src/platform/3ds/main.c (view raw)
1/* Copyright (c) 2013-2015 Jeffrey Pfau
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7#include "gba/renderers/video-software.h"
8#include "gba/supervisor/context.h"
9#include "gba/video.h"
10#include "util/memory.h"
11
12#include "3ds-vfs.h"
13
14#include <3ds.h>
15#include <sf2d.h>
16
17FS_archive sdmcArchive;
18
19static void GBA3DSLog(struct GBAThread* thread, enum GBALogLevel level, const char* format, va_list args);
20static Handle logFile;
21
22static void _drawStart(void) {
23 sf2d_start_frame(GFX_BOTTOM, GFX_LEFT);
24}
25static void _drawEnd(void) {
26 sf2d_end_frame();
27 sf2d_swapbuffers();
28}
29
30int main() {
31 struct GBAContext context;
32 srvInit();
33 aptInit();
34 hidInit(0);
35 fsInit();
36
37 sf2d_init();
38 sf2d_set_clear_color(0);
39 sf2d_texture* tex = sf2d_create_texture(256, 256, TEXFMT_RGB565, SF2D_PLACE_RAM);
40
41 sdmcArchive = (FS_archive) {
42 ARCH_SDMC,
43 (FS_path) { PATH_EMPTY, 1, (const u8*)"" },
44 0, 0
45 };
46 FSUSER_OpenArchive(0, &sdmcArchive);
47 FSUSER_OpenFile(0, &logFile, sdmcArchive, FS_makePath(PATH_CHAR, "/mgba.log"), FS_OPEN_WRITE | FS_OPEN_CREATE, FS_ATTRIBUTE_NONE);
48
49 GBAContextInit(&context, 0);
50 struct GBAOptions opts = {
51 .useBios = true,
52 .logLevel = 0,
53 .idleOptimization = IDLE_LOOP_REMOVE
54 };
55 GBAConfigLoadDefaults(&context.config, &opts);
56 context.gba->logHandler = GBA3DSLog;
57
58 struct GBAVideoSoftwareRenderer renderer;
59 GBAVideoSoftwareRendererCreate(&renderer);
60 renderer.outputBuffer = anonymousMemoryMap(256 * VIDEO_VERTICAL_PIXELS * 2);
61 renderer.outputBufferStride = 256;
62 GBAVideoAssociateRenderer(&context.gba->video, &renderer.d);
63
64 GBAContextLoadROM(&context, "/rom.gba", true);
65 GBAContextStart(&context);
66
67 while (aptMainLoop()) {
68 hidScanInput();
69 int activeKeys = hidKeysHeld() & 0x3FF;
70 if (hidKeysDown() & KEY_X) {
71 break;
72 }
73 GBAContextFrame(&context, activeKeys);
74 uint32_t* texdest = (uint32_t*) tex->data;
75 uint32_t* texsrc = (uint32_t*) renderer.outputBuffer;
76 int x, y;
77 for (y = 0; y < VIDEO_VERTICAL_PIXELS; y += 8) {
78 for (x = 0; x < 16; ++x) {
79 texdest[ 0 + x * 64 + y * 128] = texsrc[0 + x * 8 + (y + 0) * 128];
80 texdest[ 2 + x * 64 + y * 128] = texsrc[1 + x * 8 + (y + 0) * 128];
81 texdest[ 8 + x * 64 + y * 128] = texsrc[2 + x * 8 + (y + 0) * 128];
82 texdest[10 + x * 64 + y * 128] = texsrc[3 + x * 8 + (y + 0) * 128];
83 texdest[32 + x * 64 + y * 128] = texsrc[4 + x * 8 + (y + 0) * 128];
