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/* $Id: t_dd_imm_primtmp.h,v 1.1 2003-02-28 11:54:02 pj Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
*
* Copyright (C) 1999-2001 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.
*
* Authors:
* Keith Whitwell <keithw@valinux.com>
* Gareth Hughes <gareth@valinux.com>
*/
/* Template for immediate mode vertices.
*
* Probably instantiate once for each vertex format used:
* - TINY_VERTICES
* - TEX0_VERTICES
* - TEX1_VERTICES
* - PTEX_VERTICES
*
* Have to handle TEX->PTEX transition somehow.
*/
#define DBG 0
/* =============================================================
* GL_POINTS
*/
static void TAG(flush_point_0)( GLcontext *ctx, TNL_VERTEX *v0 )
{
if ( !v0->mask ) {
LOCAL_VARS;
DRAW_POINT( v0 );
}
}
/* =============================================================
* GL_LINES
*/
static void TAG(flush_line_1)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_line_0)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
FLUSH_VERTEX = TAG(flush_line_1);
ACTIVE_VERTEX = IMM_VERTICES( 1 );
}
static void TAG(flush_line_1)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
TNL_VERTEX *v1 = v0 - 1;
ACTIVE_VERTEX = IMM_VERTICES( 0 );
FLUSH_VERTEX = TAG(flush_line_0);
if (FALLBACK_OR_CLIPPING)
CLIP_OR_DRAW_LINE( ctx, v1, v0 );
else
DRAW_LINE( ctx, v1, v0 );
}
/* =============================================================
* GL_LINE_LOOP
*/
static void TAG(flush_line_loop_2)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_line_loop_1)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_line_loop_0)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = v0 + 1;
FLUSH_VERTEX = TAG(flush_line_loop_1);
}
#define DRAW_LINELOOP_LINE( a, b ) \
if (!HAVE_LINE_STRIP || FALLBACK_OR_CLIPPING) { \
CLIP_OR_DRAW_LINE( ctx, a, b ); \
} else if (EXTEND_PRIM( 1 )) { \
EMIT_VERTEX( b ); \
} else { \
BEGIN_PRIM( GL_LINE_STRIP, 2 ); \
EMIT_VERTEX( a ); \
EMIT_VERTEX( b ); \
}
static void TAG(flush_line_loop_1)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
TNL_VERTEX *v1 = v0 - 1;
ACTIVE_VERTEX = v1;
FLUSH_VERTEX = TAG(flush_line_loop_2);
DRAW_LINELOOP_LINE( v1, v0 );
}
static void TAG(flush_line_loop_2)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
TNL_VERTEX *v1 = v0 + 1;
ACTIVE_VERTEX = v1;
FLUSH_VERTEX = TAG(flush_line_loop_1);
DRAW_LINELOOP_LINE( v1, v0 );
}
static void TAG(end_line_loop)( GLcontext *ctx )
{
LOCAL_VARS;
if ( FLUSH_VERTEX != TAG(flush_line_loop_0) ) {
TNL_VERTEX *v1 = ACTIVE_VERTEX;
TNL_VERTEX *v0 = IMM_VERTICES( 0 );
DRAW_LINELOOP_LINE( v1, v0 );
}
}
/* =============================================================
* GL_LINE_STRIP
*/
static void TAG(flush_line_strip_2)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_line_strip_1)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_line_strip_0)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = v0 + 1;
FLUSH_VERTEX = TAG(flush_line_strip_0b);
}
static void TAG(flush_line_strip_1)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
TNL_VERTEX *v1 = v0 - 1;
