src/glx/renderpix.c

   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 void
  81 __glXSendLargeImage(struct glx_context * gc, GLint compsize, GLint dim,
  82                     GLint width, GLint height, GLint depth,
  83                     GLenum format, GLenum type, const GLvoid * src,
  84                     GLubyte * pc, GLubyte * modes)
  85 {
  86     /* Allocate a temporary holding buffer */
  87     GLubyte *buf = (GLubyte *) Xmalloc(compsize);
  88     if (!buf) {
  89         __glXSetError(gc, GL_OUT_OF_MEMORY);
  90         return;
  91     }
  92
  93     /* Apply pixel store unpack modes to copy data into buf */
  94     if (src != NULL) {
  95         (*gc->fillImage) (gc, dim, width, height, depth, format, type,
  96                           src, buf, modes);
  97     }
  98     else {
  99         if (dim < 3) {
 100             (void) memcpy(modes, __glXDefaultPixelStore + 4, 20);
 101         }
 102         else {
 103             (void) memcpy(modes, __glXDefaultPixelStore + 0, 36);
 104         }
 105     }
 106
 107     /* Send large command */
 108     __glXSendLargeCommand(gc, gc->pc, pc - gc->pc, buf, compsize);
 109
 110     /* Free buffer */
 111     Xfree((char *) buf);
 112 }
 113
 114 /************************************************************************/
 115
 116 /**
 117  * Implement GLX protocol for \c glSeparableFilter2D.
 118  */
 119 void
 120 __indirect_glSeparableFilter2D(GLenum target, GLenum internalformat,
 121                                GLsizei width, GLsizei height, GLenum format,
 122                                GLenum type, const GLvoid * row,
 123                                const GLvoid * column)
 124 {
 125    __GLX_DECLARE_VARIABLES();
 126    GLuint compsize2, hdrlen, totalhdrlen, image1len, image2len;
 127
 128    __GLX_LOAD_VARIABLES();
 129    compsize = __glImageSize(width, 1, 1, format, type, 0);
 130    compsize2 = __glImageSize(height, 1, 1, format, type, 0);
 131    totalhdrlen = __GLX_PAD(__GLX_CONV_FILT_CMD_HDR_SIZE);
 132    hdrlen = __GLX_PAD(__GLX_CONV_FILT_HDR_SIZE);
 133    image1len = __GLX_PAD(compsize);
 134    image2len = __GLX_PAD(compsize2);
 135    cmdlen = totalhdrlen + image1len + image2len;
 136    if (!gc->currentDpy)
 137       return;
 138
 139    if (cmdlen <= gc->maxSmallRenderCommandSize) {
 140       /* Use GLXRender protocol to send small command */
 141       __GLX_BEGIN_VARIABLE_WITH_PIXEL(X_GLrop_SeparableFilter2D, cmdlen);
 142       __GLX_PUT_LONG(0, target);
 143       __GLX_PUT_LONG(4, internalformat);
 144       __GLX_PUT_LONG(8, width);
 145       __GLX_PUT_LONG(12, height);
 146       __GLX_PUT_LONG(16, format);
 147       __GLX_PUT_LONG(20, type);
 148       pc += hdrlen;
 149       if (compsize > 0) {
 150          (*gc->fillImage) (gc, 1, width, 1, 1, format, type,
 151                            row, pc, pixelHeaderPC);
 152          pc += image1len;
 153       }
 154       if (compsize2 > 0) {
 155          (*gc->fillImage) (gc, 1, height, 1, 1, format, type,
 156                            column, pc, NULL);
 157          pc += image2len;
 158       }
 159       if ((compsize == 0) && (compsize2 == 0)) {
 160          /* Setup default store modes */
 161          (void) memcpy(pixelHeaderPC, __glXDefaultPixelStore + 4, 20);
 162       }
 163       __GLX_END(0);
 164    }
 165    else {
 166       GLubyte *buf;
 167       const GLint bufsize = image1len + image2len;
 168
 169       /* Use GLXRenderLarge protocol to send command */
 170       __GLX_BEGIN_VARIABLE_LARGE_WITH_PIXEL(X_GLrop_SeparableFilter2D,
 171                                             cmdlen + 4);
 172       __GLX_PUT_LONG(0, target);
 173       __GLX_PUT_LONG(4, internalformat);
 174       __GLX_PUT_LONG(8, width);
 175       __GLX_PUT_LONG(12, height);
 176       __GLX_PUT_LONG(16, format);
 177       __GLX_PUT_LONG(20, type);
 178       pc += hdrlen;
 179
 180       /* Allocate a temporary holding buffer */
 181       buf = (GLubyte *) Xmalloc(bufsize);
 182       if (!buf) {
 183          __glXSetError(gc, GL_OUT_OF_MEMORY);
 184          return;
 185       }
 186       (*gc->fillImage) (gc, 1, width, 1, 1, format, type, row, buf,
 187                         pixelHeaderPC);
 188
 189       (*gc->fillImage) (gc, 1, height, 1, 1, format, type, column,
 190                         buf + image1len, pixelHeaderPC);
 191
 192       /* Send large command */
 193       __glXSendLargeCommand(gc, gc->pc, (GLint) (pc - gc->pc), buf,
 194                             bufsize);
 195       /* Free buffer */
 196       Xfree((char *) buf);
 197    }
 198 }