Moved software rasterizer functionality to new directory.

1 files changed, 1173 insertions, 0 deletions

diff --git a/src/mesa/swrast/s_lines.c b/src/mesa/swrast/s_lines.c
new file mode 100644
index 00000000000..75a01cf12eb
--- /dev/null
+++ b/src/mesa/swrast/s_lines.c
@@ -0,0 +1,1173 @@
+/* $Id: s_lines.c,v 1.1 2000/10/31 18:00:04 keithw Exp $ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.5
+ * 
+ * Copyright (C) 1999-2000  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"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "glheader.h"
+#include "feedback.h"
+#include "macros.h"
+#include "mmath.h"
+#include "vb.h"
+
+#include "s_pb.h"
+#include "s_depth.h"
+
+
+
+/**********************************************************************/
+/*****                    Rasterization                           *****/
+/**********************************************************************/
+
+
+/*
+ * There are 4 pairs (RGBA, CI) of line drawing functions:
+ *   1. simple:  width=1 and no special rasterization functions (fastest)
+ *   2. flat:  width=1, non-stippled, flat-shaded, any raster operations
+ *   3. smooth:  width=1, non-stippled, smooth-shaded, any raster operations
+ *   4. general:  any other kind of line (slowest)
+ */
+
+
+/*
+ * All line drawing functions have the same arguments:
+ * v1, v2 - indexes of first and second endpoints into vertex buffer arrays
+ * pv     - provoking vertex: which vertex color/index to use for flat shading.
+ */
+
+
+
+
+
+
+#if MAX_WIDTH > MAX_HEIGHT
+#  define MAXPOINTS MAX_WIDTH
+#else
+#  define MAXPOINTS MAX_HEIGHT
+#endif
+
+
+/* Flat, color index line */
+static void flat_ci_line( GLcontext *ctx,
+                          GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   PB_SET_INDEX( ctx->PB, ctx->VB->IndexPtr->data[pvert] );
+
+#define INTERP_XY 1
+#define PLOT(X,Y)  PB_WRITE_PIXEL(ctx->PB, X, Y, 0, 0);
+
+#include "s_linetemp.h"
+
+   gl_flush_pb(ctx);
+}
+
+
+
+/* Flat, color index line with Z interpolation/testing */
+static void flat_ci_z_line( GLcontext *ctx,
+                            GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   PB_SET_INDEX( ctx->PB, ctx->VB->IndexPtr->data[pvert] );
+
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define PLOT(X,Y)  PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0);
+
+#include "s_linetemp.h"
+
+   gl_flush_pb(ctx);
+}
+
+
+
+/* Flat-shaded, RGBA line */
+static void flat_rgba_line( GLcontext *ctx,
+                            GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   const GLchan *color = ctx->VB->ColorPtr->data[pvert];
+   PB_SET_COLOR( ctx->PB, color[0], color[1], color[2], color[3] );
+
+#define INTERP_XY 1
+#define PLOT(X,Y)   PB_WRITE_PIXEL(ctx->PB, X, Y, 0, 0);
+
+#include "s_linetemp.h"
+
+   gl_flush_pb(ctx);
+}
+
+
+
+/* Flat-shaded, RGBA line with Z interpolation/testing */
+static void flat_rgba_z_line( GLcontext *ctx,
+                              GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   const GLchan *color = ctx->VB->ColorPtr->data[pvert];
+   PB_SET_COLOR( ctx->PB, color[0], color[1], color[2], color[3] );
+
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define PLOT(X,Y)   PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0);
+
+#include "s_linetemp.h"
+
+   gl_flush_pb(ctx);
+}
+
+
+
+/* Smooth shaded, color index line */
+static void smooth_ci_line( GLcontext *ctx,
+                            GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   GLint count = ctx->PB->count;
+   GLint *pbx = ctx->PB->x;
+   GLint *pby = ctx->PB->y;
+   GLuint *pbi = ctx->PB->index;
+   (void) pvert;
+
+   ctx->PB->mono = GL_FALSE;
+
+#define INTERP_XY 1
+#define INTERP_INDEX 1
+
+#define PLOT(X,Y)		\
+	pbx[count] = X;		\
+	pby[count] = Y;		\
+	pbi[count] = I;		\
+	count++;
+
+#include "s_linetemp.h"
+
+   ctx->PB->count = count;
+   gl_flush_pb(ctx);
+}
+
+
+
+/* Smooth shaded, color index line with Z interpolation/testing */
+static void smooth_ci_z_line( GLcontext *ctx,
+                              GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   GLint count = ctx->PB->count;
+   GLint *pbx = ctx->PB->x;
+   GLint *pby = ctx->PB->y;
