swissChili | bb478f1 | 2020-08-07 20:45:07 -0700 | [diff] [blame] | 1 | #include "screen.h" |
| 2 | #include "cpu.h" |
| 3 | |
swissChili | 94ba1f5 | 2020-08-08 11:39:10 -0700 | [diff] [blame^] | 4 | #include <SDL2/SDL.h> |
| 5 | |
swissChili | bb478f1 | 2020-08-07 20:45:07 -0700 | [diff] [blame] | 6 | struct nk_color byte_to_color(uint8_t b) |
| 7 | { |
| 8 | struct nk_color c; |
swissChili | 94ba1f5 | 2020-08-08 11:39:10 -0700 | [diff] [blame^] | 9 | c.r = (b >> 5) * (255 / 0b111); |
swissChili | bb478f1 | 2020-08-07 20:45:07 -0700 | [diff] [blame] | 10 | c.g = ((b >> 2) & 0b111) * (255 / 0b111); |
| 11 | c.b = (b & 0b11) * (255 / 0b11); |
| 12 | c.a = 255; |
| 13 | return c; |
| 14 | } |
| 15 | |
| 16 | void screen(struct nk_context *ctx, uint8_t *mem, uint8_t size) |
| 17 | { |
| 18 | struct nk_command_buffer *out = nk_window_get_canvas(ctx); |
| 19 | |
| 20 | struct nk_rect bounds; |
| 21 | enum nk_widget_layout_states state = nk_widget(&bounds, ctx); |
| 22 | |
| 23 | if (!state) |
| 24 | return; |
| 25 | |
| 26 | //nk_fill_rect(out, bounds, 0, nk_rgb(255, 0, 0)); |
| 27 | |
| 28 | //return; |
| 29 | |
| 30 | for (int i = 0; i < CPU_FB_H; i++) |
| 31 | { |
| 32 | for (int j = 0; j < CPU_FB_W; j++) |
| 33 | { |
| 34 | nk_fill_rect(out, |
| 35 | nk_rect(bounds.x + i * size, bounds.y + j * size, |
| 36 | size, size), 0.0f, |
swissChili | 94ba1f5 | 2020-08-08 11:39:10 -0700 | [diff] [blame^] | 37 | byte_to_color(mem[i + CPU_FB_H * j])); |
swissChili | bb478f1 | 2020-08-07 20:45:07 -0700 | [diff] [blame] | 38 | } |
| 39 | } |
| 40 | } |
swissChili | 94ba1f5 | 2020-08-08 11:39:10 -0700 | [diff] [blame^] | 41 | |
| 42 | sdl_screen_t new_sdl_screen(uint8_t size) |
| 43 | { |
| 44 | sdl_screen_t scr; |
| 45 | scr.win = SDL_CreateWindow("6502", |
| 46 | SDL_WINDOWPOS_CENTERED, |
| 47 | SDL_WINDOWPOS_CENTERED, |
| 48 | size * 32, |
| 49 | size * 32, |
| 50 | 0); |
| 51 | scr.size = size; |
| 52 | scr.r = SDL_CreateRenderer(scr.win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC); |
| 53 | |
| 54 | return scr; |
| 55 | } |
| 56 | |
| 57 | void sdl_screen(sdl_screen_t *scr, uint8_t *mem) |
| 58 | { |
| 59 | SDL_RenderClear(scr->r); |
| 60 | |
| 61 | SDL_Event e; |
| 62 | |
| 63 | while (SDL_PollEvent(&e)) |
| 64 | { |
| 65 | switch (e.type) |
| 66 | { |
| 67 | case SDL_QUIT: |
| 68 | exit(0); |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | for (int i = 0; i < CPU_FB_H; i++) |
| 73 | { |
| 74 | for (int j = 0; j < CPU_FB_W; j++) |
| 75 | { |
| 76 | SDL_Rect r = |
| 77 | { |
| 78 | i * scr->size, |
| 79 | j * scr->size, |
| 80 | scr->size, |
| 81 | scr->size, |
| 82 | }; |
| 83 | |
| 84 | struct nk_color c = byte_to_color(mem[i + CPU_FB_H * j]); |
| 85 | |
| 86 | SDL_SetRenderDrawColor(scr->r, c.r, c.g, c.b, c.a); |
| 87 | SDL_RenderFillRect(scr->r, &r); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | SDL_RenderPresent(scr->r); |
| 92 | } |