/* $Id: x86.c,v 1.8 2000/06/27 22:10:01 brianp Exp $ */

/*
 * Mesa 3-D graphics library
 * Version:  3.1
 * 
 * Copyright (C) 1999  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.
 */

/*
 * Intel x86 assembly code by Josh Vanderhoof
 */


#include "glheader.h"
#include "context.h"
#include "types.h"
#include "vertices.h"
#include "xform.h"
#include "x86.h"

#ifdef USE_X86_ASM
extern void _ASMAPI gl_v16_x86_cliptest_points4( GLfloat *first_vert,
					GLfloat *last_vert,
					GLubyte *or_mask,
					GLubyte *and_mask,
					GLubyte *clip_mask );

  
extern void _ASMAPI gl_v16_x86_general_xform( GLfloat *dest,
				     const GLfloat *m,
				     const GLfloat *src,
				     GLuint src_stride,
					      GLuint count );
#endif


#define XFORM_ARGS 	GLvector4f *to_vec, 		\
			const GLfloat m[16], 		\
			const GLvector4f *from_vec, 	\
			const GLubyte *mask, 		\
			const GLubyte flag

#define DECLARE_XFORM_GROUP(pfx, vsize, masked) \
 extern void _ASMAPI gl_##pfx##_transform_points##vsize##_general_##masked(XFORM_ARGS);     \
 extern void _ASMAPI gl_##pfx##_transform_points##vsize##_identity_##masked(XFORM_ARGS);    \
 extern void _ASMAPI gl_##pfx##_transform_points##vsize##_3d_no_rot_##masked(XFORM_ARGS);   \
 extern void _ASMAPI gl_##pfx##_transform_points##vsize##_perspective_##masked(XFORM_ARGS);     \
 extern void _ASMAPI gl_##pfx##_transform_points##vsize##_2d_##masked(XFORM_ARGS);      \
 extern void _ASMAPI gl_##pfx##_transform_points##vsize##_2d_no_rot_##masked(XFORM_ARGS);   \
 extern void _ASMAPI gl_##pfx##_transform_points##vsize##_3d_##masked(XFORM_ARGS);

#define ASSIGN_XFORM_GROUP( pfx, cma, vsize, masked ) 		\
 gl_transform_tab[cma][vsize][MATRIX_GENERAL] 			\
  = gl_##pfx##_transform_points##vsize##_general_##masked; 	\
 gl_transform_tab[cma][vsize][MATRIX_IDENTITY] 			\
  = gl_##pfx##_transform_points##vsize##_identity_##masked; 	\
 gl_transform_tab[cma][vsize][MATRIX_3D_NO_ROT] 		\
  = gl_##pfx##_transform_points##vsize##_3d_no_rot_##masked; 	\
 gl_transform_tab[cma][vsize][MATRIX_PERSPECTIVE] 		\
  = gl_##pfx##_transform_points##vsize##_perspective_##masked; 	\
 gl_transform_tab[cma][vsize][MATRIX_2D] 			\
  = gl_##pfx##_transform_points##vsize##_2d_##masked; 		\
 gl_transform_tab[cma][vsize][MATRIX_2D_NO_ROT] 		\
  = gl_##pfx##_transform_points##vsize##_2d_no_rot_##masked; 	\
 gl_transform_tab[cma][vsize][MATRIX_3D] 			\
  = gl_##pfx##_transform_points##vsize##_3d_##masked;


#ifdef USE_X86_ASM
   DECLARE_XFORM_GROUP( x86, 2, raw )
   DECLARE_XFORM_GROUP( x86, 3, raw )
   DECLARE_XFORM_GROUP( x86, 4, raw )
   DECLARE_XFORM_GROUP( x86, 2, masked )
   DECLARE_XFORM_GROUP( x86, 3, masked )
   DECLARE_XFORM_GROUP( x86, 4, masked )

   extern GLvector4f  * _ASMAPI gl_x86_cliptest_points4( GLvector4f *clip_vec, 
                                               GLvector4f *proj_vec, 
                                               GLubyte clipMask[],
                                               GLubyte *orMask, 
                                               GLubyte *andMask );
#endif


void gl_init_x86_asm_transforms( void )
{
#ifdef USE_X86_ASM
   ASSIGN_XFORM_GROUP( x86, 0, 2, raw )
   ASSIGN_XFORM_GROUP( x86, 0, 3, raw )
   ASSIGN_XFORM_GROUP( x86, 0, 4, raw )

   ASSIGN_XFORM_GROUP( x86, CULL_MASK_ACTIVE, 2, masked )
   ASSIGN_XFORM_GROUP( x86, CULL_MASK_ACTIVE, 3, masked )
   ASSIGN_XFORM_GROUP( x86, CULL_MASK_ACTIVE, 4, masked )

   /* XXX this function has been found to cause FP overflow exceptions */
   gl_clip_tab[4] = gl_x86_cliptest_points4;

#ifdef DEBUG
   gl_test_all_transform_functions("x86");
#endif

   gl_cliptest_points4_v16 = gl_v16_x86_cliptest_points4;
   gl_xform_points3_v16_general = gl_v16_x86_general_xform;
#endif
}