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annotate src/video/gem/SDL_gemwm.c @ 689:5bb080d35049

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Date: Tue, 19 Aug 2003 17:57:00 +0200 From: Stephane Marchesin Subject: Re: [SDL] [patch] MMX alpha blit patches with MMX detection I think everything is correct now. I've done as much testing as I could, but some real-world testing wouldn't hurt, I think. The patch is here : http://icps.u-strasbg.fr/~marchesin/sdl_mmxblit.patch If you do byte-by-byte comparison of the output between C and MMX functions, you'll notice that the results for 555 and 565 RGB alpha blits aren't exactly the same. This is because MMX functions for 555 and 565 RGB have an higher accuracy. If you want the exact same behaviour that's possible by masking the three lower alpha bits in the MMX functions. Just ask ! I removed one MMX function because after I fixed it to match its C equivalent, it revealed to be slower than the C version on a PIII (although a bit faster on an Athlon XP). I've also added MMX and PIII replacements for SDL_memcpy. Those provide some speed up in testvidinfo -benchmark (at least for me, under linux & X11).
author Sam Lantinga <slouken@libsdl.org>
date Fri, 22 Aug 2003 05:51:19 +0000
parents 0ce5a68278fd
children 028e03e273c8
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /*
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29 * GEM SDL video driver implementation
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30 * Window manager functions
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31 *
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32 * Patrice Mandin
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33 */
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34
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35 /* Mint includes */
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36 #include <gem.h>
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37
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38 #include "SDL_gemwm_c.h"
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39
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40 /* Defines */
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41
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42 #define ICONWIDTH 64
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43 #define ICONHEIGHT 64
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44
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45 /* Functions */
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46
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47 void GEM_SetCaption(_THIS, const char *title, const char *icon)
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48 {
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49 short parm[4];
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50 const char *new_name;
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51
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52 new_name = NULL;
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53
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54 if (title)
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55 GEM_title_name = title;
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56
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57 if (icon)
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58 GEM_icon_name = icon;
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59
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60 /* Is window iconified ? */
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61 parm[0]=0;
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62 if (GEM_wfeatures & (1<<WF_ICONIFY))
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63 wind_get(GEM_handle, WF_ICONIFY, &parm[0], &parm[1], &parm[2], &parm[3]);
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64
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65 if (parm[0]==0) {
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66 /* Change window name */
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67 if (title)
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68 new_name = title;
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69 } else {
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70 /* Change icon name */
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71 if (icon)
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72 new_name = icon;
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73 }
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74
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75 parm[0]= ((unsigned long) new_name)>>16;
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76 parm[1]= ((unsigned long) new_name) & 65535;
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77
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78 if (new_name) {
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79 wind_set(GEM_handle, WF_NAME, parm[0], parm[1], 0, 0);
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80 }
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81 }
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82
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83 void GEM_SetIcon(_THIS, SDL_Surface *icon, Uint8 *mask)
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84 {
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85 if ((GEM_wfeatures & (1<<WF_ICONIFY))==0)
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86 return;
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87
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88 /* Todo */
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89 }
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90
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91 int GEM_IconifyWindow(_THIS)
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92 {
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93 short message[8];
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94
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95 if ((GEM_wfeatures & (1<<WF_ICONIFY))==0)
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96 return 0;
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97
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98 message[0] = WM_ICONIFY;
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99 message[1] = gl_apid;
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100 message[2] = 0;
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101 message[3] = GEM_handle;
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102 message[4] = 0;
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103 message[5] = GEM_desk_h-ICONHEIGHT;
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104 message[6] = ICONWIDTH;
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105 message[7] = ICONHEIGHT;
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106
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107 appl_write(gl_apid, sizeof(message), message);
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109 return 1;
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110 }
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111
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112 SDL_GrabMode GEM_GrabInput(_THIS, SDL_GrabMode mode)
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113 {
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114 return mode;
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115 }