0,0 → 1,570 |
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/* |
* 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 |
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|
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/* ============================================================= |
* GL_POINTS |
*/ |
|
static void TAG(flush_point_0)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
if ( !v0->mask ) { |
LOCAL_VARS; |
DRAW_POINT( v0 ); |
} |
} |
|
|
/* ============================================================= |
* GL_LINES |
*/ |
|
static void TAG(flush_line_1)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
|
static void TAG(flush_line_0)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
FLUSH_VERTEX = TAG(flush_line_1); |
ACTIVE_VERTEX = IMM_VERTICES( 1 ); |
} |
|
static void TAG(flush_line_1)( struct gl_context *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)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
static void TAG(flush_line_loop_1)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
|
static void TAG(flush_line_loop_0)( struct gl_context *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)( struct gl_context *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)( struct gl_context *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)( struct gl_context *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 ); |
} |
} |
|
|
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/* ============================================================= |
* GL_LINE_STRIP |
*/ |
|
static void TAG(flush_line_strip_2)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
static void TAG(flush_line_strip_1)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
|
static void TAG(flush_line_strip_0)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
|
ACTIVE_VERTEX = v0 + 1; |
FLUSH_VERTEX = TAG(flush_line_strip_0b); |
} |
|
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static void TAG(flush_line_strip_1)( struct gl_context *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 ); |
} |
} |
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static void TAG(flush_line_strip_2)( struct gl_context *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 ); |
} |
} |
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|
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/* ============================================================= |
* GL_TRIANGLES |
*/ |
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static void TAG(flush_triangle_2)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
static void TAG(flush_triangle_1)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
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static void TAG(flush_triangle_0)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
|
if ( DBG ) fprintf( stderr, __FUNCTION__ "\n" ); |
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ACTIVE_VERTEX = v0 + 1; |
FLUSH_VERTEX = TAG(flush_triangle_1); |
BEGIN_PRIM( GL_TRIANGLES, 0 ); |
} |
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static void TAG(flush_triangle_1)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
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if ( DBG ) fprintf( stderr, __FUNCTION__ "\n" ); |
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ACTIVE_VERTEX = v0 + 1; |
FLUSH_VERTEX = TAG(flush_triangle_2); |
} |
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static void TAG(flush_triangle_2)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
TNL_VERTEX *v2 = v0 - 2; |
TNL_VERTEX *v1 = v0 - 1; |
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if ( DBG ) fprintf( stderr, __FUNCTION__ "\n" ); |
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ACTIVE_VERTEX = v2; |
FLUSH_VERTEX = TAG(flush_triangle_0); |
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/* 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 ); |
} |
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|
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/* ============================================================= |
* GL_TRIANGLE_STRIP |
*/ |
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static void TAG(flush_tri_strip_3)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
static void TAG(flush_tri_strip_2)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
static void TAG(flush_tri_strip_1)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
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static void TAG(flush_tri_strip_0)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
ACTIVE_VERTEX = IMM_VERTICES( 1 ); |
FLUSH_VERTEX = TAG(flush_tri_strip_1); |
} |
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static void TAG(flush_tri_strip_1)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
ACTIVE_VERTEX = IMM_VERTICES( 2 ); |
FLUSH_VERTEX = TAG(flush_tri_strip_2); |
} |
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#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 ); \ |
} |
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static void TAG(flush_tri_strip_2)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
FLUSH_VERTEX = TAG(flush_tri_strip_3); |
ACTIVE_VERTEX = IMM_VERTICES( 3 ); |
DO_TRISTRIP_TRI( 0, 1 ); |
} |
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static void TAG(flush_tri_strip_3)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
FLUSH_VERTEX = TAG(flush_tri_strip_4); |
ACTIVE_VERTEX = IMM_VERTICES( 0 ); |
DO_TRISTRIP_TRI( 1, 2 ); |
} |
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static void TAG(flush_tri_strip_4)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
FLUSH_VERTEX = TAG(flush_tri_strip_5); |
ACTIVE_VERTEX = IMM_VERTICES( 1 ); |
DO_TRISTRIP_TRI( 2, 3 ); |
} |
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static void TAG(flush_tri_strip_5)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
FLUSH_VERTEX = TAG(flush_tri_strip_2); |
ACTIVE_VERTEX = IMM_VERTICES( 2 ); |
DO_TRISTRIP_TRI( 0, 3 ); |
} |
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/* ============================================================= |
