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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 55 | pj | 1 | /* $Id: rastpos.c,v 1.1 2003-02-28 11:42:04 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 "clip.h" |
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| 30 | #include "colormac.h" |
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| 31 | #include "context.h" |
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| 32 | #include "feedback.h" |
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| 33 | #include "light.h" |
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| 34 | #include "macros.h" |
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| 35 | #include "mmath.h" |
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| 36 | #include "rastpos.h" |
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| 37 | #include "state.h" |
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| 38 | #include "simple_list.h" |
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| 39 | #include "mtypes.h" |
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| 40 | |||
| 41 | #include "math/m_matrix.h" |
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| 42 | #include "math/m_xform.h" |
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| 43 | |||
| 44 | |||
| 45 | /* |
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| 46 | * Clip a point against the view volume. |
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| 47 | * Input: v - vertex-vector describing the point to clip |
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| 48 | * Return: 0 = outside view volume |
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| 49 | * 1 = inside view volume |
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| 50 | */ |
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| 51 | static GLuint |
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| 52 | viewclip_point( const GLfloat v[] ) |
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| 53 | { |
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| 54 | if ( v[0] > v[3] || v[0] < -v[3] |
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| 55 | || v[1] > v[3] || v[1] < -v[3] |
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| 56 | || v[2] > v[3] || v[2] < -v[3] ) { |
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| 57 | return 0; |
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| 58 | } |
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| 59 | else { |
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| 60 | return 1; |
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| 61 | } |
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| 62 | } |
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| 63 | |||
| 64 | |||
| 65 | /* As above, but only clip test against far/near Z planes */ |
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| 66 | static GLuint |
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| 67 | viewclip_point_z( const GLfloat v[] ) |
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| 68 | { |
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| 69 | if (v[2] > v[3] || v[2] < -v[3] ) { |
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| 70 | return 0; |
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| 71 | } |
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| 72 | else { |
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| 73 | return 1; |
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| 74 | } |
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| 75 | } |
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| 76 | |||
| 77 | |||
| 78 | |||
| 79 | /* |
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| 80 | * Clip a point against the user clipping planes. |
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| 81 | * Input: v - vertex-vector describing the point to clip. |
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| 82 | * Return: 0 = point was clipped |
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| 83 | * 1 = point not clipped |
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| 84 | */ |
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| 85 | static GLuint |
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| 86 | userclip_point( GLcontext* ctx, const GLfloat v[] ) |
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| 87 | { |
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| 88 | GLuint p; |
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| 89 | |||
| 90 | for (p = 0; p < ctx->Const.MaxClipPlanes; p++) { |
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| 91 | if (ctx->Transform.ClipPlanesEnabled & (1 << p)) { |
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| 92 | GLfloat dot = v[0] * ctx->Transform._ClipUserPlane[p][0] |
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| 93 | + v[1] * ctx->Transform._ClipUserPlane[p][1] |
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| 94 | + v[2] * ctx->Transform._ClipUserPlane[p][2] |
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| 95 | + v[3] * ctx->Transform._ClipUserPlane[p][3]; |
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| 96 | if (dot < 0.0F) { |
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| 97 | return 0; |
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| 98 | } |
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| 99 | } |
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| 100 | } |
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| 101 | |||
| 102 | return 1; |
