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https://github.com/reactos/reactos.git
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5f2bebf7a5
With this commit, we now use a forked version of MESA which only supports OpenGL 1.1, like the windows implementation does. It exposes : - The same pixel formats - The same set of extensions - Nothing more All of this without taking 10% of your build time. If you need a more modern option, look at the MESA package from Rapps, which is (and must be) maintained outside of this code tree. CORE-7499
979 lines
24 KiB
C
979 lines
24 KiB
C
/* $Id: lines.c,v 1.19 1998/02/03 23:46:00 brianp Exp $ */
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/*
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* Mesa 3-D graphics library
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* Version: 2.4
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* Copyright (C) 1995-1997 Brian Paul
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* $Log: lines.c,v $
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* Revision 1.19 1998/02/03 23:46:00 brianp
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* fixed a few problems with condition expressions for Amiga StormC compiler
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*
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* Revision 1.18 1997/07/24 01:24:11 brianp
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* changed precompiled header symbol from PCH to PC_HEADER
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*
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* Revision 1.17 1997/07/05 16:03:51 brianp
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* fixed PB overflow problem
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*
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* Revision 1.16 1997/06/20 02:01:49 brianp
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* changed color components from GLfixed to GLubyte
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*
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* Revision 1.15 1997/06/03 01:38:22 brianp
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* fixed divide by zero problem in feedback function (William Mitchell)
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*
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* Revision 1.14 1997/05/28 03:25:26 brianp
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* added precompiled header (PCH) support
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*
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* Revision 1.13 1997/05/03 00:51:02 brianp
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* removed calls to gl_texturing_enabled()
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*
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* Revision 1.12 1997/04/14 02:00:39 brianp
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* #include "texstate.h" instead of "texture.h"
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*
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* Revision 1.11 1997/04/12 12:25:01 brianp
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* replaced ctx->LineFunc with ctx->Driver.LineFunc, fixed PB->count bug
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*
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* Revision 1.10 1997/03/16 02:07:31 brianp
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* now use linetemp.h in line drawing functions
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*
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* Revision 1.9 1997/03/08 02:04:27 brianp
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* better implementation of feedback function
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*
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* Revision 1.8 1997/02/09 18:44:20 brianp
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* added GL_EXT_texture3D support
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*
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* Revision 1.7 1997/01/09 19:48:00 brianp
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* now call gl_texturing_enabled()
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*
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* Revision 1.6 1996/11/08 02:21:21 brianp
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* added null drawing function for GL_NO_RASTER
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*
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* Revision 1.5 1996/09/27 01:28:56 brianp
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* removed unused variables
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*
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* Revision 1.4 1996/09/25 02:01:54 brianp
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* new texture coord interpolation
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*
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* Revision 1.3 1996/09/15 14:18:10 brianp
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* now use GLframebuffer and GLvisual
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*
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* Revision 1.2 1996/09/15 01:48:58 brianp
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* removed #define NULL 0
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*
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* Revision 1.1 1996/09/13 01:38:16 brianp
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* Initial revision
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*
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*/
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#ifdef PC_HEADER
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#include "all.h"
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#else
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#include "context.h"
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#include "depth.h"
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#include "feedback.h"
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#include "lines.h"
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#include "dlist.h"
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#include "macros.h"
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#include "pb.h"
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#include "texstate.h"
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#include "types.h"
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#include "vb.h"
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#include <wine/debug.h>
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#endif
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WINE_DEFAULT_DEBUG_CHANNEL(opengl32);
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void gl_LineWidth( GLcontext *ctx, GLfloat width )
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{
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if (width<=0.0) {
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gl_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
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return;
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}
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if (INSIDE_BEGIN_END(ctx)) {
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gl_error( ctx, GL_INVALID_OPERATION, "glLineWidth" );
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return;
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}
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ctx->Line.Width = width;
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ctx->NewState |= NEW_RASTER_OPS;
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}
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void gl_LineStipple( GLcontext *ctx, GLint factor, GLushort pattern )
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{
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if (INSIDE_BEGIN_END(ctx)) {
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gl_error( ctx, GL_INVALID_OPERATION, "glLineStipple" );
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return;
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}
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ctx->Line.StippleFactor = CLAMP( factor, 1, 256 );
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ctx->Line.StipplePattern = pattern;
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ctx->NewState |= NEW_RASTER_OPS;
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}
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/**********************************************************************/
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/***** Rasterization *****/
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/**********************************************************************/
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/*
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* There are 4 pairs (RGBA, CI) of line drawing functions:
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* 1. simple: width=1 and no special rasterization functions (fastest)
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* 2. flat: width=1, non-stippled, flat-shaded, any raster operations
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* 3. smooth: width=1, non-stippled, smooth-shaded, any raster operations
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* 4. general: any other kind of line (slowest)
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*/
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/*
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* All line drawing functions have the same arguments:
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* v1, v2 - indexes of first and second endpoints into vertex buffer arrays
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* pv - provoking vertex: which vertex color/index to use for flat shading.