ACTIVE_VERTEX = v1;
FLUSH_VERTEX = TAG(flush_line_strip_2);
if (!HAVE_LINE_STRIP || FALLBACK_OR_CLIPPING)
CLIP_OR_DRAW_LINE( ctx, v1, v0 );
else if (EXTEND_PRIM( 1 )) {
EMIT_VERTEX( v0 );
} else {
BEGIN_PRIM( GL_LINE_STRIP, 2 );
EMIT_VERTEX( v1 );
EMIT_VERTEX( v0 );
}
}
static void TAG(flush_line_strip_2)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
TNL_VERTEX *v1 = v0 + 1;
ACTIVE_VERTEX = v1;
FLUSH_VERTEX = TAG(flush_line_strip_1);
if (!HAVE_LINE_STRIP || FALLBACK_OR_CLIPPING)
CLIP_OR_DRAW_LINE( ctx, v1, v0 );
else if (EXTEND_PRIM( 1 )) {
EMIT_VERTEX( v0 );
} else {
BEGIN_PRIM( GL_LINE_STRIP, 2 );
EMIT_VERTEX( v1 );
EMIT_VERTEX( v0 );
}
}
/* =============================================================
* GL_TRIANGLES
*/
static void TAG(flush_triangle_2)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_triangle_1)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_triangle_0)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
if ( DBG ) fprintf( stderr, __FUNCTION__ "\n" );
ACTIVE_VERTEX = v0 + 1;
FLUSH_VERTEX = TAG(flush_triangle_1);
BEGIN_PRIM( GL_TRIANGLES, 0 );
}
static void TAG(flush_triangle_1)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
if ( DBG ) fprintf( stderr, __FUNCTION__ "\n" );
ACTIVE_VERTEX = v0 + 1;
FLUSH_VERTEX = TAG(flush_triangle_2);
}
static void TAG(flush_triangle_2)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
TNL_VERTEX *v2 = v0 - 2;
TNL_VERTEX *v1 = v0 - 1;
if ( DBG ) fprintf( stderr, __FUNCTION__ "\n" );
ACTIVE_VERTEX = v2;
FLUSH_VERTEX = TAG(flush_triangle_0);
/* nothing gained by trying to emit as hw primitives -- that
* happens normally in this case.
*/
if (FALLBACK_OR_CLIPPING)
CLIP_OR_DRAW_TRI( ctx, v2, v1, v0 );
else
DRAW_TRI( ctx, v2, v1, v0 );
}
/* =============================================================
* GL_TRIANGLE_STRIP
*/
static void TAG(flush_tri_strip_3)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_tri_strip_2)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_tri_strip_1)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_tri_strip_0)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = IMM_VERTICES( 1 );
FLUSH_VERTEX = TAG(flush_tri_strip_1);
}
static void TAG(flush_tri_strip_1)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = IMM_VERTICES( 2 );
FLUSH_VERTEX = TAG(flush_tri_strip_2);
}
#define DO_TRISTRIP_TRI( vert0, vert1 ) \
if (!HAVE_TRI_STRIP || FALLBACK_OR_CLIPPING) { \
TNL_VERTEX *v2 = IMM_VERTICES( vert0 ); \
TNL_VERTEX *v1 = IMM_VERTICES( vert1 ); \
TAG(draw_tri)( ctx, v2, v1, v0 ); \
} else if (EXTEND_PRIM( 1 )) { \
EMIT_VERTEX( v0 ); \
} else { \
TNL_VERTEX *v2 = IMM_VERTICES( vert0 ); \
TNL_VERTEX *v1 = IMM_VERTICES( vert1 ); \
BEGIN_PRIM( GL_TRIANGLE_STRIP, 3 ); \
EMIT_VERTEX( v2 ); \
EMIT_VERTEX( v1 ); \
EMIT_VERTEX( v0 ); \
}
static void TAG(flush_tri_strip_2)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
FLUSH_VERTEX = TAG(flush_tri_strip_3);
ACTIVE_VERTEX = IMM_VERTICES( 3 );
DO_TRISTRIP_TRI( 0, 1 );
}
static void TAG(flush_tri_strip_3)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