+   GLdepth *pbz = ctx->PB->z;
+   GLuint *pbi = ctx->PB->index;
+   (void) pvert;
+
+   ctx->PB->mono = GL_FALSE;
+
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_INDEX 1
+
+#define PLOT(X,Y)		\
+	pbx[count] = X;		\
+	pby[count] = Y;		\
+	pbz[count] = Z;		\
+	pbi[count] = I;		\
+	count++;
+
+#include "s_linetemp.h"
+
+   ctx->PB->count = count;
+   gl_flush_pb(ctx);
+}
+
+
+
+/* Smooth-shaded, RGBA line */
+static void smooth_rgba_line( GLcontext *ctx,
+                       	      GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   GLint count = ctx->PB->count;
+   GLint *pbx = ctx->PB->x;
+   GLint *pby = ctx->PB->y;
+   GLchan (*pbrgba)[4] = ctx->PB->rgba;
+   (void) pvert;
+
+   ctx->PB->mono = GL_FALSE;
+
+#define INTERP_XY 1
+#define INTERP_RGB 1
+#define INTERP_ALPHA 1
+
+#define PLOT(X,Y)			\
+	pbx[count] = X;			\
+	pby[count] = Y;			\
+	pbrgba[count][RCOMP] = FixedToInt(r0);	\
+	pbrgba[count][GCOMP] = FixedToInt(g0);	\
+	pbrgba[count][BCOMP] = FixedToInt(b0);	\
+	pbrgba[count][ACOMP] = FixedToInt(a0);	\
+	count++;
+
+#include "s_linetemp.h"
+
+   ctx->PB->count = count;
+   gl_flush_pb(ctx);
+}
+
+
+
+/* Smooth-shaded, RGBA line with Z interpolation/testing */
+static void smooth_rgba_z_line( GLcontext *ctx,
+                       	        GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   GLint count = ctx->PB->count;
+   GLint *pbx = ctx->PB->x;
+   GLint *pby = ctx->PB->y;
+   GLdepth *pbz = ctx->PB->z;
+   GLfixed *pbfog = ctx->PB->fog;
+   GLchan (*pbrgba)[4] = ctx->PB->rgba;
+
+   (void) pvert;
+
+   ctx->PB->mono = GL_FALSE;
+
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_RGB 1
+#define INTERP_ALPHA 1
+
+#define PLOT(X,Y)			\
+	pbx[count] = X;			\
+	pby[count] = Y;			\
+	pbz[count] = Z;			\
+	pbfog[count] = fog0;			\
+	pbrgba[count][RCOMP] = FixedToInt(r0);	\
+	pbrgba[count][GCOMP] = FixedToInt(g0);	\
+	pbrgba[count][BCOMP] = FixedToInt(b0);	\
+	pbrgba[count][ACOMP] = FixedToInt(a0);	\
+	count++;
+
+#include "s_linetemp.h"
+
+   ctx->PB->count = count;
+   gl_flush_pb(ctx);
+}
+
+
+#define CHECK_FULL(count)			\
+	if (count >= PB_SIZE-MAX_WIDTH) {	\
+	   ctx->PB->count = count;		\
+	   gl_flush_pb(ctx);			\
+	   count = ctx->PB->count;		\
+	}
+
+
+
+/* Smooth shaded, color index, any width, maybe stippled */
+static void general_smooth_ci_line( GLcontext *ctx,
+                           	    GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   GLint count = ctx->PB->count;
+   GLint *pbx = ctx->PB->x;
+   GLint *pby = ctx->PB->y;
+   GLdepth *pbz = ctx->PB->z;
+   GLfixed *pbfog = ctx->PB->fog;
+   GLuint *pbi = ctx->PB->index;
+   (void) pvert;
+
+   ctx->PB->mono = GL_FALSE;
+
+   if (ctx->Line.StippleFlag) {
+      /* stippled */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_INDEX 1
+#define WIDE 1
+#define STIPPLE 1
+#define PLOT(X,Y)		\
+	pbx[count] = X;		\
+	pby[count] = Y;		\
+	pbz[count] = Z;		\
+	pbfog[count] = fog0;			\
+	pbi[count] = I;		\
+	count++;		\
+	CHECK_FULL(count);
+#include "s_linetemp.h"
+   }
+   else {
+      /* unstippled */
+      if (ctx->Line.Width==2.0F) {
+         /* special case: unstippled and width=2 */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_INDEX 1
+#define XMAJOR_PLOT(X,Y)			\
+	pbx[count] = X;  pbx[count+1] = X;	\
+	pby[count] = Y;  pby[count+1] = Y+1;	\
+	pbz[count] = Z;  pbz[count+1] = Z;	\
+	pbfog[count] = fog0;  pbfog[count+1] = fog0;	\
+	pbi[count] = I;  pbi[count+1] = I;	\
+	count += 2;				\
+	CHECK_FULL(count);
+#define YMAJOR_PLOT(X,Y)			\
+	pbx[count] = X;  pbx[count+1] = X+1;	\
+	pby[count] = Y;  pby[count+1] = Y;	\
+	pbz[count] = Z;  pbz[count+1] = Z;	\
+	pbfog[count] = fog0;  pbfog[count+1] = fog0;	\
+	pbi[count] = I;  pbi[count+1] = I;	\
+	count += 2;				\
+	CHECK_FULL(count);
+#include "s_linetemp.h"
+      }
+      else {
+         /* unstippled, any width */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_INDEX 1
+#define WIDE 1
+#define PLOT(X,Y)		\
+	pbx[count] = X;		\
+	pby[count] = Y;		\
+	pbz[count] = Z;		\
+	pbi[count] = I;		\
+	pbfog[count] = fog0;	\
+	count++;		\
+	CHECK_FULL(count);
+#include "s_linetemp.h"
+      }
+   }
+
+   ctx->PB->count = count;
+   gl_flush_pb(ctx);
+}
+
+
