Mercurial > sdl-ios-xcode

comparison src/video/nds/SDL_ndsrender.c @ 2670:6e4669f4db49 gsoc2008_nds

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix for the previous commit: actually 'svn add'ed some files.
author Darren Alton <dalton@stevens.edu>
date Tue, 10 Jun 2008 06:57:57 +0000
parents
children c3e7c0698cbb
comparison
equal deleted inserted replaced
2669:e27bdcc80744 2670:6e4669f4db49
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
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <nds.h>
26
27 #include "SDL_config.h"
28
29 #include "SDL_video.h"
30 #include "../SDL_sysvideo.h"
31 #include "../SDL_yuv_sw_c.h"
32 #include "../SDL_renderer_sw.h"
33
34
35 /* SDL surface based renderer implementation */
36
37 static SDL_Renderer *SDL_NDS_CreateRenderer(SDL_Window * window,
38 Uint32 flags);
39 static int SDL_NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g,
40 Uint8 b, Uint8 a, const SDL_Rect * rect);
41 static int SDL_NDS_RenderCopy(SDL_Renderer * renderer,
42 SDL_Texture * texture,
43 const SDL_Rect * srcrect,
44 const SDL_Rect * dstrect);
45 static void SDL_NDS_RenderPresent(SDL_Renderer * renderer);
46 static void SDL_NDS_DestroyRenderer(SDL_Renderer * renderer);
47
48
49 SDL_RenderDriver SDL_NDS_RenderDriver = {
50 SDL_NDS_CreateRenderer,
51 { "nds", SDL_RENDERER_PRESENTCOPY }
52 /* (SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
53 SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
54 SDL_RENDERER_PRESENTDISCARD),*/
55 };
56
57 typedef struct
58 {
59 int current_screen;
60 SDL_Surface *screens[3];
61 int ultimate_answer;
62 } SDL_NDS_RenderData;
63
64 SDL_Renderer *
65 SDL_NDS_CreateRenderer(SDL_Window * window, Uint32 flags)
66 {
67 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
68 SDL_DisplayMode *displayMode = &display->current_mode;
69 SDL_Renderer *renderer;
70 SDL_NDS_RenderData *data;
71 int i, n;
72 int bpp = 16;
73 Uint32 Rmask = 0x7C00, Gmask = 0x03E0, Bmask = 0x001F, Amask = 0x8000;
74
75 printf("SDL_NDS_CreateRenderer(window, 0x%x)\n", flags);
76 printf(" window: (%d,%d), %dx%d\n", window->x, window->y, window->w, window->h);
77
78 /* hard coded this to ARGB1555 for now
79 if (!SDL_PixelFormatEnumToMasks
80 (displayMode->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
81 SDL_SetError("Unknown display format");
82 return NULL;
83 }*/
84
85 renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
86 if (!renderer) {
87 SDL_OutOfMemory();
88 return NULL;
89 }
90
91 data = (SDL_NDS_RenderData *) SDL_malloc(sizeof(*data));
92 if (!data) {
93 SDL_NDS_DestroyRenderer(renderer);
94 SDL_OutOfMemory();
95 return NULL;
96 }
97 SDL_zerop(data);
98
99 renderer->RenderFill = SDL_NDS_RenderFill;
100 renderer->RenderCopy = SDL_NDS_RenderCopy;
101 renderer->RenderPresent = SDL_NDS_RenderPresent;
102 renderer->DestroyRenderer = SDL_NDS_DestroyRenderer;
103 renderer->info.name = SDL_NDS_RenderDriver.info.name;
104 renderer->info.flags = 0;
105 renderer->window = window->id;
106 renderer->driverdata = data;
107 Setup_SoftwareRenderer(renderer);
108
109 if (flags & SDL_RENDERER_PRESENTFLIP2) {
110 renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
111 n = 2;
112 } else if (flags & SDL_RENDERER_PRESENTFLIP3) {
113 renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
114 n = 3;
115 } else {
116 renderer->info.flags |= SDL_RENDERER_PRESENTCOPY;
117 n = 1;
118 }
119 for (i = 0; i < n; ++i) {
120 data->screens[i] =
121 SDL_CreateRGBSurface(0, 256, 192, bpp, Rmask, Gmask, Bmask, Amask);
122 if (!data->screens[i]) {
123 SDL_NDS_DestroyRenderer(renderer);
124 return NULL;
125 }
126 SDL_SetSurfacePalette(data->screens[i], display->palette);
127 }
128
129 data->current_screen = 0;
130 data->ultimate_answer = 42;
131 #if 0
132 #define blarg (data->screens[0])
133 printf("hello?\n");
134 if(!data || !(data->screens) || !blarg) {
135 printf("they're null.\n");
136 } else {
137 printf("not null.\n");
138 printf("%d\n%d\n%d\n%d\n%x\n%x\n%x\n%x\n",
139 blarg->w, blarg->h, blarg->pitch,
140 blarg->format->BitsPerPixel,
141 blarg->format->Rmask,
142 blarg->format->Gmask,
143 blarg->format->Bmask,
144 (u32)(blarg->pixels)); /* ARGH WHY DOESN'T THIS PRINT AT ALL? */
145 printf("hurr\n");
146 }
147 #undef blarg
148 #endif
149 return renderer;
150 }
151
152 static int
153 SDL_NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b,
154 Uint8 a, const SDL_Rect * rect)
155 {
156 SDL_NDS_RenderData *data = (SDL_NDS_RenderData *) renderer->driverdata;
157 SDL_Surface *target = data->screens[data->current_screen];
158 Uint32 color;
159 SDL_Rect real_rect = *rect;
160
