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comparison src/video/fbcon/SDL_fbmatrox.c @ 0:74212992fb08

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Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
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children 3dc008dc229d
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1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 Sam Lantinga
20 slouken@devolution.com
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id$";
26 #endif
27
28 #include "SDL_types.h"
29 #include "SDL_video.h"
30 #include "SDL_blit.h"
31 #include "SDL_fbmatrox.h"
32 #include "matrox_mmio.h"
33
34
35 static int LockHWSurface(_THIS, SDL_Surface *surface)
36 {
37 if ( surface == SDL_VideoSurface ) {
38 mga_waitidle();
39 }
40 return(0);
41 }
42 static void UnlockHWSurface(_THIS, SDL_Surface *surface)
43 {
44 return;
45 }
46
47 /* Wait for vertical retrace - taken from the XFree86 Matrox driver */
48 static void WaitVBL(_THIS)
49 {
50 int count;
51
52 /* find start of retrace */
53 mga_waitidle();
54 while ( (mga_in8(0x1FDA) & 0x08) )
55 ;
56 while ( !(mga_in8(0x1FDA) & 0x08) )
57 ;
58 /* wait until we're past the start */
59 count = mga_in32(0x1E20) + 2;
60 while ( mga_in32(0x1E20) < count )
61 ;
62 }
63
64 /* Sets video mem colorkey and accelerated blit function */
65 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key)
66 {
67 return(0);
68 }
69
70 /* Sets per surface hardware alpha value */
71 static int SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 value)
72 {
73 return(0);
74 }
75
76 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color)
77 {
78 int dstX, dstY;
79 Uint32 fxbndry;
80 Uint32 ydstlen;
81 Uint32 fillop;
82
83 switch (dst->format->BytesPerPixel) {
84 case 1:
85 color |= (color<<8);
86 case 2:
87 color |= (color<<16);
88 break;
89 }
90
91 /* Set up the X/Y base coordinates */
92 dstX = 0;
93 dstY = ((char *)dst->pixels - mapped_mem) / SDL_VideoSurface->pitch;
94
95 /* Adjust for the current rectangle */
96 dstX += rect->x;
97 dstY += rect->y;
98
99 /* Set up the X boundaries */
100 fxbndry = (dstX | ((dstX+rect->w) << 16));
101
102 /* Set up the Y boundaries */
103 ydstlen = (rect->h | (dstY << 16));
104
105 #if 0 /* This old way doesn't work on the Matrox G450 */
106 /* Set up for color fill operation */
107 fillop = MGADWG_TRAP | MGADWG_SOLID |
108 MGADWG_ARZERO | MGADWG_SGNZERO | MGADWG_SHIFTZERO |
109 MGADWG_BFCOL | MGADWG_BLK;
110
111 /* Execute the operations! */
112 mga_wait(4);
113 mga_out32(MGAREG_FCOL, color);
114 mga_out32(MGAREG_FXBNDRY, fxbndry);
115 mga_out32(MGAREG_YDSTLEN, ydstlen);
116 mga_out32(MGAREG_DWGCTL + MGAREG_EXEC, fillop);
117 #else
118 /* Set up for color fill operation */
119 fillop = MGADWG_TRAP | MGADWG_SOLID |
120 MGADWG_ARZERO | MGADWG_SGNZERO | MGADWG_SHIFTZERO;
121
122 /* Execute the operations! */
123 mga_wait(5);
124 mga_out32(MGAREG_DWGCTL, fillop | MGADWG_REPLACE);
125 mga_out32(MGAREG_FCOL, color);
126 mga_out32(MGAREG_FXBNDRY, fxbndry);
127 mga_out32(MGAREG_YDSTLEN + MGAREG_EXEC, ydstlen);
128 #endif
129
130 return(0);
131 }
132
133 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
134 SDL_Surface *dst, SDL_Rect *dstrect)
135 {
136 SDL_VideoDevice *this;
137 int bpp;
138 int srcX, srcY;
139 int dstX, dstY;
140 Uint32 sign;
141 Uint32 sstart, sstop;
142 int sskip;
143 Uint32 blitop;
144
145 /* FIXME: For now, only blit to display surface */
146 if ( dst->pitch != SDL_VideoSurface->pitch ) {
147 return(src->map->sw_blit(src, srcrect, dst, dstrect));
148 }
149
150 /* Calculate source and destination base coordinates (in pixels) */
151 this = current_video;