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| 103 | } |
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| 104 | |||
| 105 | |||
| 106 | /* This has been split off to allow the normal shade routines to |
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| 107 | * get a little closer to the vertex buffer, and to use the |
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| 108 | * GLvector objects directly. |
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| 109 | * Input: ctx - the context |
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| 110 | * vertex - vertex location |
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| 111 | * normal - normal vector |
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| 112 | * Output: Rcolor - returned color |
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| 113 | * Rspec - returned specular color (if separate specular enabled) |
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| 114 | * Rindex - returned color index |
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| 115 | */ |
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| 116 | static void |
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| 117 | shade_rastpos(GLcontext *ctx, |
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| 118 | const GLfloat vertex[4], |
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| 119 | const GLfloat normal[3], |
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| 120 | GLfloat Rcolor[4], |
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| 121 | GLfloat Rspec[4], |
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| 122 | GLuint *Rindex) |
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| 123 | { |
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| 124 | GLfloat (*base)[3] = ctx->Light._BaseColor; |
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| 125 | struct gl_light *light; |
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| 126 | GLfloat diffuseColor[4], specularColor[4]; |
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| 127 | GLfloat diffuse = 0, specular = 0; |
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| 128 | |||
| 129 | if (!ctx->_ShineTable[0] || !ctx->_ShineTable[1]) |
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| 130 | _mesa_validate_all_lighting_tables( ctx ); |
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| 131 | |||
| 132 | COPY_3V(diffuseColor, base[0]); |
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| 133 | diffuseColor[3] = CLAMP( ctx->Light.Material[0].Diffuse[3], 0.0F, 1.0F ); |
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| 134 | ASSIGN_4V(specularColor, 0.0, 0.0, 0.0, 0.0); |
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| 135 | |||
| 136 | foreach (light, &ctx->Light.EnabledList) { |
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| 137 | GLfloat n_dot_h; |
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| 138 | GLfloat attenuation = 1.0; |
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| 139 | GLfloat VP[3]; |
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| 140 | GLfloat n_dot_VP; |
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| 141 | GLfloat *h; |
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| 142 | GLfloat diffuseContrib[3], specularContrib[3]; |
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| 143 | GLboolean normalized; |
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| 144 | |||
| 145 | if (!(light->_Flags & LIGHT_POSITIONAL)) { |
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| 146 | COPY_3V(VP, light->_VP_inf_norm); |
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| 147 | attenuation = light->_VP_inf_spot_attenuation; |
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| 148 | } |
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| 149 | else { |
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| 150 | GLfloat d; |
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| 151 | |||
| 152 | SUB_3V(VP, light->_Position, vertex); |
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| 153 | d = (GLfloat) LEN_3FV( VP ); |
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| 154 | |||
| 155 | if ( d > 1e-6) { |
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| 156 | GLfloat invd = 1.0F / d; |
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| 157 | SELF_SCALE_SCALAR_3V(VP, invd); |
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| 158 | } |
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| 159 | attenuation = 1.0F / (light->ConstantAttenuation + d * |
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| 160 | (light->LinearAttenuation + d * |
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| 161 | light->QuadraticAttenuation)); |
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| 162 | |||
| 163 | if (light->_Flags & LIGHT_SPOT) { |
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| 164 | GLfloat PV_dot_dir = - DOT3(VP, light->_NormDirection); |
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| 165 | |||
| 166 | if (PV_dot_dir<light->_CosCutoff) { |
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| 167 | continue; |
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| 168 | } |
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| 169 | else { |
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| 170 | double x = PV_dot_dir * (EXP_TABLE_SIZE-1); |
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| 171 | int k = (int) x; |
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| 172 | GLfloat spot = (GLfloat) (light->_SpotExpTable[k][0] |