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*/
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static void feedback_line( GLcontext *ctx, GLuint v1, GLuint v2, GLuint pv )
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{
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struct vertex_buffer *VB = ctx->VB;
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GLfloat x1, y1, z1, w1;
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GLfloat x2, y2, z2, w2;
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GLfloat tex1[4], tex2[4], invq;
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GLfloat invRedScale = ctx->Visual->InvRedScale;
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GLfloat invGreenScale = ctx->Visual->InvGreenScale;
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GLfloat invBlueScale = ctx->Visual->InvBlueScale;
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GLfloat invAlphaScale = ctx->Visual->InvAlphaScale;
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x1 = VB->Win[v1][0];
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y1 = VB->Win[v1][1];
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z1 = VB->Win[v1][2] / DEPTH_SCALE;
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w1 = VB->Clip[v1][3];
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x2 = VB->Win[v2][0];
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y2 = VB->Win[v2][1];
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z2 = VB->Win[v2][2] / DEPTH_SCALE;
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w2 = VB->Clip[v2][3];
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invq = (VB->TexCoord[v1][3]==0.0) ? 1.0 : (1.0F / VB->TexCoord[v1][3]);
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tex1[0] = VB->TexCoord[v1][0] * invq;
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tex1[1] = VB->TexCoord[v1][1] * invq;
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tex1[2] = VB->TexCoord[v1][2] * invq;
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tex1[3] = VB->TexCoord[v1][3];
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invq = (VB->TexCoord[v2][3]==0.0) ? 1.0 : (1.0F / VB->TexCoord[v2][3]);
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tex2[0] = VB->TexCoord[v2][0] * invq;
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tex2[1] = VB->TexCoord[v2][1] * invq;
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tex2[2] = VB->TexCoord[v2][2] * invq;
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tex2[3] = VB->TexCoord[v2][3];
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if (ctx->StippleCounter==0) {
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FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_LINE_RESET_TOKEN );
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}
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else {
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FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_LINE_TOKEN );
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}
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{
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GLfloat color[4];
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/* convert color from integer to a float in [0,1] */
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color[0] = (GLfloat) VB->Color[pv][0] * invRedScale;
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color[1] = (GLfloat) VB->Color[pv][1] * invGreenScale;
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color[2] = (GLfloat) VB->Color[pv][2] * invBlueScale;
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color[3] = (GLfloat) VB->Color[pv][3] * invAlphaScale;
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gl_feedback_vertex( ctx, x1,y1,z1,w1, color,
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(GLfloat) VB->Index[pv], tex1 );
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gl_feedback_vertex( ctx, x2,y2,z2,w2, color,
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(GLfloat) VB->Index[pv], tex2 );
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}
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ctx->StippleCounter++;
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}
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static void select_line( GLcontext *ctx, GLuint v1, GLuint v2, GLuint pv )
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{
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gl_update_hitflag( ctx, ctx->VB->Win[v1][2] / DEPTH_SCALE );
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gl_update_hitflag( ctx, ctx->VB->Win[v2][2] / DEPTH_SCALE );
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}
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#if MAX_WIDTH > MAX_HEIGHT
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# define MAXPOINTS MAX_WIDTH
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#else
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# define MAXPOINTS MAX_HEIGHT
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#endif
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/* Flat, color index line */
