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comparison src/video/nds/SDL_ndsvideo.c @ 2688:71c56e900f8b gsoc2008_nds

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Cleaning up the renderer code to hopefully squish any problems. Starting to incorporate sprites, as well
author Darren Alton <dalton@stevens.edu>
date Fri, 15 Aug 2008 10:17:07 +0000
parents f7594fc66bda
children ca01c20274c0
comparison
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2687:5166b19b6808 2688:71c56e900f8b
29 */ 29 */
30 30
31 #include <stdio.h> 31 #include <stdio.h>
32 #include <stdlib.h> 32 #include <stdlib.h>
33 #include <nds.h> 33 #include <nds.h>
34 #include <nds/arm9/sprite.h>
35 #include <nds/arm9/trig_lut.h>
36 #include <nds/arm9/video.h> 34 #include <nds/arm9/video.h>
37 35
38 #include "SDL_video.h" 36 #include "SDL_video.h"
39 #include "SDL_mouse.h" 37 #include "SDL_mouse.h"
40 #include "../SDL_sysvideo.h" 38 #include "../SDL_sysvideo.h"
49 47
50 /* Initialization/Query functions */ 48 /* Initialization/Query functions */
51 static int NDS_VideoInit(_THIS); 49 static int NDS_VideoInit(_THIS);
52 static int NDS_SetDisplayMode(_THIS, SDL_DisplayMode * mode); 50 static int NDS_SetDisplayMode(_THIS, SDL_DisplayMode * mode);
53 static void NDS_VideoQuit(_THIS); 51 static void NDS_VideoQuit(_THIS);
54
55 /* NDS sprite-related functions */
56
57 #define SPRITE_DMA_CHANNEL 3
58 #define SPRITE_ANGLE_MASK 0x01FF
59
60 void
61 NDS_OAM_Update(tOAM *oam)
62 {
63 DC_FlushAll();
64 dmaCopyHalfWords(SPRITE_DMA_CHANNEL, oam->spriteBuffer, OAM,
65 SPRITE_COUNT * sizeof(SpriteEntry));
66 }
67
68 void
69 NDS_OAM_RotateSprite(SpriteRotation *spriteRotation, u16 angle)
70 {
71 s16 s = SIN[angle & SPRITE_ANGLE_MASK] >> 4;
72 s16 c = COS[angle & SPRITE_ANGLE_MASK] >> 4;
73
74 spriteRotation->hdx = c;
75 spriteRotation->hdy = s;
76 spriteRotation->vdx = -s;
77 spriteRotation->vdy = c;
78 }
79
80 void
81 NDS_OAM_Init(tOAM *oam)
82 {
83 int i;
84 for(i = 0; i < SPRITE_COUNT; i++) {
85 oam->spriteBuffer[i].attribute[0] = ATTR0_DISABLED;
86 oam->spriteBuffer[i].attribute[1] = 0;
87 oam->spriteBuffer[i].attribute[2] = 0;
88 }
89 for(i = 0; i < MATRIX_COUNT; i++) {
90 NDS_OAM_RotateSprite(&(oam->matrixBuffer[i]), 0);
91 }
92 swiWaitForVBlank();
93 NDS_OAM_Update(oam);
94 }
95
96 void
97 NDS_OAM_HideSprite(SpriteEntry *spriteEntry)
98 {
99 spriteEntry->isRotoscale = 0;
100 spriteEntry->isHidden = 1;
101 }
102
103 void
104 NDS_OAM_ShowSprite(SpriteEntry *spriteEntry, int affine, int double_bound)
105 {
106 if (affine) {
107 spriteEntry->isRotoscale = 1;
108 spriteEntry->rsDouble = double_bound;
109 } else {
110 spriteEntry->isHidden = 0;
111 }
112 }
113 52
114 53
115 /* SDL NDS driver bootstrap functions */ 54 /* SDL NDS driver bootstrap functions */
116 static int 55 static int
117 NDS_Available(void) 56 NDS_Available(void)
167 NDS_VideoInit(_THIS) 106 NDS_VideoInit(_THIS)
168 { 107 {
169 SDL_DisplayMode mode; 108 SDL_DisplayMode mode;
170 int i; 109 int i;
171 110
172 printf("+NDS_VideoInit\n"); 111 printf("+NDS_VideoInit\n");
173 /* simple 256x192x16x60 for now */ 112 /* simple 256x192x16x60 for now */
174 mode.w = 256; 113 mode.w = 256;
175 mode.h = 192; 114 mode.h = 192;
176 mode.format = SDL_PIXELFORMAT_ABGR1555; 115 mode.format = SDL_PIXELFORMAT_ABGR1555;
177 mode.refresh_rate = 60; 116 mode.refresh_rate = 60;