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| 173 | + (x-k)*light->_SpotExpTable[k][1]); |
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| 174 | attenuation *= spot; |
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| 175 | } |
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| 176 | } |
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| 177 | } |
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| 178 | |||
| 179 | if (attenuation < 1e-3) |
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| 180 | continue; |
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| 181 | |||
| 182 | n_dot_VP = DOT3( normal, VP ); |
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| 183 | |||
| 184 | if (n_dot_VP < 0.0F) { |
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| 185 | ACC_SCALE_SCALAR_3V(diffuseColor, attenuation, light->_MatAmbient[0]); |
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| 186 | continue; |
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| 187 | } |
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| 188 | |||
| 189 | COPY_3V(diffuseContrib, light->_MatAmbient[0]); |
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| 190 | ACC_SCALE_SCALAR_3V(diffuseContrib, n_dot_VP, light->_MatDiffuse[0]); |
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| 191 | diffuse += n_dot_VP * light->_dli * attenuation; |
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| 192 | ASSIGN_3V(specularContrib, 0.0, 0.0, 0.0); |
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| 193 | |||
| 194 | { |
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| 195 | if (ctx->Light.Model.LocalViewer) { |
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| 196 | GLfloat v[3]; |
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| 197 | COPY_3V(v, vertex); |
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| 198 | NORMALIZE_3FV(v); |
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| 199 | SUB_3V(VP, VP, v); |
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| 200 | h = VP; |
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| 201 | normalized = 0; |
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| 202 | } |
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| 203 | else if (light->_Flags & LIGHT_POSITIONAL) { |
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| 204 | h = VP; |
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| 205 | ACC_3V(h, ctx->_EyeZDir); |
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| 206 | normalized = 0; |
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| 207 | } |
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| 208 | else { |
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| 209 | h = light->_h_inf_norm; |
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| 210 | normalized = 1; |
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| 211 | } |
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| 212 | |||
| 213 | n_dot_h = DOT3(normal, h); |
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| 214 | |||
| 215 | if (n_dot_h > 0.0F) { |
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| 216 | const struct gl_material *mat = &ctx->Light.Material[0]; |
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| 217 | GLfloat spec_coef; |
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| 218 | GLfloat shininess = mat->Shininess; |
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| 219 | |||
| 220 | if (!normalized) { |
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| 221 | n_dot_h *= n_dot_h; |
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| 222 | n_dot_h /= LEN_SQUARED_3FV( h ); |
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| 223 | shininess *= .5; |
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| 224 | } |
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| 225 | |||
| 226 | GET_SHINE_TAB_ENTRY( ctx->_ShineTable[0], n_dot_h, spec_coef ); |
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| 227 | |||
| 228 | if (spec_coef > 1.0e-10) { |
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| 229 | if (ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR) { |
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| 230 | ACC_SCALE_SCALAR_3V( specularContrib, spec_coef, |
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| 231 | light->_MatSpecular[0]); |
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| 232 | } |
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| 233 | else { |
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| 234 | ACC_SCALE_SCALAR_3V( diffuseContrib, spec_coef, |
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| 235 | light->_MatSpecular[0]); |
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| 236 | } |
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| 237 | specular += spec_coef * light->_sli * attenuation; |
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| 238 | } |
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| 239 | } |
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| 240 | } |
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| 241 | |||
| 242 | ACC_SCALE_SCALAR_3V( diffuseColor, attenuation, diffuseContrib ); |
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| 243 | ACC_SCALE_SCALAR_3V( specularColor, attenuation, specularContrib ); |
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| 244 | } |
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| 245 | |||
| 246 | if (ctx->Visual.rgbMode) { |
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| 247 | Rcolor[0] = CLAMP(diffuseColor[0], 0.0F, 1.0F); |