* GL_TRIANGLE_FAN |
*/ |
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static void TAG(flush_tri_fan_2)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
static void TAG(flush_tri_fan_1)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
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static void TAG(flush_tri_fan_0)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
|
ACTIVE_VERTEX = v0 + 1; |
FLUSH_VERTEX = TAG(flush_tri_fan_1); |
} |
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static void TAG(flush_tri_fan_1)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
|
ACTIVE_VERTEX = v0 + 1; |
FLUSH_VERTEX = TAG(flush_tri_fan_2); |
} |
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#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 ); \ |
} |
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static void TAG(flush_tri_fan_2)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
ACTIVE_VERTEX = IMM_VERTICES( 1 ); |
FLUSH_VERTEX = TAG(flush_tri_fan_3 ); |
DO_TRIFAN_TRI( 0, 1 ); |
} |
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static void TAG(flush_tri_fan_3)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
ACTIVE_VERTEX = IMM_VERTICES( 2 ); |
FLUSH_VERTEX = TAG(flush_tri_fan_2 ); |
DO_TRIFAN_TRI( 0, 2 ); |
} |
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/* ============================================================= |
* GL_QUADS |
*/ |
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static void TAG(flush_quad_3)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
static void TAG(flush_quad_2)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
static void TAG(flush_quad_1)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
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static void TAG(flush_quad_0)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
IMM_VERTEX( v0 ) = v0 + 1; |
FLUSH_VERTEX = TAG(flush_quad_1); |
} |
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static void TAG(flush_quad_1)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
IMM_VERTEX( v0 ) = v0 + 1; |
FLUSH_VERTEX = TAG(flush_quad_2); |
} |
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static void TAG(flush_quad_2)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
IMM_VERTEX( v0 ) = v0 + 1; |
FLUSH_VERTEX = TAG(flush_quad_3); |
} |
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static void TAG(flush_quad_3)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
TNL_VERTEX *v3 = v0 - 3; |
TNL_VERTEX *v2 = v0 - 2; |
TNL_VERTEX *v1 = v0 - 1; |
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IMM_VERTEX( v0 ) = v3; |
FLUSH_VERTEX = TAG(flush_quad_0); |
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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 ); |
} |
} |
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|
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/* ============================================================= |
* GL_QUAD_STRIP |
*/ |
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static void TAG(flush_quad_strip_3)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
static void TAG(flush_quad_strip_2)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
static void TAG(flush_quad_strip_1)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
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static void TAG(flush_quad_strip_0)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
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IMM_VERTEX( v3 ) = v0; |
IMM_VERTEX( v0 ) = v0 + 1; |
FLUSH_VERTEX = TAG(flush_quad_strip_1); |
} |
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static void TAG(flush_quad_strip_1)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
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IMM_VERTEX( v2 ) = v0; |
IMM_VERTEX( v0 ) = v0 + 1; |
FLUSH_VERTEX = TAG(flush_quad_strip_2); |
} |
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static void TAG(flush_quad_strip_2)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
|
IMM_VERTEX( v1 ) = v0; |
IMM_VERTEX( v0 ) = v0 + 1; |
FLUSH_VERTEX = TAG(flush_quad_strip_3); |
} |
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static void TAG(flush_quad_strip_3)( struct gl_context *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); |
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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 ); |
} |
} |
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|
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/* ============================================================= |
* GL_POLYGON |
*/ |
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static void TAG(flush_poly_2)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
static void TAG(flush_poly_1)( struct gl_context *ctx, TNL_VERTEX *v0 ); |
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static void TAG(flush_poly_0)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
ACTIVE_VERTEX = IMM_VERTICES( 1 ); |
FLUSH_VERTEX = TAG(flush_poly_1); |
} |
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static void TAG(flush_poly_1)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
ACTIVE_VERTEX = IMM_VERTICES( 2 ); |
FLUSH_VERTEX = TAG(flush_poly_2); |
} |
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#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 ); \ |
} |
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static void TAG(flush_poly_2)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
ACTIVE_VERTEX = IMM_VERTICES( 1 ); |
FLUSH_VERTEX = TAG(flush_poly_3); |
DO_POLY_TRI( 0, 1 ); |
} |
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static void TAG(flush_poly_3)( struct gl_context *ctx, TNL_VERTEX *v0 ) |
{ |
LOCAL_VARS; |
ACTIVE_VERTEX = IMM_VERTICES( 2 ); |
FLUSH_VERTEX = TAG(flush_poly_2); |
DO_POLY_TRI( 0, 2 ); |
} |
|
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void (*TAG(flush_tab)[GL_POLYGON+1])( struct gl_context *, 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), |
}; |
|
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#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 |