|
0
|
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_fb3dfx.h"
|
|
|
32 #include "3dfx_mmio.h"
|
|
|
33
|
|
|
34
|
|
|
35 static int LockHWSurface(_THIS, SDL_Surface *surface)
|
|
|
36 {
|
|
|
37 if ( surface == SDL_VideoSurface ) {
|
|
|
38 tdfx_waitidle();
|
|
|
39 }
|
|
|
40 return(0);
|
|
|
41 }
|
|
|
42 static void UnlockHWSurface(_THIS, SDL_Surface *surface)
|
|
|
43 {
|
|
|
44 return;
|
|
|
45 }
|
|
|
46
|
|
|
47 /* Wait for vertical retrace */
|
|
|
48 static void WaitVBL(_THIS)
|
|
|
49 {
|
|
|
50 /* find start of retrace */
|
|
|
51 tdfx_waitidle();
|
|
|
52 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == STATUS_RETRACE )
|
|
|
53 ;
|
|
|
54 /* wait until we're past the start */
|
|
|
55 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == 0 )
|
|
|
56 ;
|
|
|
57 }
|
|
|
58
|
|
|
59 /* Sets video mem colorkey and accelerated blit function */
|
|
|
60 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key)
|
|
|
61 {
|
|
|
62 return(0);
|
|
|
63 }
|
|
|
64
|
|
|
65 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color)
|
|
|
66 {
|
|
|
67 int bpp;
|
|
|
68 char *dst_base;
|
|
|
69 Uint32 format;
|
|
|
70 int dstX, dstY;
|
|
|
71
|
|
|
72 /* Set the destination pixel format */
|
|
|
73 dst_base = (char *)((char *)dst->pixels - mapped_mem);
|
|
|
74 bpp = dst->format->BitsPerPixel;
|
|
|
75 format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13);
|
|
|
76
|
|
|
77 /* Calculate source and destination base coordinates */
|
|
|
78 dstX = rect->x;
|
|
|
79 dstY = rect->y;
|
|
|
80
|
|
|
81 /* Execute the fill command */
|
|
|
82 tdfx_wait(6);
|
|
|
83 tdfx_out32(DSTBASE, (Uint32)dst_base);
|
|
|
84 tdfx_out32(DSTFORMAT, format);
|
|
|
85 tdfx_out32(COLORFORE, color);
|
|
|
86 tdfx_out32(COMMAND_2D, COMMAND_2D_FILLRECT);
|
|
|
87 tdfx_out32(DSTSIZE, rect->w | (rect->h << 16));
|
|
|
88 tdfx_out32(LAUNCH_2D, dstX | (dstY << 16));
|
|
|
89 return(0);
|
|
|
90 }
|
|
|
91
|
|
|
92 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
|
|
|
93 SDL_Surface *dst, SDL_Rect *dstrect)
|
|
|
94 {
|
|
|
95 SDL_VideoDevice *this;
|
|
|
96 int bpp;
|
|
|
97 Uint32 src_format;
|
|
|
98 Uint32 dst_format;
|
|
|
99 char *src_base;
|
|
|
100 char *dst_base;
|
|
|
101 int srcX, srcY;
|
|
|
102 int dstX, dstY;
|
|
|
103 Uint32 blitop;
|
|
|
104 Uint32 use_colorkey;
|
|
|
105
|
|
|
106 /* Set the source and destination pixel format */
|
|
|
107 this = current_video;
|
|
|
108 src_base = (char *)((char *)src->pixels - mapped_mem);
|
|
|
109 bpp = src->format->BitsPerPixel;
|
|
|
110 src_format = src->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13);
|
|
|
111 dst_base = (char *)((char *)dst->pixels - mapped_mem);
|
|
|
112 bpp = dst->format->BitsPerPixel;
|
|
|
113 dst_format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13);
|
|
|
114
|
|
|
115 srcX = srcrect->x;
|
|
|
116 srcY = srcrect->y;
|
|
|
117 dstX = dstrect->x;
|
|
|
118 dstY = dstrect->y;
