src/glx/x11/eval.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 #include "packrender.h"
  37
  38 /*
  39 ** Routines to pack evaluator maps into the transport buffer.  Maps are
  40 ** allowed to have extra arbitrary data, so these routines extract just
  41 ** the information that the GL needs.
  42 */
  43
  44 void __glFillMap1f(GLint k, GLint order, GLint stride,
  45                    const GLfloat *points, GLubyte *pc)
  46 {
  47     if (stride == k) {
  48         /* Just copy the data */
  49         __GLX_PUT_FLOAT_ARRAY(0, points, order * k);
  50     } else {
  51         GLint i;
  52
  53         for (i = 0; i < order; i++) {
  54             __GLX_PUT_FLOAT_ARRAY(0, points, k);
  55             points += stride;
  56             pc += k * __GLX_SIZE_FLOAT32;
  57         }
  58     }
  59 }
  60
  61 void __glFillMap1d(GLint k, GLint order, GLint stride,
  62                    const GLdouble *points, GLubyte *pc)
  63 {
  64     if (stride == k) {
  65         /* Just copy the data */
  66         __GLX_PUT_DOUBLE_ARRAY(0, points, order * k);
  67     } else {
  68         GLint i;
  69         for (i = 0; i < order; i++) {
  70             __GLX_PUT_DOUBLE_ARRAY(0, points, k);
  71             points += stride;
  72             pc += k * __GLX_SIZE_FLOAT64;
  73         }
  74     }
  75 }
  76
  77 void __glFillMap2f(GLint k, GLint majorOrder, GLint minorOrder,
  78                    GLint majorStride, GLint minorStride,
  79                    const GLfloat *points, GLfloat *data)
  80 {
  81     GLint i, j, x;
  82
  83     if ((minorStride == k) && (majorStride == minorOrder*k)) {
  84         /* Just copy the data */
  85         __GLX_MEM_COPY(data, points, majorOrder * majorStride *
  86                        __GLX_SIZE_FLOAT32);
  87         return;
  88     }
  89     for (i = 0; i < majorOrder; i++) {
  90         for (j = 0; j < minorOrder; j++) {
  91             for (x = 0; x < k; x++) {
  92                 data[x] = points[x];
  93             }
  94             points += minorStride;
  95             data += k;
  96         }
  97         points += majorStride - minorStride * minorOrder;
  98     }
  99 }
 100
 101 void __glFillMap2d(GLint k, GLint majorOrder, GLint minorOrder,
 102                    GLint majorStride, GLint minorStride,
 103                    const GLdouble *points, GLdouble *data)
 104 {
 105     int i,j,x;
 106
 107     if ((minorStride == k) && (majorStride == minorOrder*k)) {
 108         /* Just copy the data */
 109         __GLX_MEM_COPY(data, points, majorOrder * majorStride *
 110                        __GLX_SIZE_FLOAT64);
 111         return;
 112     }
 113
 114 #ifdef __GLX_ALIGN64
 115     x = k * __GLX_SIZE_FLOAT64;
 116 #endif
 117     for (i = 0; i<majorOrder; i++) {
 118         for (j = 0; j<minorOrder; j++) {
 119 #ifdef __GLX_ALIGN64
 120             __GLX_MEM_COPY(data, points, x);
 121 #else
 122             for (x = 0; x<k; x++) {
 123                 data[x] = points[x];
 124             }
 125 #endif
 126             points += minorStride;
 127             data += k;
 128         }
 129         points += majorStride - minorStride * minorOrder;
 130     }
 131 }