188 /* hackish stuff to get things up and running for now, and for a console */ 127 /* hackish stuff to get things up and running for now, and for a console */
189 powerON(POWER_ALL_2D); 128 powerON(POWER_ALL_2D);
190 irqInit(); 129 irqInit();
191 irqEnable(IRQ_VBLANK); 130 irqEnable(IRQ_VBLANK);
192 NDS_SetDisplayMode(_this, &mode); 131 NDS_SetDisplayMode(_this, &mode);
193 printf("-NDS_VideoInit\n"); 132 printf("-NDS_VideoInit\n");
194 return 0; 133 return 0;
195 } 134 }
196 135
197 static int 136 static int
198 NDS_SetDisplayMode(_THIS, SDL_DisplayMode * mode) 137 NDS_SetDisplayMode(_THIS, SDL_DisplayMode * mode)
199 { 138 {
200 printf("+NDS_SetDisplayMode\n"); 139 printf("+NDS_SetDisplayMode\n");
201 /* right now this function is just hard-coded for 256x192 ABGR1555 */ 140 /* right now this function is just hard-coded for 256x192 ABGR1555 */
202 videoSetMode(MODE_5_2D | 141 videoSetMode(MODE_5_2D |
203 DISPLAY_BG2_ACTIVE | DISPLAY_BG3_ACTIVE | 142 DISPLAY_BG2_ACTIVE |
204 DISPLAY_SPR_1D_LAYOUT | DISPLAY_SPR_ACTIVE); /* display on main core */ 143 DISPLAY_BG3_ACTIVE |
205 videoSetModeSub(MODE_0_2D | DISPLAY_BG0_ACTIVE); /* debug text on sub */ 144 DISPLAY_BG_EXT_PALETTE |
206 vramSetMainBanks(VRAM_A_MAIN_BG_0x06000000, VRAM_B_MAIN_BG_0x06020000, 145 DISPLAY_SPR_1D_LAYOUT |
207 VRAM_C_SUB_BG_0x06200000, VRAM_D_MAIN_BG_0x06040000); 146 DISPLAY_SPR_ACTIVE |
147 DISPLAY_SPR_EXT_PALETTE); /* display on main core
148 with lots of flags set for
149 flexibility/capacity to render */
150
151 /* hopefully these cover all the various things we might need to do */
152 vramSetBankA(VRAM_A_MAIN_BG_0x06000000);
153 vramSetBankB(VRAM_B_MAIN_BG_0x06020000);
154 vramSetBankC(VRAM_C_SUB_BG_0x06200000);
155 vramSetBankD(VRAM_D_MAIN_BG_0x06040000); /* not a typo. vram d can't sub */
208 vramSetBankE(VRAM_E_MAIN_SPRITE); 156 vramSetBankE(VRAM_E_MAIN_SPRITE);
209 /* set up console for debug text 'n stuff */ 157 vramSetBankF(VRAM_F_OBJ_EXT_PALETTE);
210 SUB_BG0_CR = BG_MAP_BASE(31); 158 vramSetBankG(VRAM_G_BG_EXT_PALETTE);
211 BG_PALETTE_SUB[255] = RGB15(31, 31, 31); 159 vramSetBankH(VRAM_H_SUB_BG_EXT_PALETTE);
212 /* debugging purposes, uncomment this later. then remove it & add 2screen. 160 vramSetBankI(VRAM_I_SUB_SPRITE);
213 consoleInitDefault((u16 *) SCREEN_BASE_BLOCK_SUB(31), 161
214 (u16 *) CHAR_BASE_BLOCK_SUB(0), 16);*/ 162 videoSetModeSub(MODE_0_2D | DISPLAY_BG0_ACTIVE); /* debug text on sub
215 printf("-NDS_SetDisplayMode\n"); 163 TODO: this will change
164 when multi-head is
165 introduced in render */
166
167 printf("-NDS_SetDisplayMode\n");
216 return 0; 168 return 0;
217 } 169 }
218 170
219 void 171 void
220 NDS_VideoQuit(_THIS) 172 NDS_VideoQuit(_THIS)
221 { 173 {
222 printf("+NDS_VideoQuit\n"); 174 printf("+NDS_VideoQuit\n");
223 videoSetMode(DISPLAY_SCREEN_OFF); 175 videoSetMode(DISPLAY_SCREEN_OFF);
224 videoSetModeSub(DISPLAY_SCREEN_OFF); 176 videoSetModeSub(DISPLAY_SCREEN_OFF);
225 vramSetMainBanks(VRAM_A_LCD, VRAM_B_LCD, VRAM_C_LCD, VRAM_D_LCD); 177 vramSetMainBanks(VRAM_A_LCD, VRAM_B_LCD, VRAM_C_LCD, VRAM_D_LCD);
226 printf("-NDS_VideoQuit\n"); 178 vramSetBankE(VRAM_E_LCD);
179 vramSetBankF(VRAM_F_LCD);
180 vramSetBankG(VRAM_G_LCD);
181 vramSetBankH(VRAM_H_LCD);
182 vramSetBankI(VRAM_I_LCD);
183 printf("-NDS_VideoQuit\n");
227 } 184 }
228 185
229 /* vi: set ts=4 sw=4 expandtab: */ 186 /* vi: set ts=4 sw=4 expandtab: */