +182,8 @@
 
    if (dx<0) {
       dx = -dx;   /* make positive */
-#ifdef INTERP_XY
       xstep = -1;
-#endif
-#if defined(INTERP_Z) && defined(DEPTH_TYPE)
+#ifdef DEPTH_TYPE
       zPtrXstep = -((GLint)sizeof(DEPTH_TYPE));
 #endif
 #ifdef PIXEL_ADDRESS
@@ -255,10 +191,8 @@
 #endif
    }
    else {
-#ifdef INTERP_XY
       xstep = 1;
-#endif
-#if defined(INTERP_Z) && defined(DEPTH_TYPE)
+#ifdef DEPTH_TYPE
       zPtrXstep = ((GLint)sizeof(DEPTH_TYPE));
 #endif
 #ifdef PIXEL_ADDRESS
@@ -268,10 +202,8 @@
 
    if (dy<0) {
       dy = -dy;   /* make positive */
-#ifdef INTERP_XY
       ystep = -1;
-#endif
-#if defined(INTERP_Z) && defined(DEPTH_TYPE)
+#ifdef DEPTH_TYPE
       zPtrYstep = -((GLint) (ctx->DrawBuffer->Width * sizeof(DEPTH_TYPE)));
 #endif
 #ifdef PIXEL_ADDRESS
@@ -279,10 +211,8 @@
 #endif
    }
    else {
-#ifdef INTERP_XY
       ystep = 1;
-#endif
-#if defined(INTERP_Z) && defined(DEPTH_TYPE)
+#ifdef DEPTH_TYPE
       zPtrYstep = (GLint) (ctx->DrawBuffer->Width * sizeof(DEPTH_TYPE));
 #endif
 #ifdef PIXEL_ADDRESS
@@ -290,146 +220,157 @@
 #endif
    }
 
-   /*
-    * Draw
-    */
+   ASSERT(dx >= 0);
+   ASSERT(dy >= 0);
 
