Initial import.

1 files changed, 1294 insertions, 0 deletions

diff --git a/src/mesa/tnl/t_vertex.c b/src/mesa/tnl/t_vertex.c
new file mode 100644
index 0000000..900648a
--- /dev/null
+++ b/src/mesa/tnl/t_vertex.c
@@ -0,0 +1,1294 @@
+/*
+ * Copyright 2003 Tungsten Graphics, inc.
+ * 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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 NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keithw@tungstengraphics.com>
+ */
+
+#include "glheader.h"
+#include "context.h"
+#include "colormac.h"
+
+#include "t_context.h"
+#include "t_vertex.h"
+
+
+/* Build and manage clipspace/ndc/window vertices.
+ *
+ * Another new mechanism designed and crying out for codegen.  Before
+ * that, it would be very interesting to investigate the merger of
+ * these vertices and those built in t_vtx_*.
+ */
+
+
+
+
+
+
+/*
+ * These functions take the NDC coordinates pointed to by 'in', apply the
+ * NDC->Viewport mapping and store the results at 'v'.
+ */
+
+static void
+insert_4f_viewport_4( const struct tnl_clipspace_attr *a, GLubyte *v,
+                      const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   out[0] = vp[0] * in[0] + vp[12];
+   out[1] = vp[5] * in[1] + vp[13];
+   out[2] = vp[10] * in[2] + vp[14];
+   out[3] = in[3];
+}
+
+static void insert_4f_viewport_3( const struct tnl_clipspace_attr *a, GLubyte *v,
+				const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   out[0] = vp[0] * in[0] + vp[12];
+   out[1] = vp[5] * in[1] + vp[13];
+   out[2] = vp[10] * in[2] + vp[14];
+   out[3] = 1;
+}
+
+static void insert_4f_viewport_2( const struct tnl_clipspace_attr *a, GLubyte *v,
+				const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   out[0] = vp[0] * in[0] + vp[12];
+   out[1] = vp[5] * in[1] + vp[13];
+   out[2] = vp[14];
+   out[3] = 1;
+}
+
+static void insert_4f_viewport_1( const struct tnl_clipspace_attr *a, GLubyte *v,
+				const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   out[0] = vp[0] * in[0] + vp[12];
+   out[1] = vp[13];
+   out[2] = vp[14];
+   out[3] = 1;
+}
+
+static void insert_3f_viewport_3( const struct tnl_clipspace_attr *a, GLubyte *v,
+				const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   out[0] = vp[0] * in[0] + vp[12];
+   out[1] = vp[5] * in[1] + vp[13];
+   out[2] = vp[10] * in[2] + vp[14];
+}
+
+static void insert_3f_viewport_2( const struct tnl_clipspace_attr *a, GLubyte *v,
+				const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   out[0] = vp[0] * in[0] + vp[12];
+   out[1] = vp[5] * in[1] + vp[13];
+   out[2] = vp[10] * in[2] + vp[14];
+}
+
+static void insert_3f_viewport_1( const struct tnl_clipspace_attr *a, GLubyte *v,
+				const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   out[0] = vp[0] * in[0] + vp[12];
+   out[1] = vp[13];
+   out[2] = vp[14];
+}
+
+static void insert_2f_viewport_2( const struct tnl_clipspace_attr *a, GLubyte *v,
+				const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   out[0] = vp[0] * in[0] + vp[12];
+   out[1] = vp[5] * in[1] + vp[13];
+}
+
+static void insert_2f_viewport_1( const struct tnl_clipspace_attr *a, GLubyte *v,
+				const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   out[0] = vp[0] * in[0] + vp[12];
+   out[1] = vp[13];
+}
+
+
+/*
+ * These functions do the same as above, except for the viewport mapping.
