annotate src/video/cybergfx/SDL_cgxaccel.c @ 1830:19555149bb66

Add a reminder to fix current->w,current->h
author Patrice Mandin <patmandin@gmail.com>
date Sun, 14 May 2006 09:55:22 +0000
parents d910939febfa
children 782fd950bd46 c121d94672cb
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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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_endian.h"
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25 #include "SDL_video.h"
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26 #include "../SDL_sysvideo.h"
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27 #include "../SDL_blit.h"
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28 #include "SDL_cgxvideo.h"
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29
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30 static int CGX_HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
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31 SDL_Surface *dst, SDL_Rect *dstrect);
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32
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33 // These are needed to avoid register troubles with gcc -O2!
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34
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35 #if defined(__SASC) || defined(__PPC__) || defined(MORPHOS)
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36 #define BMKBRP(a,b,c,d,e,f,g,h,i,j) BltMaskBitMapRastPort(a,b,c,d,e,f,g,h,i,j)
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37 #define BBRP(a,b,c,d,e,f,g,h,i) BltBitMapRastPort(a,b,c,d,e,f,g,h,i)
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38 #define BBB(a,b,c,d,e,f,g,h,i,j,k) BltBitMap(a,b,c,d,e,f,g,h,i,j,k)
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39 #else
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40 void BMKBRP(struct BitMap *a,WORD b, WORD c,struct RastPort *d,WORD e,WORD f,WORD g,WORD h,UBYTE i,APTR j)
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41 {BltMaskBitMapRastPort(a,b,c,d,e,f,g,h,i,j);}
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42
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43 void BBRP(struct BitMap *a,WORD b, WORD c,struct RastPort *d,WORD e,WORD f,WORD g,WORD h,UBYTE i)
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44 {BltBitMapRastPort(a,b,c,d,e,f,g,h,i);}
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45
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46 void BBB(struct BitMap *a,WORD b, WORD c,struct BitMap *d,WORD e,WORD f,WORD g,WORD h,UBYTE i,UBYTE j,UWORD *k)
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47 {BltBitMap(a,b,c,d,e,f,g,h,i,j,k);}
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48 #endif
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49
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50 int CGX_SetHWColorKey(_THIS,SDL_Surface *surface, Uint32 key)
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51 {
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52 if(surface->hwdata)
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53 {
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54 if(surface->hwdata->mask)
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55 SDL_free(surface->hwdata->mask);
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56
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57 if(surface->hwdata->mask=SDL_malloc(RASSIZE(surface->w,surface->h)))
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58 {
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59 Uint32 pitch,ok=0;
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60 APTR lock;
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61
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62 SDL_memset(surface->hwdata->mask,255,RASSIZE(surface->w,surface->h));
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63
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64 D(bug("Building colorkey mask: color: %ld, size: %ld x %ld, %ld bytes...Bpp:%ld\n",key,surface->w,surface->h,RASSIZE(surface->w,surface->h),surface->format->BytesPerPixel));
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65
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66 if(lock=LockBitMapTags(surface->hwdata->bmap,LBMI_BASEADDRESS,(ULONG)&surface->pixels,
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67 LBMI_BYTESPERROW,(ULONG)&pitch,TAG_DONE))
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68 {
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69 switch(surface->format->BytesPerPixel)
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70 {
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71 case 1:
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72 {
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73 unsigned char k=key;
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74 register int i,j,t;
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75 register unsigned char *dest=surface->hwdata->mask,*map=surface->pixels;
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76
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77 pitch-=surface->w;
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78
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79 for(i=0;i<surface->h;i++)
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80 {
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81 for(t=128,j=0;j<surface->w;j++)
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82 {
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83 if(*map==k)
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84 *dest&=~t;
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85
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86 t>>=1;
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87
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88 if(t==0)
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89 {
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90 dest++;
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91 t=128;
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92 }
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93 map++;
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94 }
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95 map+=pitch;
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96 }
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97 }
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98 break;
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99 case 2:
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100 {
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101 Uint16 k=key,*mapw;
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102 register int i,j,t;
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103 register unsigned char *dest=surface->hwdata->mask,*map=surface->pixels;
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104
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105 for(i=surface->h;i;--i)
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106 {
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107 mapw=(Uint16 *)map;
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108
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109 for(t=128,j=surface->w;j;--j)
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110 {
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111 if(*mapw==k)
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112 *dest&=~t;
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113
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114 t>>=1;
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115
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116 if(t==0)
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117 {
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118 dest++;
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119 t=128;
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120 }
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121 mapw++;
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122 }
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123 map+=pitch;
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124 }
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125 }
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126 break;
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127 case 4:
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128 {
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129 Uint32 *mapl;
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130 register int i,j,t;
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131 register unsigned char *dest=surface->hwdata->mask,*map=surface->pixels;
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132
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133 for(i=surface->h;i;--i)
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134 {
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135 mapl=(Uint32 *)map;
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136
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137 for(t=128,j=surface->w;j;--j)
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138 {
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139 if(*mapl==key)
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140 *dest&=~t;
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141
