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