1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 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 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 #include "SDL_video.h"
25 #include "../SDL_blit.h"
26 #include "SDL_fbmatrox.h"
27 #include "matrox_mmio.h"
28
29
30 /* Wait for vertical retrace - taken from the XFree86 Matrox driver */
WaitVBL(_THIS)31 static void WaitVBL(_THIS)
32 {
33 int count;
34
35 /* find start of retrace */
36 mga_waitidle();
37 while ( (mga_in8(0x1FDA) & 0x08) )
38 ;
39 while ( !(mga_in8(0x1FDA) & 0x08) )
40 ;
41 /* wait until we're past the start */
42 count = mga_in32(0x1E20) + 2;
43 while ( mga_in32(0x1E20) < count )
44 ;
45 }
WaitIdle(_THIS)46 static void WaitIdle(_THIS)
47 {
48 mga_waitidle();
49 }
50
51 /* Sets video mem colorkey and accelerated blit function */
SetHWColorKey(_THIS,SDL_Surface * surface,Uint32 key)52 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key)
53 {
54 return(0);
55 }
56
57 /* Sets per surface hardware alpha value */
58 #if 0
59 static int SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 value)
60 {
61 return(0);
62 }
63 #endif
64
FillHWRect(_THIS,SDL_Surface * dst,SDL_Rect * rect,Uint32 color)65 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color)
66 {
67 int dstX, dstY;
68 Uint32 fxbndry;
69 Uint32 ydstlen;
70 Uint32 fillop;
71
72 /* Don't blit to the display surface when switched away */
73 if ( switched_away ) {
74 return -2; /* no hardware access */
75 }
76 if ( dst == this->screen ) {
77 SDL_mutexP(hw_lock);
78 }
79
80 switch (dst->format->BytesPerPixel) {
81 case 1:
82 color |= (color<<8);
83 case 2:
84 color |= (color<<16);
85 break;
86 }
87
88 /* Set up the X/Y base coordinates */
89 FB_dst_to_xy(this, dst, &dstX, &dstY);
90
91 /* Adjust for the current rectangle */
92 dstX += rect->x;
93 dstY += rect->y;
94
95 /* Set up the X boundaries */
96 fxbndry = (dstX | ((dstX+rect->w) << 16));
97
98 /* Set up the Y boundaries */
99 ydstlen = (rect->h | (dstY << 16));
100
101 /* Set up for color fill operation */
102 fillop = MGADWG_TRAP | MGADWG_SOLID |
103 MGADWG_ARZERO | MGADWG_SGNZERO | MGADWG_SHIFTZERO;
104
105 /* Execute the operations! */
106 mga_wait(5);
107 mga_out32(MGAREG_DWGCTL, fillop | MGADWG_REPLACE);
108 mga_out32(MGAREG_FCOL, color);
109 mga_out32(MGAREG_FXBNDRY, fxbndry);
110 mga_out32(MGAREG_YDSTLEN + MGAREG_EXEC, ydstlen);
111
112 FB_AddBusySurface(dst);
113
114 if ( dst == this->screen ) {
115 SDL_mutexV(hw_lock);
116 }
117 return(0);
118 }
119
HWAccelBlit(SDL_Surface * src,SDL_Rect * srcrect,SDL_Surface * dst,SDL_Rect * dstrect)120 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
121 SDL_Surface *dst, SDL_Rect *dstrect)
122 {
123 SDL_VideoDevice *this = current_video;
124 int pitch, w, h;
125 int srcX, srcY;
126 int dstX, dstY;
127 Uint32 sign;
128 Uint32 start, stop;
129 int skip;
130 Uint32 blitop;
131
132 /* FIXME: For now, only blit to display surface */
133 if ( dst->pitch != SDL_VideoSurface->pitch ) {
134 return(src->map->sw_blit(src, srcrect, dst, dstrect));
135 }
136
137 /* Don't blit to the display surface when switched away */
138 if ( switched_away ) {
139 return -2; /* no hardware access */
140 }
141 if ( dst == this->screen ) {
142 SDL_mutexP(hw_lock);
143 }
144
145 /* Calculate source and destination base coordinates (in pixels) */
146 w = dstrect->w;
147 h = dstrect->h;
148 FB_dst_to_xy(this, src, &srcX, &srcY);
149 FB_dst_to_xy(this, dst, &dstX, &dstY);
150
151 /* Adjust for the current blit rectangles */