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static void flat_ci_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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{
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GLint count;
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GLint *pbx = ctx->PB->x;
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GLint *pby = ctx->PB->y;
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PB_SET_INDEX( ctx, ctx->PB, ctx->VB->Index[pvert] );
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count = ctx->PB->count;
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#define INTERP_XY 1
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#define PLOT(X,Y) \
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pbx[count] = X; \
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pby[count] = Y; \
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count++;
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#include "linetemp.h"
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ctx->PB->count = count;
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PB_CHECK_FLUSH( ctx, ctx->PB );
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}
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/* Flat, color index line with Z interpolation/testing */
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static void flat_ci_z_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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{
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GLint count;
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GLint *pbx = ctx->PB->x;
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GLint *pby = ctx->PB->y;
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GLdepth *pbz = ctx->PB->z;
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PB_SET_INDEX( ctx, ctx->PB, ctx->VB->Index[pvert] );
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count = ctx->PB->count;
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#define INTERP_XY 1
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#define INTERP_Z 1
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#define PLOT(X,Y) \
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pbx[count] = X; \
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pby[count] = Y; \
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pbz[count] = Z; \
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count++;
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#include "linetemp.h"
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ctx->PB->count = count;
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PB_CHECK_FLUSH( ctx, ctx->PB );
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}
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/* Flat-shaded, RGBA line */
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static void flat_rgba_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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{
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GLint count;
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GLint *pbx = ctx->PB->x;
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GLint *pby = ctx->PB->y;
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GLubyte *color = ctx->VB->Color[pvert];
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PB_SET_COLOR( ctx, ctx->PB, color[0], color[1], color[2], color[3] );
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count = ctx->PB->count;
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#define INTERP_XY 1
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#define PLOT(X,Y) \
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pbx[count] = X; \
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pby[count] = Y; \
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count++;
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#include "linetemp.h"
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ctx->PB->count = count;
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PB_CHECK_FLUSH( ctx, ctx->PB );
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}
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/* Flat-shaded, RGBA line with Z interpolation/testing */
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static void flat_rgba_z_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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{
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GLint count;
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GLint *pbx = ctx->PB->x;
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GLint *pby = ctx->PB->y;
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GLdepth *pbz = ctx->PB->z;
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GLubyte *color = ctx->VB->Color[pvert];
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PB_SET_COLOR( ctx, ctx->PB, color[0], color[1], color[2], color[3] );
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count = ctx->PB->count;
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#define INTERP_XY 1
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#define INTERP_Z 1
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#define PLOT(X,Y) \
