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1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2006 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 Lesser General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2.1 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 Lesser 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 Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #include "SDL_config.h" |
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23 |
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24 /* DGA 2.0 based SDL video driver implementation. |
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25 */ |
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26 |
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27 #include <stdio.h> |
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28 |
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29 #include <X11/Xlib.h> |
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30 #include "../Xext/extensions/xf86dga.h" |
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31 |
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32 #include "SDL_video.h" |
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33 #include "SDL_mouse.h" |
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34 #include "../SDL_sysvideo.h" |
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35 #include "../SDL_pixels_c.h" |
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36 #include "../../events/SDL_events_c.h" |
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37 #include "SDL_dgavideo.h" |
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38 #include "SDL_dgamouse_c.h" |
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39 #include "SDL_dgaevents_c.h" |
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40 |
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41 /* get function pointers... */ |
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42 #include "../x11/SDL_x11dyn.h" |
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43 |
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44 /*#define DGA_DEBUG*/ |
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45 |
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46 /* Heheh we're using X11 event code */ |
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47 extern void X11_SaveScreenSaver(Display *display, int *saved_timeout, BOOL *dpms); |
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48 extern void X11_DisableScreenSaver(Display *display); |
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49 extern void X11_RestoreScreenSaver(Display *display, int saved_timeout, BOOL dpms); |
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50 |
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51 /* Initialization/Query functions */ |
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52 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat); |
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53 static SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
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54 static SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
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55 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, |
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56 SDL_Color *colors); |
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57 static int DGA_SetGammaRamp(_THIS, Uint16 *ramp); |
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58 static void DGA_VideoQuit(_THIS); |
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59 |
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60 /* Hardware surface functions */ |
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61 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size); |
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62 static void DGA_FreeHWSurfaces(_THIS); |
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63 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface); |
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64 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color); |
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65 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst); |
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66 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface); |
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67 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface); |
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68 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface); |
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69 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface); |
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70 |
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71 /* DGA driver bootstrap functions */ |
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72 |
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73 static int DGA_Available(void) |
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74 { |
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75 const char *display = NULL; |
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76 Display *dpy = NULL; |
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77 int available = 0; |
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78 |
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79 /* The driver is available is available if the display is local |
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80 and the DGA 2.0+ extension is available, and we can map mem. |
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81 */ |
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82 if ( SDL_X11_LoadSymbols() ) { |
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83 if ( (SDL_strncmp(XDisplayName(display), ":", 1) == 0) || |
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84 (SDL_strncmp(XDisplayName(display), "unix:", 5) == 0) ) { |
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85 dpy = XOpenDisplay(display); |
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86 if ( dpy ) { |
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87 int events, errors, major, minor; |
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88 |
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89 if ( SDL_NAME(XDGAQueryExtension)(dpy, &events, &errors) && |
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90 SDL_NAME(XDGAQueryVersion)(dpy, &major, &minor) ) { |
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91 int screen; |
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92 |
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93 screen = DefaultScreen(dpy); |
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94 if ( (major >= 2) && |
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95 SDL_NAME(XDGAOpenFramebuffer)(dpy, screen) ) { |
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96 available = 1; |
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97 SDL_NAME(XDGACloseFramebuffer)(dpy, screen); |
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98 } |
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99 } |
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100 XCloseDisplay(dpy); |
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101 } |
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102 } |
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103 SDL_X11_UnloadSymbols(); |
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104 } |