+/* Flat shaded, color index, any width, maybe stippled */
+static void general_flat_ci_line( GLcontext *ctx,
+                                  GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   GLint count;
+   GLint *pbx = ctx->PB->x;
+   GLint *pby = ctx->PB->y;
+   GLdepth *pbz = ctx->PB->z;
+   GLfixed *pbfog = ctx->PB->fog;
+   PB_SET_INDEX( ctx->PB, ctx->VB->IndexPtr->data[pvert] );
+   count = ctx->PB->count;
+
+   if (ctx->Line.StippleFlag) {
+      /* stippled, any width */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define WIDE 1
+#define STIPPLE 1
+#define PLOT(X,Y)		\
+	pbx[count] = X;		\
+	pby[count] = Y;		\
+	pbz[count] = Z;		\
+	pbfog[count] = fog0;		\
+	count++;		\
+	CHECK_FULL(count);
+#include "s_linetemp.h"
+   }
+   else {
+      /* unstippled */
+      if (ctx->Line.Width==2.0F) {
+         /* special case: unstippled and width=2 */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define XMAJOR_PLOT(X,Y)			\
+	pbx[count] = X;  pbx[count+1] = X;	\
+	pby[count] = Y;  pby[count+1] = Y+1;	\
+	pbz[count] = Z;  pbz[count+1] = Z;	\
+	pbfog[count] = fog0;  pbfog[count+1] = fog0;	\
+	count += 2;				\
+	CHECK_FULL(count);
+#define YMAJOR_PLOT(X,Y)			\
+	pbx[count] = X;  pbx[count+1] = X+1;	\
+	pby[count] = Y;  pby[count+1] = Y;	\
+	pbz[count] = Z;  pbz[count+1] = Z;	\
+	pbfog[count] = fog0;  pbfog[count+1] = fog0;	\
+	count += 2;				\
+	CHECK_FULL(count);
+#include "s_linetemp.h"
+      }
+      else {
+         /* unstippled, any width */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define WIDE 1
+#define PLOT(X,Y)		\
+	pbx[count] = X;		\
+	pby[count] = Y;		\
+	pbz[count] = Z;		\
+	pbfog[count] = fog0;		\
+	count++;		\
+	CHECK_FULL(count);
+#include "s_linetemp.h"
+      }
+   }
+
+   ctx->PB->count = count;
+   gl_flush_pb(ctx);
+}
+
+
+
+static void general_smooth_rgba_line( GLcontext *ctx,
+                                      GLuint vert0, GLuint vert1, GLuint pvert)
+{
+   GLint count = ctx->PB->count;
+   GLint *pbx = ctx->PB->x;
+   GLint *pby = ctx->PB->y;
+   GLdepth *pbz = ctx->PB->z;
+   GLfixed *pbfog = ctx->PB->fog;
+   GLchan (*pbrgba)[4] = ctx->PB->rgba;
+
+   (void) pvert;
+
+   ctx->PB->mono = GL_FALSE;
+
+   if (ctx->Line.StippleFlag) {
+      /* stippled */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_RGB 1
+#define INTERP_ALPHA 1
+#define WIDE 1
+#define STIPPLE 1
+#define PLOT(X,Y)				\
+	pbx[count] = X;				\
+	pby[count] = Y;				\
+	pbz[count] = Z;				\
+	pbfog[count] = fog0;		\
+	pbrgba[count][RCOMP] = FixedToInt(r0);	\
+	pbrgba[count][GCOMP] = FixedToInt(g0);	\
+	pbrgba[count][BCOMP] = FixedToInt(b0);	\
+	pbrgba[count][ACOMP] = FixedToInt(a0);	\
+	count++;				\
+	CHECK_FULL(count);
+#include "s_linetemp.h"
+   }
+   else {
+      /* unstippled */
+      if (ctx->Line.Width==2.0F) {
+         /* special case: unstippled and width=2 */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_RGB 1
+#define INTERP_ALPHA 1
+#define XMAJOR_PLOT(X,Y)				\
+	pbx[count] = X;  pbx[count+1] = X;		\
+	pby[count] = Y;  pby[count+1] = Y+1;		\
+	pbz[count] = Z;  pbz[count+1] = Z;		\
+	pbfog[count] = fog0;  pbfog[count+1] = fog0;	\
+	pbrgba[count][RCOMP] = FixedToInt(r0);		\
+	pbrgba[count][GCOMP] = FixedToInt(g0);		\
+	pbrgba[count][BCOMP] = FixedToInt(b0);		\
+	pbrgba[count][ACOMP] = FixedToInt(a0);		\
+	pbrgba[count+1][RCOMP] = FixedToInt(r0);	\
+	pbrgba[count+1][GCOMP] = FixedToInt(g0);	\
+	pbrgba[count+1][BCOMP] = FixedToInt(b0);	\
+	pbrgba[count+1][ACOMP] = FixedToInt(a0);	\
+	count += 2;					\
+	CHECK_FULL(count);
+#define YMAJOR_PLOT(X,Y)				\
+	pbx[count] = X;  pbx[count+1] = X+1;		\
+	pby[count] = Y;  pby[count+1] = Y;		\
+	pbz[count] = Z;  pbz[count+1] = Z;		\
+	pbfog[count] = fog0;  pbfog[count+1] = fog0;	\
+	pbrgba[count][RCOMP] = FixedToInt(r0);		\
+	pbrgba[count][GCOMP] = FixedToInt(g0);		\
+	pbrgba[count][BCOMP] = FixedToInt(b0);		\
+	pbrgba[count][ACOMP] = FixedToInt(a0);		\
+	pbrgba[count+1][RCOMP] = FixedToInt(r0);	\
+	pbrgba[count+1][GCOMP] = FixedToInt(g0);	\
+	pbrgba[count+1][BCOMP] = FixedToInt(b0);	\
+	pbrgba[count+1][ACOMP] = FixedToInt(a0);	\
+	count += 2;					\
+	CHECK_FULL(count);
+#include "s_linetemp.h"
+      }
+      else {