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pbx[count] = X; \
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pby[count] = Y; \
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pbz[count] = Z; \
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count++;
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#include "linetemp.h"
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ctx->PB->count = count;
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PB_CHECK_FLUSH( ctx, ctx->PB );
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}
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/* Smooth shaded, color index line */
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static void smooth_ci_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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{
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GLint count = ctx->PB->count;
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GLint *pbx = ctx->PB->x;
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GLint *pby = ctx->PB->y;
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GLuint *pbi = ctx->PB->i;
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#define INTERP_XY 1
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#define INTERP_INDEX 1
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#define PLOT(X,Y) \
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pbx[count] = X; \
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pby[count] = Y; \
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pbi[count] = I; \
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count++;
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#include "linetemp.h"
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ctx->PB->count = count;
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PB_CHECK_FLUSH( ctx, ctx->PB );
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}
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/* Smooth shaded, color index line with Z interpolation/testing */
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static void smooth_ci_z_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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{
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GLint count = ctx->PB->count;
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GLint *pbx = ctx->PB->x;
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GLint *pby = ctx->PB->y;
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GLdepth *pbz = ctx->PB->z;
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GLuint *pbi = ctx->PB->i;
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#define INTERP_XY 1
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#define INTERP_Z 1
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#define INTERP_INDEX 1
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#define PLOT(X,Y) \
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pbx[count] = X; \
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pby[count] = Y; \
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pbz[count] = Z; \
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pbi[count] = I; \
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count++;
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#include "linetemp.h"
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ctx->PB->count = count;
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PB_CHECK_FLUSH( ctx, ctx->PB );
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}
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/* Smooth-shaded, RGBA line */
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static void smooth_rgba_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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{
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GLint count = ctx->PB->count;
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GLint *pbx = ctx->PB->x;
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GLint *pby = ctx->PB->y;
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GLubyte *pbr = ctx->PB->r;
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GLubyte *pbg = ctx->PB->g;
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GLubyte *pbb = ctx->PB->b;
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GLubyte *pba = ctx->PB->a;
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#define INTERP_XY 1
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#define INTERP_RGB 1
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#define INTERP_ALPHA 1
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#define PLOT(X,Y) \
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pbx[count] = X; \
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pby[count] = Y; \
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pbr[count] = FixedToInt(r0); \
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pbg[count] = FixedToInt(g0); \
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pbb[count] = FixedToInt(b0); \
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pba[count] = FixedToInt(a0); \