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| 248 | Rcolor[1] = CLAMP(diffuseColor[1], 0.0F, 1.0F); |
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| 249 | Rcolor[2] = CLAMP(diffuseColor[2], 0.0F, 1.0F); |
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| 250 | Rcolor[3] = CLAMP(diffuseColor[3], 0.0F, 1.0F); |
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| 251 | Rspec[0] = CLAMP(specularColor[0], 0.0F, 1.0F); |
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| 252 | Rspec[1] = CLAMP(specularColor[1], 0.0F, 1.0F); |
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| 253 | Rspec[2] = CLAMP(specularColor[2], 0.0F, 1.0F); |
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| 254 | Rspec[3] = CLAMP(specularColor[3], 0.0F, 1.0F); |
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| 255 | } |
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| 256 | else { |
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| 257 | struct gl_material *mat = &ctx->Light.Material[0]; |
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| 258 | GLfloat d_a = mat->DiffuseIndex - mat->AmbientIndex; |
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| 259 | GLfloat s_a = mat->SpecularIndex - mat->AmbientIndex; |
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| 260 | GLfloat ind = mat->AmbientIndex |
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| 261 | + diffuse * (1.0F-specular) * d_a |
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| 262 | + specular * s_a; |
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| 263 | if (ind > mat->SpecularIndex) { |
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| 264 | ind = mat->SpecularIndex; |
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| 265 | } |
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| 266 | *Rindex = (GLuint) (GLint) ind; |
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| 267 | } |
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| 268 | |||
| 269 | } |
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| 270 | |||
| 271 | /* |
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| 272 | * Caller: context->API.RasterPos4f |
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| 273 | */ |
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| 274 | static void |
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| 275 | raster_pos4f(GLcontext *ctx, GLfloat x, GLfloat y, GLfloat z, GLfloat w) |
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| 276 | { |
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| 277 | GLfloat v[4], eye[4], clip[4], ndc[3], d; |
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| 278 | ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
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| 279 | FLUSH_CURRENT(ctx, 0); |
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| 280 | |||
| 281 | if (ctx->NewState) |
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| 282 | _mesa_update_state( ctx ); |
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| 283 | |||
| 284 | ASSIGN_4V( v, x, y, z, w ); |
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| 285 | TRANSFORM_POINT( eye, ctx->ModelviewMatrixStack.Top->m, v ); |
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| 286 | |||
| 287 | /* raster color */ |
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| 288 | if (ctx->Light.Enabled) { |
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| 289 | GLfloat *norm, eyenorm[3]; |
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| 290 | GLfloat *objnorm = ctx->Current.Attrib[VERT_ATTRIB_NORMAL]; |
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| 291 | |||
| 292 | if (ctx->_NeedEyeCoords) { |
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| 293 | GLfloat *inv = ctx->ModelviewMatrixStack.Top->inv; |
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| 294 | TRANSFORM_NORMAL( eyenorm, objnorm, inv ); |
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| 295 | norm = eyenorm; |
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| 296 | } |
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| 297 | else { |
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| 298 | norm = objnorm; |
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| 299 | } |
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| 300 | |||
| 301 | shade_rastpos( ctx, v, norm, |
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| 302 | ctx->Current.RasterColor, |
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| 303 | ctx->Current.RasterSecondaryColor, |
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| 304 | &ctx->Current.RasterIndex ); |
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| 305 | |||
| 306 | } |
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| 307 | else { |
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| 308 | /* use current color or index */ |
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| 309 | if (ctx->Visual.rgbMode) { |
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| 310 | COPY_4FV(ctx->Current.RasterColor, |
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| 311 | ctx->Current.Attrib[VERT_ATTRIB_COLOR0]); |
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| 312 | COPY_4FV(ctx->Current.RasterSecondaryColor, |
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| 313 | ctx->Current.Attrib[VERT_ATTRIB_COLOR1]); |
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| 314 | } |
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| 315 | else { |