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105 return(available); |
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106 } |
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107 |
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108 static void DGA_DeleteDevice(SDL_VideoDevice *device) |
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109 { |
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110 if (device != NULL) { |
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111 SDL_free(device->hidden); |
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112 SDL_free(device); |
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113 SDL_X11_UnloadSymbols(); |
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114 } |
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115 } |
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116 |
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117 static SDL_VideoDevice *DGA_CreateDevice(int devindex) |
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118 { |
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119 SDL_VideoDevice *device = NULL; |
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120 |
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121 /* Initialize all variables that we clean on shutdown */ |
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122 if (SDL_X11_LoadSymbols()) { |
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123 device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
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124 if ( device ) { |
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125 SDL_memset(device, 0, (sizeof *device)); |
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126 device->hidden = (struct SDL_PrivateVideoData *) |
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127 SDL_malloc((sizeof *device->hidden)); |
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128 } |
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129 if ( (device == NULL) || (device->hidden == NULL) ) { |
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130 SDL_OutOfMemory(); |
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131 if ( device ) { |
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132 SDL_free(device); |
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133 } |
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134 SDL_X11_UnloadSymbols(); |
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135 return(0); |
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136 } |
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137 SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
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138 |
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139 /* Set the function pointers */ |
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140 device->VideoInit = DGA_VideoInit; |
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141 device->ListModes = DGA_ListModes; |
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142 device->SetVideoMode = DGA_SetVideoMode; |
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143 device->SetColors = DGA_SetColors; |
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144 device->UpdateRects = NULL; |
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145 device->VideoQuit = DGA_VideoQuit; |
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146 device->AllocHWSurface = DGA_AllocHWSurface; |
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147 device->CheckHWBlit = DGA_CheckHWBlit; |
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148 device->FillHWRect = DGA_FillHWRect; |
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149 device->SetHWColorKey = NULL; |
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150 device->SetHWAlpha = NULL; |
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151 device->LockHWSurface = DGA_LockHWSurface; |
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152 device->UnlockHWSurface = DGA_UnlockHWSurface; |
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153 device->FlipHWSurface = DGA_FlipHWSurface; |
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154 device->FreeHWSurface = DGA_FreeHWSurface; |
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155 device->SetGammaRamp = DGA_SetGammaRamp; |
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156 device->GetGammaRamp = NULL; |
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157 device->SetCaption = NULL; |
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158 device->SetIcon = NULL; |
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159 device->IconifyWindow = NULL; |
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160 device->GrabInput = NULL; |
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161 device->GetWMInfo = NULL; |
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162 device->InitOSKeymap = DGA_InitOSKeymap; |
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163 device->PumpEvents = DGA_PumpEvents; |
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164 |
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165 device->free = DGA_DeleteDevice; |
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166 } |
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167 |
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168 return device; |
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169 } |
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170 |
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171 VideoBootStrap DGA_bootstrap = { |
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172 "dga", "XFree86 DGA 2.0", |
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173 DGA_Available, DGA_CreateDevice |
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174 }; |
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175 |
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176 static int DGA_AddMode(_THIS, int bpp, int w, int h) |
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177 { |
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178 SDL_Rect *mode; |
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179 int index; |
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180 int next_mode; |
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181 |
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182 /* Check to see if we already have this mode */ |
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183 if ( bpp < 8 ) { /* Not supported */ |
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184 return(0); |
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185 } |
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186 index = ((bpp+7)/8)-1; |
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187 if ( SDL_nummodes[index] > 0 ) { |
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188 mode = SDL_modelist[index][SDL_nummodes[index]-1]; |
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189 if ( (mode->w == w) && (mode->h == h) ) { |
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190 return(0); |
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191 } |
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192 } |
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193 |
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194 /* Set up the new video mode rectangle */ |
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195 mode = (SDL_Rect *)SDL_malloc(sizeof *mode); |
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196 if ( mode == NULL ) { |