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count++;
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#include "linetemp.h"
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ctx->PB->count = count;
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PB_CHECK_FLUSH( ctx, ctx->PB );
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}
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/* Smooth-shaded, RGBA line with Z interpolation/testing */
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static void smooth_rgba_z_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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{
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GLint count = ctx->PB->count;
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GLint *pbx = ctx->PB->x;
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GLint *pby = ctx->PB->y;
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GLdepth *pbz = ctx->PB->z;
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GLubyte *pbr = ctx->PB->r;
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GLubyte *pbg = ctx->PB->g;
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GLubyte *pbb = ctx->PB->b;
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GLubyte *pba = ctx->PB->a;
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#define INTERP_XY 1
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#define INTERP_Z 1
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#define INTERP_RGB 1
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#define INTERP_ALPHA 1
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#define PLOT(X,Y) \
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pbx[count] = X; \
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pby[count] = Y; \
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pbz[count] = Z; \
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pbr[count] = FixedToInt(r0); \
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pbg[count] = FixedToInt(g0); \
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pbb[count] = FixedToInt(b0); \
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pba[count] = FixedToInt(a0); \
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count++;
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#include "linetemp.h"
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ctx->PB->count = count;
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PB_CHECK_FLUSH( ctx, ctx->PB );
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}
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#define CHECK_FULL(count) \
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if (count >= PB_SIZE-MAX_WIDTH) { \
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ctx->PB->count = count; \
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gl_flush_pb(ctx); \
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count = ctx->PB->count; \
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}
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/* Smooth shaded, color index, any width, maybe stippled */
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static void general_smooth_ci_line( GLcontext *ctx,
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GLuint vert0, GLuint vert1, GLuint pvert )
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{
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GLint count = ctx->PB->count;
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GLint *pbx = ctx->PB->x;
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GLint *pby = ctx->PB->y;
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GLdepth *pbz = ctx->PB->z;
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GLuint *pbi = ctx->PB->i;
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if (ctx->Line.StippleFlag) {
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/* stippled */
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#define INTERP_XY 1
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#define INTERP_Z 1
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#define INTERP_INDEX 1
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#define WIDE 1
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#define STIPPLE 1
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#define PLOT(X,Y) \
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pbx[count] = X; \
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pby[count] = Y; \
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pbz[count] = Z; \
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pbi[count] = I; \
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count++; \
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CHECK_FULL(count);
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#include "linetemp.h"
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}
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else {
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/* unstippled */
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if (ctx->Line.Width==2.0F) {
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/* special case: unstippled and width=2 */