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| 316 | ctx->Current.RasterIndex = ctx->Current.Index; |
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| 317 | } |
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| 318 | } |
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| 319 | |||
| 320 | /* compute raster distance */ |
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| 321 | if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT) |
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| 322 | ctx->Current.RasterDistance = ctx->Current.Attrib[VERT_ATTRIB_FOG][0]; |
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| 323 | else |
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| 324 | ctx->Current.RasterDistance = (GLfloat) |
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| 325 | GL_SQRT( eye[0]*eye[0] + eye[1]*eye[1] + eye[2]*eye[2] ); |
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| 326 | |||
| 327 | /* apply projection matrix: clip = Proj * eye */ |
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| 328 | TRANSFORM_POINT( clip, ctx->ProjectionMatrixStack.Top->m, eye ); |
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| 329 | |||
| 330 | /* clip to view volume */ |
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| 331 | if (ctx->Transform.RasterPositionUnclipped) { |
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| 332 | /* GL_IBM_rasterpos_clip: only clip against Z */ |
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| 333 | if (viewclip_point_z(clip) == 0) |
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| 334 | ctx->Current.RasterPosValid = GL_FALSE; |
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| 335 | } |
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| 336 | else if (viewclip_point(clip) == 0) { |
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| 337 | /* Normal OpenGL behaviour */ |
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| 338 | ctx->Current.RasterPosValid = GL_FALSE; |
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| 339 | return; |
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| 340 | } |
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| 341 | |||
| 342 | /* clip to user clipping planes */ |
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| 343 | if (ctx->Transform.ClipPlanesEnabled && !userclip_point(ctx, clip)) { |
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| 344 | ctx->Current.RasterPosValid = GL_FALSE; |
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| 345 | return; |
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| 346 | } |
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| 347 | |||
| 348 | /* ndc = clip / W */ |
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| 349 | ASSERT( clip[3]!=0.0 ); |
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| 350 | d = 1.0F / clip[3]; |
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| 351 | ndc[0] = clip[0] * d; |
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| 352 | ndc[1] = clip[1] * d; |
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| 353 | ndc[2] = clip[2] * d; |
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| 354 | |||
| 355 | ctx->Current.RasterPos[0] = (ndc[0] * ctx->Viewport._WindowMap.m[MAT_SX] + |
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| 356 | ctx->Viewport._WindowMap.m[MAT_TX]); |
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| 357 | ctx->Current.RasterPos[1] = (ndc[1] * ctx->Viewport._WindowMap.m[MAT_SY] + |
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| 358 | ctx->Viewport._WindowMap.m[MAT_TY]); |
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| 359 | ctx->Current.RasterPos[2] = (ndc[2] * ctx->Viewport._WindowMap.m[MAT_SZ] + |
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| 360 | ctx->Viewport._WindowMap.m[MAT_TZ]) / ctx->DepthMaxF; |
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| 361 | ctx->Current.RasterPos[3] = clip[3]; |
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| 362 | ctx->Current.RasterPosValid = GL_TRUE; |
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| 363 | |||
| 364 | { |
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| 365 | GLuint texSet; |
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| 366 | for (texSet = 0; texSet < ctx->Const.MaxTextureUnits; texSet++) { |
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| 367 | COPY_4FV( ctx->Current.RasterTexCoords[texSet], |
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| 368 | ctx->Current.Attrib[VERT_ATTRIB_TEX0 + texSet] ); |
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| 369 | } |
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| 370 | } |
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| 371 | |||
| 372 | if (ctx->RenderMode==GL_SELECT) { |
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| 373 | _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] ); |
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| 374 | } |
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| 375 | |||
| 376 | } |
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| 377 | |||
| 378 | |||
| 379 | void |
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| 380 | _mesa_RasterPos2d(GLdouble x, GLdouble y) |
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| 381 | { |
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| 382 | _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F); |
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| 383 | } |
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| 384 | |||
| 385 | void |