152 srcX += srcrect->x;
153 srcY += srcrect->y;
154 dstX += dstrect->x;
155 dstY += dstrect->y;
156 pitch = dst->pitch/dst->format->BytesPerPixel;
157
158 /* Set up the blit direction (sign) flags */
159 sign = 0;
160 if ( srcX < dstX ) {
161 sign |= 1;
162 }
163 if ( srcY < dstY ) {
164 sign |= 4;
165 srcY += (h - 1);
166 dstY += (h - 1);
167 }
168
169 /* Set up the blit source row start, end, and skip (in pixels) */
170 stop = start = (srcY * pitch) + srcX;
171 if ( srcX < dstX ) {
172 start += (w - 1);
173 } else {
174 stop += (w - 1);
175 }
176 if ( srcY < dstY ) {
177 skip = -pitch;
178 } else {
179 skip = pitch;
180 }
181
182 /* Set up the blit operation */
183 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
184 Uint32 colorkey;
185
186 blitop = MGADWG_BFCOL | MGADWG_BITBLT |
187 MGADWG_SHIFTZERO | MGADWG_RSTR | (0x0C << 16) |
188 MGADWG_TRANSC;
189
190 colorkey = src->format->colorkey;
191 switch (dst->format->BytesPerPixel) {
192 case 1:
193 colorkey |= (colorkey<<8);
194 case 2:
195 colorkey |= (colorkey<<16);
196 break;
197 }
198 mga_wait(2);
199 mga_out32(MGAREG_FCOL, colorkey);
200 mga_out32(MGAREG_BCOL, 0xFFFFFFFF);
201 } else {
202 blitop = MGADWG_BFCOL | MGADWG_BITBLT |
203 MGADWG_SHIFTZERO | MGADWG_RSTR | (0x0C << 16);
204 }
205 mga_wait(7);
206 mga_out32(MGAREG_SGN, sign);
207 mga_out32(MGAREG_AR3, start);
208 mga_out32(MGAREG_AR0, stop);
209 mga_out32(MGAREG_AR5, skip);
210 mga_out32(MGAREG_FXBNDRY, (dstX | ((dstX + w-1) << 16)));
211 mga_out32(MGAREG_YDSTLEN, (dstY << 16) | h);
212 mga_out32(MGAREG_DWGCTL + MGAREG_EXEC, blitop);
213
214 FB_AddBusySurface(src);
215 FB_AddBusySurface(dst);
216
217 if ( dst == this->screen ) {
218 SDL_mutexV(hw_lock);
219 }
220 return(0);
221 }
222
CheckHWBlit(_THIS,SDL_Surface * src,SDL_Surface * dst)223 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst)
224 {
225 int accelerated;
226
227 /* Set initial acceleration on */
228 src->flags |= SDL_HWACCEL;
229
230 /* Set the surface attributes */
231 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
232 if ( ! this->info.blit_hw_A ) {
233 src->flags &= ~SDL_HWACCEL;
234 }
235 }
236 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
237 if ( ! this->info.blit_hw_CC ) {
238 src->flags &= ~SDL_HWACCEL;
239 }
240 }
241
242 /* Check to see if final surface blit is accelerated */
243 accelerated = !!(src->flags & SDL_HWACCEL);
244 if ( accelerated ) {
245 src->map->hw_blit = HWAccelBlit;
246 }
247 return(accelerated);
248 }
249
FB_MatroxAccel(_THIS,__u32 card)250 void FB_MatroxAccel(_THIS, __u32 card)
251 {
252 /* We have hardware accelerated surface functions */
253 this->CheckHWBlit = CheckHWBlit;
254 wait_vbl = WaitVBL;
255 wait_idle = WaitIdle;
256
257 /* The Matrox has an accelerated color fill */
258 this->info.blit_fill = 1;
259 this->FillHWRect = FillHWRect;
260
261 /* The Matrox has accelerated normal and colorkey blits. */
262 this->info.blit_hw = 1;
263 /* The Millenium I appears to do the colorkey test a word
264 at a time, and the transparency is intverted. (?)
265 */
266 if ( card != FB_ACCEL_MATROX_MGA2064W ) {
267 this->info.blit_hw_CC = 1;
268 this->SetHWColorKey = SetHWColorKey;
269 }
270
271 #if 0 /* Not yet implemented? */
272 /* The Matrox G200/G400 has an accelerated alpha blit */
273 if ( (card == FB_ACCEL_MATROX_MGAG200)
274 || (card == FB_ACCEL_MATROX_MGAG400)
275 ) {
276 this->info.blit_hw_A = 1;
277 this->SetHWAlpha = SetHWAlpha;
278 }
279 #endif
280 }
281