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197 SDL_OutOfMemory(); |
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198 return(-1); |
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199 } |
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200 mode->x = 0; |
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201 mode->y = 0; |
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202 mode->w = w; |
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203 mode->h = h; |
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204 |
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205 /* Allocate the new list of modes, and fill in the new mode */ |
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206 next_mode = SDL_nummodes[index]; |
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207 SDL_modelist[index] = (SDL_Rect **) |
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208 SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *)); |
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209 if ( SDL_modelist[index] == NULL ) { |
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210 SDL_OutOfMemory(); |
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211 SDL_nummodes[index] = 0; |
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212 SDL_free(mode); |
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213 return(-1); |
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214 } |
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215 SDL_modelist[index][next_mode] = mode; |
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216 SDL_modelist[index][next_mode+1] = NULL; |
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217 SDL_nummodes[index]++; |
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218 |
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219 return(0); |
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220 } |
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221 |
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222 /* This whole function is a hack. :) */ |
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223 static Uint32 get_video_size(_THIS) |
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224 { |
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225 /* This is a non-exported function from libXxf86dga.a */ |
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226 extern unsigned char *SDL_NAME(XDGAGetMappedMemory)(int screen); |
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227 FILE *proc; |
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228 unsigned long mem; |
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229 unsigned start, stop; |
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230 char line[BUFSIZ]; |
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231 Uint32 size; |
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232 |
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233 mem = (unsigned long)SDL_NAME(XDGAGetMappedMemory)(DGA_Screen); |
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234 size = 0; |
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235 proc = fopen("/proc/self/maps", "r"); |
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236 if ( proc ) { |
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237 while ( fgets(line, sizeof(line)-1, proc) ) { |
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238 SDL_sscanf(line, "%x-%x", &start, &stop); |
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239 if ( start == mem ) { |
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240 size = (Uint32)((stop-start)/1024); |
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241 break; |
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242 } |
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243 } |
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244 fclose(proc); |
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245 } |
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246 return(size); |
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247 } |
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248 |
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249 #ifdef DGA_DEBUG |
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250 static void PrintMode(SDL_NAME(XDGAMode) *mode) |
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251 { |
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252 printf("Mode: %s (%dx%d) at %d bpp (%f refresh, %d pitch) num: %d\n", |
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253 mode->name, |
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254 mode->viewportWidth, mode->viewportHeight, |
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255 mode->depth == 24 ? mode->bitsPerPixel : mode->depth, |
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256 mode->verticalRefresh, mode->bytesPerScanline, mode->num); |
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257 printf("\tRGB: 0x%8.8x 0x%8.8x 0x%8.8x (%d - %s)\n", |
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258 mode->redMask, mode->greenMask, mode->blueMask, |
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259 mode->visualClass, |
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260 mode->visualClass == TrueColor ? "truecolor" : |
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261 mode->visualClass == DirectColor ? "directcolor" : |
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262 mode->visualClass == PseudoColor ? "pseudocolor" : "unknown"); |
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263 printf("\tFlags: "); |
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264 if ( mode->flags & XDGAConcurrentAccess ) |
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265 printf(" XDGAConcurrentAccess"); |
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266 if ( mode->flags & XDGASolidFillRect ) |
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267 printf(" XDGASolidFillRect"); |
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268 if ( mode->flags & XDGABlitRect ) |
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269 printf(" XDGABlitRect"); |
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270 if ( mode->flags & XDGABlitTransRect ) |
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271 printf(" XDGABlitTransRect"); |
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272 if ( mode->flags & XDGAPixmap ) |
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273 printf(" XDGAPixmap"); |
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274 if ( mode->flags & XDGAInterlaced ) |
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275 printf(" XDGAInterlaced"); |
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276 if ( mode->flags & XDGADoublescan ) |
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277 printf(" XDGADoublescan"); |
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278 if ( mode->viewportFlags & XDGAFlipRetrace ) |
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279 printf(" XDGAFlipRetrace"); |
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280 if ( mode->viewportFlags & XDGAFlipImmediate ) |
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281 printf(" XDGAFlipImmediate"); |
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282 printf("\n"); |
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283 } |
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284 #endif /* DGA_DEBUG */ |
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285 |