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| 386 | _mesa_RasterPos2f(GLfloat x, GLfloat y) |
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| 387 | { |
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| 388 | _mesa_RasterPos4f(x, y, 0.0F, 1.0F); |
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| 389 | } |
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| 390 | |||
| 391 | void |
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| 392 | _mesa_RasterPos2i(GLint x, GLint y) |
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| 393 | { |
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| 394 | _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F); |
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| 395 | } |
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| 396 | |||
| 397 | void |
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| 398 | _mesa_RasterPos2s(GLshort x, GLshort y) |
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| 399 | { |
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| 400 | _mesa_RasterPos4f(x, y, 0.0F, 1.0F); |
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| 401 | } |
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| 402 | |||
| 403 | void |
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| 404 | _mesa_RasterPos3d(GLdouble x, GLdouble y, GLdouble z) |
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| 405 | { |
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| 406 | _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); |
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| 407 | } |
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| 408 | |||
| 409 | void |
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| 410 | _mesa_RasterPos3f(GLfloat x, GLfloat y, GLfloat z) |
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| 411 | { |
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| 412 | _mesa_RasterPos4f(x, y, z, 1.0F); |
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| 413 | } |
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| 414 | |||
| 415 | void |
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| 416 | _mesa_RasterPos3i(GLint x, GLint y, GLint z) |
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| 417 | { |
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| 418 | _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); |
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| 419 | } |
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| 420 | |||
| 421 | void |
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| 422 | _mesa_RasterPos3s(GLshort x, GLshort y, GLshort z) |
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| 423 | { |
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| 424 | _mesa_RasterPos4f(x, y, z, 1.0F); |
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| 425 | } |
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| 426 | |||
| 427 | void |
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| 428 | _mesa_RasterPos4d(GLdouble x, GLdouble y, GLdouble z, GLdouble w) |
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| 429 | { |
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| 430 | _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w); |
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| 431 | } |
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| 432 | |||
| 433 | void |
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| 434 | _mesa_RasterPos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w) |
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| 435 | { |
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| 436 | GET_CURRENT_CONTEXT(ctx); |
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| 437 | raster_pos4f(ctx, x, y, z, w); |
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| 438 | } |
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| 439 | |||
| 440 | void |
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| 441 | _mesa_RasterPos4i(GLint x, GLint y, GLint z, GLint w) |
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| 442 | { |
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| 443 | _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w); |
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| 444 | } |
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| 445 | |||
| 446 | void |
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| 447 | _mesa_RasterPos4s(GLshort x, GLshort y, GLshort z, GLshort w) |
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| 448 | { |
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| 449 | _mesa_RasterPos4f(x, y, z, w); |
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| 450 | } |
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| 451 | |||
| 452 | void |
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| 453 | _mesa_RasterPos2dv(const GLdouble *v) |
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| 454 | { |
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| 455 | _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); |
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| 456 | } |
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| 457 | |||
| 458 | void |
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| 459 | _mesa_RasterPos2fv(const GLfloat *v) |
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| 460 | { |
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| 461 | _mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F); |
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| 462 | } |