+ */
+
+static void insert_4f_4( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)(v);
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = in[1];
+   out[2] = in[2];
+   out[3] = in[3];
+}
+
+static void insert_4f_3( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)(v);
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = in[1];
+   out[2] = in[2];
+   out[3] = 1;
+}
+
+static void insert_4f_2( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)(v);
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = in[1];
+   out[2] = 0;
+   out[3] = 1;
+}
+
+static void insert_4f_1( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)(v);
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = 0;
+   out[2] = 0;
+   out[3] = 1;
+}
+
+static void insert_3f_xyw_4( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)(v);
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = in[1];
+   out[2] = in[3];
+}
+
+static void insert_3f_xyw_err( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   (void) a; (void) v; (void) in;
+   abort();
+}
+
+static void insert_3f_3( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)(v);
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = in[1];
+   out[2] = in[2];
+}
+
+static void insert_3f_2( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)(v);
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = in[1];
+   out[2] = 0;
+}
+
+static void insert_3f_1( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)(v);
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = 0;
+   out[2] = 0;
+}
+
+
+static void insert_2f_2( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)(v);
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = in[1];
+}
+
+static void insert_2f_1( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)(v);
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = 0;
+}
+
+static void insert_1f_1( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
+{
+   GLfloat *out = (GLfloat *)(v);
+   (void) a;
+
+   out[0] = in[0];
+}
+
+static void insert_4chan_4f_rgba_4( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				  const GLfloat *in )
+{
+   GLchan *c = (GLchan *)v;
+   (void) a;
+   UNCLAMPED_FLOAT_TO_CHAN(c[0], in[0]); 
+   UNCLAMPED_FLOAT_TO_CHAN(c[1], in[1]); 
+   UNCLAMPED_FLOAT_TO_CHAN(c[2], in[2]); 
+   UNCLAMPED_FLOAT_TO_CHAN(c[3], in[3]);
+}
+
+static void insert_4chan_4f_rgba_3( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				  const GLfloat *in )
+{
+   GLchan *c = (GLchan *)v;
+   (void) a;
+   UNCLAMPED_FLOAT_TO_CHAN(c[0], in[0]); 
+   UNCLAMPED_FLOAT_TO_CHAN(c[1], in[1]); 
+   UNCLAMPED_FLOAT_TO_CHAN(c[2], in[2]); 
+   c[3] = CHAN_MAX;
+}
+
+static void insert_4chan_4f_rgba_2( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				  const GLfloat *in )
+{
+   GLchan *c = (GLchan *)v;
+   (void) a;
+   UNCLAMPED_FLOAT_TO_CHAN(c[0], in[0]); 
+   UNCLAMPED_FLOAT_TO_CHAN(c[1], in[1]); 
+   c[2] = 0;
+   c[3] = CHAN_MAX;
+}
+
+static void insert_4chan_4f_rgba_1( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				  const GLfloat *in )
+{
+   GLchan *c = (GLchan *)v;
+   (void) a;
+   UNCLAMPED_FLOAT_TO_CHAN(c[0], in[0]); 
+   c[1] = 0;
+   c[2] = 0;
+   c[3] = CHAN_MAX;
+}
+
+static void insert_4ub_4f_rgba_4( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[2]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[3], in[3]);
+}
+
+static void insert_4ub_4f_rgba_3( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[2]);
+   v[3] = 0xff;
+}
+
+static void insert_4ub_4f_rgba_2( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
+   v[2] = 0;
+   v[3] = 0xff;
+}
+
+static void insert_4ub_4f_rgba_1( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
+   v[1] = 0;
+   v[2] = 0;
+   v[3] = 0xff;
+}
+
+static void insert_4ub_4f_bgra_4( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[2]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[3], in[3]);
+}
+
+static void insert_4ub_4f_bgra_3( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[2]);
+   v[3] = 0xff;
+}
+
+static void insert_4ub_4f_bgra_2( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
+   v[0] = 0;
+   v[3] = 0xff;
+}
+
+static void insert_4ub_4f_bgra_1( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
+   v[1] = 0;
+   v[0] = 0;
+   v[3] = 0xff;
+}
+
+static void insert_4ub_4f_argb_4( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[1]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[3], in[2]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[3]);
+}
+
+static void insert_4ub_4f_argb_3( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[1]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[3], in[2]);
+   v[0] = 0xff;
+}
+
+static void insert_4ub_4f_argb_2( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[1]);
+   v[3] = 0x00;
+   v[0] = 0xff;
+}
+
+static void insert_4ub_4f_argb_1( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[0]);
+   v[2] = 0x00;
+   v[3] = 0x00;
+   v[0] = 0xff;
+}
+
+static void insert_4ub_4f_abgr_4( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[3], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[1]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[2]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[3]);
+}
+
+static void insert_4ub_4f_abgr_3( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[3], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[1]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[2]);
+   v[0] = 0xff;
+}
+
+static void insert_4ub_4f_abgr_2( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[3], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[1]);
+   v[1] = 0x00;
+   v[0] = 0xff;
+}
+
+static void insert_4ub_4f_abgr_1( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[3], in[0]);
+   v[2] = 0x00;
+   v[1] = 0x00;
+   v[0] = 0xff;
+}
+
+static void insert_3ub_3f_rgb_3( const struct tnl_clipspace_attr *a, GLubyte *v, 
+			       const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[2]);
+}
+
+static void insert_3ub_3f_rgb_2( const struct tnl_clipspace_attr *a, GLubyte *v, 
+			       const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
+   v[2] = 0;
+}
+
+static void insert_3ub_3f_rgb_1( const struct tnl_clipspace_attr *a, GLubyte *v, 
+			       const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
+   v[1] = 0;
+   v[2] = 0;
+}
+
+static void insert_3ub_3f_bgr_3( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				 const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[2]);
+}
+
+static void insert_3ub_3f_bgr_2( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				 const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(v[1], in[1]);
+   v[0] = 0;
+}
+
+static void insert_3ub_3f_bgr_1( const struct tnl_clipspace_attr *a, GLubyte *v, 
+				 const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[2], in[0]);
+   v[1] = 0;
+   v[0] = 0;
+}
+
+
+static void insert_1ub_1f_1( const struct tnl_clipspace_attr *a, GLubyte *v, 
+			   const GLfloat *in )
+{
+   (void) a;
+   UNCLAMPED_FLOAT_TO_UBYTE(v[0], in[0]);
+}
+
+
+/***********************************************************************
+ * Functions to perform the reverse operations to the above, for
+ * swrast translation and clip-interpolation.