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142 t>>=1;
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143
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144 if(t==0)
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145 {
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146 dest++;
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147 t=128;
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148 }
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149 mapl++;
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150 }
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151 map+=pitch;
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152 }
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153
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154 }
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155 break;
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156 default:
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157 D(bug("Pixel mode non supported for color key..."));
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158 SDL_free(surface->hwdata->mask);
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159 surface->hwdata->mask=NULL;
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160 ok=-1;
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161 }
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162 UnLockBitMap(lock);
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163 D(bug("...Colorkey built!\n"));
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164 return ok;
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165 }
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166 }
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167 }
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168 D(bug("HW colorkey not supported for this depth\n"));
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169
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170 return -1;
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171 }
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172
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173 int CGX_CheckHWBlit(_THIS,SDL_Surface *src,SDL_Surface *dst)
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174 {
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175 // Doesn't support yet alpha blitting
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176
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177 if(src->hwdata&& !(src->flags & (SDL_SRCALPHA)))
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178 {
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179 D(bug("CheckHW blit... OK!\n"));
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180
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181 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
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182 if ( CGX_SetHWColorKey(this, src, src->format->colorkey) < 0 ) {
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183 src->flags &= ~SDL_HWACCEL;
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184 return -1;
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185 }
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186 }
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187
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188 src->flags|=SDL_HWACCEL;
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189 src->map->hw_blit = CGX_HWAccelBlit;
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190 return 1;
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191 }
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192 else
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193 src->flags &= ~SDL_HWACCEL;
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194
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195 D(bug("CheckHW blit... NO!\n"));
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196
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197 return 0;
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198 }
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199
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200 static int temprp_init=0;
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201 static struct RastPort temprp;
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202
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203 static int CGX_HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
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204 SDL_Surface *dst, SDL_Rect *dstrect)
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205 {
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206 struct SDL_VideoDevice *this=src->hwdata->videodata;
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207
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208 // D(bug("Accel blit!\n"));
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209
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210 if(src->flags&SDL_SRCCOLORKEY && src->hwdata->mask)
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211 {
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212 if(dst==SDL_VideoSurface)
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213 {
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214 BMKBRP(src->hwdata->bmap,srcrect->x,srcrect->y,
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215 SDL_RastPort,dstrect->x+SDL_Window->BorderLeft,dstrect->y+SDL_Window->BorderTop,
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216 srcrect->w,srcrect->h,0xc0,src->hwdata->mask);
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217 }
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218 else if(dst->hwdata)
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219 {
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220 if(!temprp_init)
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221 {
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222 InitRastPort(&temprp);
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223 temprp_init=1;
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224 }
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225 temprp.BitMap=(struct BitMap *)dst->hwdata->bmap;
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226
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227 BMKBRP(src->hwdata->bmap,srcrect->x,srcrect->y,
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228 &temprp,dstrect->x,dstrect->y,
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229 srcrect->w,srcrect->h,0xc0,src->hwdata->mask);
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230
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231 }
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232 }
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233 else if(dst==SDL_VideoSurface)
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234 {
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235 BBRP(src->hwdata->bmap,srcrect->x,srcrect->y,SDL_RastPort,dstrect->x+SDL_Window->BorderLeft,dstrect->y+SDL_Window->BorderTop,srcrect->w,srcrect->h,0xc0);
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236 }
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237 else if(dst->hwdata)
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238 BBB(src->hwdata->bmap,srcrect->x,srcrect->y,dst->hwdata->bmap,dstrect->x,dstrect->y,srcrect->w,srcrect->h,0xc0,0xff,NULL);
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
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239
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
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240 return 0;
0
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241 }
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242
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243 int CGX_FillHWRect(_THIS,SDL_Surface *dst,SDL_Rect *dstrect,Uint32 color)
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244 {
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245 if(dst==SDL_VideoSurface)
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246 {
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247 FillPixelArray(SDL_RastPort,dstrect->x+SDL_Window->BorderLeft,dstrect->y+SDL_Window->BorderTop,dstrect->w,dstrect->h,color);
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248 }
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249 else if(dst->hwdata)
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250 {
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251 if(!temprp_init)
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252 {
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253 InitRastPort(&temprp);
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254 temprp_init=1;
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255 }
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256
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257 temprp.BitMap=(struct BitMap *)dst->hwdata->bmap;
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258
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259 FillPixelArray(&temprp,dstrect->x,dstrect->y,dstrect->w,dstrect->h,color);
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260 }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
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diff changeset
261 return 0;
0
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262 }