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| 463 | |||
| 464 | void |
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| 465 | _mesa_RasterPos2iv(const GLint *v) |
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| 466 | { |
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| 467 | _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); |
||
| 468 | } |
||
| 469 | |||
| 470 | void |
||
| 471 | _mesa_RasterPos2sv(const GLshort *v) |
||
| 472 | { |
||
| 473 | _mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F); |
||
| 474 | } |
||
| 475 | |||
| 476 | void |
||
| 477 | _mesa_RasterPos3dv(const GLdouble *v) |
||
| 478 | { |
||
| 479 | _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); |
||
| 480 | } |
||
| 481 | |||
| 482 | void |
||
| 483 | _mesa_RasterPos3fv(const GLfloat *v) |
||
| 484 | { |
||
| 485 | _mesa_RasterPos4f(v[0], v[1], v[2], 1.0F); |
||
| 486 | } |
||
| 487 | |||
| 488 | void |
||
| 489 | _mesa_RasterPos3iv(const GLint *v) |
||
| 490 | { |
||
| 491 | _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); |
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| 492 | } |
||
| 493 | |||
| 494 | void |
||
| 495 | _mesa_RasterPos3sv(const GLshort *v) |
||
| 496 | { |
||
| 497 | _mesa_RasterPos4f(v[0], v[1], v[2], 1.0F); |
||
| 498 | } |
||
| 499 | |||
| 500 | void |
||
| 501 | _mesa_RasterPos4dv(const GLdouble *v) |
||
| 502 | { |
||
| 503 | _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], |
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| 504 | (GLfloat) v[2], (GLfloat) v[3]); |
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| 505 | } |
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| 506 | |||
| 507 | void |
||
| 508 | _mesa_RasterPos4fv(const GLfloat *v) |
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| 509 | { |
||
| 510 | _mesa_RasterPos4f(v[0], v[1], v[2], v[3]); |
||
| 511 | } |
||
| 512 | |||
| 513 | void |
||
| 514 | _mesa_RasterPos4iv(const GLint *v) |
||
| 515 | { |
||
| 516 | _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], |
||
| 517 | (GLfloat) v[2], (GLfloat) v[3]); |
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| 518 | } |
||
| 519 | |||
| 520 | void |
||
| 521 | _mesa_RasterPos4sv(const GLshort *v) |
||
| 522 | { |
||
| 523 | _mesa_RasterPos4f(v[0], v[1], v[2], v[3]); |
||
| 524 | } |
||
| 525 | |||
| 526 | |||
| 527 | /**********************************************************************/ |
||
| 528 | /*** GL_ARB_window_pos / GL_MESA_window_pos ***/ |
||
| 529 | /**********************************************************************/ |
||
| 530 | |||
| 531 | static void |
||
| 532 | window_pos3f(GLfloat x, GLfloat y, GLfloat z) |
||
| 533 | { |
||
| 534 | GET_CURRENT_CONTEXT(ctx); |
||
| 535 | GLfloat z2; |
||
| 536 | |||
| 537 | ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
||
| 538 | FLUSH_CURRENT(ctx, 0); |
||
| 539 | |||
| 540 | z2 = CLAMP(z, 0.0F, 1.0F) * (ctx->Viewport.Far - ctx->Viewport.Near) |
||
| 541 | + ctx->Viewport.Near; |
||
| 542 | |||
| 543 | /* set raster position */ |
||
| 544 | ctx->Current.RasterPos[0] = x; |
||
| 545 | ctx->Current.RasterPos[1] = y; |
||
| 546 | ctx->Current.RasterPos[2] = z2; |
||
| 547 | ctx->Current.RasterPos[3] = 1.0F; |
||
| 548 | |||
| 549 | ctx->Current.RasterPosValid = GL_TRUE; |
||
| 550 | |||
| 551 | if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT) |
||
| 552 | ctx->Current.RasterDistance = ctx->Current.Attrib[VERT_ATTRIB_FOG][0]; |
||
| 553 | else |
||
| 554 | ctx->Current.RasterDistance = 0.0; |
||
| 555 | |||
| 556 | /* raster color = current color or index */ |
||
| 557 | if (ctx->Visual.rgbMode) { |
||
| 558 | ctx->Current.RasterColor[0] |
||
| 559 | = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][0], 0.0F, 1.0F); |
||
| 560 | ctx->Current.RasterColor[1] |
||
| 561 | = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][1], 0.0F, 1.0F); |
||
| 562 | ctx->Current.RasterColor[2] |
||
| 563 | = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][2], 0.0F, 1.0F); |
||
| 564 | ctx->Current.RasterColor[3] |
||
| 565 | = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][3], 0.0F, 1.0F); |
||
| 566 | ctx->Current.RasterSecondaryColor[0] |
||
| 567 | = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][0], 0.0F, 1.0F); |
||
| 568 | ctx->Current.RasterSecondaryColor[1] |
||
| 569 | = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][1], 0.0F, 1.0F); |
||
| 570 | ctx->Current.RasterSecondaryColor[2] |
||
| 571 | = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][2], 0.0F, 1.0F); |
||
| 572 | ctx->Current.RasterSecondaryColor[3] |
||
| 573 | = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][3], 0.0F, 1.0F); |
||
| 574 | } |
||
| 575 | else { |
||
| 576 | ctx->Current.RasterIndex = ctx->Current.Index; |
||
| 577 | } |
||
| 578 | |||
| 579 | /* raster texcoord = current texcoord */ |
||
| 580 | { |
||
| 581 | GLuint texSet; |
||
| 582 | for (texSet = 0; texSet < ctx->Const.MaxTextureUnits; texSet++) { |
||
| 583 | COPY_4FV( ctx->Current.RasterTexCoords[texSet], |
||
| 584 | ctx->Current.Attrib[VERT_ATTRIB_TEX0 + texSet] ); |
||
| 585 | } |
||
| 586 | } |
||
| 587 | |||
| 588 | if (ctx->RenderMode==GL_SELECT) { |
||
| 589 | _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] ); |
||
| 590 | } |
||
| 591 | } |
||
| 592 | |||
| 593 | |||
| 594 | /* This is just to support the GL_MESA_window_pos version */ |
||
| 595 | static void |
||
| 596 | window_pos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w) |
||
| 597 | { |
||
| 598 | GET_CURRENT_CONTEXT(ctx); |
||
| 599 | window_pos3f(x, y, z); |
||
| 600 | ctx->Current.RasterPos[3] = w; |
||
| 601 | } |
||
| 602 | |||
