xorg-server-1.4/hw/dmx/glxProxy/render2swap.c

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 **
  34 */
  35
  36 /* #define NEED_REPLIES */
  37 #include "glxserver.h"
  38 #include "unpack.h"
  39 #include "g_disptab.h"
  40
  41 GLint __glEvalComputeK(GLenum target)
  42 {
  43     switch (target) {
  44     case GL_MAP1_VERTEX_4:
  45     case GL_MAP1_COLOR_4:
  46     case GL_MAP1_TEXTURE_COORD_4:
  47     case GL_MAP2_VERTEX_4:
  48     case GL_MAP2_COLOR_4:
  49     case GL_MAP2_TEXTURE_COORD_4:
  50         return 4;
  51     case GL_MAP1_VERTEX_3:
  52     case GL_MAP1_TEXTURE_COORD_3:
  53     case GL_MAP1_NORMAL:
  54     case GL_MAP2_VERTEX_3:
  55     case GL_MAP2_TEXTURE_COORD_3:
  56     case GL_MAP2_NORMAL:
  57         return 3;
  58     case GL_MAP1_TEXTURE_COORD_2:
  59     case GL_MAP2_TEXTURE_COORD_2:
  60         return 2;
  61     case GL_MAP1_TEXTURE_COORD_1:
  62     case GL_MAP2_TEXTURE_COORD_1:
  63     case GL_MAP1_INDEX:
  64     case GL_MAP2_INDEX:
  65         return 1;
  66     default:
  67         return 0;
  68     }
  69 }
  70
  71 void __glXDispSwap_Map1f(GLbyte *pc)
  72 {
  73     GLint order, k;
  74     GLfloat u1, u2, *points;
  75     GLenum target;
  76     GLint compsize;
  77     __GLX_DECLARE_SWAP_VARIABLES;
  78
  79     __GLX_SWAP_INT(pc + 0);
  80     __GLX_SWAP_INT(pc + 12);
  81     __GLX_SWAP_FLOAT(pc + 4);
  82     __GLX_SWAP_FLOAT(pc + 8);
  83
  84     target = *(GLenum *)(pc + 0);
  85     order = *(GLint *)(pc + 12);
  86     u1 = *(GLfloat *)(pc + 4);
  87     u2 = *(GLfloat *)(pc + 8);
  88     points = (GLfloat *)(pc + 16);
  89     k = __glEvalComputeK(target);
  90
  91     if (order <= 0 || k < 0) {
  92         /* Erroneous command. */
  93         compsize = 0;
  94     } else {
  95         compsize = order * k;
  96     }
  97     __GLX_SWAP_FLOAT_ARRAY(points, compsize);
  98
  99 }
 100
 101 void __glXDispSwap_Map2f(GLbyte *pc)
 102 {
 103     GLint uorder, vorder, ustride, vstride, k;
 104     GLfloat u1, u2, v1, v2, *points;
 105     GLenum target;
 106     GLint compsize;
 107     __GLX_DECLARE_SWAP_VARIABLES;
 108
 109     __GLX_SWAP_INT(pc + 0);
 110     __GLX_SWAP_INT(pc + 12);
 111     __GLX_SWAP_INT(pc + 24);
 112     __GLX_SWAP_FLOAT(pc + 4);
 113     __GLX_SWAP_FLOAT(pc + 8);
 114     __GLX_SWAP_FLOAT(pc + 16);
 115     __GLX_SWAP_FLOAT(pc + 20);
 116
 117     target = *(GLenum *)(pc + 0);
 118     uorder = *(GLint *)(pc + 12);
 119     vorder = *(GLint *)(pc + 24);
 120     u1 = *(GLfloat *)(pc + 4);
 121     u2 = *(GLfloat *)(pc + 8);
 122     v1 = *(GLfloat *)(pc + 16);
 123     v2 = *(GLfloat *)(pc + 20);
 124     points = (GLfloat *)(pc + 28);
 125
 126     k = __glEvalComputeK(target);
 127     ustride = vorder * k;
 128     vstride = k;
 129
 130     if (vorder <= 0 || uorder <= 0 || k < 0) {
 131         /* Erroneous command. */
 132         compsize = 0;
 133     } else {
 134         compsize = uorder * vorder * k;
 135     }
 136     __GLX_SWAP_FLOAT_ARRAY(points, compsize);
 137
 138 }
 139
 140 void __glXDispSwap_Map1d(GLbyte *pc)
