renderpix.c revision 6e8897ff9f90601ebf6eed500ad942c11b54d1f7 
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/*
32 * (C) Copyright IBM Corporation 2005
33 * All Rights Reserved.
34 *
35 * Permission is hereby granted, free of charge, to any person obtaining a
36 * copy of this software and associated documentation files (the "Software"),
37 * to deal in the Software without restriction, including without limitation
38 * the rights to use, copy, modify, merge, publish, distribute, sub license,
39 * and/or sell copies of the Software, and to permit persons to whom the
40 * Software is furnished to do so, subject to the following conditions:
41 *
42 * The above copyright notice and this permission notice (including the next
43 * paragraph) shall be included in all copies or substantial portions of the
44 * Software.
45 *
46 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
47 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
48 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
49 * IBM,
50 * AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
51 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
52 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
53 * SOFTWARE.
54 */
55
56#include "packrender.h"
57#include "indirect.h"
58
59/**
60 * Send a large image to the server.  If necessary, a buffer is allocated
61 * to hold the unpacked data that is copied from the clients memory.
62 *
63 * \param gc        Current GLX context
64 * \param compsize  Size, in bytes, of the image portion
65 * \param dim       Number of dimensions of the image
66 * \param width     Width of the image
67 * \param height    Height of the image, must be 1 for 1D images
68 * \param depth     Depth of the image, must be 1 for 1D or 2D images
69 * \param format    Format of the image
70 * \param type      Data type of the image
71 * \param src       Pointer to the image data
72 * \param pc        Pointer to end of the command header
73 * \param modes     Pointer to the pixel unpack data
74 *
75 * \todo
76 * Modify this function so that \c NULL images are sent using
77 * \c __glXSendLargeChunk instead of __glXSendLargeCommand.  Doing this
78 * will eliminate the need to allocate a buffer for that case.
79 *
80 * \bugs
81 * The \c fastImageUnpack path, which is thankfully never used, is completely
82 * broken.
83 */
84void
85__glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
86                    GLint width, GLint height, GLint depth,
87                    GLenum format, GLenum type, const GLvoid * src,
88                    GLubyte * pc, GLubyte * modes)
89{
90   if (!gc->fastImageUnpack || (src == NULL)) {
91      /* Allocate a temporary holding buffer */
92      GLubyte *buf = (GLubyte *) Xmalloc(compsize);
93      if (!buf) {
94         __glXSetError(gc, GL_OUT_OF_MEMORY);
95         return;
96      }
97
98      /* Apply pixel store unpack modes to copy data into buf */
99      if (src != NULL) {
100         (*gc->fillImage) (gc, dim, width, height, depth, format, type,
101                           src, buf, modes);
102      }
103      else {
104         if (dim < 3) {
105            (void) memcpy(modes, __glXDefaultPixelStore + 4, 20);
106         }
107         else {
108            (void) memcpy(modes, __glXDefaultPixelStore + 0, 36);
109         }
110      }
111
112      /* Send large command */
113      __glXSendLargeCommand(gc, gc->pc, pc - gc->pc, buf, compsize);
114
115      /* Free buffer */
116      Xfree((char *) buf);
117   }
118   else {
119      /* Just send the data straight as is */
120      __glXSendLargeCommand(gc, gc->pc, pc - gc->pc, pc, compsize);
121   }
122}
123
124/************************************************************************/
125
126/**
127 * Implement GLX protocol for \c glSeparableFilter2D.
128 *
129 * \bugs
130 * The \c fastImageUnpack path, which is thankfully never used, is completely
131 * broken.
132 */
133void
134__indirect_glSeparableFilter2D(GLenum target, GLenum internalformat,
135                               GLsizei width, GLsizei height, GLenum format,
136                               GLenum type, const GLvoid * row,
137                               const GLvoid * column)
138{
139   __GLX_DECLARE_VARIABLES();
140   GLuint compsize2, hdrlen, totalhdrlen, image1len, image2len;
141
142   __GLX_LOAD_VARIABLES();
143   compsize = __glImageSize(width, 1, 1, format, type, 0);
144   compsize2 = __glImageSize(height, 1, 1, format, type, 0);
145   totalhdrlen = __GLX_PAD(__GLX_CONV_FILT_CMD_HDR_SIZE);
146   hdrlen = __GLX_PAD(__GLX_CONV_FILT_HDR_SIZE);
147   image1len = __GLX_PAD(compsize);
148   image2len = __GLX_PAD(compsize2);
149   cmdlen = totalhdrlen + image1len + image2len;
150   if (!gc->currentDpy)
151      return;
152
153   if (cmdlen <= gc->maxSmallRenderCommandSize) {
154      /* Use GLXRender protocol to send small command */
155      __GLX_BEGIN_VARIABLE_WITH_PIXEL(X_GLrop_SeparableFilter2D, cmdlen);
156      __GLX_PUT_LONG(0, target);
157      __GLX_PUT_LONG(4, internalformat);
158      __GLX_PUT_LONG(8, width);
159      __GLX_PUT_LONG(12, height);
160      __GLX_PUT_LONG(16, format);
161      __GLX_PUT_LONG(20, type);
162      pc += hdrlen;
163      if (compsize > 0) {
164         (*gc->fillImage) (gc, 1, width, 1, 1, format, type,
165                           row, pc, pixelHeaderPC);
166         pc += image1len;
167      }
168      if (compsize2 > 0) {
169         (*gc->fillImage) (gc, 1, height, 1, 1, format, type,
170                           column, pc, NULL);
171         pc += image2len;
172      }
173      if ((compsize == 0) && (compsize2 == 0)) {
174         /* Setup default store modes */
175         (void) memcpy(pixelHeaderPC, __glXDefaultPixelStore + 4, 20);
176      }
177      __GLX_END(0);
178   }
179   else {
180      const GLint bufsize = image1len + image2len;
181
182      /* Use GLXRenderLarge protocol to send command */
183      __GLX_BEGIN_VARIABLE_LARGE_WITH_PIXEL(X_GLrop_SeparableFilter2D,
184                                            cmdlen + 4);
185      __GLX_PUT_LONG(0, target);
186      __GLX_PUT_LONG(4, internalformat);
187      __GLX_PUT_LONG(8, width);
188      __GLX_PUT_LONG(12, height);
189      __GLX_PUT_LONG(16, format);
190      __GLX_PUT_LONG(20, type);
191      pc += hdrlen;
192
193      if (!gc->fastImageUnpack) {
194         /* Allocate a temporary holding buffer */
195         GLubyte *buf = (GLubyte *) Xmalloc(bufsize);
196         if (!buf) {
197            __glXSetError(gc, GL_OUT_OF_MEMORY);
198            return;
199         }
200         (*gc->fillImage) (gc, 1, width, 1, 1, format, type, row, buf,
201                           pixelHeaderPC);
202
203         (*gc->fillImage) (gc, 1, height, 1, 1, format, type, column,
204                           buf + image1len, pixelHeaderPC);
205
206         /* Send large command */
207         __glXSendLargeCommand(gc, gc->pc, (GLint) (pc - gc->pc), buf,
208                               bufsize);
209         /* Free buffer */
210         Xfree((char *) buf);
211      }
212      else {
213         /* Just send the data straight as is */
214         __glXSendLargeCommand(gc, gc->pc, (GLint) (pc - gc->pc), pc,
215                               bufsize);
216      }
217   }
218}
219