+ * 
+ * Currently always extracts a full 4 floats.
+ */
+
+static void extract_4f_viewport( const struct tnl_clipspace_attr *a, GLfloat *out, 
+				 const GLubyte *v )
+{
+   const GLfloat *in = (const GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   /* Although included for completeness, the position coordinate is
+    * usually handled differently during clipping.
+    */
+   out[0] = (in[0] - vp[12]) / vp[0];
+   out[1] = (in[1] - vp[13]) / vp[5];
+   out[2] = (in[2] - vp[14]) / vp[10];
+   out[3] = in[3];
+}
+
+static void extract_3f_viewport( const struct tnl_clipspace_attr *a, GLfloat *out, 
+				 const GLubyte *v )
+{
+   const GLfloat *in = (const GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   out[0] = (in[0] - vp[12]) / vp[0];
+   out[1] = (in[1] - vp[13]) / vp[5];
+   out[2] = (in[2] - vp[14]) / vp[10];
+   out[3] = 1;
+}
+
+
+static void extract_2f_viewport( const struct tnl_clipspace_attr *a, GLfloat *out, 
+				 const GLubyte *v )
+{
+   const GLfloat *in = (const GLfloat *)v;
+   const GLfloat * const vp = a->vp;
+   
+   out[0] = (in[0] - vp[12]) / vp[0];
+   out[1] = (in[1] - vp[13]) / vp[5];
+   out[2] = 0;
+   out[3] = 1;
+}
+
+
+static void extract_4f( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v  )
+{
+   const GLfloat *in = (const GLfloat *)v;
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = in[1];
+   out[2] = in[2];
+   out[3] = in[3];
+}
+
+static void extract_3f_xyw( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v )
+{
+   const GLfloat *in = (const GLfloat *)v;
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = in[1];
+   out[2] = 0;
+   out[3] = in[2];
+}
+
+
+static void extract_3f( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v )
+{
+   const GLfloat *in = (const GLfloat *)v;
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = in[1];
+   out[2] = in[2];
+   out[3] = 1;
+}
+
+
+static void extract_2f( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v )
+{
+   const GLfloat *in = (const GLfloat *)v;
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = in[1];
+   out[2] = 0;
+   out[3] = 1;
+}
+
+static void extract_1f( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v )
+{
+   const GLfloat *in = (const GLfloat *)v;
+   (void) a;
+   
+   out[0] = in[0];
+   out[1] = 0;
+   out[2] = 0;
+   out[3] = 1;
+}
+
+static void extract_4chan_4f_rgba( const struct tnl_clipspace_attr *a, GLfloat *out, 
+				 const GLubyte *v )
+{
+   GLchan *c = (GLchan *)v;
+   (void) a;
+
+   out[0] = CHAN_TO_FLOAT(c[0]);
+   out[1] = CHAN_TO_FLOAT(c[1]);
+   out[2] = CHAN_TO_FLOAT(c[2]);
+   out[3] = CHAN_TO_FLOAT(c[3]);
+}
+
+static void extract_4ub_4f_rgba( const struct tnl_clipspace_attr *a, GLfloat *out, 
+				 const GLubyte *v )
+{
+   (void) a;
+   out[0] = UBYTE_TO_FLOAT(v[0]);
+   out[1] = UBYTE_TO_FLOAT(v[1]);
+   out[2] = UBYTE_TO_FLOAT(v[2]);
+   out[3] = UBYTE_TO_FLOAT(v[3]);
+}
+
+static void extract_4ub_4f_bgra( const struct tnl_clipspace_attr *a, GLfloat *out, 
+				 const GLubyte *v )
+{
+   (void) a;
+   out[2] = UBYTE_TO_FLOAT(v[0]);
+   out[1] = UBYTE_TO_FLOAT(v[1]);