+         /* unstippled, any width */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_RGB 1
+#define INTERP_ALPHA 1
+#define WIDE 1
+#define PLOT(X,Y)				\
+	pbx[count] = X;				\
+	pby[count] = Y;				\
+	pbz[count] = Z;				\
+	pbfog[count] = fog0;  	\
+	pbrgba[count][RCOMP] = FixedToInt(r0);	\
+	pbrgba[count][GCOMP] = FixedToInt(g0);	\
+	pbrgba[count][BCOMP] = FixedToInt(b0);	\
+	pbrgba[count][ACOMP] = FixedToInt(a0);	\
+	count++;				\
+	CHECK_FULL(count);
+#include "s_linetemp.h"
+      }
+   }
+
+   ctx->PB->count = count;
+   gl_flush_pb(ctx);
+}
+
+
+static void general_flat_rgba_line( GLcontext *ctx,
+                                    GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   const GLchan *color = ctx->VB->ColorPtr->data[pvert];
+   PB_SET_COLOR( ctx->PB, color[0], color[1], color[2], color[3] );
+
+   if (ctx->Line.StippleFlag) {
+      /* stippled */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define WIDE 1
+#define STIPPLE 1
+#define PLOT(X,Y)  PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0);
+#include "s_linetemp.h"
+   }
+   else {
+      /* unstippled */
+      if (ctx->Line.Width==2.0F) {
+         /* special case: unstippled and width=2 */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define XMAJOR_PLOT(X,Y) PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0); \
+                         PB_WRITE_PIXEL(ctx->PB, X, Y+1, Z, fog0);
+#define YMAJOR_PLOT(X,Y)  PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0); \
+                          PB_WRITE_PIXEL(ctx->PB, X+1, Y, Z, fog0);
+#include "s_linetemp.h"
+      }
+      else {
+         /* unstippled, any width */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define WIDE 1
+#define PLOT(X,Y) PB_WRITE_PIXEL(ctx->PB, X, Y, Z, fog0);
+#include "s_linetemp.h"
+      }
+   }
+
+   gl_flush_pb(ctx);
+}
+
+
+/* Flat-shaded, textured, any width, maybe stippled */
+static void flat_textured_line( GLcontext *ctx,
+                                GLuint vert0, GLuint vert1, GLuint pv )
+{
+   GLint count;
+   GLint *pbx = ctx->PB->x;
+   GLint *pby = ctx->PB->y;
+   GLdepth *pbz = ctx->PB->z;
+   GLfixed *pbfog = ctx->PB->fog;
+   GLfloat *pbs = ctx->PB->s[0];
+   GLfloat *pbt = ctx->PB->t[0];
+   GLfloat *pbu = ctx->PB->u[0];
+   GLchan *color = ctx->VB->ColorPtr->data[pv];
+   PB_SET_COLOR( ctx->PB, color[0], color[1], color[2], color[3] );
+   count = ctx->PB->count;
+
+   if (ctx->Line.StippleFlag) {
+      /* stippled */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_TEX 1
+#define WIDE 1
+#define STIPPLE 1
+#define PLOT(X,Y)			\
+	{				\
+	   pbx[count] = X;		\
+	   pby[count] = Y;		\
+	   pbz[count] = Z;		\
+ 	   pbfog[count] = fog0;		\
+	   pbs[count] = fragTexcoord[0];\
+	   pbt[count] = fragTexcoord[1];\
+	   pbu[count] = fragTexcoord[2];\
+	   count++;			\
+	   CHECK_FULL(count);		\
+	}
+#include "s_linetemp.h"
+   }
+   else {
+      /* unstippled */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_TEX 1
+#define WIDE 1
+#define PLOT(X,Y)			\
+	{				\
+	   pbx[count] = X;		\
+	   pby[count] = Y;		\
+	   pbz[count] = Z;		\
+ 	   pbfog[count] = fog0;		\
+	   pbs[count] = fragTexcoord[0];\
+	   pbt[count] = fragTexcoord[1];\
+	   pbu[count] = fragTexcoord[2];\
+	   count++;			\
+	   CHECK_FULL(count);		\
+	}
+#include "s_linetemp.h"
+   }
+
+   ctx->PB->count = count;
+   gl_flush_pb(ctx);
+}
+
+
+
+/* Smooth-shaded, textured, any width, maybe stippled */
+static void smooth_textured_line( GLcontext *ctx,
+                                  GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   GLint count = ctx->PB->count;
+   GLint *pbx = ctx->PB->x;
+   GLint *pby = ctx->PB->y;
+   GLdepth *pbz = ctx->PB->z;
+   GLfixed *pbfog = ctx->PB->fog;
+   GLfloat *pbs = ctx->PB->s[0];
+   GLfloat *pbt = ctx->PB->t[0];
+   GLfloat *pbu = ctx->PB->u[0];
+   GLchan (*pbrgba)[4] = ctx->PB->rgba;
+   (void) pvert;
+
+   ctx->PB->mono = GL_FALSE;
+
+   if (ctx->Line.StippleFlag) {
+      /* stippled */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_RGB 1
+#define INTERP_ALPHA 1
+#define INTERP_TEX 1
+#define WIDE 1
+#define STIPPLE 1
+#define PLOT(X,Y)					\
+	{						\
+	   pbx[count] = X;				\
+	   pby[count] = Y;				\