-   if (dx>dy) {
-      /*** X-major line ***/
-      GLint i;
-      GLint errorInc = dy+dy;
-      GLint error = errorInc-dx;
-      GLint errorDec = error-dx;
-#ifdef SET_XMAJOR
-      xMajor = GL_TRUE;
-#endif
-#ifdef INTERP_Z
-      dz = (z1-z0) / dx;
-#endif
-#ifdef INTERP_FOG
-      dfog /= dx;
-#endif
-#ifdef INTERP_RGB
-      dr /= dx;   /* convert from whole line delta to per-pixel delta */
-      dg /= dx;
-      db /= dx;
+   span.end = numPixels = MAX2(dx, dy);
+
+#ifdef INTERP_RGBA
+   if (ctx->Light.ShadeModel == GL_SMOOTH) {
+      span.red   = ChanToFixed(vert0->color[0]);
+      span.green = ChanToFixed(vert0->color[1]);
+      span.blue  = ChanToFixed(vert0->color[2]);
+      span.alpha = ChanToFixed(vert0->color[3]);
+      span.redStep   = (ChanToFixed(vert1->color[0]) - span.red  ) / numPixels;
+      span.greenStep = (ChanToFixed(vert1->color[1]) - span.green) / numPixels;
+      span.blueStep  = (ChanToFixed(vert1->color[2]) - span.blue ) / numPixels;
+      span.alphaStep = (ChanToFixed(vert1->color[3]) - span.alpha) / numPixels;
+   }
+   else {
+      span.red   = ChanToFixed(vert1->color[0]);
+      span.green = ChanToFixed(vert1->color[1]);
+      span.blue  = ChanToFixed(vert1->color[2]);
+      span.alpha = ChanToFixed(vert1->color[3]);
+      span.redStep   = 0;
+      span.greenStep = 0;
+      span.blueStep  = 0;
+      span.alphaStep = 0;
+   }
 #endif
 #ifdef INTERP_SPEC
-      dsr /= dx;   /* convert from whole line delta to per-pixel delta */
-      dsg /= dx;
-      dsb /= dx;
-#endif
-#ifdef INTERP_ALPHA
-      da /= dx;
+   if (ctx->Light.ShadeModel == GL_SMOOTH) {
+      span.specRed       = ChanToFixed(vert0->specular[0]);
+      span.specGreen     = ChanToFixed(vert0->specular[1]);
+      span.specBlue      = ChanToFixed(vert0->specular[2]);
+      span.specRedStep   = (ChanToFixed(vert1->specular[0]) - span.specRed) / numPixels;
+      span.specGreenStep = (ChanToFixed(vert1->specular[1]) - span.specBlue) / numPixels;
+      span.specBlueStep  = (ChanToFixed(vert1->specular[2]) - span.specGreen) / numPixels;
+   }
+   else {
+      span.specRed       = ChanToFixed(vert1->specular[0]);
+      span.specGreen     = ChanToFixed(vert1->specular[1]);
+      span.specBlue      = ChanToFixed(vert1->specular[2]);
+      span.specRedStep   = 0;
+      span.specGreenStep = 0;
+      span.specBlueStep  = 0;
+   }
 #endif
 #ifdef INTERP_INDEX
-      di /= dx;
+   if (ctx->Light.ShadeModel == GL_SMOOTH) {
+      span.index = IntToFixed(vert0->index);
+      span.indexStep = IntToFixed(vert1->index - vert0->index) / numPixels;
+   }
+   else {
+      span.index = IntToFixed(vert1->index);
+      span.indexStep = 0;
+   }
 #endif
-#ifdef INTERP_TEX
-      {
-         const GLfloat invDx = 1.0F / (GLfloat) dx;
-         dtex[0] *= invDx;
-         dtex[1] *= invDx;
-         dtex[2] *= invDx;
-         dtex[3] *= invDx;
+#if defined(INTERP_Z) || defined(DEPTH_TYPE)
+   {
+      if (depthBits <= 16) {
+         span.z = FloatToFixed(vert0->win[2]) + FIXED_HALF;
+         span.zStep = FloatToFixed(vert1->win[2] - vert0->win[2]) / numPixels;
       }
-#endif
-#ifdef INTERP_MULTITEX
-      {
-         const GLfloat invDx = 1.0F / (GLfloat) dx;
-         GLuint u;
-         for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
-            if (ctx->Texture.Unit[u]._ReallyEnabled) {
-               dtex[u][0] *= invDx;
-               dtex[u][1] *= invDx;
-               dtex[u][2] *= invDx;