+   out[0] = UBYTE_TO_FLOAT(v[2]);
+   out[3] = UBYTE_TO_FLOAT(v[3]);
+}
+
+static void extract_4ub_4f_argb( const struct tnl_clipspace_attr *a, GLfloat *out, 
+				 const GLubyte *v )
+{
+   (void) a;
+   out[3] = UBYTE_TO_FLOAT(v[0]);
+   out[0] = UBYTE_TO_FLOAT(v[1]);
+   out[1] = UBYTE_TO_FLOAT(v[2]);
+   out[2] = UBYTE_TO_FLOAT(v[3]);
+}
+
+static void extract_4ub_4f_abgr( const struct tnl_clipspace_attr *a, GLfloat *out, 
+				 const GLubyte *v )
+{
+   (void) a;
+   out[3] = UBYTE_TO_FLOAT(v[0]);
+   out[2] = UBYTE_TO_FLOAT(v[1]);
+   out[1] = UBYTE_TO_FLOAT(v[2]);
+   out[0] = UBYTE_TO_FLOAT(v[3]);
+}
+
+static void extract_3ub_3f_rgb( const struct tnl_clipspace_attr *a, GLfloat *out, 
+				const GLubyte *v )
+{
+   (void) a;
+   out[0] = UBYTE_TO_FLOAT(v[0]);
+   out[1] = UBYTE_TO_FLOAT(v[1]);
+   out[2] = UBYTE_TO_FLOAT(v[2]);
+   out[3] = 1;
+}
+
+static void extract_3ub_3f_bgr( const struct tnl_clipspace_attr *a, GLfloat *out, 
+				const GLubyte *v )
+{
+   (void) a;
+   out[2] = UBYTE_TO_FLOAT(v[0]);
+   out[1] = UBYTE_TO_FLOAT(v[1]);
+   out[0] = UBYTE_TO_FLOAT(v[2]);
+   out[3] = 1;
+}
+
+static void extract_1ub_1f( const struct tnl_clipspace_attr *a, GLfloat *out, const GLubyte *v )
+{
+   (void) a;
+   out[0] = UBYTE_TO_FLOAT(v[0]);
+   out[1] = 0;
+   out[2] = 0;
+   out[3] = 1;
+}
+
+
+static struct {
+   const char *name;
+   tnl_extract_func extract;
+   tnl_insert_func insert[4];
+   const GLuint attrsize;
+} format_info[EMIT_MAX] = {
+
+   { "1f",
+     extract_1f,
+     { insert_1f_1, insert_1f_1, insert_1f_1, insert_1f_1 },
+     sizeof(GLfloat) },
+
+   { "2f",
+     extract_2f,
+     { insert_2f_1, insert_2f_2, insert_2f_2, insert_2f_2 },
+     2 * sizeof(GLfloat) },
+
+   { "3f",
+     extract_3f,
+     { insert_3f_1, insert_3f_2, insert_3f_3, insert_3f_3 },
+     3 * sizeof(GLfloat) },
+
+   { "4f",
+     extract_4f,
+     { insert_4f_1, insert_4f_2, insert_4f_3, insert_4f_4 },
+     4 * sizeof(GLfloat) },
+
+   { "2f_viewport",
+     extract_2f_viewport,
+     { insert_2f_viewport_1, insert_2f_viewport_2, insert_2f_viewport_2,
+       insert_2f_viewport_2 },
+     2 * sizeof(GLfloat) },
+
+   { "3f_viewport",
+     extract_3f_viewport,
+     { insert_3f_viewport_1, insert_3f_viewport_2, insert_3f_viewport_3,
+       insert_3f_viewport_3 },
+     3 * sizeof(GLfloat) },
+
+   { "4f_viewport",
+     extract_4f_viewport,
+     { insert_4f_viewport_1, insert_4f_viewport_2, insert_4f_viewport_3,
+       insert_4f_viewport_4 }, 
+     4 * sizeof(GLfloat) },
+
+   { "3f_xyw",
+     extract_3f_xyw,
+     { insert_3f_xyw_err, insert_3f_xyw_err, insert_3f_xyw_err, 
+       insert_3f_xyw_4 },
+     3 * sizeof(GLfloat) },
+
+   { "1ub_1f",
+     extract_1ub_1f,
+     { insert_1ub_1f_1, insert_1ub_1f_1, insert_1ub_1f_1, insert_1ub_1f_1 },
+     sizeof(GLubyte) },
+
+   { "3ub_3f_rgb",
+     extract_3ub_3f_rgb,
+     { insert_3ub_3f_rgb_1, insert_3ub_3f_rgb_2, insert_3ub_3f_rgb_3,
+       insert_3ub_3f_rgb_3 },
+     3 * sizeof(GLubyte) },
+
+   { "3ub_3f_bgr",
+     extract_3ub_3f_bgr,