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#define INTERP_XY 1
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#define INTERP_Z 1
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#define INTERP_INDEX 1
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#define XMAJOR_PLOT(X,Y) \
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pbx[count] = X; pbx[count+1] = X; \
|
|
pby[count] = Y; pby[count+1] = Y+1; \
|
|
pbz[count] = Z; pbz[count+1] = Z; \
|
|
pbi[count] = I; pbi[count+1] = I; \
|
|
count += 2;
|
|
#define YMAJOR_PLOT(X,Y) \
|
|
pbx[count] = X; pbx[count+1] = X+1; \
|
|
pby[count] = Y; pby[count+1] = Y; \
|
|
pbz[count] = Z; pbz[count+1] = Z; \
|
|
pbi[count] = I; pbi[count+1] = I; \
|
|
count += 2;
|
|
#include "linetemp.h"
|
|
}
|
|
else {
|
|
/* unstippled, any width */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define INTERP_INDEX 1
|
|
#define WIDE 1
|
|
#define PLOT(X,Y) \
|
|
pbx[count] = X; \
|
|
pby[count] = Y; \
|
|
pbz[count] = Z; \
|
|
pbi[count] = I; \
|
|
count++; \
|
|
CHECK_FULL(count);
|
|
#include "linetemp.h"
|
|
}
|
|
}
|
|
|
|
ctx->PB->count = count;
|
|
PB_CHECK_FLUSH( ctx, ctx->PB );
|
|
}
|
|
|
|
|
|
/* Flat shaded, color index, any width, maybe stippled */
|
|
static void general_flat_ci_line( GLcontext *ctx,
|
|
GLuint vert0, GLuint vert1, GLuint pvert )
|
|
{
|
|
GLint count;
|
|
GLint *pbx = ctx->PB->x;
|
|
GLint *pby = ctx->PB->y;
|
|
GLdepth *pbz = ctx->PB->z;
|
|
PB_SET_INDEX( ctx, ctx->PB, ctx->VB->Index[pvert] );
|
|
count = ctx->PB->count;
|
|
|
|
if (ctx->Line.StippleFlag) {
|
|
/* stippled, any width */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define WIDE 1
|
|
#define STIPPLE 1
|
|
#define PLOT(X,Y) \
|
|
pbx[count] = X; \
|
|
pby[count] = Y; \
|
|
pbz[count] = Z; \
|
|
count++; \
|
|
CHECK_FULL(count);
|
|
#include "linetemp.h"
|
|
}
|
|
else {
|
|
/* unstippled */
|
|
if (ctx->Line.Width==2.0F) {
|
|
/* special case: unstippled and width=2 */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define XMAJOR_PLOT(X,Y) \
|
|
pbx[count] = X; pbx[count+1] = X; \
|
|
pby[count] = Y; pby[count+1] = Y+1; \
|
|
pbz[count] = Z; pbz[count+1] = Z; \
|
|
count += 2;
|
|
#define YMAJOR_PLOT(X,Y) \
|
|
pbx[count] = X; pbx[count+1] = X+1; \
|
|
pby[count] = Y; pby[count+1] = Y; \
|
|
pbz[count] = Z; pbz[count+1] = Z; \
|
|
count += 2;
|
|
#include "linetemp.h"
|
|
}
|
|
else {
|
|
/* unstippled, any width */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define WIDE 1
|
|
#define PLOT(X,Y) \
|
|
pbx[count] = X; \
|
|
pby[count] = Y; \
|
|
pbz[count] = Z; \
|
|
count++; \
|
|
CHECK_FULL(count);
|
|
#include "linetemp.h"
|
|
}
|
|
}
|
|
|
|
ctx->PB->count = count;
|
|
PB_CHECK_FLUSH( ctx, ctx->PB );
|
|
}
|
|
|
|
|
|
|
|
static void general_smooth_rgba_line( GLcontext *ctx,
|
|
GLuint vert0, GLuint vert1, GLuint pvert)
|
|
{
|
|
GLint count = ctx->PB->count;
|
|
GLint *pbx = ctx->PB->x;
|
|
GLint *pby = ctx->PB->y;
|
|
GLdepth *pbz = ctx->PB->z;
|
|
GLubyte *pbr = ctx->PB->r;
|
|
GLubyte *pbg = ctx->PB->g;
|
|
GLubyte *pbb = ctx->PB->b;
|
|
GLubyte *pba = ctx->PB->a;
|
|
|
|
TRACE("Line %3.1f, %3.1f, %3.1f (r%u, g%u, b%u) --> %3.1f, %3.1f, %3.1f (r%u, g%u, b%u)\n",
|
|
ctx->VB->Win[vert0][0], ctx->VB->Win[vert0][1], ctx->VB->Win[vert0][2], ctx->VB->Color[vert0][0], ctx->VB->Color[vert0][1], ctx->VB->Color[vert0][2],
|
|
ctx->VB->Win[vert1][0], ctx->VB->Win[vert1][1], ctx->VB->Win[vert1][2], ctx->VB->Color[vert1][0], ctx->VB->Color[vert1][1], ctx->VB->Color[vert1][2]);
|
|
|
|
if (ctx->Line.StippleFlag) {
|
|
/* stippled */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define INTERP_RGB 1
|
|
#define INTERP_ALPHA 1
|
|
#define WIDE 1
|
|
#define STIPPLE 1
|
|
#define PLOT(X,Y) \
|
|
pbx[count] = X; \
|
|
pby[count] = Y; \
|
|
pbz[count] = Z; \
|
|
pbr[count] = FixedToInt(r0); \
|
|
pbg[count] = FixedToInt(g0); \
|
|
pbb[count] = FixedToInt(b0); \
|
|
pba[count] = FixedToInt(a0); \
|
|
count++; \
|
|
CHECK_FULL(count);
|
|
#include "linetemp.h"
|
|
}
|
|
else {
|
|
/* unstippled */
|
|
if (ctx->Line.Width==2.0F) {
|
|
/* special case: unstippled and width=2 */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define INTERP_RGB 1
|
|
#define INTERP_ALPHA 1
|
|
#define XMAJOR_PLOT(X,Y) \
|
|
pbx[count] = X; pbx[count+1] = X; \
|
|
pby[count] = Y; pby[count+1] = Y+1; \
|
|
pbz[count] = Z; pbz[count+1] = Z; \
|
|
pbr[count] = FixedToInt(r0); pbr[count+1] = FixedToInt(r0); \
|
|
pbg[count] = FixedToInt(g0); pbg[count+1] = FixedToInt(g0); \
|
|
pbb[count] = FixedToInt(b0); pbb[count+1] = FixedToInt(b0); \
|
|
pba[count] = FixedToInt(a0); pba[count+1] = FixedToInt(a0); \
|
|
count += 2;
|
|
#define YMAJOR_PLOT(X,Y) \
|
|
pbx[count] = X; pbx[count+1] = X+1; \
|
|
pby[count] = Y; pby[count+1] = Y; \
|
|
pbz[count] = Z; pbz[count+1] = Z; \
|
|
pbr[count] = FixedToInt(r0); pbr[count+1] = FixedToInt(r0); \
|
|
pbg[count] = FixedToInt(g0); pbg[count+1] = FixedToInt(g0); \
|
|
pbb[count] = FixedToInt(b0); pbb[count+1] = FixedToInt(b0); \
|
|
pba[count] = FixedToInt(a0); pba[count+1] = FixedToInt(a0); \
|
|
count += 2;
|
|
#include "linetemp.h"
|
|
}
|
|
else {
|
|
/* unstippled, any width */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define INTERP_RGB 1
|
|
#define INTERP_ALPHA 1
|
|
#define WIDE 1
|
|