| 603 | |||
| 604 | void |
||
| 605 | _mesa_WindowPos2dMESA(GLdouble x, GLdouble y) |
||
| 606 | { |
||
| 607 | window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F); |
||
| 608 | } |
||
| 609 | |||
| 610 | void |
||
| 611 | _mesa_WindowPos2fMESA(GLfloat x, GLfloat y) |
||
| 612 | { |
||
| 613 | window_pos4f(x, y, 0.0F, 1.0F); |
||
| 614 | } |
||
| 615 | |||
| 616 | void |
||
| 617 | _mesa_WindowPos2iMESA(GLint x, GLint y) |
||
| 618 | { |
||
| 619 | window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F); |
||
| 620 | } |
||
| 621 | |||
| 622 | void |
||
| 623 | _mesa_WindowPos2sMESA(GLshort x, GLshort y) |
||
| 624 | { |
||
| 625 | window_pos4f(x, y, 0.0F, 1.0F); |
||
| 626 | } |
||
| 627 | |||
| 628 | void |
||
| 629 | _mesa_WindowPos3dMESA(GLdouble x, GLdouble y, GLdouble z) |
||
| 630 | { |
||
| 631 | window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); |
||
| 632 | } |
||
| 633 | |||
| 634 | void |
||
| 635 | _mesa_WindowPos3fMESA(GLfloat x, GLfloat y, GLfloat z) |
||
| 636 | { |
||
| 637 | window_pos4f(x, y, z, 1.0F); |
||
| 638 | } |
||
| 639 | |||
| 640 | void |
||
| 641 | _mesa_WindowPos3iMESA(GLint x, GLint y, GLint z) |
||
| 642 | { |
||
| 643 | window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); |
||
| 644 | } |
||
| 645 | |||
| 646 | void |
||
| 647 | _mesa_WindowPos3sMESA(GLshort x, GLshort y, GLshort z) |
||
| 648 | { |
||
| 649 | window_pos4f(x, y, z, 1.0F); |
||
| 650 | } |
||
| 651 | |||
| 652 | void |
||
| 653 | _mesa_WindowPos4dMESA(GLdouble x, GLdouble y, GLdouble z, GLdouble w) |
||
| 654 | { |
||
| 655 | window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w); |
||
| 656 | } |
||
| 657 | |||
| 658 | void |
||
| 659 | _mesa_WindowPos4fMESA(GLfloat x, GLfloat y, GLfloat z, GLfloat w) |
||
| 660 | { |
||
| 661 | window_pos4f(x, y, z, w); |
||
| 662 | } |
||
| 663 | |||
| 664 | void |
||
| 665 | _mesa_WindowPos4iMESA(GLint x, GLint y, GLint z, GLint w) |
||
| 666 | { |
||
| 667 | window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w); |
||
| 668 | } |
||
| 669 | |||
| 670 | void |
||
| 671 | _mesa_WindowPos4sMESA(GLshort x, GLshort y, GLshort z, GLshort w) |
||
| 672 | { |
||
| 673 | window_pos4f(x, y, z, w); |
||
| 674 | } |
||
| 675 | |||
| 676 | void |
||
| 677 | _mesa_WindowPos2dvMESA(const GLdouble *v) |
||
| 678 | { |
||
| 679 | window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); |
||
| 680 | } |
||
| 681 | |||
| 682 | void |
||
| 683 | _mesa_WindowPos2fvMESA(const GLfloat *v) |
||
| 684 | { |
||
| 685 | window_pos4f(v[0], v[1], 0.0F, 1.0F); |
||
| 686 | } |
||
| 687 | |||
| 688 | void |
||
| 689 | _mesa_WindowPos2ivMESA(const GLint *v) |
||
| 690 | { |
||
| 691 | window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); |
||
| 692 | } |
||
| 693 | |||
| 694 | void |
||
| 695 | _mesa_WindowPos2svMESA(const GLshort *v) |
||
| 696 | { |
||
| 697 | window_pos4f(v[0], v[1], 0.0F, 1.0F); |
||
| 698 | } |
||
| 699 | |||
| 700 | void |
||
| 701 | _mesa_WindowPos3dvMESA(const GLdouble *v) |
||
| 702 | { |
||
| 703 | window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); |
||
| 704 | } |
||
| 705 | |||
| 706 | void |
||
| 707 | _mesa_WindowPos3fvMESA(const GLfloat *v) |
||
| 708 | { |
||
| 709 | window_pos4f(v[0], v[1], v[2], 1.0); |
||
| 710 | } |
||
| 711 | |||
| 712 | void |
||
| 713 | _mesa_WindowPos3ivMESA(const GLint *v) |
||
| 714 | { |
||
| 715 | window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); |
||
| 716 | } |
||
| 717 | |||
| 718 | void |
||
| 719 | _mesa_WindowPos3svMESA(const GLshort *v) |
||
| 720 | { |
||
| 721 | window_pos4f(v[0], v[1], v[2], 1.0F); |
||
| 722 | } |
||
| 723 | |||
| 724 | void |
||
| 725 | _mesa_WindowPos4dvMESA(const GLdouble *v) |
||
| 726 | { |
||
| 727 | window_pos4f((GLfloat) v[0], (GLfloat) v[1], |
||
| 728 | (GLfloat) v[2], (GLfloat) v[3]); |
||
| 729 | } |
||
| 730 | |||
| 731 | void |
||
| 732 | _mesa_WindowPos4fvMESA(const GLfloat *v) |
||
| 733 | { |
||
| 734 | window_pos4f(v[0], v[1], v[2], v[3]); |
||
| 735 | } |
||
| 736 | |||
| 737 | void |
||
| 738 | _mesa_WindowPos4ivMESA(const GLint *v) |
||
| 739 | { |
||
| 740 | window_pos4f((GLfloat) v[0], (GLfloat) v[1], |
||
| 741 | (GLfloat) v[2], (GLfloat) v[3]); |
||
| 742 | } |
||
| 743 | |||
| 744 | void |
||
| 745 | _mesa_WindowPos4svMESA(const GLshort *v) |
||
| 746 | { |
||
| 747 | window_pos4f(v[0], v[1], v[2], v[3]); |
||
| 748 | } |
||
| 749 | |||
| 750 | |||
| 751 | |||
| 752 | #if 0 |
||
| 753 | |||
| 754 | /* |
||
| 755 | * OpenGL implementation of glWindowPos*MESA() |
||
| 756 | */ |
||
| 757 | void glWindowPos4fMESA( GLfloat x, GLfloat y, GLfloat z, GLfloat w ) |
||
| 758 | { |
||
| 759 | GLfloat fx, fy; |
||
| 760 | |||
| 761 | /* Push current matrix mode and viewport attributes */ |
||
| 762 | glPushAttrib( GL_TRANSFORM_BIT | GL_VIEWPORT_BIT ); |
||
| 763 | |||
| 764 | /* Setup projection parameters */ |
||
| 765 | glMatrixMode( GL_PROJECTION ); |
||
| 766 | glPushMatrix(); |
||
| 767 | glLoadIdentity(); |
||
| 768 | glMatrixMode( GL_MODELVIEW ); |
||
| 769 | glPushMatrix(); |
||
| 770 | glLoadIdentity(); |
||
| 771 | |||
| 772 | glDepthRange( z, z ); |
||
| 773 | glViewport( (int) x - 1, (int) y - 1, 2, 2 ); |
||
| 774 | |||
| 775 | /* set the raster (window) position */ |
||
| 776 | fx = x - (int) x; |
||
| 777 | fy = y - (int) y; |
||
| 778 | glRasterPos4f( fx, fy, 0.0, w ); |
||
| 779 | |||
| 780 | /* restore matrices, viewport and matrix mode */ |
||
| 781 | glPopMatrix(); |
||
| 782 | glMatrixMode( GL_PROJECTION ); |
||
| 783 | glPopMatrix(); |
||
| 784 | |||
| 785 | glPopAttrib(); |
||
| 786 | } |
||
| 787 | |||
| 788 | #endif |