 141 {
 142     GLint order, k, compsize;
 143     GLenum target;
 144     GLdouble u1, u2, *points;
 145     __GLX_DECLARE_SWAP_VARIABLES;
 146
 147     __GLX_SWAP_DOUBLE(pc + 0);
 148     __GLX_SWAP_DOUBLE(pc + 8);
 149     __GLX_SWAP_INT(pc + 16);
 150     __GLX_SWAP_INT(pc + 20);
 151
 152     target = *(GLenum*) (pc + 16);
 153     order = *(GLint*) (pc + 20);
 154     k = __glEvalComputeK(target);
 155     if (order <= 0 || k < 0) {
 156         /* Erroneous command. */
 157         compsize = 0;
 158     } else {
 159         compsize = order * k;
 160     }
 161     __GLX_GET_DOUBLE(u1,pc);
 162     __GLX_GET_DOUBLE(u2,pc+8);
 163     __GLX_SWAP_DOUBLE_ARRAY(pc+24, compsize);
 164     pc += 24;
 165
 166 #ifdef __GLX_ALIGN64
 167     if (((unsigned long)pc) & 7) {
 168         /*
 169         ** Copy the doubles up 4 bytes, trashing the command but aligning
 170         ** the data in the process
 171         */
 172         __GLX_MEM_COPY(pc-4, pc, compsize*8);
 173         points = (GLdouble*) (pc - 4);
 174     } else {
 175         points = (GLdouble*) pc;
 176     }
 177 #else
 178     points = (GLdouble*) pc;
 179 #endif
 180 }
 181
 182 void __glXDispSwap_Map2d(GLbyte *pc)
 183 {
 184     GLdouble u1, u2, v1, v2, *points;
 185     GLint uorder, vorder, ustride, vstride, k, compsize;
 186     GLenum target;
 187     __GLX_DECLARE_SWAP_VARIABLES;
 188
 189     __GLX_SWAP_DOUBLE(pc + 0);
 190     __GLX_SWAP_DOUBLE(pc + 8);
 191     __GLX_SWAP_DOUBLE(pc + 16);
 192     __GLX_SWAP_DOUBLE(pc + 24);
 193     __GLX_SWAP_INT(pc + 32);
 194     __GLX_SWAP_INT(pc + 36);
 195     __GLX_SWAP_INT(pc + 40);
 196
 197     target = *(GLenum *)(pc + 32);
 198     uorder = *(GLint *)(pc + 36);
 199     vorder = *(GLint *)(pc + 40);
 200     k = __glEvalComputeK(target);
 201     if (vorder <= 0 || uorder <= 0 || k < 0) {
 202         /* Erroneous command. */
 203         compsize = 0;
 204     } else {
 205         compsize = uorder * vorder * k;
 206     }
 207     __GLX_GET_DOUBLE(u1,pc);
 208     __GLX_GET_DOUBLE(u2,pc+8);
 209     __GLX_GET_DOUBLE(v1,pc+16);
 210     __GLX_GET_DOUBLE(v2,pc+24);
 211     __GLX_SWAP_DOUBLE_ARRAY(pc+44, compsize);
 212     pc += 44;
 213     ustride = vorder * k;
 214     vstride = k;
 215
 216 #ifdef __GLX_ALIGN64
 217     if (((unsigned long)pc) & 7) {
 218         /*
 219         ** Copy the doubles up 4 bytes, trashing the command but aligning
 220         ** the data in the process
 221         */
 222         __GLX_MEM_COPY(pc-4, pc, compsize*8);
 223         points = (GLdouble*) (pc - 4);
 224     } else {
 225         points = (GLdouble*) pc;
 226     }
 227 #else
 228     points = (GLdouble*) pc;
 229 #endif
 230 }
 231
 232 void __glXDispSwap_CallLists(GLbyte *pc)
 233 {
 234     GLenum type;
 235     GLsizei n;
 236     __GLX_DECLARE_SWAP_VARIABLES;
 237
 238     __GLX_SWAP_INT(pc + 4);
 239     __GLX_SWAP_INT(pc + 0);
 240     type = *(GLenum *)(pc + 4);
 241     n = *(GLsizei *)(pc + 0);
 242
 243     switch (type) {
 244       case GL_BYTE:
 245       case GL_UNSIGNED_BYTE:
