annotate src/video/fbcon/SDL_fb3dfx.c @ 4134:31c7c57af8a4 SDL-1.2

Updates for building on Windows CE using mingw32ce cross compiler: http://sourceforge.net/mailarchive/forum.php?thread_name 0703291652.38437.jwalt%40garni.ch&forum_name=cegcc-devel Hi! I just managed to compile SDL for Windows CE using the "mingw32ce" configuration of http://cegcc.sourceforge.net. Test programs work as expected (except for those using signals -- no POSIX on mingw32ce), and I didn't yet encounter any problem. While it was a pain to get everything compiled and running, the changes to SDL are actually quite small (see attached SDL-ce.diff). Unfortunately, the win32 headers shipped with cegcc are not 100% correct, and it feels quite messy to work around them in SDL code, so those headers will also need to be patched. (Attachment: win32api-ce.diff) Since I had to apply the libtool patch from the cegcc patch, I have also ad ded my copy of aclocal.m4 for SDL. I had to modify the cegcc libtool patch to use "lt_cv_deplibs_check_method=pass_all" for mingw32ce, otherwise libtool would not recognize the import libraries as valid for dynamic linking. All these changes should not affect non-WinCE builds, so they could be included in mainline SDL. If you need some docs, you can use this description for a cross-compilation README: 1) get cegcc from http://cegcc.sourceforge.net 2) build and install the "mingw32ce" variant (see cegcc installation docs) 3) patch w32api-headers (if not yet included in cegcc) 4) setup environment (customize the first three lines as you like): PREFIX=/opt/mingw32ce TARGET=arm-wince-mingw32ce BUILD=`uname -m`-pc-linux-gnu export PATH="$PREFIX/bin:$PREFIX/$TARGET/bin:$PREFIX/local/bin:$PATH" export CFLAGS="${CFLAGS:- -O2 -g} -I$PREFIX/local/include" export CPPFLAGS="${CPPFLAGS:- -O2 -g} -I$PREFIX/local/include" export CXXFLAGS="${CXXFLAGS:- -O2 -g} -I$PREFIX/local/include" export LDFLAGS="${LDFLAGS:- -O2 -g} -L$PREFIX/local/lib" export HOST_CC="gcc" export CC="$PREFIX/bin/$TARGET-gcc" export CXX="$PREFIX/bin/$TARGET-g++" export LD="$PREFIX/bin/$TARGET-ld" export AS="$PREFIX/bin/$TARGET-as" export AR="$PREFIX/bin/$TARGET-ar" export RANLIB="$PREFIX/bin/$TARGET-ranlib" export CONFIG_SHELL="/bin/sh" 5) build and install ./configure --target=$TARGET --host=$TARGET --build=$BUILD make make install 6) use (4) and (5) for any SDL-using software you want to cross-compile 7) copy $PREFIX/local/bin/SDL-1-2-0.dll into your executable directory on the WinCE machine
author Sam Lantinga <slouken@libsdl.org>
date Thu, 03 Jan 2008 06:19:07 +0000
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children a1b03ba2fcd0
rev   line source
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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 #include "SDL_video.h"
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25 #include "../SDL_blit.h"
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26 #include "SDL_fb3dfx.h"
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27 #include "3dfx_mmio.h"
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28
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29
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30 /* Wait for vertical retrace */
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31 static void WaitVBL(_THIS)
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32 {
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33 /* find start of retrace */
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34 tdfx_waitidle();
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35 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == STATUS_RETRACE )
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36 ;
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37 /* wait until we're past the start */
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38 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == 0 )
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39 ;
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40 }
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41 static void WaitIdle(_THIS)
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42 {
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43 tdfx_waitidle();
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44 }
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45
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46 /* Sets video mem colorkey and accelerated blit function */
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47 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key)
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48 {
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49 return(0);
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50 }
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51
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52 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color)
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53 {
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54 int bpp;
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55 Uint32 dst_base;
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56 Uint32 format;
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57 int dstX, dstY;
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58
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59 /* Don't blit to the display surface when switched away */
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60 if ( switched_away ) {
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61 return -2; /* no hardware access */
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62 }
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63 if ( dst == this->screen ) {
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64 SDL_mutexP(hw_lock);
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65 }
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66
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67 /* Set the destination pixel format */
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68 dst_base = ((char *)dst->pixels - mapped_mem);
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69 bpp = dst->format->BitsPerPixel;
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70 format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13);
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71
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72 /* Calculate source and destination base coordinates */
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73 dstX = rect->x;
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74 dstY = rect->y;
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75
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76 /* Execute the fill command */
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77 tdfx_wait(6);
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78 tdfx_out32(DSTBASE, dst_base);
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79 tdfx_out32(DSTFORMAT, format);
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80 tdfx_out32(COLORFORE, color);
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81 tdfx_out32(COMMAND_2D, COMMAND_2D_FILLRECT);
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82 tdfx_out32(DSTSIZE, rect->w | (rect->h << 16));
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83 tdfx_out32(LAUNCH_2D, dstX | (dstY << 16));
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84
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85 FB_AddBusySurface(dst);
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86
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87 if ( dst == this->screen ) {
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88 SDL_mutexV(hw_lock);
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89 }
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90 return(0);
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91 }
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92
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93 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
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94 SDL_Surface *dst, SDL_Rect *dstrect)
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95 {
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96 SDL_VideoDevice *this = current_video;
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97 int bpp;
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98 Uint32 src_format;
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99 Uint32 dst_format;
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100 Uint32 src_base;
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101 Uint32 dst_base;
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102 int srcX, srcY;
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103 int dstX, dstY;
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104 Uint32 blitop;
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105 Uint32 use_colorkey;