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286 static int cmpmodes(const void *va, const void *vb) |
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287 { |
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288 const SDL_NAME(XDGAMode) *a = (const SDL_NAME(XDGAMode) *)va; |
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289 const SDL_NAME(XDGAMode) *b = (const SDL_NAME(XDGAMode) *)vb; |
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290 |
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291 if ( (a->viewportWidth == b->viewportWidth) && |
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292 (b->viewportHeight == a->viewportHeight) ) { |
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293 /* Prefer 32 bpp over 24 bpp, 16 bpp over 15 bpp */ |
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294 int a_bpp = a->depth == 24 ? a->bitsPerPixel : a->depth; |
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295 int b_bpp = b->depth == 24 ? b->bitsPerPixel : b->depth; |
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296 if ( a_bpp != b_bpp ) { |
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297 return b_bpp - a_bpp; |
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298 } |
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299 /* Prefer DirectColor visuals, for gamma support */ |
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300 if ( a->visualClass == DirectColor && b->visualClass != DirectColor ) |
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301 return -1; |
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302 if ( b->visualClass == DirectColor && a->visualClass != DirectColor ) |
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303 return 1; |
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304 /* Maintain server refresh rate sorting */ |
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305 return a->num - b->num; |
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306 } else if ( a->viewportWidth == b->viewportWidth ) { |
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307 return b->viewportHeight - a->viewportHeight; |
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308 } else { |
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309 return b->viewportWidth - a->viewportWidth; |
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310 } |
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311 } |
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312 static void UpdateHWInfo(_THIS, SDL_NAME(XDGAMode) *mode) |
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313 { |
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314 this->info.wm_available = 0; |
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315 this->info.hw_available = 1; |
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316 if ( mode->flags & XDGABlitRect ) { |
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317 this->info.blit_hw = 1; |
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318 } else { |
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319 this->info.blit_hw = 0; |
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320 } |
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321 if ( mode->flags & XDGABlitTransRect ) { |
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322 this->info.blit_hw_CC = 1; |
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323 } else { |
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324 this->info.blit_hw_CC = 0; |
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325 } |
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326 if ( mode->flags & XDGASolidFillRect ) { |
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327 this->info.blit_fill = 1; |
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328 } else { |
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329 this->info.blit_fill = 0; |
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330 } |
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331 this->info.video_mem = get_video_size(this); |
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332 } |
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333 |
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334 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat) |
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335 { |
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336 const char *display; |
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337 int event_base, error_base; |
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338 int major_version, minor_version; |
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339 Visual *visual; |
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340 SDL_NAME(XDGAMode) *modes; |
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341 int i, num_modes; |
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342 |
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343 /* Open the X11 display */ |
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344 display = NULL; /* Get it from DISPLAY environment variable */ |
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345 |
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346 DGA_Display = XOpenDisplay(display); |
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347 if ( DGA_Display == NULL ) { |
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348 SDL_SetError("Couldn't open X11 display"); |
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349 return(-1); |
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350 } |
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351 |
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352 /* Check for the DGA extension */ |
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353 if ( ! SDL_NAME(XDGAQueryExtension)(DGA_Display, &event_base, &error_base) || |
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354 ! SDL_NAME(XDGAQueryVersion)(DGA_Display, &major_version, &minor_version) ) { |
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355 SDL_SetError("DGA extension not available"); |
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356 XCloseDisplay(DGA_Display); |
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357 return(-1); |
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358 } |
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359 if ( major_version < 2 ) { |
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360 SDL_SetError("DGA driver requires DGA 2.0 or newer"); |
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361 XCloseDisplay(DGA_Display); |
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362 return(-1); |
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363 } |
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364 DGA_event_base = event_base; |
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365 |
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366 /* Determine the current screen size */ |
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367 this->info.current_w = DisplayWidth(DGA_Display, DGA_Screen); |
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368 this->info.current_h = DisplayHeight(DGA_Display, DGA_Screen); |
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369 |
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370 /* Determine the current screen depth */ |
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371 visual = DefaultVisual(DGA_Display, DGA_Screen); |
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372 { |
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373 XPixmapFormatValues *pix_format; |