-               dtex[u][3] *= invDx;
-            }
-         }
+      else {
+         span.z = vert0->win[2];
+         span.zStep = (vert1->win[2] - vert0->win[2]) / numPixels;
       }
+   }
 #endif
-
-      for (i=0;i<dx;i++) {
-#ifdef INTERP_Z
-            GLdepth Z = FixedToDepth(z0);
-#endif
-#ifdef INTERP_INDEX
-            GLint I = i0 >> 8;
+#ifdef INTERP_FOG
+   span.fog = vert0->fog;
+   span.fogStep = (vert1->fog - vert0->fog) / numPixels;
 #endif
 #ifdef INTERP_TEX
-            {
-               const GLfloat invQ = tex[3] ? (1.0F / tex[3]) : 1.0F;
-               fragTexcoord[0] = tex[0] * invQ;
-               fragTexcoord[1] = tex[1] * invQ;
-               fragTexcoord[2] = tex[2] * invQ;
-               fragTexcoord[3] = tex[3];
-            }
+   {
+      const GLfloat invw0 = vert0->win[3];
+      const GLfloat invw1 = vert1->win[3];
+      const GLfloat invLen = 1.0F / numPixels;
+      GLfloat ds, dt, dr, dq;
+      span.tex[0][0] = invw0 * vert0->texcoord[0][0];
+      span.tex[0][1] = invw0 * vert0->texcoord[0][1];
+      span.tex[0][2] = invw0 * vert0->texcoord[0][2];
+      span.tex[0][3] = invw0 * vert0->texcoord[0][3];
+      ds = (invw1 * vert1->texcoord[0][0]) - span.tex[0][0];
+      dt = (invw1 * vert1->texcoord[0][1]) - span.tex[0][1];
+      dr = (invw1 * vert1->texcoord[0][2]) - span.tex[0][2];
+      dq = (invw1 * vert1->texcoord[0][3]) - span.tex[0][3];
+      span.texStepX[0][0] = ds * invLen;
+      span.texStepX[0][1] = dt * invLen;
+      span.texStepX[0][2] = dr * invLen;
+      span.texStepX[0][3] = dq * invLen;
+      span.texStepY[0][0] = 0.0F;
+      span.texStepY[0][1] = 0.0F;
+      span.texStepY[0][2] = 0.0F;
+      span.texStepY[0][3] = 0.0F;
+   }
 #endif
 #ifdef INTERP_MULTITEX
-            {
-               GLuint u;
-               for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
-                  if (ctx->Texture.Unit[u]._ReallyEnabled) {
-                     const GLfloat invQ = 1.0F / tex[u][3];
-                     fragTexcoord[u][0] = tex[u][0] * invQ;
-                     fragTexcoord[u][1] = tex[u][1] * invQ;
-                     fragTexcoord[u][2] = tex[u][2] * invQ;
-                     fragTexcoord[u][3] = tex[u][3];
-                  }
-               }
-            }
+   {
+      const GLfloat invLen = 1.0F / numPixels;
+      GLuint u;
+      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+         if (ctx->Texture.Unit[u]._ReallyEnabled) {
+            const GLfloat invw0 = vert0->win[3];
+            const GLfloat invw1 = vert1->win[3];
+            GLfloat ds, dt, dr, dq;
+            span.tex[u][0] = invw0 * vert0->texcoord[u][0];
+            span.tex[u][1] = invw0 * vert0->texcoord[u][1];
+            span.tex[u][2] = invw0 * vert0->texcoord[u][2];
+            span.tex[u][3] = invw0 * vert0->texcoord[u][3];
+            ds = (invw1 * vert1->texcoord[u][0]) - span.tex[u][0];
+            dt = (invw1 * vert1->texcoord[u][1]) - span.tex[u][1];
+            dr = (invw1 * vert1->texcoord[u][2]) - span.tex[u][2];
+            dq = (invw1 * vert1->texcoord[u][3]) - span.tex[u][3];
+            span.texStepX[u][0] = ds * invLen;
+            span.texStepX[u][1] = dt * invLen;
+            span.texStepX[u][2] = dr * invLen;
+            span.texStepX[u][3] = dq * invLen;
+            span.texStepY[u][0] = 0.0F;
+            span.texStepY[u][1] = 0.0F;
+            span.texStepY[u][2] = 0.0F;
+            span.texStepY[u][3] = 0.0F;
+	 }
+      }
+   }
 #endif
 