84 texdest[34 + x * 64 + y * 128] = texsrc[5 + x * 8 + (y + 0) * 128];
85 texdest[40 + x * 64 + y * 128] = texsrc[6 + x * 8 + (y + 0) * 128];
86 texdest[42 + x * 64 + y * 128] = texsrc[7 + x * 8 + (y + 0) * 128];
87
88 texdest[ 1 + x * 64 + y * 128] = texsrc[0 + x * 8 + (y + 1) * 128];
89 texdest[ 3 + x * 64 + y * 128] = texsrc[1 + x * 8 + (y + 1) * 128];
90 texdest[ 9 + x * 64 + y * 128] = texsrc[2 + x * 8 + (y + 1) * 128];
91 texdest[11 + x * 64 + y * 128] = texsrc[3 + x * 8 + (y + 1) * 128];
92 texdest[33 + x * 64 + y * 128] = texsrc[4 + x * 8 + (y + 1) * 128];
93 texdest[35 + x * 64 + y * 128] = texsrc[5 + x * 8 + (y + 1) * 128];
94 texdest[41 + x * 64 + y * 128] = texsrc[6 + x * 8 + (y + 1) * 128];
95 texdest[43 + x * 64 + y * 128] = texsrc[7 + x * 8 + (y + 1) * 128];
96
97 texdest[ 4 + x * 64 + y * 128] = texsrc[0 + x * 8 + (y + 2) * 128];
98 texdest[ 6 + x * 64 + y * 128] = texsrc[1 + x * 8 + (y + 2) * 128];
99 texdest[12 + x * 64 + y * 128] = texsrc[2 + x * 8 + (y + 2) * 128];
100 texdest[14 + x * 64 + y * 128] = texsrc[3 + x * 8 + (y + 2) * 128];
101 texdest[36 + x * 64 + y * 128] = texsrc[4 + x * 8 + (y + 2) * 128];
102 texdest[38 + x * 64 + y * 128] = texsrc[5 + x * 8 + (y + 2) * 128];
103 texdest[44 + x * 64 + y * 128] = texsrc[6 + x * 8 + (y + 2) * 128];
104 texdest[46 + x * 64 + y * 128] = texsrc[7 + x * 8 + (y + 2) * 128];
105
106 texdest[ 5 + x * 64 + y * 128] = texsrc[0 + x * 8 + (y + 3) * 128];
107 texdest[ 7 + x * 64 + y * 128] = texsrc[1 + x * 8 + (y + 3) * 128];
108 texdest[13 + x * 64 + y * 128] = texsrc[2 + x * 8 + (y + 3) * 128];
109 texdest[15 + x * 64 + y * 128] = texsrc[3 + x * 8 + (y + 3) * 128];
110 texdest[37 + x * 64 + y * 128] = texsrc[4 + x * 8 + (y + 3) * 128];
111 texdest[39 + x * 64 + y * 128] = texsrc[5 + x * 8 + (y + 3) * 128];
112 texdest[45 + x * 64 + y * 128] = texsrc[6 + x * 8 + (y + 3) * 128];
113 texdest[47 + x * 64 + y * 128] = texsrc[7 + x * 8 + (y + 3) * 128];
114
115 texdest[16 + x * 64 + y * 128] = texsrc[0 + x * 8 + (y + 4) * 128];
116 texdest[18 + x * 64 + y * 128] = texsrc[1 + x * 8 + (y + 4) * 128];
117 texdest[24 + x * 64 + y * 128] = texsrc[2 + x * 8 + (y + 4) * 128];
118 texdest[26 + x * 64 + y * 128] = texsrc[3 + x * 8 + (y + 4) * 128];
119 texdest[48 + x * 64 + y * 128] = texsrc[4 + x * 8 + (y + 4) * 128];
120 texdest[50 + x * 64 + y * 128] = texsrc[5 + x * 8 + (y + 4) * 128];
121 texdest[56 + x * 64 + y * 128] = texsrc[6 + x * 8 + (y + 4) * 128];
122 texdest[58 + x * 64 + y * 128] = texsrc[7 + x * 8 + (y + 4) * 128];
123
124 texdest[17 + x * 64 + y * 128] = texsrc[0 + x * 8 + (y + 5) * 128];
