10 #define RTG_INIT_ERR(a) { printf(a); *data->running = 0; }
12 uint8_t busy = 0, rtg_on = 0, rtg_initialized = 0;
13 extern uint8_t *rtg_mem;
14 extern uint32_t framebuffer_addr;
16 extern uint16_t rtg_display_width, rtg_display_height;
17 extern uint16_t rtg_display_format;
18 extern uint16_t rtg_pitch, rtg_total_rows;
19 extern uint16_t rtg_offset_x, rtg_offset_y;
21 static pthread_t thread_id;
23 struct rtg_shared_data {
24 uint16_t *width, *height;
25 uint16_t *format, *pitch;
26 uint16_t *offset_x, *offset_y;
32 SDL_Window *win = NULL;
33 SDL_Renderer *renderer = NULL;
34 SDL_Texture *img = NULL;
36 struct rtg_shared_data rtg_share_data;
37 static uint32_t palette[256];
39 void rtg_update_screen() {}
41 uint32_t rtg_to_sdl2[RTGFMT_NUM] = {
42 SDL_PIXELFORMAT_ARGB8888,
43 SDL_PIXELFORMAT_RGB565,
44 SDL_PIXELFORMAT_ARGB8888,
45 SDL_PIXELFORMAT_RGB555,
48 void *rtgThread(void *args) {
50 printf("RTG thread running\n");
56 uint32_t *indexed_buf;
58 rtg_share_data.format = &rtg_display_format;
59 rtg_share_data.width = &rtg_display_width;
60 rtg_share_data.height = &rtg_display_height;
61 rtg_share_data.pitch = &rtg_pitch;
62 rtg_share_data.offset_x = &rtg_offset_x;
63 rtg_share_data.offset_y = &rtg_offset_y;
64 rtg_share_data.memory = rtg_mem;
65 rtg_share_data.running = &rtg_on;
66 rtg_share_data.addr = &framebuffer_addr;
67 struct rtg_shared_data *data = &rtg_share_data;
69 uint16_t width = rtg_display_width;
70 uint16_t height = rtg_display_height;
71 uint16_t format = rtg_display_format;
72 uint16_t pitch = rtg_pitch;
74 printf("Initializing SDL2...\n");
75 if (SDL_Init(0) < 0) {
76 printf("Failed to initialize SDL2.\n");
79 printf("Initializing SDL2 Video...\n");
80 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
81 printf("Failed to initialize SDL2 Video..\n");
86 printf("Reinitializing SDL2...\n");
87 width = rtg_display_width;
88 height = rtg_display_height;
89 format = rtg_display_format;
98 printf("Creating %dx%d SDL2 window...\n", width, height);
99 win = SDL_CreateWindow("Pistorm RTG", 0, 0, width, height, 0);
101 RTG_INIT_ERR("Failed create SDL2 window.\n");
104 printf("Created %dx%d window.\n", width, height);
107 printf("Creating SDL2 renderer...\n");
108 renderer = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED);
110 RTG_INIT_ERR("Failed create SDL2 renderer.\n");
113 printf("Created SDL2 renderer.\n");
116 printf("Creating SDL2 texture...\n");
117 img = SDL_CreateTexture(renderer, rtg_to_sdl2[format], SDL_TEXTUREACCESS_TARGET, width, height);
119 RTG_INIT_ERR("Failed create SDL2 texture.\n");
122 printf("Created %dx%d texture.\n", width, height);
127 indexed_buf = calloc(1, width * height * 4);
131 indexed_buf = calloc(1, width * height * 2);
138 if (renderer && win && img) {
139 SDL_RenderClear(renderer);
140 if (*data->running) {
141 if (format == RTGFMT_RGB32)
142 SDL_UpdateTexture(img, NULL, &data->memory[*data->addr], pitch);
144 SDL_UpdateTexture(img, NULL, (uint8_t *)indexed_buf, pitch);
145 SDL_RenderCopy(renderer, img, NULL, NULL);
147 SDL_RenderPresent(renderer);
148 usleep(16667); //ghetto 60hz
149 if (height != *data->height || width != *data->width || format != *data->format) {
150 printf("Reinitializing due to something change.\n");
156 for (int y = 0; y < height; y++) {
157 for (int x = 0; x < width; x++) {
158 indexed_buf[x + (y * width)] = palette[data->memory[*data->addr + x + (y * width)]];
163 for (int y = 0; y < height; y++) {
164 for (int x = 0; x < width; x++) {
165 ((uint16_t *)indexed_buf)[x + (y * width)] = be16toh(((uint16_t *)data->memory)[*data->addr + x + (y * width)]);
176 printf("RTG thread shut down.\n");
179 if (img) SDL_DestroyTexture(img);
180 if (renderer) SDL_DestroyRenderer(renderer);
181 if (win) SDL_DestroyWindow(win);
190 SDL_QuitSubSystem(SDL_INIT_VIDEO);
196 void rtg_set_clut_entry(uint8_t index, uint32_t xrgb) {
197 palette[index] = xrgb;
200 void rtg_init_display() {
204 if (!rtg_initialized) {
205 err = pthread_create(&thread_id, NULL, &rtgThread, (void *)&rtg_share_data);
208 printf("can't create RTG thread :[%s]", strerror(err));
212 printf("RTG Thread created successfully\n");
215 printf("RTG display enabled.\n");
218 void rtg_shutdown_display() {
219 printf("RTG display disabled.\n");