-            PLOT( x0, y0 );
+   /*
+    * Draw
+    */
 
-#ifdef INTERP_XY
-         x0 += xstep;
-#endif
-#ifdef INTERP_Z
-#  ifdef DEPTH_TYPE
-         zPtr = (DEPTH_TYPE *) ((GLubyte*) zPtr + zPtrXstep);
-#  endif
-         z0 += dz;
-#endif
-#ifdef INTERP_FOG
-	 fog0 += dfog;
-#endif
-#ifdef INTERP_RGB
-         r0 += dr;
-         g0 += dg;
-         b0 += db;
-#endif
-#ifdef INTERP_SPEC
-         sr0 += dsr;
-         sg0 += dsg;
-         sb0 += dsb;
-#endif
-#ifdef INTERP_ALPHA
-         a0 += da;
-#endif
-#ifdef INTERP_INDEX
-         i0 += di;
+   if (dx > dy) {
+      /*** X-major line ***/
+      GLint i;
+      GLint errorInc = dy+dy;
+      GLint error = errorInc-dx;
+      GLint errorDec = error-dx;
+
+      for (i = 0; i < dx; i++) {
+#ifdef DEPTH_TYPE
+         GLdepth Z = FixedToDepth(span.z);
 #endif
-#ifdef INTERP_TEX
-         tex[0] += dtex[0];
-         tex[1] += dtex[1];
-         tex[2] += dtex[2];
-         tex[3] += dtex[3];
+#ifdef PLOT
+         PLOT( x0, y0 );
+#else
+         span.array->x[i] = x0;
+         span.array->y[i] = y0;
 #endif
-#ifdef INTERP_MULTITEX
-         {
-            GLuint u;
-            for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
-               if (ctx->Texture.Unit[u]._ReallyEnabled) {
-                  tex[u][0] += dtex[u][0];
-                  tex[u][1] += dtex[u][1];
-                  tex[u][2] += dtex[u][2];
-                  tex[u][3] += dtex[u][3];
-               }
-            }
-         }
+         x0 += xstep;
+#ifdef DEPTH_TYPE
+         zPtr = (DEPTH_TYPE *) ((GLubyte*) zPtr + zPtrXstep);
+         span.z += span.zStep;
 #endif
-
 #ifdef PIXEL_ADDRESS
          pixelPtr = (PIXEL_TYPE*) ((GLubyte*) pixelPtr + pixelXstep);
 #endif
@@ -438,10 +379,8 @@
          }
          else {
             error += errorDec;
-#ifdef INTERP_XY
             y0 += ystep;
-#endif
-#if defined(INTERP_Z) && defined(DEPTH_TYPE)
+#ifdef DEPTH_TYPE
             zPtr = (DEPTH_TYPE *) ((GLubyte*) zPtr + zPtrYstep);
 #endif
 #ifdef PIXEL_ADDRESS
@@ -456,131 +395,21 @@
       GLint errorInc = dx+dx;
       GLint error = errorInc-dy;
       GLint errorDec = error-dy;
-#ifdef INTERP_Z
-      dz = (z1-z0) / dy;
-#endif
-#ifdef INTERP_FOG
-      dfog /= dy;
-#endif
-#ifdef INTERP_RGB
-      dr /= dy;   /* convert from whole line delta to per-pixel delta */
-      dg /= dy;
-      db /= dy;
-#endif
-#ifdef INTERP_SPEC
-      dsr /= dy;   /* convert from whole line delta to per-pixel delta */
-      dsg /= dy;
-      dsb /= dy;
-#endif
-#ifdef INTERP_ALPHA
-      da /= dy;
-#endif
-#ifdef INTERP_INDEX
-      di /= dy;
-#endif
-#ifdef INTERP_TEX
-      {
-         const GLfloat invDy = 1.0F / (GLfloat) dy;
-         dtex[0] *= invDy;
-         dtex[1] *= invDy;
-         dtex[2] *= invDy;
-         dtex[3] *= invDy;
-      }
-#endif
-#ifdef INTERP_MULTITEX
-      {
-         const GLfloat invDy = 1.0F / (GLfloat) dy;
-         GLuint u;
-         for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
-            if (ctx->Texture.Unit[u]._ReallyEnabled) {
-               dtex[u][0] *= invDy;
-               dtex[u][1] *= invDy;
-               dtex[u][2] *= invDy;
-               dtex[u][3] *= invDy;
-            }
-         }
-      }
-#endif
 
