163 lines
4.8 KiB
C
163 lines
4.8 KiB
C
/* $XFree86: xc/lib/GL/glx/eval.c,v 1.3 2001/03/21 16:04:39 dawes Exp $ */
|
|
/*
|
|
** License Applicability. Except to the extent portions of this file are
|
|
** made subject to an alternative license as permitted in the SGI Free
|
|
** Software License B, Version 1.1 (the "License"), the contents of this
|
|
** file are subject only to the provisions of the License. You may not use
|
|
** this file except in compliance with the License. You may obtain a copy
|
|
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
|
|
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
|
|
**
|
|
** http://oss.sgi.com/projects/FreeB
|
|
**
|
|
** Note that, as provided in the License, the Software is distributed on an
|
|
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
|
|
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
|
|
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
|
|
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
|
|
**
|
|
** Original Code. The Original Code is: OpenGL Sample Implementation,
|
|
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
|
|
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
|
|
** Copyright in any portions created by third parties is as indicated
|
|
** elsewhere herein. All Rights Reserved.
|
|
**
|
|
** Additional Notice Provisions: The application programming interfaces
|
|
** established by SGI in conjunction with the Original Code are The
|
|
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
|
|
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
|
|
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
|
|
** Window System(R) (Version 1.3), released October 19, 1998. This software
|
|
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
|
|
** published by SGI, but has not been independently verified as being
|
|
** compliant with the OpenGL(R) version 1.2.1 Specification.
|
|
**
|
|
*/
|
|
|
|
#include "packrender.h"
|
|
|
|
/*
|
|
** Routines to pack evaluator maps into the transport buffer. Maps are
|
|
** allowed to have extra arbitrary data, so these routines extract just
|
|
** the information that the GL needs.
|
|
*/
|
|
|
|
void __glFillMap1f(GLint k, GLint order, GLint stride,
|
|
const GLfloat *points, GLubyte *pc)
|
|
{
|
|
if (stride == k) {
|
|
/* Just copy the data */
|
|
__GLX_PUT_FLOAT_ARRAY(0, points, order * k);
|
|
} else {
|
|
GLint i;
|
|
|
|
for (i = 0; i < order; i++) {
|
|
__GLX_PUT_FLOAT_ARRAY(0, points, k);
|
|
points += stride;
|
|
pc += k * __GLX_SIZE_FLOAT32;
|
|
}
|
|
}
|
|
}
|
|
|
|
void __glFillMap1d(GLint k, GLint order, GLint stride,
|
|
const GLdouble *points, GLubyte *pc)
|
|
{
|
|
if (stride == k) {
|
|
/* Just copy the data */
|
|
__GLX_PUT_DOUBLE_ARRAY(0, points, order * k);
|
|
} else {
|
|
GLint i;
|
|
for (i = 0; i < order; i++) {
|
|
__GLX_PUT_DOUBLE_ARRAY(0, points, k);
|
|
points += stride;
|
|
pc += k * __GLX_SIZE_FLOAT64;
|
|
}
|
|
}
|
|
}
|
|
|
|
void __glFillMap2f(GLint k, GLint majorOrder, GLint minorOrder,
|
|
GLint majorStride, GLint minorStride,
|
|
const GLfloat *points, GLfloat *data)
|
|
{
|
|
GLint i, j, x;
|
|
|
|
if ((minorStride == k) && (majorStride == minorOrder*k)) {
|
|
/* Just copy the data */
|
|
__GLX_MEM_COPY(data, points, majorOrder * majorStride *
|
|
__GLX_SIZE_FLOAT32);
|
|
return;
|
|
}
|
|
for (i = 0; i < majorOrder; i++) {
|
|
for (j = 0; j < minorOrder; j++) {
|
|
for (x = 0; x < k; x++) {
|
|
data[x] = points[x];
|
|
}
|
|
points += minorStride;
|
|
data += k;
|
|
}
|
|
points += majorStride - minorStride * minorOrder;
|
|
}
|
|
}
|
|
|
|
void __glFillMap2d(GLint k, GLint majorOrder, GLint minorOrder,
|
|
GLint majorStride, GLint minorStride,
|
|
const GLdouble *points, GLdouble *data)
|
|
{
|
|
int i,j,x;
|
|
|
|
if ((minorStride == k) && (majorStride == minorOrder*k)) {
|
|
/* Just copy the data */
|
|
__GLX_MEM_COPY(data, points, majorOrder * majorStride *
|
|
__GLX_SIZE_FLOAT64);
|
|
return;
|
|
}
|
|
|
|
#ifdef __GLX_ALIGN64
|
|
x = k * __GLX_SIZE_FLOAT64;
|
|
#endif
|
|
for (i = 0; i<majorOrder; i++) {
|
|
for (j = 0; j<minorOrder; j++) {
|
|
#ifdef __GLX_ALIGN64
|
|
__GLX_MEM_COPY(data, points, x);
|
|
#else
|
|
for (x = 0; x<k; x++) {
|
|
data[x] = points[x];
|
|
}
|
|
#endif
|
|
points += minorStride;
|
|
data += k;
|
|
}
|
|
points += majorStride - minorStride * minorOrder;
|
|
}
|
|
}
|
|
|
|
GLint __glEvalComputeK(GLenum target)
|
|
{
|
|
switch(target) {
|
|
case GL_MAP1_VERTEX_4:
|
|
case GL_MAP1_COLOR_4:
|
|
case GL_MAP1_TEXTURE_COORD_4:
|
|
case GL_MAP2_VERTEX_4:
|
|
case GL_MAP2_COLOR_4:
|
|
case GL_MAP2_TEXTURE_COORD_4:
|
|
return 4;
|
|
case GL_MAP1_VERTEX_3:
|
|
case GL_MAP1_TEXTURE_COORD_3:
|
|
case GL_MAP1_NORMAL:
|
|
case GL_MAP2_VERTEX_3:
|
|
case GL_MAP2_TEXTURE_COORD_3:
|
|
case GL_MAP2_NORMAL:
|
|
return 3;
|
|
case GL_MAP1_TEXTURE_COORD_2:
|
|
case GL_MAP2_TEXTURE_COORD_2:
|
|
return 2;
|
|
case GL_MAP1_TEXTURE_COORD_1:
|
|
case GL_MAP2_TEXTURE_COORD_1:
|
|
case GL_MAP1_INDEX:
|
|
case GL_MAP2_INDEX:
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|