+     { insert_3ub_3f_bgr_1, insert_3ub_3f_bgr_2, insert_3ub_3f_bgr_3,
+       insert_3ub_3f_bgr_3 },
+     3 * sizeof(GLubyte) },
+
+   { "4ub_4f_rgba",
+     extract_4ub_4f_rgba,
+     { insert_4ub_4f_rgba_1, insert_4ub_4f_rgba_2, insert_4ub_4f_rgba_3, 
+       insert_4ub_4f_rgba_4 },
+     4 * sizeof(GLubyte) },
+
+   { "4ub_4f_bgra",
+     extract_4ub_4f_bgra,
+     { insert_4ub_4f_bgra_1, insert_4ub_4f_bgra_2, insert_4ub_4f_bgra_3,
+       insert_4ub_4f_bgra_4 },
+     4 * sizeof(GLubyte) },
+
+   { "4ub_4f_argb",
+     extract_4ub_4f_argb,
+     { insert_4ub_4f_argb_1, insert_4ub_4f_argb_2, insert_4ub_4f_argb_3,
+       insert_4ub_4f_argb_4 },
+     4 * sizeof(GLubyte) },
+
+   { "4ub_4f_abgr",
+     extract_4ub_4f_abgr,
+     { insert_4ub_4f_abgr_1, insert_4ub_4f_abgr_2, insert_4ub_4f_abgr_3,
+       insert_4ub_4f_abgr_4 },
+     4 * sizeof(GLubyte) },
+
+   { "4chan_4f_rgba",
+     extract_4chan_4f_rgba,
+     { insert_4chan_4f_rgba_1, insert_4chan_4f_rgba_2, insert_4chan_4f_rgba_3,
+       insert_4chan_4f_rgba_4 },
+     4 * sizeof(GLchan) },
+
+   { "pad",
+     0,
+     { 0, 0, 0, 0 },
+     0 }
+
+};
+     
+
+/***********************************************************************
+ * Generic (non-codegen) functions for whole vertices or groups of
+ * vertices
+ */
+
+static void generic_emit( GLcontext *ctx,
+			  GLuint start, GLuint end,
+			  void *dest )
+{
+   struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   struct tnl_clipspace_attr *a = vtx->attr;
+   GLubyte *v = (GLubyte *)dest;
+   GLuint i, j;
+   const GLuint count = vtx->attr_count;
+   GLuint stride;
+
+   for (j = 0; j < count; j++) {
+      GLvector4f *vptr = VB->AttribPtr[a[j].attrib];
+      a[j].inputstride = vptr->stride;
+      a[j].inputptr = ((GLubyte *)vptr->data) + start * vptr->stride;
+      a[j].emit = a[j].insert[vptr->size - 1];
+   }
+
+   end -= start;
+   stride = vtx->vertex_size;
+
+   for (i = 0 ; i < end ; i++, v += stride) {
+      for (j = 0; j < count; j++) {
+	 GLfloat *in = (GLfloat *)a[j].inputptr;
+	 a[j].inputptr += a[j].inputstride;
+	 a[j].emit( &a[j], v + a[j].vertoffset, in );
+      }
+   }
+}
+
+
+static void generic_interp( GLcontext *ctx,
+			    GLfloat t,
+			    GLuint edst, GLuint eout, GLuint ein,
+			    GLboolean force_boundary )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   struct vertex_buffer *VB = &tnl->vb;
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   const GLubyte *vin  = vtx->vertex_buf + ein  * vtx->vertex_size;
+   const GLubyte *vout = vtx->vertex_buf + eout * vtx->vertex_size;
+   GLubyte *vdst = vtx->vertex_buf + edst * vtx->vertex_size;
+   const struct tnl_clipspace_attr *a = vtx->attr;
+   const GLuint attr_count = vtx->attr_count;
+   GLuint j;
+   (void) force_boundary;
+
+   if (tnl->NeedNdcCoords) {
+      const GLfloat *dstclip = VB->ClipPtr->data[edst];
+      if (dstclip[3] != 0.0) {
+	 const GLfloat w = 1.0f / dstclip[3];
+	 GLfloat pos[4];
+
+	 pos[0] = dstclip[0] * w;
+	 pos[1] = dstclip[1] * w;
+	 pos[2] = dstclip[2] * w;
+	 pos[3] = w;
+
+	 a[0].insert[4-1]( &a[0], vdst, pos );