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374 int i, num_formats; |
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375 |
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376 vformat->BitsPerPixel = DefaultDepth(DGA_Display, DGA_Screen); |
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377 pix_format = XListPixmapFormats(DGA_Display, &num_formats); |
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378 if ( pix_format == NULL ) { |
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379 SDL_SetError("Couldn't determine screen formats"); |
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380 XCloseDisplay(DGA_Display); |
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381 return(-1); |
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382 } |
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383 for ( i=0; i<num_formats; ++i ) { |
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384 if ( vformat->BitsPerPixel == pix_format[i].depth ) |
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385 break; |
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386 } |
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387 if ( i != num_formats ) |
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388 vformat->BitsPerPixel = pix_format[i].bits_per_pixel; |
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389 XFree((char *)pix_format); |
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390 } |
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391 if ( vformat->BitsPerPixel > 8 ) { |
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392 vformat->Rmask = visual->red_mask; |
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393 vformat->Gmask = visual->green_mask; |
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394 vformat->Bmask = visual->blue_mask; |
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395 } |
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396 |
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397 /* Open access to the framebuffer */ |
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398 if ( ! SDL_NAME(XDGAOpenFramebuffer)(DGA_Display, DGA_Screen) ) { |
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399 SDL_SetError("Unable to map the video memory"); |
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400 XCloseDisplay(DGA_Display); |
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401 return(-1); |
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402 } |
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403 |
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404 /* Save DPMS and screensaver settings */ |
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405 X11_SaveScreenSaver(DGA_Display, &screensaver_timeout, &dpms_enabled); |
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406 X11_DisableScreenSaver(DGA_Display); |
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407 |
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408 /* Query for the list of available video modes */ |
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409 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
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410 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
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411 for ( i=0; i<num_modes; ++i ) { |
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412 if ( ((modes[i].visualClass == PseudoColor) || |
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413 (modes[i].visualClass == DirectColor) || |
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414 (modes[i].visualClass == TrueColor)) && |
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415 !(modes[i].flags & (XDGAInterlaced|XDGADoublescan)) ) { |
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416 #ifdef DGA_DEBUG |
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417 PrintMode(&modes[i]); |
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418 #endif |
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419 DGA_AddMode(this, modes[i].bitsPerPixel, |
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420 modes[i].viewportWidth, |
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421 modes[i].viewportHeight); |
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422 } |
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423 } |
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424 UpdateHWInfo(this, modes); |
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425 XFree(modes); |
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426 |
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427 /* Create the hardware surface lock mutex */ |
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428 hw_lock = SDL_CreateMutex(); |
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429 if ( hw_lock == NULL ) { |
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430 SDL_SetError("Unable to create lock mutex"); |
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431 DGA_VideoQuit(this); |
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432 return(-1); |
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433 } |
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434 |
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435 #ifdef LOCK_DGA_DISPLAY |
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436 /* Create the event lock so we're thread-safe.. :-/ */ |
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437 event_lock = SDL_CreateMutex(); |
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438 #endif /* LOCK_DGA_DISPLAY */ |
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439 |
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440 /* We're done! */ |
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441 return(0); |
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442 } |
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443 |
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444 SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) |
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445 { |
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446 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); |
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447 } |
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448 |
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449 /* Various screen update functions available */ |
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450 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); |
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451 |
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452 SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, |
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453 int width, int height, int bpp, Uint32 flags) |
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454 { |
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455 SDL_NAME(XDGAMode) *modes; |
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456 int i, num_modes; |
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457 SDL_NAME(XDGADevice) *mode; |
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458 int screen_len; |
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459 Uint8 *surfaces_mem; |
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460 int surfaces_len; |
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461 |
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462 /* Free any previous colormap */ |
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463 if ( DGA_colormap ) { |