       for (i=0;i<dy;i++) {
-#ifdef INTERP_Z
-            GLdepth Z = FixedToDepth(z0);
+#ifdef DEPTH_TYPE
+         GLdepth Z = FixedToDepth(span.z);
 #endif
-#ifdef INTERP_INDEX
-            GLint I = i0 >> 8;
+#ifdef PLOT
+         PLOT( x0, y0 );
+#else
+         span.array->x[i] = x0;
+         span.array->y[i] = y0;
 #endif
-#ifdef INTERP_TEX
-            {
-               const GLfloat invQ = tex[3] ? (1.0F / tex[3]) : 1.0F;
-               fragTexcoord[0] = tex[0] * invQ;
-               fragTexcoord[1] = tex[1] * invQ;
-               fragTexcoord[2] = tex[2] * invQ;
-               fragTexcoord[3] = tex[3];
-            }
-#endif
-#ifdef INTERP_MULTITEX
-            {
-               GLuint u;
-               for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
-                  if (ctx->Texture.Unit[u]._ReallyEnabled) {
-                     const GLfloat invQ = 1.0F / tex[u][3];
-                     fragTexcoord[u][0] = tex[u][0] * invQ;
-                     fragTexcoord[u][1] = tex[u][1] * invQ;
-                     fragTexcoord[u][2] = tex[u][2] * invQ;
-                     fragTexcoord[u][3] = tex[u][3];
-                  }
-               }
-            }
-#endif
-
-            PLOT( x0, y0 );
-
-#ifdef INTERP_XY
          y0 += ystep;
-#endif
-#ifdef INTERP_Z
-#  ifdef DEPTH_TYPE
+#ifdef DEPTH_TYPE
          zPtr = (DEPTH_TYPE *) ((GLubyte*) zPtr + zPtrYstep);
-#  endif
-         z0 += dz;
-#endif
-#ifdef INTERP_FOG
-	 fog0 += dfog;
-#endif
-#ifdef INTERP_RGB
-         r0 += dr;
-         g0 += dg;
-         b0 += db;
-#endif
-#ifdef INTERP_SPEC
-         sr0 += dsr;
-         sg0 += dsg;
-         sb0 += dsb;
-#endif
-#ifdef INTERP_ALPHA
-         a0 += da;
-#endif
-#ifdef INTERP_INDEX
-         i0 += di;
-#endif
-#ifdef INTERP_TEX
-         tex[0] += dtex[0];
-         tex[1] += dtex[1];
-         tex[2] += dtex[2];
-         tex[3] += dtex[3];
-#endif
-#ifdef INTERP_MULTITEX
-         {
-            GLuint u;
-            for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
-               if (ctx->Texture.Unit[u]._ReallyEnabled) {
-                  tex[u][0] += dtex[u][0];
-                  tex[u][1] += dtex[u][1];
-                  tex[u][2] += dtex[u][2];
-                  tex[u][3] += dtex[u][3];
-               }
-            }
-         }
+         span.z += span.zStep;
 #endif
 #ifdef PIXEL_ADDRESS
          pixelPtr = (PIXEL_TYPE*) ((GLubyte*) pixelPtr + pixelYstep);
@@ -590,10 +419,8 @@
          }
          else {
             error += errorDec;
-#ifdef INTERP_XY
             x0 += xstep;
-#endif
-#if defined(INTERP_Z) && defined(DEPTH_TYPE)
+#ifdef DEPTH_TYPE
             zPtr = (DEPTH_TYPE *) ((GLubyte*) zPtr + zPtrXstep);
 #endif
 #ifdef PIXEL_ADDRESS
@@ -603,15 +430,18 @@
       }
    }
 
+#ifdef RENDER_SPAN
+   RENDER_SPAN( span );
+#endif
+
 }
 
 
-#undef INTERP_XY
+#undef NAME
 #undef INTERP_Z
 #undef INTERP_FOG
-#undef INTERP_RGB
+#undef INTERP_RGBA
 #undef INTERP_SPEC
-#undef INTERP_ALPHA
 #undef INTERP_TEX
 #undef INTERP_MULTITEX
 #undef INTERP_INDEX
@@ -623,4 +453,4 @@
 #undef PLOT
 #undef CLIP_HACK
 #undef FixedToDepth
-#undef SET_XMAJOR
+#undef RENDER_SPAN