+      }
+   }
+   else {
+      a[0].insert[4-1]( &a[0], vdst, VB->ClipPtr->data[edst] );
+   }
+
+
+   for (j = 1; j < attr_count; j++) {
+      GLfloat fin[4], fout[4], fdst[4];
+	 
+      a[j].extract( &a[j], fin, vin + a[j].vertoffset );
+      a[j].extract( &a[j], fout, vout + a[j].vertoffset );
+
+      INTERP_F( t, fdst[3], fout[3], fin[3] );
+      INTERP_F( t, fdst[2], fout[2], fin[2] );
+      INTERP_F( t, fdst[1], fout[1], fin[1] );
+      INTERP_F( t, fdst[0], fout[0], fin[0] );
+
+      a[j].insert[4-1]( &a[j], vdst + a[j].vertoffset, fdst );
+   }
+}
+
+
+/* Extract color attributes from one vertex and insert them into
+ * another.  (Shortcircuit extract/insert with memcpy).
+ */
+static void generic_copy_pv( GLcontext *ctx, GLuint edst, GLuint esrc )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   GLubyte *vsrc = vtx->vertex_buf + esrc * vtx->vertex_size;
+   GLubyte *vdst = vtx->vertex_buf + edst * vtx->vertex_size;
+   const struct tnl_clipspace_attr *a = vtx->attr;
+   const GLuint attr_count = vtx->attr_count;
+   GLuint j;
+
+   for (j = 0; j < attr_count; j++) {
+      if (a[j].attrib == VERT_ATTRIB_COLOR0 ||
+	  a[j].attrib == VERT_ATTRIB_COLOR1) {
+
+	 _mesa_memcpy( vdst + a[j].vertoffset,
+                       vsrc + a[j].vertoffset,
+                       a[j].vertattrsize );
+      }
+   }
+}
+
+
+/* Helper functions for hardware which doesn't put back colors and/or
+ * edgeflags into vertices.
+ */
+static void generic_interp_extras( GLcontext *ctx,
+				   GLfloat t,
+				   GLuint dst, GLuint out, GLuint in,
+				   GLboolean force_boundary )
+{
+   struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
+
+   if (VB->ColorPtr[1]) {
+      assert(VB->ColorPtr[1]->stride == 4 * sizeof(GLfloat));
+
+      INTERP_4F( t,
+		 VB->ColorPtr[1]->data[dst],
+		 VB->ColorPtr[1]->data[out],
+		 VB->ColorPtr[1]->data[in] );
+
+      if (VB->SecondaryColorPtr[1]) {
+	 INTERP_3F( t,
+		    VB->SecondaryColorPtr[1]->data[dst],
+		    VB->SecondaryColorPtr[1]->data[out],
+		    VB->SecondaryColorPtr[1]->data[in] );
+      }
+   }
+   else if (VB->IndexPtr[1]) {
+      VB->IndexPtr[1]->data[dst][0] = LINTERP( t,
+					       VB->IndexPtr[1]->data[out][0],
+					       VB->IndexPtr[1]->data[in][0] );
+   }
+
+   if (VB->EdgeFlag) {
+      VB->EdgeFlag[dst] = VB->EdgeFlag[out] || force_boundary;
+   }
+
+   generic_interp(ctx, t, dst, out, in, force_boundary);
+}
+
+static void generic_copy_pv_extras( GLcontext *ctx, 
+				    GLuint dst, GLuint src )
+{
+   struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
+
+   if (VB->ColorPtr[1]) {
+      COPY_4FV( VB->ColorPtr[1]->data[dst], 
+		VB->ColorPtr[1]->data[src] );
+
+      if (VB->SecondaryColorPtr[1]) {
+	 COPY_4FV( VB->SecondaryColorPtr[1]->data[dst], 
+		   VB->SecondaryColorPtr[1]->data[src] );
+      }
+   }
+   else if (VB->IndexPtr[1]) {
+      VB->IndexPtr[1]->data[dst][0] = VB->IndexPtr[1]->data[src][0];
+   }
+
+   generic_copy_pv(ctx, dst, src);
+}
+
+
+
+
+/***********************************************************************
