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Diffstat (limited to 'src/glx/x11/eval.c')
| -rw-r--r-- | src/glx/x11/eval.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/glx/x11/eval.c b/src/glx/x11/eval.c new file mode 100644 index 0000000000..aba4b5767c --- /dev/null +++ b/src/glx/x11/eval.c @@ -0,0 +1,162 @@ +/* $XFree86$ */ +/* +** 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; + } +} |