1/*
2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
29 */
30
31#include "glxclient.h"
32#include "indirect.h"
33#include "indirect_vertex_array.h"
34
35#ifndef GLX_USE_APPLEGL
36
37/*****************************************************************************/
38
39/**
40 * \name Vertex array pointer bridge functions
41 *
42 * When EXT_vertex_array was moved into the core GL spec, the \c count
43 * parameter was lost.  This libGL really only wants to implement the GL 1.1
44 * version, but we need to support applications that were written to the old
45 * interface.  These bridge functions are part of the glue that makes this
46 * happen.
47 */
48/*@{*/
49void
50__indirect_glColorPointerEXT(GLint size, GLenum type, GLsizei stride,
51                             GLsizei count, const GLvoid * pointer)
52{
53   (void) count;
54   __indirect_glColorPointer(size, type, stride, pointer);
55}
56
57void
58__indirect_glEdgeFlagPointerEXT(GLsizei stride,
59                                GLsizei count, const GLboolean * pointer)
60{
61   (void) count;
62   __indirect_glEdgeFlagPointer(stride, pointer);
63}
64
65void
66__indirect_glIndexPointerEXT(GLenum type, GLsizei stride,
67                             GLsizei count, const GLvoid * pointer)
68{
69   (void) count;
70   __indirect_glIndexPointer(type, stride, pointer);
71}
72
73void
74__indirect_glNormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
75                              const GLvoid * pointer)
76{
77   (void) count;
78   __indirect_glNormalPointer(type, stride, pointer);
79}
80
81void
82__indirect_glTexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
83                                GLsizei count, const GLvoid * pointer)
84{
85   (void) count;
86   __indirect_glTexCoordPointer(size, type, stride, pointer);
87}
88
89void
90__indirect_glVertexPointerEXT(GLint size, GLenum type, GLsizei stride,
91                              GLsizei count, const GLvoid * pointer)
92{
93   (void) count;
94   __indirect_glVertexPointer(size, type, stride, pointer);
95}
96
97/*@}*/
98
99/*****************************************************************************/
100
101void
102__indirect_glInterleavedArrays(GLenum format, GLsizei stride,
103                               const GLvoid * pointer)
104{
105   struct glx_context *gc = __glXGetCurrentContext();
106   __GLXattribute *state = (__GLXattribute *) (gc->client_state_private);
107
108#define NONE  {0, 0, 0}
109#define F(x)  {GL_FLOAT, x, x * sizeof(GLfloat)}
110#define UB4   {GL_UNSIGNED_BYTE, 4, 4 * sizeof(GLubyte)}
111
112   /* Each row in this array describes the elements of a particular
113    * interleaved array mode.  Each column describes, in the order in which
114    * they appear in the interleaved arrays, one of the four possible types
115    * of vertex data that can appear in an interleaved array.
116    */
117   struct
118   {
119        /**
120	 * The enum describing the GL type, as would be passed to the
121	 * appropriate gl*Pointer function.
122	 */
123      GLushort type;
124
125        /**
126	 * Number of elements in the subarray, as would be passed (as the
127	 * \c size parameter) to the appropriate gl*Pointer function.
128	 */
129      GLubyte count;
130
131        /**
132	 * True size of a single element in the subarray, as would be passed
133	 * (as the \c stride parameter) to the appropriate gl*Pointer
134	 * function.
135	 */
136      GLubyte size;
137   }
138   static const modes[14][4] = {
139      /* texture color normal vertex */
140      {NONE, NONE, NONE, F(2)}, /* GL_V2F */
141      {NONE, NONE, NONE, F(3)}, /* GL_V3F */
142      {NONE, UB4, NONE, F(2)},  /* GL_C4UB_V2F */
143      {NONE, UB4, NONE, F(3)},  /* GL_C4UB_V3F */
144      {NONE, F(3), NONE, F(3)}, /* GL_C3F_V3F */
145      {NONE, NONE, F(3), F(3)}, /* GL_N3F_V3F */
146      {NONE, F(4), F(3), F(3)}, /* GL_C4F_N3F_V3F */
147      {F(2), NONE, NONE, F(3)}, /* GL_T2F_V3F */
148      {F(4), NONE, NONE, F(4)}, /* GL_T4F_V4F */
149      {F(2), UB4, NONE, F(3)},  /* GL_T2F_C4UB_V3F */
150      {F(2), F(3), NONE, F(3)}, /* GL_T2F_C3F_V3F */
151      {F(2), NONE, F(3), F(3)}, /* GL_T2F_N3F_V3F */
152      {F(2), F(4), F(3), F(3)}, /* GL_T2F_C4F_N3F_V3F */
153      {F(4), F(4), F(3), F(4)}, /* GL_T4F_C4F_N3F_V4F */
154   };
155#undef NONE
156#undef F
157#undef UB4
158
159   GLint trueStride, size;
160   int offsets[4];
161   unsigned i;
162   const int idx = format - GL_V2F;
163
164
165   /* All valid formats are on the range [GL_V2F, GL_V2F+0x0D].  Since idx
166    * is just the format biased by -GL_V2F, all valid idx values are on the
167    * range [0, 0x0D].
168    */
169   if ((idx < 0) || (idx > 0x0D)) {
170      __glXSetError(gc, GL_INVALID_ENUM);
171      return;
172   }
173
174   if (stride < 0) {
175      __glXSetError(gc, GL_INVALID_VALUE);
176      return;
177   }
178
179
180   /* If the 'count' for a subarray is non-zero, then the offset of its
181    * first element is at the currently accumulated 'size'.
182    */
183   size = 0;
184   for (i = 0; i < 4; i++) {
185      offsets[i] = (modes[idx][i].count != 0) ? size : -1;
186      size += modes[idx][i].size;
187   }
188
189   trueStride = (stride == 0) ? size : stride;
190
191   __glXArrayDisableAll(state);
192
193   if (offsets[0] >= 0) {
194      __indirect_glEnableClientState(GL_TEXTURE_COORD_ARRAY);
195      __indirect_glTexCoordPointer(modes[idx][0].count, GL_FLOAT,
196                                   trueStride, (const char *) pointer);
197   }
198   if (offsets[1] >= 0) {
199      __indirect_glEnableClientState(GL_COLOR_ARRAY);
200      __indirect_glColorPointer(modes[idx][1].count, modes[idx][1].type,
201                                trueStride,
202                                (const char *) pointer + offsets[1]);
203   }
204   if (offsets[2] >= 0) {
205      __indirect_glEnableClientState(GL_NORMAL_ARRAY);
206      __indirect_glNormalPointer(GL_FLOAT, trueStride,
207                                 (const char *) pointer + offsets[2]);
208   }
209   __indirect_glEnableClientState(GL_VERTEX_ARRAY);
210   __indirect_glVertexPointer(modes[idx][3].count, GL_FLOAT,
211                              trueStride,
212                              (const char *) pointer + offsets[3]);
213}
214
215#endif
216