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| Rev | Author | Line No. | Line |
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| 57 | pj | 1 | /* $Id: s_points.c,v 1.1 2003-02-28 11:49:42 pj Exp $ */ |
| 2 | |||
| 3 | /* |
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| 4 | * Mesa 3-D graphics library |
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| 5 | * Version: 4.1 |
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| 6 | * |
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| 7 | * Copyright (C) 1999-2002 Brian Paul All Rights Reserved. |
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| 8 | * |
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| 9 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 10 | * copy of this software and associated documentation files (the "Software"), |
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| 11 | * to deal in the Software without restriction, including without limitation |
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| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 13 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 14 | * Software is furnished to do so, subject to the following conditions: |
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| 15 | * |
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| 16 | * The above copyright notice and this permission notice shall be included |
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| 17 | * in all copies or substantial portions of the Software. |
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| 18 | * |
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| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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| 23 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | */ |
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| 26 | |||
| 27 | |||
| 28 | #include "glheader.h" |
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| 29 | #include "colormac.h" |
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| 30 | #include "context.h" |
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| 31 | #include "macros.h" |
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| 32 | #include "mmath.h" |
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| 33 | #include "texstate.h" |
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| 34 | #include "s_context.h" |
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| 35 | #include "s_feedback.h" |
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| 36 | #include "s_points.h" |
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| 37 | #include "s_span.h" |
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| 38 | |||
| 39 | |||
| 40 | |||
| 41 | #define RGBA 0x1 |
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| 42 | #define INDEX 0x2 |
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| 43 | #define SMOOTH 0x4 |
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| 44 | #define TEXTURE 0x8 |
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| 45 | #define SPECULAR 0x10 |
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| 46 | #define LARGE 0x20 |
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| 47 | #define ATTENUATE 0x40 |
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| 48 | #define SPRITE 0x80 |
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| 49 | |||
| 50 | |||
| 51 | /* |
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| 52 | * CI points with size == 1.0 |
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| 53 | */ |
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| 54 | #define FLAGS (INDEX) |
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| 55 | #define NAME size1_ci_point |
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| 56 | #include "s_pointtemp.h" |
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| 57 | |||
| 58 | |||
| 59 | /* |
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| 60 | * General CI points. |
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| 61 | */ |
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| 62 | #define FLAGS (INDEX | LARGE) |
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| 63 | #define NAME general_ci_point |
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| 64 | #include "s_pointtemp.h" |
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| 65 | |||
| 66 | |||
| 67 | /* |
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| 68 | * Antialiased CI points. |
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| 69 | */ |
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| 70 | #define FLAGS (INDEX | SMOOTH) |
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| 71 | #define NAME antialiased_ci_point |
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| 72 | #include "s_pointtemp.h" |
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| 73 | |||
| 74 | |||
| 75 | /* |
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| 76 | * Distance attenuated, general CI points. |
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| 77 | */ |
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| 78 | #define FLAGS (INDEX | ATTENUATE) |
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| 79 | #define NAME atten_general_ci_point |
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| 80 | #include "s_pointtemp.h" |
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| 81 | |||
| 82 | |||
| 83 | /* |
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| 84 | * RGBA points with size == 1.0 |
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| 85 | */ |
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| 86 | #define FLAGS (RGBA) |
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| 87 | #define NAME size1_rgba_point |
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| 88 | #include "s_pointtemp.h" |
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| 89 | |||
| 90 | |||
| 91 | /* |
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| 92 | * General RGBA points. |
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| 93 | */ |
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| 94 | #define FLAGS (RGBA | LARGE) |
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| 95 | #define NAME general_rgba_point |
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| 96 | #include "s_pointtemp.h" |
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| 97 | |||
| 98 | |||
| 99 | /* |
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| 100 | * Antialiased RGBA points. |
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| 101 | */ |
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| 102 | #define FLAGS (RGBA | SMOOTH) |
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| 103 | #define NAME antialiased_rgba_point |
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| 104 | #include "s_pointtemp.h" |
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| 105 | |||
| 106 | |||
| 107 | /* |
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| 108 | * Textured RGBA points. |
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| 109 | */ |
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| 110 | #define FLAGS (RGBA | LARGE | TEXTURE | SPECULAR) |
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| 111 | #define NAME textured_rgba_point |
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| 112 | #include "s_pointtemp.h" |
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| 113 | |||
| 114 | |||
| 115 | /* |
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| 116 | * Antialiased points with texture mapping. |
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| 117 | */ |
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| 118 | #define FLAGS (RGBA | SMOOTH | TEXTURE | SPECULAR) |
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| 119 | #define NAME antialiased_tex_rgba_point |
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| 120 | #include "s_pointtemp.h" |
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| 121 | |||
| 122 | |||
| 123 | /* |
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| 124 | * Distance attenuated, general RGBA points. |
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| 125 | */ |
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| 126 | #define FLAGS (RGBA | ATTENUATE) |
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| 127 | #define NAME atten_general_rgba_point |
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| 128 | #include "s_pointtemp.h" |
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| 129 | |||
| 130 | |||
| 131 | /* |
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| 132 | * Distance attenuated, textured RGBA points. |
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| 133 | */ |
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| 134 | #define FLAGS (RGBA | ATTENUATE | TEXTURE | SPECULAR) |
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| 135 | #define NAME atten_textured_rgba_point |
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| 136 | #include "s_pointtemp.h" |
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| 137 | |||
| 138 | |||
| 139 | /* |
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| 140 | * Distance attenuated, antialiased points with or without texture mapping. |
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| 141 | */ |
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| 142 | #define FLAGS (RGBA | ATTENUATE | TEXTURE | SMOOTH) |
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| 143 | #define NAME atten_antialiased_rgba_point |
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| 144 | #include "s_pointtemp.h" |