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464 XFreeColormap(DGA_Display, DGA_colormap); |
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465 DGA_colormap = 0; |
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466 } |
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467 |
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468 /* Search for a matching video mode */ |
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469 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
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470 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
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471 for ( i=0; i<num_modes; ++i ) { |
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472 int depth; |
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473 |
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474 depth = modes[i].depth; |
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475 if ( depth == 24 ) { /* Distinguish between 24 and 32 bpp */ |
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476 depth = modes[i].bitsPerPixel; |
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477 } |
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478 if ( (depth == bpp) && |
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479 (modes[i].viewportWidth == width) && |
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480 (modes[i].viewportHeight == height) && |
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481 ((modes[i].visualClass == PseudoColor) || |
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482 (modes[i].visualClass == DirectColor) || |
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483 (modes[i].visualClass == TrueColor)) && |
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484 !(modes[i].flags & (XDGAInterlaced|XDGADoublescan)) ) { |
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485 break; |
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486 } |
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487 } |
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488 if ( i == num_modes ) { |
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489 SDL_SetError("No matching video mode found"); |
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490 return(NULL); |
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491 } |
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492 #ifdef DGA_DEBUG |
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493 PrintMode(&modes[i]); |
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494 #endif |
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495 |
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496 /* Set the video mode */ |
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497 mode = SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, modes[i].num); |
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498 XFree(modes); |
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499 if ( mode == NULL ) { |
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500 SDL_SetError("Unable to switch to requested mode"); |
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501 return(NULL); |
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502 } |
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503 DGA_visualClass = mode->mode.visualClass; |
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504 memory_base = (Uint8 *)mode->data; |
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505 memory_pitch = mode->mode.bytesPerScanline; |
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506 |
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507 /* Set up the new mode framebuffer */ |
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508 current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE); |
|
509 current->w = mode->mode.viewportWidth; |
|
510 current->h = mode->mode.viewportHeight; |
|
511 current->pitch = memory_pitch; |
|
512 current->pixels = memory_base; |
|
513 if ( ! SDL_ReallocFormat(current, mode->mode.bitsPerPixel, |
|
514 mode->mode.redMask, |
|
515 mode->mode.greenMask, |
|
516 mode->mode.blueMask, 0) ) { |
|
517 return(NULL); |
|
518 } |
|
519 screen_len = current->h*current->pitch; |
|
520 |
|
521 /* Create a colormap if necessary */ |
|
522 if ( (DGA_visualClass == PseudoColor) || |
|
523 (DGA_visualClass == DirectColor) ) { |
|
524 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
|
525 mode, AllocAll); |
|
526 if ( DGA_visualClass == PseudoColor ) { |
|
527 current->flags |= SDL_HWPALETTE; |
|
528 } else { |
|
529 /* Initialize the colormap to the identity mapping */ |
|
530 SDL_GetGammaRamp(0, 0, 0); |
|
531 this->screen = current; |
|
532 DGA_SetGammaRamp(this, this->gamma); |
|
533 this->screen = NULL; |
|
534 } |
|
535 } else { |
|
536 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
|
537 mode, AllocNone); |
|
538 } |
|
539 SDL_NAME(XDGAInstallColormap)(DGA_Display, DGA_Screen, DGA_colormap); |
|
540 |
|
541 /* Update the hardware capabilities */ |
|
542 UpdateHWInfo(this, &mode->mode); |
|
543 |
|
544 /* Set up the information for hardware surfaces */ |
|
545 surfaces_mem = (Uint8 *)current->pixels + screen_len; |
|
546 surfaces_len = (mode->mode.imageHeight*current->pitch - screen_len); |
|
547 |
|
548 /* Update for double-buffering, if we can */ |
|
549 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, 0, 0, XDGAFlipRetrace); |
|
550 if ( flags & SDL_DOUBLEBUF ) { |
|
551 if ( mode->mode.imageHeight >= (current->h*2) ) { |
|
552 current->flags |= SDL_DOUBLEBUF; |
|
553 flip_page = 0; |
|
554 flip_yoffset[0] = 0; |
|
555 flip_yoffset[1] = current->h; |
|
556 flip_address[0] = memory_base; |
|
557 flip_address[1] = memory_base+screen_len; |
|
558 surfaces_mem += screen_len; |
|
559 surfaces_len -= screen_len; |
|
560 } |
|
561 } |
|
562 |
|
563 /* Allocate memory tracking for hardware surfaces */ |
|
564 DGA_FreeHWSurfaces(this); |
|
565 if ( surfaces_len < 0 ) { |
|
566 surfaces_len = 0; |
|
567 } |
|
568 DGA_InitHWSurfaces(this, current, surfaces_mem, surfaces_len); |
|
569 |
|
570 /* Expose the back buffer as surface memory */ |
|
571 if ( current->flags & SDL_DOUBLEBUF ) { |
|
572 this->screen = current; |
|
573 DGA_FlipHWSurface(this, current); |
|
574 this->screen = NULL; |
|
575 } |
|
576 |
|
577 /* Set the update rectangle function */ |
|
578 this->UpdateRects = DGA_DirectUpdate; |
|
579 |
|
580 /* Enable mouse and keyboard support */ |
|
581 { long input_mask; |
|
582 input_mask = (KeyPressMask | KeyReleaseMask); |
|
583 input_mask |= (ButtonPressMask | ButtonReleaseMask); |
|
584 input_mask |= PointerMotionMask; |
|
585 SDL_NAME(XDGASelectInput)(DGA_Display, DGA_Screen, input_mask); |
|
586 } |
|
587 |
|
588 /* We're done */ |
|
589 return(current); |
|
590 } |
|
591 |
|
592 #ifdef DGA_DEBUG |
|
593 static void DGA_DumpHWSurfaces(_THIS) |
|
594 { |
|
595 vidmem_bucket *bucket; |
|
596 |
|
597 printf("Memory left: %d (%d total)\n", surfaces_memleft, surfaces_memtotal); |
|
598 printf("\n"); |
|
599 printf(" Base Size\n"); |
|
600 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
|
601 printf("Bucket: %p, %d (%s)\n", bucket->base, bucket->size, bucket->used ? "used" : "free"); |
|
602 if ( bucket->prev ) { |
|
603 if ( bucket->base != bucket->prev->base+bucket->prev->size ) { |
|
604 printf("Warning, corrupt bucket list! (prev)\n"); |
|
605 } |
|
606 } else { |
|
607 if ( bucket != &surfaces ) { |
|
608 printf("Warning, corrupt bucket list! (!prev)\n"); |
|
609 } |
|
610 } |
|
611 if ( bucket->next ) { |
|