+	   pbz[count] = Z;				\
+ 	   pbfog[count] = fog0;		\
+	   pbs[count] = fragTexcoord[0];		\
+	   pbt[count] = fragTexcoord[1];		\
+	   pbu[count] = fragTexcoord[2];		\
+	   pbrgba[count][RCOMP] = FixedToInt(r0);	\
+	   pbrgba[count][GCOMP] = FixedToInt(g0);	\
+	   pbrgba[count][BCOMP] = FixedToInt(b0);	\
+	   pbrgba[count][ACOMP] = FixedToInt(a0);	\
+	   count++;					\
+	   CHECK_FULL(count);				\
+	}
+#include "s_linetemp.h"
+   }
+   else {
+      /* unstippled */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_RGB 1
+#define INTERP_ALPHA 1
+#define INTERP_TEX 1
+#define WIDE 1
+#define PLOT(X,Y)					\
+	{						\
+	   pbx[count] = X;				\
+	   pby[count] = Y;				\
+	   pbz[count] = Z;				\
+ 	   pbfog[count] = fog0;		\
+	   pbs[count] = fragTexcoord[0];		\
+	   pbt[count] = fragTexcoord[1];		\
+	   pbu[count] = fragTexcoord[2];		\
+	   pbrgba[count][RCOMP] = FixedToInt(r0);	\
+	   pbrgba[count][GCOMP] = FixedToInt(g0);	\
+	   pbrgba[count][BCOMP] = FixedToInt(b0);	\
+	   pbrgba[count][ACOMP] = FixedToInt(a0);	\
+	   count++;					\
+	   CHECK_FULL(count);				\
+	}
+#include "s_linetemp.h"
+   }
+
+   ctx->PB->count = count;
+   gl_flush_pb(ctx);
+}
+
+
+/* Smooth-shaded, multitextured, any width, maybe stippled, separate specular
+ * color interpolation.
+ */
+static void smooth_multitextured_line( GLcontext *ctx,
+                                   GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   GLint count = ctx->PB->count;
+   GLint *pbx = ctx->PB->x;
+   GLint *pby = ctx->PB->y;
+   GLdepth *pbz = ctx->PB->z;
+   GLfixed *pbfog = ctx->PB->fog;
+   GLchan (*pbrgba)[4] = ctx->PB->rgba;
+   GLchan (*pbspec)[3] = ctx->PB->spec;
+
+   (void) pvert;
+
+   ctx->PB->mono = GL_FALSE;
+
+   if (ctx->Line.StippleFlag) {
+      /* stippled */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_RGB 1
+#define INTERP_SPEC 1
+#define INTERP_ALPHA 1
+#define INTERP_MULTITEX 1
+#define WIDE 1
+#define STIPPLE 1
+#define PLOT(X,Y)						\
+	{							\
+	   GLuint u;						\
+	   pbx[count] = X;					\
+	   pby[count] = Y;					\
+	   pbz[count] = Z;					\
+ 	   pbfog[count] = fog0;		\
+	   pbrgba[count][RCOMP] = FixedToInt(r0);		\
+	   pbrgba[count][GCOMP] = FixedToInt(g0);		\
+	   pbrgba[count][BCOMP] = FixedToInt(b0);		\
+	   pbrgba[count][ACOMP] = FixedToInt(a0);		\
+	   pbspec[count][RCOMP] = FixedToInt(sr0);		\
+	   pbspec[count][GCOMP] = FixedToInt(sg0);		\
+	   pbspec[count][BCOMP] = FixedToInt(sb0);		\
+	   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {	\
+	      if (ctx->Texture.Unit[u].ReallyEnabled) {		\
+	         ctx->PB->s[u][0] = fragTexcoord[u][0];		\
+	         ctx->PB->s[u][1] = fragTexcoord[u][1];		\
+	         ctx->PB->s[u][2] = fragTexcoord[u][2];		\
+	         ctx->PB->s[u][3] = fragTexcoord[u][3];		\
+	      }							\
+	   }							\
+	   count++;						\
+	   CHECK_FULL(count);					\
+	}
+#include "s_linetemp.h"
+   }
+   else {
+      /* unstippled */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_RGB 1
+#define INTERP_SPEC 1
+#define INTERP_ALPHA 1
+#define INTERP_MULTITEX 1
+#define WIDE 1
+#define PLOT(X,Y)						\
+	{							\
+	   GLuint u;						\
+	   pbx[count] = X;					\
+	   pby[count] = Y;					\
+	   pbz[count] = Z;					\
+ 	   pbfog[count] = fog0;		\
+	   pbrgba[count][RCOMP] = FixedToInt(r0);		\
+	   pbrgba[count][GCOMP] = FixedToInt(g0);		\
+	   pbrgba[count][BCOMP] = FixedToInt(b0);		\
+	   pbrgba[count][ACOMP] = FixedToInt(a0);		\
+	   pbspec[count][RCOMP] = FixedToInt(sr0);		\
+	   pbspec[count][GCOMP] = FixedToInt(sg0);		\
+	   pbspec[count][BCOMP] = FixedToInt(sb0);		\
+	   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {	\
+	      if (ctx->Texture.Unit[u].ReallyEnabled) {		\
+	         ctx->PB->s[u][0] = fragTexcoord[u][0];		\
+	         ctx->PB->s[u][1] = fragTexcoord[u][1];		\
+	         ctx->PB->s[u][2] = fragTexcoord[u][2];		\
+	         ctx->PB->s[u][3] = fragTexcoord[u][3];		\
+	      }							\
+	   }							\
+	   count++;						\
+	   CHECK_FULL(count);					\
+	}
+#include "s_linetemp.h"
+   }
+
+   ctx->PB->count = count;
+   gl_flush_pb(ctx);
+}
+
+
+/* Flat-shaded, multitextured, any width, maybe stippled, separate specular
+ * color interpolation.