+ * Build codegen functions or return generic ones:
+ */
+
+
+static void do_emit( GLcontext *ctx, GLuint start, GLuint end,
+		     void *dest)
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   struct vertex_buffer *VB = &tnl->vb;
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   struct tnl_clipspace_attr *a = vtx->attr;
+   const GLuint count = vtx->attr_count;
+   GLuint j;
+
+   for (j = 0; j < count; j++) {
+      GLvector4f *vptr = VB->AttribPtr[a[j].attrib];
+      a[j].inputstride = vptr->stride;
+      a[j].inputptr = ((GLubyte *)vptr->data) + start * vptr->stride;
+      a[j].emit = a[j].insert[vptr->size - 1];
+   }
+
+   vtx->emit = 0;
+   
+   if (0) 
+      vtx->emit = _tnl_codegen_emit(ctx);
+   
+   if (!vtx->emit)
+      vtx->emit = generic_emit;
+
+   vtx->emit( ctx, start, end, dest );
+}
+
+
+
+static void choose_interp_func( GLcontext *ctx,
+				GLfloat t,
+				GLuint edst, GLuint eout, GLuint ein,
+				GLboolean force_boundary )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+
+   if (vtx->need_extras && 
+       (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) {
+      vtx->interp = generic_interp_extras;
+   } else {
+      vtx->interp = generic_interp;
+   }
+
+   vtx->interp( ctx, t, edst, eout, ein, force_boundary );
+}
+
+
+static void choose_copy_pv_func(  GLcontext *ctx, GLuint edst, GLuint esrc )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+
+   if (vtx->need_extras && 
+       (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) {
+      vtx->copy_pv = generic_copy_pv_extras;
+   } else {
+      vtx->copy_pv = generic_copy_pv;
+   }
+
+   vtx->copy_pv( ctx, edst, esrc );
+}
+
+
+/***********************************************************************
+ * Public entrypoints, mostly dispatch to the above:
+ */
+
+
+/* Interpolate between two vertices to produce a third:
+ */
+void _tnl_interp( GLcontext *ctx,
+		  GLfloat t,
+		  GLuint edst, GLuint eout, GLuint ein,
+		  GLboolean force_boundary )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   vtx->interp( ctx, t, edst, eout, ein, force_boundary );
+}
+
+/* Copy colors from one vertex to another:
+ */
+void _tnl_copy_pv(  GLcontext *ctx, GLuint edst, GLuint esrc )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   vtx->copy_pv( ctx, edst, esrc );
+}
+
+
+/* Extract a named attribute from a hardware vertex.  Will have to
+ * reverse any viewport transformation, swizzling or other conversions
+ * which may have been applied:
+ */
+void _tnl_get_attr( GLcontext *ctx, const void *vin,
+			      GLenum attr, GLfloat *dest )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   const struct tnl_clipspace_attr *a = vtx->attr;
+   const GLuint attr_count = vtx->attr_count;
+   GLuint j;
+
+   for (j = 0; j < attr_count; j++) {
+      if (a[j].attrib == attr) {
+	 a[j].extract( &a[j], dest, (GLubyte *)vin + a[j].vertoffset );
+	 return;
+      }
+   }
+
+   /* Else return the value from ctx->Current -- dangerous???
+    */
+   _mesa_memcpy( dest, ctx->Current.Attrib[attr], 4*sizeof(GLfloat));
+}
+
+
+/* Complementary operation to the above.