|
|
|
119
|
|
|
120 /* Assemble the blit operation */
|
|
|
121 blitop = COMMAND_2D_BITBLT | (0xCC << 24);
|
|
|
122 if ( srcX <= dstX ) {
|
|
|
123 blitop |= BIT(14);
|
|
|
124 srcX += (dstrect->w - 1);
|
|
|
125 dstX += (dstrect->w - 1);
|
|
|
126 }
|
|
|
127 if ( srcY <= dstY ) {
|
|
|
128 blitop |= BIT(15);
|
|
|
129 srcY += (dstrect->h - 1);
|
|
|
130 dstY += (dstrect->h - 1);
|
|
|
131 }
|
|
|
132
|
|
|
133 /* Perform the blit! */
|
|
|
134 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
|
|
|
135 tdfx_wait(3);
|
|
|
136 tdfx_out32(SRCCOLORKEYMIN, src->format->colorkey);
|
|
|
137 tdfx_out32(SRCCOLORKEYMAX, src->format->colorkey);
|
|
|
138 tdfx_out32(ROP_2D, 0xAA00);
|
|
|
139 use_colorkey = 1;
|
|
|
140 } else {
|
|
|
141 use_colorkey = 0;
|
|
|
142 }
|
|
|
143 tdfx_wait(9);
|
|
|
144 tdfx_out32(SRCBASE, (Uint32)src_base);
|
|
|
145 tdfx_out32(SRCFORMAT, src_format);
|
|
|
146 tdfx_out32(DSTBASE, (Uint32)dst_base);
|
|
|
147 tdfx_out32(DSTFORMAT, src_format);
|
|
|
148 tdfx_out32(COMMAND_2D, blitop);
|
|
|
149 tdfx_out32(COMMANDEXTRA_2D, use_colorkey);
|
|
|
150 tdfx_out32(DSTSIZE, dstrect->w | (dstrect->h << 16));
|
|
|
151 tdfx_out32(DSTXY, dstX | (dstY << 16));
|
|
|
152 tdfx_out32(LAUNCH_2D, srcX | (srcY << 16));
|
|
|
153
|
|
|
154 return(0);
|
|
|
155 }
|
|
|
156
|
|
|
157 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst)
|
|
|
158 {
|
|
|
159 int accelerated;
|
|
|
160
|
|
|
161 /* Set initial acceleration on */
|
|
|
162 src->flags |= SDL_HWACCEL;
|
|
|
163
|
|
|
164 /* Set the surface attributes */
|
|
|
165 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
|
|
|
166 if ( ! this->info.blit_hw_A ) {
|
|
|
167 src->flags &= ~SDL_HWACCEL;
|
|
|
168 }
|
|
|
169 }
|
|
|
170 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
|
|
|
171 if ( ! this->info.blit_hw_CC ) {
|
|
|
172 src->flags &= ~SDL_HWACCEL;
|
|
|
173 }
|
|
|
174 }
|
|
|
175
|
|
|
176 /* Check to see if final surface blit is accelerated */
|
|
|
177 accelerated = !!(src->flags & SDL_HWACCEL);
|
|
|
178 if ( accelerated ) {
|
|
|
179 src->map->hw_blit = HWAccelBlit;
|
|
|
180 }
|
|
|
181 return(accelerated);
|
|
|
182 }
|
|
|
183
|
|
|
184 void FB_3DfxAccel(_THIS, __u32 card)
|
|
|
185 {
|
|
|
186 /* We have hardware accelerated surface functions */
|
|
|
187 this->CheckHWBlit = CheckHWBlit;
|
|
|
188 this->LockHWSurface = LockHWSurface;
|
|
|
189 this->UnlockHWSurface = UnlockHWSurface;
|
|
|
190 wait_vbl = WaitVBL;
|
|
|
191
|
|
|
192 /* Reset the 3Dfx controller */
|
|
|
193 tdfx_out32(BRESERROR0, 0);
|
|
|
194 tdfx_out32(BRESERROR1, 0);
|
|
|
195
|
|
|
196 /* The 3Dfx has an accelerated color fill */
|
|
|
197 this->info.blit_fill = 1;
|
|
|
198 this->FillHWRect = FillHWRect;
|
|
|
199
|
|
|
200 /* The 3Dfx has accelerated normal and colorkey blits */
|
|
|
201 this->info.blit_hw = 1;
|
|
|
202 this->info.blit_hw_CC = 1;
|
|
|
203 this->SetHWColorKey = SetHWColorKey;
|
|
|
204 }
|