125 texdest[19 + x * 64 + y * 128] = texsrc[1 + x * 8 + (y + 5) * 128];
126 texdest[25 + x * 64 + y * 128] = texsrc[2 + x * 8 + (y + 5) * 128];
127 texdest[27 + x * 64 + y * 128] = texsrc[3 + x * 8 + (y + 5) * 128];
128 texdest[49 + x * 64 + y * 128] = texsrc[4 + x * 8 + (y + 5) * 128];
129 texdest[51 + x * 64 + y * 128] = texsrc[5 + x * 8 + (y + 5) * 128];
130 texdest[57 + x * 64 + y * 128] = texsrc[6 + x * 8 + (y + 5) * 128];
131 texdest[59 + x * 64 + y * 128] = texsrc[7 + x * 8 + (y + 5) * 128];
132
133 texdest[20 + x * 64 + y * 128] = texsrc[0 + x * 8 + (y + 6) * 128];
134 texdest[22 + x * 64 + y * 128] = texsrc[1 + x * 8 + (y + 6) * 128];
135 texdest[28 + x * 64 + y * 128] = texsrc[2 + x * 8 + (y + 6) * 128];
136 texdest[30 + x * 64 + y * 128] = texsrc[3 + x * 8 + (y + 6) * 128];
137 texdest[52 + x * 64 + y * 128] = texsrc[4 + x * 8 + (y + 6) * 128];
138 texdest[54 + x * 64 + y * 128] = texsrc[5 + x * 8 + (y + 6) * 128];
139 texdest[60 + x * 64 + y * 128] = texsrc[6 + x * 8 + (y + 6) * 128];
140 texdest[62 + x * 64 + y * 128] = texsrc[7 + x * 8 + (y + 6) * 128];
141
142 texdest[21 + x * 64 + y * 128] = texsrc[0 + x * 8 + (y + 7) * 128];
143 texdest[23 + x * 64 + y * 128] = texsrc[1 + x * 8 + (y + 7) * 128];
144 texdest[29 + x * 64 + y * 128] = texsrc[2 + x * 8 + (y + 7) * 128];
145 texdest[31 + x * 64 + y * 128] = texsrc[3 + x * 8 + (y + 7) * 128];
146 texdest[53 + x * 64 + y * 128] = texsrc[4 + x * 8 + (y + 7) * 128];
147 texdest[55 + x * 64 + y * 128] = texsrc[5 + x * 8 + (y + 7) * 128];
148 texdest[61 + x * 64 + y * 128] = texsrc[6 + x * 8 + (y + 7) * 128];
149 texdest[63 + x * 64 + y * 128] = texsrc[7 + x * 8 + (y + 7) * 128];
150 }
151 }
152 _drawStart();
153 sf2d_draw_texture_scale(tex, 40, 300, 1, -1);
154 _drawEnd();
155 }
156
157 GBAContextStop(&context);
158 GBAContextDeinit(&context);
159
160cleanup:
161 mappedMemoryFree(renderer.outputBuffer, 0);
162
163 FSFILE_Close(logFile);
164
165 sf2d_free_texture(tex);
166 sf2d_fini();
167
168 fsExit();
169 gfxExit();
170 hidExit();
171 aptExit();
172 srvExit();
173 return 0;
174}
175
176static void GBA3DSLog(struct GBAThread* thread, enum GBALogLevel level, const char* format, va_list args) {
177 UNUSED(thread);
178 UNUSED(level);
179 char out[256];
180 u64 size;
181 u32 written;
182 size_t len = vsnprintf(out, sizeof(out), format, args);
183 if (len >= 256) {
184 len = 255;
185 }
186 out[len] = '\n';
187 FSFILE_GetSize(logFile, &size);
188 FSFILE_Write(logFile, &written, size, out, len + 1, FS_WRITE_FLUSH);
189}