612 if ( bucket->next->base != bucket->base+bucket->size ) { |
|
613 printf("Warning, corrupt bucket list! (next)\n"); |
|
614 } |
|
615 } |
|
616 } |
|
617 printf("\n"); |
|
618 } |
|
619 #endif |
|
620 |
|
621 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size) |
|
622 { |
|
623 vidmem_bucket *bucket; |
|
624 |
|
625 surfaces_memtotal = size; |
|
626 surfaces_memleft = size; |
|
627 |
|
628 if ( surfaces_memleft > 0 ) { |
|
629 bucket = (vidmem_bucket *)SDL_malloc(sizeof(*bucket)); |
|
630 if ( bucket == NULL ) { |
|
631 SDL_OutOfMemory(); |
|
632 return(-1); |
|
633 } |
|
634 bucket->prev = &surfaces; |
|
635 bucket->used = 0; |
|
636 bucket->dirty = 0; |
|
637 bucket->base = base; |
|
638 bucket->size = size; |
|
639 bucket->next = NULL; |
|
640 } else { |
|
641 bucket = NULL; |
|
642 } |
|
643 |
|
644 surfaces.prev = NULL; |
|
645 surfaces.used = 1; |
|
646 surfaces.dirty = 0; |
|
647 surfaces.base = screen->pixels; |
|
648 surfaces.size = (unsigned int)((long)base - (long)surfaces.base); |
|
649 surfaces.next = bucket; |
|
650 screen->hwdata = (struct private_hwdata *)&surfaces; |
|
651 return(0); |
|
652 } |
|
653 static void DGA_FreeHWSurfaces(_THIS) |
|
654 { |
|
655 vidmem_bucket *bucket, *freeable; |
|
656 |
|
657 bucket = surfaces.next; |
|
658 while ( bucket ) { |
|
659 freeable = bucket; |
|
660 bucket = bucket->next; |
|
661 SDL_free(freeable); |
|
662 } |
|
663 surfaces.next = NULL; |
|
664 } |
|
665 |
|
666 static __inline__ void DGA_AddBusySurface(SDL_Surface *surface) |
|
667 { |
|
668 ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
|
669 } |
|
670 |
|
671 static __inline__ int DGA_IsSurfaceBusy(SDL_Surface *surface) |
|
672 { |
|
673 return ((vidmem_bucket *)surface->hwdata)->dirty; |
|
674 } |
|
675 |
|
676 static __inline__ void DGA_WaitBusySurfaces(_THIS) |
|
677 { |
|
678 vidmem_bucket *bucket; |
|
679 |
|
680 /* Wait for graphic operations to complete */ |
|
681 SDL_NAME(XDGASync)(DGA_Display, DGA_Screen); |
|
682 |
|
683 /* Clear all surface dirty bits */ |
|
684 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
|
685 bucket->dirty = 0; |
|
686 } |
|
687 } |
|
688 |
|
689 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface) |
|
690 { |
|
691 vidmem_bucket *bucket; |
|
692 int size; |
|
693 int extra; |
|
694 int retval = 0; |
|
695 |
|
696 /* Temporarily, we only allow surfaces the same width as display. |
|
697 Some blitters require the pitch between two hardware surfaces |
|
698 to be the same. Others have interesting alignment restrictions. |
|
699 */ |
|
700 if ( surface->pitch > SDL_VideoSurface->pitch ) { |
|
701 SDL_SetError("Surface requested wider than screen"); |
|
702 return(-1); |
|
703 } |
|
704 surface->pitch = SDL_VideoSurface->pitch; |
|
705 size = surface->h * surface->pitch; |
|
706 #ifdef DGA_DEBUG |
|
707 fprintf(stderr, "Allocating bucket of %d bytes\n", size); |
|
708 #endif |
|
709 LOCK_DISPLAY(); |
|
710 |
|
711 /* Quick check for available mem */ |
|
712 if ( size > surfaces_memleft ) { |
|
713 SDL_SetError("Not enough video memory"); |
|
714 retval = -1; |
|
715 goto done; |
|
716 } |
|
717 |
|
718 /* Search for an empty bucket big enough */ |
|
719 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
|
720 if ( ! bucket->used && (size <= bucket->size) ) { |
|
721 break; |
|
722 } |
|
723 } |
|
724 if ( bucket == NULL ) { |
|
725 SDL_SetError("Video memory too fragmented"); |
|
726 retval = -1; |
|
727 goto done; |
|
728 } |
|
729 |
|
730 /* Create a new bucket for left-over memory */ |
|
731 extra = (bucket->size - size); |
|
732 if ( extra ) { |
|
733 vidmem_bucket *newbucket; |
|
734 |
|
735 #ifdef DGA_DEBUG |
|
736 fprintf(stderr, "Adding new free bucket of %d bytes\n", extra); |
|
737 #endif |
|
738 newbucket = (vidmem_bucket *)SDL_malloc(sizeof(*newbucket)); |
|
739 if ( newbucket == NULL ) { |
|
740 SDL_OutOfMemory(); |
|
741 retval = -1; |
|
742 goto done; |
|
743 } |
|
744 newbucket->prev = bucket; |
|
745 newbucket->used = 0; |
|
746 newbucket->base = bucket->base+size; |
|
747 newbucket->size = extra; |
|
748 newbucket->next = bucket->next; |
|
749 if ( bucket->next ) { |
|
750 bucket->next->prev = newbucket; |
|
751 } |
|
752 bucket->next = newbucket; |
|
753 } |
|
754 |
|
755 /* Set the current bucket values and return it! */ |
|
756 bucket->used = 1; |
|
757 bucket->size = size; |
|
758 bucket->dirty = 0; |
|
759 #ifdef DGA_DEBUG |
|
760 fprintf(stderr, "Allocated %d bytes at %p\n", bucket->size, bucket->base); |
|
761 #endif |
|
762 surfaces_memleft -= size; |
|
763 surface->flags |= SDL_HWSURFACE; |
|
764 surface->pixels = bucket->base; |
|
765 surface->hwdata = (struct private_hwdata *)bucket; |
|
766 done: |
|
767 UNLOCK_DISPLAY(); |
|
768 return(retval); |
|
769 } |
|
770 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface) |
|
771 { |
|
772 vidmem_bucket *bucket, *freeable; |
|
773 |
|
774 /* Wait for any pending operations involving this surface */ |
|
775 if ( DGA_IsSurfaceBusy(surface) ) { |
|
776 LOCK_DISPLAY(); |
|
777 DGA_WaitBusySurfaces(this); |
|
778 UNLOCK_DISPLAY(); |
|
779 } |
|
780 |
|
781 /* Look for the bucket in the current list */ |
|
782 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
|
783 if ( bucket == (vidmem_bucket *)surface->hwdata ) { |
|
784 break; |
|
785 } |
|
786 } |
|
787 if ( bucket && bucket->used ) { |
|
788 /* Add the memory back to the total */ |
|
789 #ifdef DGA_DEBUG |
|
790 printf("Freeing bucket of %d bytes\n", bucket->size); |
|
791 #endif |
|
792 surfaces_memleft += bucket->size; |
|
793 |
|
794 /* Can we merge the space with surrounding buckets? */ |
|
795 bucket->used = 0; |
|
796 if ( bucket->next && ! bucket->next->used ) { |
|
797 #ifdef DGA_DEBUG |
|
798 printf("Merging with next bucket, for %d total bytes\n", bucket->size+bucket->next->size); |
|
799 #endif |
|
800 freeable = bucket->next; |
|
801 bucket->size += bucket->next->size; |
|
802 bucket->next = bucket->next->next; |
|
803 if ( bucket->next ) { |
|
804 bucket->next->prev = bucket; |
|
805 } |
|
806 SDL_free(freeable); |
|
807 } |
|
808 if ( bucket->prev && ! bucket->prev->used ) { |
|
809 #ifdef DGA_DEBUG |
|
810 printf("Merging with previous bucket, for %d total bytes\n", bucket->prev->size+bucket->size); |
|
811 #endif |
|
812 freeable = bucket; |
|
813 bucket->prev->size += bucket->size; |
|
814 bucket->prev->next = bucket->next; |
|
815 if ( bucket->next ) { |
|
816 bucket->next->prev = bucket->prev; |
|
817 } |
|
818 SDL_free(freeable); |
|
819 } |
|
820 } |
|
821 surface->pixels = NULL; |
|
822 surface->hwdata = NULL; |
|
823 } |
|
824 |
|
825 static __inline__ void DGA_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y) |
|
826 { |
|
827 *x = (long)((Uint8 *)dst->pixels - memory_base)%memory_pitch; |
|
828 *y = (long)((Uint8 *)dst->pixels - memory_base)/memory_pitch; |
|
829 } |
|
830 |
|
831 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) |
|
832 { |
|
833 int x, y; |
|
834 unsigned int w, h; |
|
835 |
|
836 /* Don't fill the visible part of the screen, wait until flipped */ |
|
837 LOCK_DISPLAY(); |
|
838 if ( was_flipped && (dst == this->screen) ) { |
|
839 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
|
840 /* Keep waiting for the hardware ... */ ; |
|
841 was_flipped = 0; |
|
842 } |
|
843 DGA_dst_to_xy(this, dst, &x, &y); |
|
844 x += rect->x; |
|
845 y += rect->y; |
|
846 w = rect->w; |
|
847 h = rect->h; |
|
848 #if 0 |
|
849 printf("Hardware accelerated rectangle fill: %dx%d at %d,%d\n", w, h, x, y); |
|
850 #endif |
|
851 SDL_NAME(XDGAFillRectangle)(DGA_Display, DGA_Screen, x, y, w, h, color); |
|
852 if ( !(this->screen->flags & SDL_DOUBLEBUF) ) { |
|
853 XFlush(DGA_Display); |