+ */
+static void flat_multitextured_line( GLcontext *ctx,
+                                     GLuint vert0, GLuint vert1, GLuint pvert )
+{
+   GLint count = ctx->PB->count;
+   GLint *pbx = ctx->PB->x;
+   GLint *pby = ctx->PB->y;
+   GLdepth *pbz = ctx->PB->z;
+   GLfixed *pbfog = ctx->PB->fog;
+   GLchan (*pbrgba)[4] = ctx->PB->rgba;
+   GLchan (*pbspec)[3] = ctx->PB->spec;
+   GLchan *color = ctx->VB->ColorPtr->data[pvert];
+   GLchan sRed   = ctx->VB->SecondaryColorPtr->data ? ctx->VB->SecondaryColorPtr->data[pvert][0] : 0;
+   GLchan sGreen = ctx->VB->SecondaryColorPtr->data ? ctx->VB->SecondaryColorPtr->data[pvert][1] : 0;
+   GLchan sBlue  = ctx->VB->SecondaryColorPtr->data ? ctx->VB->SecondaryColorPtr->data[pvert][2] : 0;
+
+   (void) pvert;
+
+   ctx->PB->mono = GL_FALSE;
+
+   if (ctx->Line.StippleFlag) {
+      /* stippled */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_ALPHA 1
+#define INTERP_MULTITEX 1
+#define WIDE 1
+#define STIPPLE 1
+#define PLOT(X,Y)						\
+	{							\
+	   GLuint u;						\
+	   pbx[count] = X;					\
+	   pby[count] = Y;					\
+	   pbz[count] = Z;					\
+ 	   pbfog[count] = fog0;		\
+	   pbrgba[count][RCOMP] = color[0];			\
+	   pbrgba[count][GCOMP] = color[1];			\
+	   pbrgba[count][BCOMP] = color[2];			\
+	   pbrgba[count][ACOMP] = color[3];			\
+	   pbspec[count][RCOMP] = sRed;				\
+	   pbspec[count][GCOMP] = sGreen;			\
+	   pbspec[count][BCOMP] = sBlue;			\
+	   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {	\
+	      if (ctx->Texture.Unit[u].ReallyEnabled) {		\
+	         ctx->PB->s[u][0] = fragTexcoord[u][0];		\
+	         ctx->PB->s[u][1] = fragTexcoord[u][1];		\
+	         ctx->PB->s[u][2] = fragTexcoord[u][2];		\
+	         ctx->PB->s[u][3] = fragTexcoord[u][3];		\
+	      }							\
+	   }							\
+	   count++;						\
+	   CHECK_FULL(count);					\
+	}
+#include "s_linetemp.h"
+   }
+   else {
+      /* unstippled */
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define INTERP_ALPHA 1
+#define INTERP_MULTITEX 1
+#define WIDE 1
+#define PLOT(X,Y)						\
+	{							\
+	   GLuint u;						\
+	   pbx[count] = X;					\
+	   pby[count] = Y;					\
+	   pbz[count] = Z;					\
+ 	   pbfog[count] = fog0;		\
+	   pbrgba[count][RCOMP] = color[0];			\
+	   pbrgba[count][GCOMP] = color[1];			\
+	   pbrgba[count][BCOMP] = color[2];			\
+	   pbrgba[count][ACOMP] = color[3];			\
+	   pbspec[count][RCOMP] = sRed;				\
+	   pbspec[count][GCOMP] = sGreen;			\
+	   pbspec[count][BCOMP] = sBlue;			\
+	   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {	\
+	      if (ctx->Texture.Unit[u].ReallyEnabled) {		\
+	         ctx->PB->s[u][0] = fragTexcoord[u][0];		\
+	         ctx->PB->s[u][1] = fragTexcoord[u][1];		\
+	         ctx->PB->s[u][2] = fragTexcoord[u][2];		\
+	         ctx->PB->s[u][3] = fragTexcoord[u][3];		\
+	      }							\
+	   }							\
+	   count++;						\
+	   CHECK_FULL(count);					\
+	}
+#include "s_linetemp.h"
+   }
+
+   ctx->PB->count = count;
+   gl_flush_pb(ctx);
+}
+
+
+
+
+/*
+ * Antialiased RGBA line
+ *
+ * This AA line function isn't terribly efficient but it's pretty
+ * straight-forward to understand.  Also, it doesn't exactly conform
+ * to the specification.