152 srcX= 0; /* FIXME: Calculate this from memory offset */
153 srcY = ((char *)src->pixels - mapped_mem) / SDL_VideoSurface->pitch;
154 dstX = 0; /* FIXME: Calculate this from memory offset */
155 dstY = ((char *)dst->pixels - mapped_mem) / SDL_VideoSurface->pitch;
156
157 /* Adjust for the current blit rectangles */
158 srcX += srcrect->x;
159 srcY += srcrect->y;
160 dstX += dstrect->x;
161 dstY += dstrect->y;
162
163 /* Set up the blit direction (sign) flags */
164 sign = 0;
165 if ( srcX < dstX ) {
166 sign |= 1;
167 }
168 if ( srcY < dstY ) {
169 sign |= 4;
170 }
171
172 /* Set up the blit source row start, end, and skip (in pixels) */
173 bpp = src->format->BytesPerPixel;
174 sstop = sstart = ((srcY * SDL_VideoSurface->pitch)/bpp) + srcX;
175 if ( srcX < dstX ) {
176 sstart += (dstrect->w - 1);
177 } else {
178 sstop += (dstrect->w - 1);
179 }
180 sskip = src->pitch/bpp;
181 if ( srcY < dstY ) {
182 sskip = -sskip;
183 }
184
185 /* Set up the blit operation */
186 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
187 Uint32 colorkey;
188
189 blitop = MGADWG_BFCOL | MGADWG_BITBLT |
190 MGADWG_SHIFTZERO | MGADWG_RSTR | (0x0C << 16) |
191 MGADWG_TRANSC;
192
193 colorkey = src->format->colorkey;
194 switch (dst->format->BytesPerPixel) {
195 case 1:
196 colorkey |= (colorkey<<8);
197 case 2:
198 colorkey |= (colorkey<<16);
199 break;
200 }
201 mga_wait(2);
202 mga_out32(MGAREG_FCOL, colorkey);
203 mga_out32(MGAREG_BCOL, 0xFFFFFFFF);
204 } else {
205 blitop = MGADWG_BFCOL | MGADWG_BITBLT |
206 MGADWG_SHIFTZERO | MGADWG_RSTR | (0x0C << 16);
207 }
208 mga_wait(7);
209 mga_out32(MGAREG_SGN, sign);
210 mga_out32(MGAREG_AR3, sstart);
211 mga_out32(MGAREG_AR0, sstop);
212 mga_out32(MGAREG_AR5, sskip);
213 mga_out32(MGAREG_FXBNDRY, (dstX | ((dstX + dstrect->w-1) << 16)));
214 mga_out32(MGAREG_YDSTLEN, (dstY << 16) | dstrect->h);
215 mga_out32(MGAREG_DWGCTL + MGAREG_EXEC, blitop);
216
217 return(0);
218 }
219
220 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst)
221 {
222 int accelerated;
223
224 /* Set initial acceleration on */
225 src->flags |= SDL_HWACCEL;
226
227 /* Set the surface attributes */
228 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
229 if ( ! this->info.blit_hw_A ) {
230 src->flags &= ~SDL_HWACCEL;
231 }
232 }
233 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
234 if ( ! this->info.blit_hw_CC ) {
235 src->flags &= ~SDL_HWACCEL;
236 }
237 }
238
239 /* Check to see if final surface blit is accelerated */
240 accelerated = !!(src->flags & SDL_HWACCEL);
241 if ( accelerated ) {
242 src->map->hw_blit = HWAccelBlit;
243 }
244 return(accelerated);
245 }
246
247 void FB_MatroxAccel(_THIS, __u32 card)
248 {
249 /* We have hardware accelerated surface functions */
250 this->CheckHWBlit = CheckHWBlit;
251 this->LockHWSurface = LockHWSurface;
252 this->UnlockHWSurface = UnlockHWSurface;
253 wait_vbl = WaitVBL;
254
255 /* The Matrox has an accelerated color fill */
256 this->info.blit_fill = 1;
257 this->FillHWRect = FillHWRect;
258
259 /* The Matrox has accelerated normal and colorkey blits. */
260 this->info.blit_hw = 1;
261 /* The Millenium I appears to do the colorkey test a word
262 at a time, and the transparency is intverted. (?)
263 */
264 if ( card != FB_ACCEL_MATROX_MGA2064W ) {
265 this->info.blit_hw_CC = 1;
266 this->SetHWColorKey = SetHWColorKey;
267 }
268
269 #if 0 /* Not yet implemented? */
270 /* The Matrox G200/G400 has an accelerated alpha blit */
271 if ( (card == FB_ACCEL_MATROX_MGAG200)
272 || (card == FB_ACCEL_MATROX_MGAG400)
273 ) {
274 this->info.blit_hw_A = 1;
275 this->SetHWAlpha = SetHWAlpha;
276 }
277 #endif
278 }