t_vertex_generic.c

winNT技术操作系统,国外开放的原代码和LIUX一样

/*
 * 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 <[e-mail]>
 */

#include "glheader.h"
#include "context.h"
#include "colormac.h"
#include "t_context.h"
#include "t_vertex.h"
#include "simple_list.h"



/*
 * These functions take the NDC coordinates pointed to by 'in', apply the
 * NDC->Viewport mapping and store the results at 'v'.
 */

static INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE void insert_3f_xyw_err( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
   (void) a; (void) v; (void) in;
   abort();
}

static INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE void insert_null( const struct tnl_clipspace_attr *a, GLubyte *v, const GLfloat *in )
{
   (void) a; (void) v; (void) in;
}

static INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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 INLINE 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;
}