+ */
+static void aa_rgba_line( GLcontext *ctx,
+                          GLuint vert0, GLuint vert1, GLuint pvert )
+{
+#define INTERP_RGBA 1
+#define PLOT(x, y)						\
+   {								\
+      PB_WRITE_RGBA_PIXEL( pb, (x), (y), z, fog0,		\
+			   red, green, blue, coverage );	\
+   }
+#include "s_lnaatemp.h"
+}
+
+/*
+ * Antialiased Textured RGBA line
+ *
+ * This AA line function isn't terribly efficient but it's pretty
+ * straight-forward to understand.  Also, it doesn't exactly conform
+ * to the specification.
+ */
+static void aa_tex_rgba_line( GLcontext *ctx,
+                              GLuint vert0, GLuint vert1, GLuint pvert )
+{
+#define INTERP_RGBA 1
+#define INTERP_TEX 1
+#define PLOT(x, y)							\
+   {									\
+      PB_WRITE_TEX_PIXEL( pb, (x), (y), z, fog0,                        \
+			  red, green, blue, coverage,	                \
+                 fragTexcoord[0], fragTexcoord[1], fragTexcoord[2] );	\
+   }
+#include "s_lnaatemp.h"
+}
+
+
+/*
+ * Antialiased Multitextured RGBA line
+ *
+ * This AA line function isn't terribly efficient but it's pretty
+ * straight-forward to understand.  Also, it doesn't exactly conform
+ * to the specification.
+ */
+static void aa_multitex_rgba_line( GLcontext *ctx,
+                                   GLuint vert0, GLuint vert1, GLuint pvert )
+{
+#define INTERP_RGBA 1
+#define INTERP_SPEC 1
+#define INTERP_MULTITEX 1
+#define PLOT(x, y)							\
+   {									\
+      PB_WRITE_MULTITEX_SPEC_PIXEL( pb, (x), (y), z, fog0,		\
+            red, green, blue, coverage, specRed, specGreen, specBlue,	\
+            fragTexcoord );						\
+   }
+#include "s_lnaatemp.h"
+}
+
+
+/*
+ * Antialiased CI line.  Same comments for RGBA antialiased lines apply.
+ */
+static void aa_ci_line( GLcontext *ctx,
+                        GLuint vert0, GLuint vert1, GLuint pvert )
+{
+#define INTERP_INDEX 1
+#define PLOT(x, y)						\
+   {								\
+      PB_WRITE_CI_PIXEL( pb, (x), (y), z, fog0, index + coverage );	\
+   }
+#include "s_lnaatemp.h"
+}
+
+
+/*
+ * Null rasterizer for measuring transformation speed.
+ */
+static void null_line( GLcontext *ctx, GLuint v1, GLuint v2, GLuint pv )
+{
+   (void) ctx;
+   (void) v1;
+   (void) v2;
+   (void) pv;
+}
+
+
+
+#ifdef DEBUG
+void
+_mesa_print_line_function(GLcontext *ctx)
+{
+   printf("Line Func == ");
+   if (ctx->Driver.LineFunc == flat_ci_line)
+      printf("flat_ci_line\n");
+   else if (ctx->Driver.LineFunc == flat_ci_z_line)
+      printf("flat_ci_z_line\n");
+   else if (ctx->Driver.LineFunc == flat_rgba_line)
+      printf("flat_rgba_line\n");
+   else if (ctx->Driver.LineFunc == flat_rgba_z_line)
+      printf("flat_rgba_z_line\n");
+   else if (ctx->Driver.LineFunc == smooth_ci_line)
+      printf("smooth_ci_line\n");
+   else if (ctx->Driver.LineFunc == smooth_ci_z_line)
+      printf("smooth_ci_z_line\n");
+   else if (ctx->Driver.LineFunc == smooth_rgba_line)
+      printf("smooth_rgba_line\n");
+   else if (ctx->Driver.LineFunc == smooth_rgba_z_line)
+      printf("smooth_rgba_z_line\n");
+   else if (ctx->Driver.LineFunc == general_smooth_ci_line)
+      printf("general_smooth_ci_line\n");
+   else if (ctx->Driver.LineFunc == general_flat_ci_line)
+      printf("general_flat_ci_line\n");
+   else if (ctx->Driver.LineFunc == general_smooth_rgba_line)
+      printf("general_smooth_rgba_line\n");
+   else if (ctx->Driver.LineFunc == general_flat_rgba_line)
+      printf("general_flat_rgba_line\n");
+   else if (ctx->Driver.LineFunc == flat_textured_line)
+      printf("flat_textured_line\n");
+   else if (ctx->Driver.LineFunc == smooth_textured_line)
+      printf("smooth_textured_line\n");
+   else if (ctx->Driver.LineFunc == smooth_multitextured_line)
+      printf("smooth_multitextured_line\n");
+   else if (ctx->Driver.LineFunc == flat_multitextured_line)
+      printf("flat_multitextured_line\n");
+   else if (ctx->Driver.LineFunc == aa_rgba_line)
+      printf("aa_rgba_line\n");
+   else if (ctx->Driver.LineFunc == aa_tex_rgba_line)
+      printf("aa_tex_rgba_line\n");
+   else if (ctx->Driver.LineFunc == aa_multitex_rgba_line)
+      printf("aa_multitex_rgba_line\n");
+   else if (ctx->Driver.LineFunc == aa_ci_line)
+      printf("aa_ci_line\n");
+   else if (ctx->Driver.LineFunc == null_line)
+      printf("null_line\n");
+   else
+      printf("Driver func %p\n", ctx->Driver.LineFunc);
+}
+#endif
+
+
+
+/*
+ * Determine which line drawing function to use given the current
+ * rendering context.