FLUSH_VERTEX = TAG(flush_tri_strip_4);
ACTIVE_VERTEX = IMM_VERTICES( 0 );
DO_TRISTRIP_TRI( 1, 2 );
}
static void TAG(flush_tri_strip_4)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
FLUSH_VERTEX = TAG(flush_tri_strip_5);
ACTIVE_VERTEX = IMM_VERTICES( 1 );
DO_TRISTRIP_TRI( 2, 3 );
}
static void TAG(flush_tri_strip_5)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
FLUSH_VERTEX = TAG(flush_tri_strip_2);
ACTIVE_VERTEX = IMM_VERTICES( 2 );
DO_TRISTRIP_TRI( 0, 3 );
}
/* =============================================================
* GL_TRIANGLE_FAN
*/
static void TAG(flush_tri_fan_2)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_tri_fan_1)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_tri_fan_0)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = v0 + 1;
FLUSH_VERTEX = TAG(flush_tri_fan_1);
}
static void TAG(flush_tri_fan_1)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = v0 + 1;
FLUSH_VERTEX = TAG(flush_tri_fan_2);
}
#define DO_TRIFAN_TRI( vert0, vert1 ) \
if (!HAVE_TRI_FAN || FALLBACK_OR_CLIPPING) { \
TNL_VERTEX *v2 = IMM_VERTICES( vert0 ); \
TNL_VERTEX *v1 = IMM_VERTICES( vert1 ); \
TAG(draw_tri)( ctx, v2, v1, v0 ); \
} else if (EXTEND_PRIM( 1 )) { \
EMIT_VERTEX( v0 ); \
} else { \
TNL_VERTEX *v2 = IMM_VERTICES( vert0 ); \
TNL_VERTEX *v1 = IMM_VERTICES( vert1 ); \
BEGIN_PRIM( GL_TRIANGLE_FAN, 3 ); \
EMIT_VERTEX( v2 ); \
EMIT_VERTEX( v1 ); \
EMIT_VERTEX( v0 ); \
}
static void TAG(flush_tri_fan_2)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = IMM_VERTICES( 1 );
FLUSH_VERTEX = TAG(flush_tri_fan_3 );
DO_TRIFAN_TRI( 0, 1 );
}
static void TAG(flush_tri_fan_3)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = IMM_VERTICES( 2 );
FLUSH_VERTEX = TAG(flush_tri_fan_2 );
DO_TRIFAN_TRI( 0, 2 );
}
/* =============================================================
* GL_QUADS
*/
static void TAG(flush_quad_3)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_quad_2)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_quad_1)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_quad_0)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
IMM_VERTEX( v0 ) = v0 + 1;
FLUSH_VERTEX = TAG(flush_quad_1);
}
static void TAG(flush_quad_1)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
IMM_VERTEX( v0 ) = v0 + 1;
FLUSH_VERTEX = TAG(flush_quad_2);
}
static void TAG(flush_quad_2)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
IMM_VERTEX( v0 ) = v0 + 1;
FLUSH_VERTEX = TAG(flush_quad_3);
}
static void TAG(flush_quad_3)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
TNL_VERTEX *v3 = v0 - 3;
TNL_VERTEX *v2 = v0 - 2;
TNL_VERTEX *v1 = v0 - 1;
IMM_VERTEX( v0 ) = v3;
FLUSH_VERTEX = TAG(flush_quad_0);
if (!HAVE_HW_QUADS || FALLBACK_OR_CLIPPING) {
CLIP_OR_DRAW_TRI( ctx, v3, v2, v0 );
CLIP_OR_DRAW_TRI( ctx, v2, v1, v0 );
} else {
EXTEND_PRIM_NF( GL_QUADS, 4 );
EMIT_VERTEX( v3 );
EMIT_VERTEX( v2 );
EMIT_VERTEX( v1 );
EMIT_VERTEX( v0 );
}
}
/* =============================================================
* GL_QUAD_STRIP
*/