|
854 } |
|
855 DGA_AddBusySurface(dst); |
|
856 UNLOCK_DISPLAY(); |
|
857 return(0); |
|
858 } |
|
859 |
|
860 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, |
|
861 SDL_Surface *dst, SDL_Rect *dstrect) |
|
862 { |
|
863 SDL_VideoDevice *this; |
|
864 int srcx, srcy; |
|
865 int dstx, dsty; |
|
866 unsigned int w, h; |
|
867 |
|
868 this = current_video; |
|
869 /* Don't blit to the visible part of the screen, wait until flipped */ |
|
870 LOCK_DISPLAY(); |
|
871 if ( was_flipped && (dst == this->screen) ) { |
|
872 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
|
873 /* Keep waiting for the hardware ... */ ; |
|
874 was_flipped = 0; |
|
875 } |
|
876 DGA_dst_to_xy(this, src, &srcx, &srcy); |
|
877 srcx += srcrect->x; |
|
878 srcy += srcrect->y; |
|
879 DGA_dst_to_xy(this, dst, &dstx, &dsty); |
|
880 dstx += dstrect->x; |
|
881 dsty += dstrect->y; |
|
882 w = srcrect->w; |
|
883 h = srcrect->h; |
|
884 #if 0 |
|
885 printf("Blitting %dx%d from %d,%d to %d,%d\n", w, h, srcx, srcy, dstx, dsty); |
|
886 #endif |
|
887 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { |
|
888 SDL_NAME(XDGACopyTransparentArea)(DGA_Display, DGA_Screen, |
|
889 srcx, srcy, w, h, dstx, dsty, src->format->colorkey); |
|
890 } else { |
|
891 SDL_NAME(XDGACopyArea)(DGA_Display, DGA_Screen, |
|
892 srcx, srcy, w, h, dstx, dsty); |
|
893 } |
|
894 if ( !(this->screen->flags & SDL_DOUBLEBUF) ) { |
|
895 XFlush(DGA_Display); |
|
896 } |
|
897 DGA_AddBusySurface(src); |
|
898 DGA_AddBusySurface(dst); |
|
899 UNLOCK_DISPLAY(); |
|
900 return(0); |
|
901 } |
|
902 |
|
903 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) |
|
904 { |
|
905 int accelerated; |
|
906 |
|
907 /* Set initial acceleration on */ |
|
908 src->flags |= SDL_HWACCEL; |
|
909 |
|
910 /* Set the surface attributes */ |
|
911 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { |
|
912 if ( ! this->info.blit_hw_A ) { |
|
913 src->flags &= ~SDL_HWACCEL; |
|
914 } |
|
915 } |
|
916 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { |
|
917 if ( ! this->info.blit_hw_CC ) { |
|
918 src->flags &= ~SDL_HWACCEL; |
|
919 } |
|
920 } |
|
921 |
|
922 /* Check to see if final surface blit is accelerated */ |
|
923 accelerated = !!(src->flags & SDL_HWACCEL); |
|
924 if ( accelerated ) { |
|
925 src->map->hw_blit = HWAccelBlit; |
|
926 } |
|
927 return(accelerated); |
|
928 } |
|
929 |
|
930 static __inline__ void DGA_WaitFlip(_THIS) |
|
931 { |
|
932 if ( was_flipped ) { |
|
933 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
|
934 /* Keep waiting for the hardware ... */ ; |
|
935 was_flipped = 0; |
|
936 } |
|
937 } |
|
938 |
|
939 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface) |
|
940 { |
|
941 if ( surface == this->screen ) { |
|
942 SDL_mutexP(hw_lock); |
|
943 LOCK_DISPLAY(); |
|
944 if ( DGA_IsSurfaceBusy(surface) ) { |
|
945 DGA_WaitBusySurfaces(this); |
|
946 } |
|
947 DGA_WaitFlip(this); |
|
948 UNLOCK_DISPLAY(); |
|
949 } else { |
|
950 if ( DGA_IsSurfaceBusy(surface) ) { |
|
951 LOCK_DISPLAY(); |
|
952 DGA_WaitBusySurfaces(this); |
|
953 UNLOCK_DISPLAY(); |
|
954 } |
|
955 } |
|
956 return(0); |
|
957 } |
|
958 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface) |
|
959 { |
|
960 if ( surface == this->screen ) { |
|
961 SDL_mutexV(hw_lock); |
|
962 } |
|
963 } |
|
964 |
|
965 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface) |
|
966 { |
|
967 /* Wait for vertical retrace and then flip display */ |
|
968 LOCK_DISPLAY(); |
|
969 if ( DGA_IsSurfaceBusy(this->screen) ) { |
|
970 DGA_WaitBusySurfaces(this); |
|
971 } |
|
972 DGA_WaitFlip(this); |
|
973 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, |
|
974 0, flip_yoffset[flip_page], XDGAFlipRetrace); |
|
975 XFlush(DGA_Display); |
|
976 UNLOCK_DISPLAY(); |
|
977 was_flipped = 1; |
|
978 flip_page = !flip_page; |
|
979 |
|
980 surface->pixels = flip_address[flip_page]; |
|
981 return(0); |
|
982 } |
|
983 |
|
984 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) |
|
985 { |
|
986 /* The application is already updating the visible video memory */ |
|
987 return; |
|
988 } |
|
989 |
|
990 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) |
|
991 { |
|
992 int i; |
|
993 XColor *xcmap; |
|
994 |
|
995 /* This happens on initialization */ |
|
996 if ( ! DGA_colormap ) { |
|
997 return(0); |
|
998 } |
|
999 xcmap = SDL_stack_alloc(XColor, ncolors); |
|
1000 for ( i=0; i<ncolors; ++i ) { |
|
1001 xcmap[i].pixel = firstcolor + i; |
|
1002 xcmap[i].red = (colors[i].r<<8)|colors[i].r; |
|
1003 xcmap[i].green = (colors[i].g<<8)|colors[i].g; |
|
1004 xcmap[i].blue = (colors[i].b<<8)|colors[i].b; |
|
1005 xcmap[i].flags = (DoRed|DoGreen|DoBlue); |
|
1006 } |
|
1007 LOCK_DISPLAY(); |
|
1008 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
|
1009 XSync(DGA_Display, False); |
|
1010 UNLOCK_DISPLAY(); |
|
1011 SDL_stack_free(xcmap); |
|
1012 |
|
1013 /* That was easy. :) */ |
|
1014 return(1); |
|
1015 } |
|
1016 |
|
1017 int DGA_SetGammaRamp(_THIS, Uint16 *ramp) |
|
1018 { |
|
1019 int i, ncolors; |
|
1020 XColor xcmap[256]; |
|
1021 |
|
1022 /* See if actually setting the gamma is supported */ |
|
1023 if ( DGA_visualClass != DirectColor ) { |
|
1024 SDL_SetError("Gamma correction not supported on this visual"); |
|
1025 return(-1); |
|
1026 } |
|
1027 |
|
1028 /* Calculate the appropriate palette for the given gamma ramp */ |
|
1029 if ( this->screen->format->BitsPerPixel <= 16 ) { |
|
1030 ncolors = 64; /* Is this right? */ |
|
1031 } else { |
|
1032 ncolors = 256; |
|
1033 } |
|
1034 for ( i=0; i<ncolors; ++i ) { |
|
1035 Uint8 c = (256 * i / ncolors); |
|
1036 xcmap[i].pixel = SDL_MapRGB(this->screen->format, c, c, c); |
|
1037 xcmap[i].red = ramp[0*256+c]; |
|
1038 xcmap[i].green = ramp[1*256+c]; |
|
1039 xcmap[i].blue = ramp[2*256+c]; |
|
1040 xcmap[i].flags = (DoRed|DoGreen|DoBlue); |
|
1041 } |
|
1042 LOCK_DISPLAY(); |
|
1043 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
|
1044 XSync(DGA_Display, False); |
|
1045 UNLOCK_DISPLAY(); |
|
1046 return(0); |
|
1047 } |
|
1048 |
|
1049 void DGA_VideoQuit(_THIS) |
|
1050 { |
|
1051 int i, j; |
|
1052 |
|
1053 if ( DGA_Display ) { |
|
1054 /* Free colormap, if necessary */ |
|
1055 if ( DGA_colormap ) { |
|
1056 XFreeColormap(DGA_Display, DGA_colormap); |
|
1057 DGA_colormap = 0; |
|
1058 } |
|
1059 |
|
1060 /* Unmap memory and reset video mode */ |
|
1061 SDL_NAME(XDGACloseFramebuffer)(DGA_Display, DGA_Screen); |
|
1062 if ( this->screen ) { |
|
1063 /* Tell SDL not to free the pixels */ |
|
1064 DGA_FreeHWSurface(this, this->screen); |
|
1065 } |
|
1066 SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, 0); |
|
1067 |
|
1068 /* Clear the lock mutex */ |
|
1069 if ( hw_lock != NULL ) { |
|
1070 SDL_DestroyMutex(hw_lock); |
|
1071 hw_lock = NULL; |
|
1072 } |
|
1073 #ifdef LOCK_DGA_DISPLAY |
|
1074 if ( event_lock != NULL ) { |
|
1075 SDL_DestroyMutex(event_lock); |
|
1076 event_lock = NULL; |
|
1077 } |
|
1078 #endif /* LOCK_DGA_DISPLAY */ |
|
1079 |
|
1080 /* Clean up defined video modes */ |
|
1081 for ( i=0; i<NUM_MODELISTS; ++i ) { |
|
1082 if ( SDL_modelist[i] != NULL ) { |
|
1083 for ( j=0; SDL_modelist[i][j]; ++j ) { |
|
1084 SDL_free(SDL_modelist[i][j]); |
|
1085 } |
|
1086 SDL_free(SDL_modelist[i]); |
|
1087 SDL_modelist[i] = NULL; |
|
1088 } |
|
1089 } |
|
1090 |
|
1091 /* Clean up the memory bucket list */ |
|
1092 DGA_FreeHWSurfaces(this); |
|
1093 |
|
1094 /* Restore DPMS and screensaver settings */ |
|
1095 X11_RestoreScreenSaver(DGA_Display, screensaver_timeout, dpms_enabled); |
|
1096 |
|
1097 /* Close up the display */ |
|
1098 XCloseDisplay(DGA_Display); |
|
1099 } |
|
1100 } |