#define PLOT(X,Y) \
|
|
pbx[count] = X; \
|
|
pby[count] = Y; \
|
|
pbz[count] = Z; \
|
|
pbr[count] = FixedToInt(r0); \
|
|
pbg[count] = FixedToInt(g0); \
|
|
pbb[count] = FixedToInt(b0); \
|
|
pba[count] = FixedToInt(a0); \
|
|
count++; \
|
|
CHECK_FULL(count);
|
|
#include "linetemp.h"
|
|
}
|
|
}
|
|
|
|
ctx->PB->count = count;
|
|
PB_CHECK_FLUSH( ctx, ctx->PB );
|
|
}
|
|
|
|
|
|
static void general_flat_rgba_line( GLcontext *ctx,
|
|
GLuint vert0, GLuint vert1, GLuint pvert )
|
|
{
|
|
GLint count;
|
|
GLint *pbx = ctx->PB->x;
|
|
GLint *pby = ctx->PB->y;
|
|
GLdepth *pbz = ctx->PB->z;
|
|
GLubyte *color = ctx->VB->Color[pvert];
|
|
PB_SET_COLOR( ctx, ctx->PB, color[0], color[1], color[2], color[3] );
|
|
count = ctx->PB->count;
|
|
|
|
if (ctx->Line.StippleFlag) {
|
|
/* stippled */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define WIDE 1
|
|
#define STIPPLE 1
|
|
#define PLOT(X,Y) \
|
|
pbx[count] = X; \
|
|
pby[count] = Y; \
|
|
pbz[count] = Z; \
|
|
count++; \
|
|
CHECK_FULL(count);
|
|
#include "linetemp.h"
|
|
}
|
|
else {
|
|
/* unstippled */
|
|
if (ctx->Line.Width==2.0F) {
|
|
/* special case: unstippled and width=2 */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define XMAJOR_PLOT(X,Y) \
|
|
pbx[count] = X; pbx[count+1] = X; \
|
|
pby[count] = Y; pby[count+1] = Y+1; \
|
|
pbz[count] = Z; pbz[count+1] = Z; \
|
|
count += 2;
|
|
#define YMAJOR_PLOT(X,Y) \
|
|
pbx[count] = X; pbx[count+1] = X+1; \
|
|
pby[count] = Y; pby[count+1] = Y; \
|
|
pbz[count] = Z; pbz[count+1] = Z; \
|
|
count += 2;
|
|
#include "linetemp.h"
|
|
}
|
|
else {
|
|
/* unstippled, any width */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define WIDE 1
|
|
#define PLOT(X,Y) \
|
|
pbx[count] = X; \
|
|
pby[count] = Y; \
|
|
pbz[count] = Z; \
|
|
count++; \
|
|
CHECK_FULL(count);
|
|
#include "linetemp.h"
|
|
}
|
|
}
|
|
|
|
ctx->PB->count = count;
|
|
PB_CHECK_FLUSH( ctx, ctx->PB );
|
|
}
|
|
|
|
|
|
|
|
/* Flat-shaded, textured, any width, maybe stippled */
|
|
static void flat_textured_line( GLcontext *ctx,
|
|
GLuint vert0, GLuint vert1, GLuint pv )
|
|
{
|
|
GLint count;
|
|
GLint *pbx = ctx->PB->x;
|
|
GLint *pby = ctx->PB->y;
|
|
GLdepth *pbz = ctx->PB->z;
|
|
GLfloat *pbs = ctx->PB->s;
|
|
GLfloat *pbt = ctx->PB->t;
|
|
GLfloat *pbu = ctx->PB->u;
|
|
GLubyte *color = ctx->VB->Color[pv];
|
|
PB_SET_COLOR( ctx, ctx->PB, color[0], color[1], color[2], color[3] );
|
|
count = ctx->PB->count;
|
|
|
|
if (ctx->Line.StippleFlag) {
|
|
/* stippled */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define INTERP_STW 1
|
|
#define INTERP_UV 1
|
|
#define WIDE 1
|
|
#define STIPPLE 1
|
|
#define PLOT(X,Y) \
|
|
pbx[count] = X; \
|
|
pby[count] = Y; \
|
|
pbz[count] = Z; \
|
|
pbs[count] = s0 / w0; \
|
|
pbt[count] = t0 / w0; \
|
|
pbu[count] = u0 / w0; \
|
|
count++; \
|
|
CHECK_FULL(count);
|
|
#include "linetemp.h"
|
|
}
|
|
else {
|
|
/* unstippled */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define INTERP_STW 1
|
|
#define INTERP_UV 1
|
|
#define WIDE 1
|
|
#define PLOT(X,Y) \
|
|
pbx[count] = X; \
|
|
pby[count] = Y; \
|
|
pbz[count] = Z; \
|
|
pbs[count] = s0 / w0; \
|
|
pbt[count] = t0 / w0; \
|
|
pbu[count] = u0 / w0; \
|
|
count++; \
|
|
CHECK_FULL(count);
|
|
#include "linetemp.h"
|
|
}
|
|
|
|
ctx->PB->count = count;
|
|
PB_CHECK_FLUSH( ctx, ctx->PB );
|
|
}
|
|
|
|
|
|
|
|
/* Smooth-shaded, textured, any width, maybe stippled */
|
|
static void smooth_textured_line( GLcontext *ctx,
|
|
GLuint vert0, GLuint vert1, GLuint pv )
|
|
{
|
|
GLint count = ctx->PB->count;
|
|
GLint *pbx = ctx->PB->x;
|
|
GLint *pby = ctx->PB->y;
|
|
GLdepth *pbz = ctx->PB->z;
|
|
GLfloat *pbs = ctx->PB->s;
|
|
GLfloat *pbt = ctx->PB->t;
|
|
GLfloat *pbu = ctx->PB->u;
|
|
GLubyte *pbr = ctx->PB->r;
|
|
GLubyte *pbg = ctx->PB->g;
|
|
GLubyte *pbb = ctx->PB->b;
|
|
GLubyte *pba = ctx->PB->a;
|
|
|
|
if (ctx->Line.StippleFlag) {
|
|
/* stippled */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define INTERP_RGB 1
|
|
#define INTERP_ALPHA 1
|
|
#define INTERP_STW 1
|
|
#define INTERP_UV 1
|
|
#define WIDE 1
|
|
#define STIPPLE 1
|
|
#define PLOT(X,Y) \
|
|
pbx[count] = X; \
|
|
pby[count] = Y; \
|
|
pbz[count] = Z; \
|
|
pbs[count] = s0 / w0; \
|
|
pbt[count] = t0 / w0; \
|
|
pbu[count] = u0 / w0; \
|
|
pbr[count] = FixedToInt(r0); \
|
|
pbg[count] = FixedToInt(g0); \
|
|
pbb[count] = FixedToInt(b0); \
|
|
pba[count] = FixedToInt(a0); \
|
|
count++; \
|
|
CHECK_FULL(count);
|
|
#include "linetemp.h"
|
|
}
|
|
else {
|
|
/* unstippled */
|
|
#define INTERP_XY 1
|
|
#define INTERP_Z 1
|
|
#define INTERP_RGB 1
|
|
#define INTERP_ALPHA 1
|
|
#define INTERP_STW 1
|
|
#define INTERP_UV 1
|
|
#define WIDE 1
|
|
#define PLOT(X,Y) \
|
|
pbx[count] = X; \
|
|
pby[count] = Y; \
|
|
pbz[count] = Z; \
|
|
pbs[count] = s0 / w0; \
|
|
pbt[count] = t0 / w0; \
|
|
pbu[count] = u0 / w0; \
|
|
pbr[count] = FixedToInt(r0); \
|
|
pbg[count] = FixedToInt(g0); \
|
|
pbb[count] = FixedToInt(b0); \
|
|
pba[count] = FixedToInt(a0); \
|
|
count++; \
|
|
CHECK_FULL(count);
|
|
#include "linetemp.h"
|
|
}
|
|
|
|
ctx->PB->count = count;
|
|
PB_CHECK_FLUSH( ctx, ctx->PB );
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Null rasterizer for measuring transformation speed.