static void TAG(flush_quad_strip_3)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_quad_strip_2)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_quad_strip_1)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_quad_strip_0)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
IMM_VERTEX( v3 ) = v0;
IMM_VERTEX( v0 ) = v0 + 1;
FLUSH_VERTEX = TAG(flush_quad_strip_1);
}
static void TAG(flush_quad_strip_1)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
IMM_VERTEX( v2 ) = v0;
IMM_VERTEX( v0 ) = v0 + 1;
FLUSH_VERTEX = TAG(flush_quad_strip_2);
}
static void TAG(flush_quad_strip_2)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
IMM_VERTEX( v1 ) = v0;
IMM_VERTEX( v0 ) = v0 + 1;
FLUSH_VERTEX = TAG(flush_quad_strip_3);
}
static void TAG(flush_quad_strip_3)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
TNL_VERTEX *v3 = IMM_VERTEX( v3 );
TNL_VERTEX *v2 = IMM_VERTEX( v2 );
TNL_VERTEX *v1 = IMM_VERTEX( v1 );
IMM_VERTEX( v0 ) = v3;
IMM_VERTEX( v2 ) = v0;
IMM_VERTEX( v3 ) = v1;
FLUSH_VERTEX = TAG(flush_quad_strip_2);
if (FALLBACK_OR_CLIPPING) {
CLIP_OR_DRAW_TRI( ctx, v3, v2, v0 );
CLIP_OR_DRAW_TRI( ctx, v2, v1, v0 );
} else {
DRAW_TRI( ctx, v3, v2, v0 );
DRAW_TRI( ctx, v2, v1, v0 );
}
}
/* =============================================================
* GL_POLYGON
*/
static void TAG(flush_poly_2)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_poly_1)( GLcontext *ctx, TNL_VERTEX *v0 );
static void TAG(flush_poly_0)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = IMM_VERTICES( 1 );
FLUSH_VERTEX = TAG(flush_poly_1);
}
static void TAG(flush_poly_1)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = IMM_VERTICES( 2 );
FLUSH_VERTEX = TAG(flush_poly_2);
}
#define DO_POLY_TRI( vert0, vert1 ) \
if (!HAVE_POLYGONS || FALLBACK_OR_CLIPPING) { \
TNL_VERTEX *v2 = IMM_VERTICES( vert0 ); \
TNL_VERTEX *v1 = IMM_VERTICES( vert1 ); \
TAG(draw_tri)( ctx, v1, v0, v2 ); \
} else if (EXTEND_PRIM( 1 )) { \
EMIT_VERTEX( v0 ); \
} else { \
TNL_VERTEX *v2 = IMM_VERTICES( vert0 ); \
TNL_VERTEX *v1 = IMM_VERTICES( vert1 ); \
BEGIN_PRIM( GL_POLYGON, 3 ); \
EMIT_VERTEX( v2 ); \
EMIT_VERTEX( v1 ); \
EMIT_VERTEX( v0 ); \
}
static void TAG(flush_poly_2)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = IMM_VERTICES( 1 );
FLUSH_VERTEX = TAG(flush_poly_3);
DO_POLY_TRI( 0, 1 );
}
static void TAG(flush_poly_3)( GLcontext *ctx, TNL_VERTEX *v0 )
{
LOCAL_VARS;
ACTIVE_VERTEX = IMM_VERTICES( 2 );
FLUSH_VERTEX = TAG(flush_poly_2);
DO_POLY_TRI( 0, 2 );
}
void (*TAG(flush_tab)[GL_POLYGON+1])( GLcontext *, TNL_VERTEX * ) =
{
TAG(flush_point),
TAG(flush_line_0),
TAG(flush_line_loop_0),
TAG(flush_line_strip_0),
TAG(flush_triangle_0),
TAG(flush_tri_strip_0),
TAG(flush_tri_fan_0),
TAG(flush_quad_0),
TAG(flush_quad_strip_0),
TAG(flush_poly_0),
};
#ifndef PRESERVE_PRIM_DEFS
#undef LOCAL_VARS
#undef GET_INTERP_FUNC
#undef IMM_VERTEX
#undef IMM_VERTICES
#undef FLUSH_VERTEX
#endif
#undef PRESERVE_PRIM_DEFS
#undef EXTEND_PRIM
#undef EMIT_VERTEX
#undef EMIT_VERTEX_TRI
#undef EMIT_VERTEX_LINE
#undef EMIT_VERTEX_POINT
#undef TAG