161 color = SDL_MapRGBA(target->format, r, g, b, a);
162
163 return SDL_FillRect(target, &real_rect, color);
164 }
165
166 /* this is mainly for testing stuff to put a surface where I can see it */
167 void sdlds_surf2vram(SDL_Surface *s) {
168 int i;
169 for(i = 0; i < 256*192; ++i) {
170 ((u16*)VRAM_A)[i] = ((u16*)(s->pixels))[i];
171 }
172 }
173
174 static int
175 SDL_NDS_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
176 const SDL_Rect * srcrect, const SDL_Rect * dstrect)
177 {
178 SDL_NDS_RenderData *data =
179 (SDL_NDS_RenderData *) renderer->driverdata;
180 SDL_Window *window = SDL_GetWindowFromID(renderer->window);
181 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
182 printf("SDL_NDS_RenderCopy(renderer, texture, srcrect, dstrect)\n");
183 printf(" renderer: %s\n", renderer->info.name);
184 printf(" texture: %dx%d\n", texture->w, texture->h);
185 printf(" srcrect: (%d,%d), %dx%d\n", srcrect->x, srcrect->y, srcrect->w, srcrect->h);
186 printf(" dstrect: (%d,%d), %dx%d\n", dstrect->x, dstrect->y, dstrect->w, dstrect->h);
187
188 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
189 SDL_Surface *target = data->screens[data->current_screen];
190 void *pixels =
191 (Uint8 *) target->pixels + dstrect->y * target->pitch +
192 dstrect->x * target->format->BytesPerPixel;
193 return SDL_SW_CopyYUVToRGB((SDL_SW_YUVTexture *) texture->driverdata,
194 srcrect, display->current_mode.format,
195 dstrect->w, dstrect->h, pixels,
196 target->pitch);
197 } else {
198 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
199 SDL_Surface *target = data->screens[data->current_screen];
200 SDL_Rect real_srcrect = *srcrect;
201 SDL_Rect real_dstrect = *dstrect;
202 printf("Rmask %x Gmask %x Bmask %x Amask %x\n"
203 "width %d, height %d, pitch %d\nbpp %d, pixels %x\n",
204 surface->format->Rmask, surface->format->Gmask,
205 surface->format->Bmask, surface->format->Amask,
206 surface->w, surface->h, surface->pitch,
207 surface->format->BitsPerPixel, (u32)(surface->pixels));
208 sdlds_surf2vram(surface);
209 return SDL_LowerBlit(surface, &real_srcrect, target, &real_dstrect);
210 }
211 #if 0
212 /* previous attempt to copy it directly to vram */
213 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
214 int sx = srcrect->x, sy = srcrect->y, sw = srcrect->w, sh = srcrect->h;
215 int dx = dstrect->x, dy = dstrect->y, dw = dstrect->w, dh = dstrect->h;
216 int si,sj, di,dj;
217 /*printf("DEBUG: still alive!\n");*/
218 for(sj=0, dj=0; sj<sh && dj<dh; ++sj, ++dj) {
219 for(si=0, di=0; si<sw && di<dw; ++si, ++di) {
220 ((uint16*)VRAM_A)[(dj+dy)*256 + di+dx]
221 = ((Uint16*)surface->pixels)[(sj+sy)*(surface->w) + si+sx];
222 }
223 }
224 /*printf("DEBUG: still alive!\n");*/
225 }
226 return 0;
227 #endif
228 }
229
230 static void
231 SDL_NDS_RenderPresent(SDL_Renderer * renderer)
232 {
233 SDL_NDS_RenderData *data =
234 (SDL_NDS_RenderData *) renderer->driverdata;
235
236 printf("SDL_NDS_RenderPresent(renderer)\n");
237 printf(" renderer: %s\n", renderer->info.name);
238 /* Send the data to the display */
239
240 #if 0
241 /*testing to see if rectangles drawn get copied right*/
242 {
243 SDL_Rect ra;
244 ra.x=0; ra.y=0; ra.w=256; ra.h=192;
245 SDL_FillRect(data->screens[data->current_screen], &ra, 0x250);
246 ra.x=32; ra.y=32; ra.w=192; ra.h=128;
247 SDL_FillRect(data->screens[data->current_screen], &ra,
248 SDL_MapRGBA(data->screens[data->current_screen]->format,
249 255,255,255,255));
250 }
251 /*okay so this works but why not when I do it in the main()?
252 for some reason the screen I get from screen=SDL_SetVideoMode(...)
253 doesn't get copied to renderer->driverdata? */
254 for(i = 0; i < 30; ++i) swiWaitForVBlank(); /* delay for debug purpose */
255 #endif
256 sdlds_surf2vram(data->screens[data->current_screen]);
257
258 /* Update the flipping chain, if any */
259 if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
260 data->current_screen = (data->current_screen + 1) % 2;
261 } else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP3) {
262 data->current_screen = (data->current_screen + 1) % 3;
263 }
264 }
265
266 static void
267 SDL_NDS_DestroyRenderer(SDL_Renderer * renderer)
268 {
269 SDL_NDS_RenderData *data = (SDL_NDS_RenderData *) renderer->driverdata;
270 int i;
271
272 printf("SDL_NDS_DestroyRenderer(renderer)\n");
273 printf(" renderer: %s\n", renderer->info.name);
274 if (data) {
275 for (i = 0; i < SDL_arraysize(data->screens); ++i) {
276 if (data->screens[i]) {
277 SDL_FreeSurface(data->screens[i]);
278 }
279 }
280 SDL_free(data);
281 }
282 SDL_free(renderer);
283 }
284
285 /* vi: set ts=4 sw=4 expandtab: */