+ *
+ * Please update the summary flag _SWRAST_NEW_LINE if you add or remove
+ * tests to this code.
+ */
+void
+_swrast_set_line_function( GLcontext *ctx )
+{
+   GLboolean rgbmode = ctx->Visual.RGBAflag;
+   /* TODO: antialiased lines */
+
+   if (ctx->RenderMode==GL_RENDER) {
+      if (ctx->NoRaster) {
+         ctx->Driver.LineFunc = null_line;
+         return;
+      }
+      if (ctx->Driver.LineFunc) {
+         /* Device driver will draw lines. */
+	 return;
+      }
+
+      if (ctx->Line.SmoothFlag) {
+         /* antialiased lines */
+         if (rgbmode) {
+            if (ctx->Texture.ReallyEnabled) {
+               if (ctx->Texture.MultiTextureEnabled
+                  || ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR
+		  || ctx->Fog.ColorSumEnabled)
+                  /* Multitextured! */
+                  ctx->Driver.LineFunc = aa_multitex_rgba_line;
+               else
+                  ctx->Driver.LineFunc = aa_tex_rgba_line;
+            } else {
+               ctx->Driver.LineFunc = aa_rgba_line;
+            }
+         }
+         else {
+            ctx->Driver.LineFunc = aa_ci_line;
+         }
+      }
+      else if (ctx->Texture.ReallyEnabled) {
+         if (ctx->Texture.MultiTextureEnabled
+             || ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR
+ 	     || ctx->Fog.ColorSumEnabled) {
+            /* multi-texture and/or separate specular color */
+            if (ctx->Light.ShadeModel==GL_SMOOTH)
+               ctx->Driver.LineFunc = smooth_multitextured_line;
+            else
+               ctx->Driver.LineFunc = flat_multitextured_line;
+         }
+         else {
+            if (ctx->Light.ShadeModel==GL_SMOOTH) {
+                ctx->Driver.LineFunc = smooth_textured_line;
+            }
+            else {
+                ctx->Driver.LineFunc = flat_textured_line;
+            }
+         }
+      }
+      else if (ctx->Line.Width!=1.0 || ctx->Line.StippleFlag
+               || ctx->Line.SmoothFlag) {
+         if (ctx->Light.ShadeModel==GL_SMOOTH) {
+            if (rgbmode)
+               ctx->Driver.LineFunc = general_smooth_rgba_line;
+            else
+               ctx->Driver.LineFunc = general_smooth_ci_line;
+         }
+         else {
+            if (rgbmode)
+               ctx->Driver.LineFunc = general_flat_rgba_line;
+            else
+               ctx->Driver.LineFunc = general_flat_ci_line;
+         }
+      }
+      else {
+	 if (ctx->Light.ShadeModel==GL_SMOOTH) {
+	    /* Width==1, non-stippled, smooth-shaded */
+            if (ctx->Depth.Test || ctx->Fog.Enabled) {
+               if (rgbmode)
+                  ctx->Driver.LineFunc = smooth_rgba_z_line;
+               else
+                  ctx->Driver.LineFunc = smooth_ci_z_line;
+            }
+            else {
+               if (rgbmode)
+                  ctx->Driver.LineFunc = smooth_rgba_line;
+               else
+                  ctx->Driver.LineFunc = smooth_ci_line;
+            }
+	 }
+         else {
+	    /* Width==1, non-stippled, flat-shaded */
+            if (ctx->Depth.Test || ctx->Fog.Enabled) {
+               if (rgbmode)
+                  ctx->Driver.LineFunc = flat_rgba_z_line;
+               else
+                  ctx->Driver.LineFunc = flat_ci_z_line;
+            }
+            else {
+               if (rgbmode)
+                  ctx->Driver.LineFunc = flat_rgba_line;
+               else
+                  ctx->Driver.LineFunc = flat_ci_line;
+            }
+         }
+      }
+   }
+   else if (ctx->RenderMode==GL_FEEDBACK) {
+      ctx->Driver.LineFunc = gl_feedback_line;
+   }
+   else {
+      /* GL_SELECT mode */
+      ctx->Driver.LineFunc = gl_select_line;
+   }
+
+   /*_mesa_print_line_function(ctx);*/
+}