|
|
*/
|
|
static void null_line( GLcontext *ctx, GLuint v1, GLuint v2, GLuint pv )
|
|
{
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Determine which line drawing function to use given the current
|
|
* rendering context.
|
|
*/
|
|
void gl_set_line_function( GLcontext *ctx )
|
|
{
|
|
GLboolean rgbmode = ctx->Visual->RGBAflag;
|
|
/* TODO: antialiased lines */
|
|
|
|
if (ctx->RenderMode==GL_RENDER) {
|
|
if (ctx->NoRaster) {
|
|
ctx->Driver.LineFunc = null_line;
|
|
return;
|
|
}
|
|
if (ctx->Driver.LineFunc) {
|
|
/* Device driver will draw lines. */
|
|
ctx->Driver.LineFunc = ctx->Driver.LineFunc;
|
|
}
|
|
else if (ctx->Texture.Enabled) {
|
|
if (ctx->Light.ShadeModel==GL_SMOOTH) {
|
|
ctx->Driver.LineFunc = smooth_textured_line;
|
|
}
|
|
else {
|
|
ctx->Driver.LineFunc = flat_textured_line;
|
|
}
|
|
}
|
|
else if (ctx->Line.Width!=1.0 || ctx->Line.StippleFlag
|
|
|| ctx->Line.SmoothFlag || ctx->Texture.Enabled) {
|
|
if (ctx->Light.ShadeModel==GL_SMOOTH) {
|
|
if (rgbmode)
|
|
ctx->Driver.LineFunc = general_smooth_rgba_line;
|
|
else
|
|
ctx->Driver.LineFunc = general_smooth_ci_line;
|
|
}
|
|
else {
|
|
if (rgbmode)
|
|
ctx->Driver.LineFunc = general_flat_rgba_line;
|
|
else
|
|
ctx->Driver.LineFunc = general_flat_ci_line;
|
|
}
|
|
}
|
|
else {
|
|
if (ctx->Light.ShadeModel==GL_SMOOTH) {
|
|
/* Width==1, non-stippled, smooth-shaded */
|
|
if (ctx->Depth.Test
|
|
|| (ctx->Fog.Enabled && ctx->Hint.Fog==GL_NICEST)) {
|
|
if (rgbmode)
|
|
ctx->Driver.LineFunc = smooth_rgba_z_line;
|
|
else
|
|
ctx->Driver.LineFunc = smooth_ci_z_line;
|
|
}
|
|
else {
|
|
if (rgbmode)
|
|
ctx->Driver.LineFunc = smooth_rgba_line;
|
|
else
|
|
ctx->Driver.LineFunc = smooth_ci_line;
|
|
}
|
|
}
|
|
else {
|
|
/* Width==1, non-stippled, flat-shaded */
|
|
if (ctx->Depth.Test
|
|
|| (ctx->Fog.Enabled && ctx->Hint.Fog==GL_NICEST)) {
|
|
if (rgbmode)
|
|
ctx->Driver.LineFunc = flat_rgba_z_line;
|
|
else
|
|
ctx->Driver.LineFunc = flat_ci_z_line;
|
|
}
|
|
else {
|
|
if (rgbmode)
|
|
ctx->Driver.LineFunc = flat_rgba_line;
|
|
else
|
|
ctx->Driver.LineFunc = flat_ci_line;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (ctx->RenderMode==GL_FEEDBACK) {
|
|
ctx->Driver.LineFunc = feedback_line;
|
|
}
|
|
else {
|
|
/* GL_SELECT mode */
|
|
ctx->Driver.LineFunc = select_line;
|
|
}
|
|
}
|
|
|