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| 145 | |||
| 146 | |||
| 147 | /* |
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| 148 | * Sprite (textured point) |
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| 149 | */ |
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| 150 | #define FLAGS (RGBA | SPRITE) |
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| 151 | #define NAME sprite_point |
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| 152 | #include "s_pointtemp.h" |
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| 153 | |||
| 154 | |||
| 155 | #define FLAGS (RGBA | ATTENUATE | SPRITE) |
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| 156 | #define NAME atten_sprite_point |
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| 157 | #include "s_pointtemp.h" |
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| 158 | |||
| 159 | |||
| 160 | |||
| 161 | void _swrast_add_spec_terms_point( GLcontext *ctx, |
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| 162 | const SWvertex *v0 ) |
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| 163 | { |
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| 164 | SWvertex *ncv0 = (SWvertex *)v0; |
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| 165 | GLchan c[1][4]; |
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| 166 | COPY_CHAN4( c[0], ncv0->color ); |
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| 167 | ACC_3V( ncv0->color, ncv0->specular ); |
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| 168 | SWRAST_CONTEXT(ctx)->SpecPoint( ctx, ncv0 ); |
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| 169 | COPY_CHAN4( ncv0->color, c[0] ); |
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| 170 | } |
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| 171 | |||
| 172 | |||
| 173 | |||
| 174 | /* record the current point function name */ |
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| 175 | #ifdef DEBUG |
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| 176 | |||
| 177 | static const char *pntFuncName = NULL; |
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| 178 | |||
| 179 | #define USE(pntFunc) \ |
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| 180 | do { \ |
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| 181 | pntFuncName = #pntFunc; \ |
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| 182 | /*printf("%s\n", pntFuncName);*/ \ |
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| 183 | swrast->Point = pntFunc; \ |
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| 184 | } while (0) |
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| 185 | |||
| 186 | #else |
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| 187 | |||
| 188 | #define USE(pntFunc) swrast->Point = pntFunc |
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| 189 | |||
| 190 | #endif |
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| 191 | |||
| 192 | |||
| 193 | /* |
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| 194 | * Examine the current context to determine which point drawing function |
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| 195 | * should be used. |
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| 196 | */ |
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| 197 | void |
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| 198 | _swrast_choose_point( GLcontext *ctx ) |
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| 199 | { |
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| 200 | SWcontext *swrast = SWRAST_CONTEXT(ctx); |
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| 201 | GLboolean rgbMode = ctx->Visual.rgbMode; |
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| 202 | |||
| 203 | if (ctx->RenderMode==GL_RENDER) { |
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| 204 | if (ctx->Point.PointSprite) { |
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| 205 | /* GL_NV_point_sprite */ |
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| 206 | /* XXX this might not be good enough */ |
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| 207 | if (ctx->Point._Attenuated) |
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| 208 | USE(atten_sprite_point); |
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| 209 | else |
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| 210 | USE(sprite_point); |
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| 211 | } |
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| 212 | else if (ctx->Point.SmoothFlag) { |
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| 213 | /* Smooth points */ |
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| 214 | if (rgbMode) { |
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| 215 | if (ctx->Point._Attenuated || ctx->VertexProgram.PointSizeEnabled) { |
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| 216 | USE(atten_antialiased_rgba_point); |
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| 217 | } |
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| 218 | else if (ctx->Texture._EnabledUnits) { |
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| 219 | USE(antialiased_tex_rgba_point); |
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| 220 | } |
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| 221 | else { |
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| 222 | USE(antialiased_rgba_point); |
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| 223 | } |
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| 224 | } |
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| 225 | else { |
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| 226 | USE(antialiased_ci_point); |
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| 227 | } |
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| 228 | } |
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| 229 | else if (ctx->Point._Attenuated || ctx->VertexProgram.PointSizeEnabled) { |
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| 230 | if (rgbMode) { |
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| 231 | if (ctx->Texture._EnabledUnits) { |
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| 232 | if (ctx->Point.SmoothFlag) { |
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| 233 | USE(atten_antialiased_rgba_point); |
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| 234 | } |
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| 235 | else { |
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| 236 | USE(atten_textured_rgba_point); |
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| 237 | } |
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| 238 | } |
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| 239 | else { |
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| 240 | USE(atten_general_rgba_point); |
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| 241 | } |
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| 242 | } |
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| 243 | else { |
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| 244 | /* ci, atten */ |
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| 245 | USE(atten_general_ci_point); |
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| 246 | } |
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| 247 | } |
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| 248 | else if (ctx->Texture._EnabledUnits && rgbMode) { |
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| 249 | /* textured */ |
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| 250 | USE(textured_rgba_point); |
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| 251 | } |
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| 252 | else if (ctx->Point.Size != 1.0) { |
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| 253 | /* large points */ |
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| 254 | if (rgbMode) { |
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| 255 | USE(general_rgba_point); |
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| 256 | } |
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| 257 | else { |
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| 258 | USE(general_ci_point); |
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| 259 | } |
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| 260 | } |
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| 261 | else { |
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| 262 | /* single pixel points */ |
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| 263 | if (rgbMode) { |
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| 264 | USE(size1_rgba_point); |
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| 265 | } |
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| 266 | else { |
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| 267 | USE(size1_ci_point); |
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| 268 | } |
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| 269 | } |
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| 270 | } |
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| 271 | else if (ctx->RenderMode==GL_FEEDBACK) { |
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| 272 | USE(_mesa_feedback_point); |
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| 273 | } |
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| 274 | else { |
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| 275 | /* GL_SELECT mode */ |
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| 276 | USE(_mesa_select_point); |
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| 277 | } |
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| 278 | } |