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106
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107 /* Don't blit to the display surface when switched away */
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108 if ( switched_away ) {
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109 return -2; /* no hardware access */
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110 }
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111 if ( dst == this->screen ) {
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112 SDL_mutexP(hw_lock);
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113 }
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114
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115 /* Set the source and destination pixel format */
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116 src_base = ((char *)src->pixels - mapped_mem);
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117 bpp = src->format->BitsPerPixel;
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118 src_format = src->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13);
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119 dst_base = ((char *)dst->pixels - mapped_mem);
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120 bpp = dst->format->BitsPerPixel;
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121 dst_format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13);
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122
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123 srcX = srcrect->x;
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124 srcY = srcrect->y;
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125 dstX = dstrect->x;
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126 dstY = dstrect->y;
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127
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128 /* Assemble the blit operation */
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129 blitop = COMMAND_2D_BITBLT | (0xCC << 24);
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130 if ( srcX <= dstX ) {
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131 blitop |= BIT(14);
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132 srcX += (dstrect->w - 1);
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133 dstX += (dstrect->w - 1);
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134 }
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135 if ( srcY <= dstY ) {
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136 blitop |= BIT(15);
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137 srcY += (dstrect->h - 1);
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138 dstY += (dstrect->h - 1);
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139 }
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140
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141 /* Perform the blit! */
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142 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
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143 tdfx_wait(3);
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144 tdfx_out32(SRCCOLORKEYMIN, src->format->colorkey);
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145 tdfx_out32(SRCCOLORKEYMAX, src->format->colorkey);
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146 tdfx_out32(ROP_2D, 0xAA00);
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147 use_colorkey = 1;
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148 } else {
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149 use_colorkey = 0;
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150 }
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151 tdfx_wait(9);
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152 tdfx_out32(SRCBASE, (Uint32)src_base);
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153 tdfx_out32(SRCFORMAT, src_format);
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154 tdfx_out32(DSTBASE, (Uint32)dst_base);
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155 tdfx_out32(DSTFORMAT, src_format);
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156 tdfx_out32(COMMAND_2D, blitop);
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157 tdfx_out32(COMMANDEXTRA_2D, use_colorkey);
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158 tdfx_out32(DSTSIZE, dstrect->w | (dstrect->h << 16));
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159 tdfx_out32(DSTXY, dstX | (dstY << 16));
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160 tdfx_out32(LAUNCH_2D, srcX | (srcY << 16));
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161
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162 FB_AddBusySurface(src);
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163 FB_AddBusySurface(dst);
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164
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165 if ( dst == this->screen ) {
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166 SDL_mutexV(hw_lock);
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167 }
0
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168 return(0);
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169 }
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170
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171 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst)
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172 {
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173 int accelerated;
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174
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175 /* Set initial acceleration on */
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176 src->flags |= SDL_HWACCEL;
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177
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178 /* Set the surface attributes */
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179 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
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180 if ( ! this->info.blit_hw_A ) {
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181 src->flags &= ~SDL_HWACCEL;
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182 }
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183 }
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184 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
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185 if ( ! this->info.blit_hw_CC ) {
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186 src->flags &= ~SDL_HWACCEL;
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187 }
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188 }
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189
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190 /* Check to see if final surface blit is accelerated */
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191 accelerated = !!(src->flags & SDL_HWACCEL);
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192 if ( accelerated ) {
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193 src->map->hw_blit = HWAccelBlit;
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194 }
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195 return(accelerated);
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196 }
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197
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198 void FB_3DfxAccel(_THIS, __u32 card)
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199 {
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200 /* We have hardware accelerated surface functions */
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201 this->CheckHWBlit = CheckHWBlit;
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202 wait_vbl = WaitVBL;
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203 wait_idle = WaitIdle;
0
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204
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205 /* Reset the 3Dfx controller */
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206 tdfx_out32(BRESERROR0, 0);
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207 tdfx_out32(BRESERROR1, 0);
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208
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209 /* The 3Dfx has an accelerated color fill */
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210 this->info.blit_fill = 1;
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211 this->FillHWRect = FillHWRect;
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212
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213 /* The 3Dfx has accelerated normal and colorkey blits */
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214 this->info.blit_hw = 1;
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215 this->info.blit_hw_CC = 1;
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216 this->SetHWColorKey = SetHWColorKey;
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217 }