+ */
+void _tnl_set_attr( GLcontext *ctx, void *vout,
+		    GLenum attr, const GLfloat *src )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   const struct tnl_clipspace_attr *a = vtx->attr;
+   const GLuint attr_count = vtx->attr_count;
+   GLuint j;
+
+   for (j = 0; j < attr_count; j++) {
+      if (a[j].attrib == attr) {
+	 a[j].insert[4-1]( &a[j], (GLubyte *)vout + a[j].vertoffset, src );
+	 return;
+      }
+   }
+}
+
+
+void *_tnl_get_vertex( GLcontext *ctx, GLuint nr )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+
+   return vtx->vertex_buf + nr * vtx->vertex_size;
+}
+
+void _tnl_invalidate_vertex_state( GLcontext *ctx, GLuint new_state )
+{
+   if (new_state & (_DD_NEW_TRI_LIGHT_TWOSIDE|_DD_NEW_TRI_UNFILLED) ) {
+      struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+      vtx->new_inputs = ~0;
+      vtx->interp = choose_interp_func;
+      vtx->copy_pv = choose_copy_pv_func;
+   }
+}
+
+
+GLuint _tnl_install_attrs( GLcontext *ctx, const struct tnl_attr_map *map,
+			   GLuint nr, const GLfloat *vp, 
+			   GLuint unpacked_size )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   GLuint offset = 0;
+   GLuint i, j;
+
+   assert(nr < _TNL_ATTRIB_MAX);
+   assert(nr == 0 || map[0].attrib == VERT_ATTRIB_POS);
+
+   vtx->emit = 0;
+   vtx->interp = choose_interp_func;
+   vtx->copy_pv = choose_copy_pv_func;
+   vtx->new_inputs = ~0;
+
+   for (j = 0, i = 0; i < nr; i++) {
+      const GLuint format = map[i].format;
+      if (format == EMIT_PAD) {
+         /*
+ 	 fprintf(stderr, "%d: pad %d, offset %d\n", i,  
+ 		 map[i].offset, offset);  
+         */
+	 offset += map[i].offset;
+
+      }
+      else {
+	 vtx->attr[j].attrib = map[i].attrib;
+	 vtx->attr[j].format = format;
+	 vtx->attr[j].vp = vp;
+	 vtx->attr[j].insert = format_info[format].insert;
+	 vtx->attr[j].extract = format_info[format].extract;
+	 vtx->attr[j].vertattrsize = format_info[format].attrsize;
+
+	 if (unpacked_size) 
+	    vtx->attr[j].vertoffset = map[i].offset;
+	 else
+	    vtx->attr[j].vertoffset = offset;
+	 
+         /*
+ 	 fprintf(stderr, "%d: %s, vp %p, offset %d\n", i,  
+ 		 format_info[format].name, (void *)vp,
+		 vtx->attr[j].vertoffset);   
+         */
+	 offset += format_info[format].attrsize;
+	 j++;
+      }
+   }
+
+   vtx->attr_count = j;
+
+   if (unpacked_size)
+      vtx->vertex_size = unpacked_size;
+   else
+      vtx->vertex_size = offset;
+
+   assert(vtx->vertex_size <= vtx->max_vertex_size);
+   
+   return vtx->vertex_size;
+}
+
+
+
+void _tnl_invalidate_vertices( GLcontext *ctx, GLuint newinputs )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   vtx->new_inputs |= newinputs;
+}
+
+
+void _tnl_build_vertices( GLcontext *ctx,
+			  GLuint start,
+			  GLuint end,
+			  GLuint newinputs )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   const GLuint stride = vtx->vertex_size;
+   GLubyte *vDest = ((GLubyte *)vtx->vertex_buf + (start*stride));
+
+   newinputs |= vtx->new_inputs;
+   vtx->new_inputs = 0;
+
+   if (newinputs) 
+      do_emit( ctx, start, end, vDest );
+}
+
+
+void *_tnl_emit_vertices_to_buffer( GLcontext *ctx,
+				    GLuint start,
+				    GLuint end,
+				    void *dest )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   do_emit( ctx, start, end, dest );
+   return (void *)((GLubyte *)dest + vtx->vertex_size * (end - start));
+}
+
+
+void _tnl_init_vertices( GLcontext *ctx, 
+			GLuint vb_size,
+			GLuint max_vertex_size )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);  
+
+   _tnl_install_attrs( ctx, 0, 0, 0, 0 );
+
+   vtx->need_extras = GL_TRUE;
+   if (max_vertex_size > vtx->max_vertex_size) {
+      _tnl_free_vertices( ctx );
+      vtx->max_vertex_size = max_vertex_size;
+      vtx->vertex_buf = (GLubyte *)ALIGN_CALLOC(vb_size * max_vertex_size, 32 );
+   }
+
+   _tnl_init_c_codegen( &vtx->codegen );
+}
+
+
+void _tnl_free_vertices( GLcontext *ctx )
+{
+   struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+   if (vtx->vertex_buf) {
+      ALIGN_FREE(vtx->vertex_buf);
+      vtx->vertex_buf = 0;
+      if (vtx->codegen.buf) {
+         _mesa_free(vtx->codegen.buf);
+         vtx->codegen.buf = NULL;
+      }
+   }
+}