 246       case GL_2_BYTES:
 247       case GL_3_BYTES:
 248       case GL_4_BYTES:
 249         break;
 250       case GL_SHORT:
 251       case GL_UNSIGNED_SHORT:
 252         __GLX_SWAP_SHORT_ARRAY(pc+8, n);
 253         break;
 254       case GL_INT:
 255       case GL_UNSIGNED_INT:
 256         __GLX_SWAP_INT_ARRAY(pc+8, n);
 257         break;
 258       case GL_FLOAT:
 259         __GLX_SWAP_FLOAT_ARRAY(pc+8, n);
 260         break;
 261     }
 262
 263 }
 264
 265 static void swapArray(GLint numVals, GLenum datatype,
 266                       GLint stride, GLint numVertexes, GLbyte *pc)
 267 {
 268     int i,j;
 269     __GLX_DECLARE_SWAP_VARIABLES;
 270
 271     switch (datatype) {
 272       case GL_BYTE:
 273       case GL_UNSIGNED_BYTE:
 274         /* don't need to swap */
 275         return;
 276       case GL_SHORT:
 277       case GL_UNSIGNED_SHORT:
 278         for (i=0; i<numVertexes; i++) {
 279             GLshort *pVal = (GLshort *) pc;
 280             for (j=0; j<numVals; j++) {
 281                 __GLX_SWAP_SHORT(&pVal[j]);
 282             }
 283             pc += stride;
 284         }
 285         break;
 286       case GL_INT:
 287       case GL_UNSIGNED_INT:
 288         for (i=0; i<numVertexes; i++) {
 289             GLint *pVal = (GLint *) pc;
 290             for (j=0; j<numVals; j++) {
 291                 __GLX_SWAP_INT(&pVal[j]);
 292             }
 293             pc += stride;
 294         }
 295         break;
 296       case GL_FLOAT:
 297         for (i=0; i<numVertexes; i++) {
 298             GLfloat *pVal = (GLfloat *) pc;
 299             for (j=0; j<numVals; j++) {
 300                 __GLX_SWAP_FLOAT(&pVal[j]);
 301             }
 302             pc += stride;
 303         }
 304         break;
 305       case GL_DOUBLE:
 306         for (i=0; i<numVertexes; i++) {
 307             GLdouble *pVal = (GLdouble *) pc;
 308             for (j=0; j<numVals; j++) {
 309                 __GLX_SWAP_DOUBLE(&pVal[j]);
 310             }
 311             pc += stride;
 312         }
 313         break;
 314       default:
 315         return;
 316     }
 317 }
 318
 319 void __glXDispSwap_DrawArrays(GLbyte *pc)
 320 {
 321     __GLXdispatchDrawArraysHeader *hdr = (__GLXdispatchDrawArraysHeader *)pc;
 322     __GLXdispatchDrawArraysComponentHeader *compHeader;
 323     int i;
 324     __GLX_DECLARE_SWAP_VARIABLES;
 325
 326     __GLX_SWAP_INT(&hdr->numVertexes);
 327     __GLX_SWAP_INT(&hdr->numComponents);
 328     __GLX_SWAP_INT(&hdr->primType);
 329
 330     pc += sizeof(__GLXdispatchDrawArraysHeader);
 331     compHeader = (__GLXdispatchDrawArraysComponentHeader *) pc;
 332
 333     /* compute stride (same for all component arrays) */
 334     for (i=0; i<hdr->numComponents; i++) {
 335         __GLX_SWAP_INT(&compHeader[i].datatype);
 336         __GLX_SWAP_INT(&compHeader[i].numVals);
 337         __GLX_SWAP_INT(&compHeader[i].component);
 338
 339     }
 340
 341 }
 342
 343 void __glXDispSwap_DrawArraysEXT(GLbyte *pc)
 344 {
 345 #ifdef XXX_STUB
 346 #endif /*XXX_STUB*/
 347 }