swissChili | dbbd540 | 2020-08-07 15:07:39 -0700 | [diff] [blame] | 1 | #include "gui.h" |
| 2 | |
| 3 | #include <GL/glew.h> |
| 4 | #include <SDL2/SDL.h> |
| 5 | #include <SDL2/SDL_opengl.h> |
| 6 | |
| 7 | #define NK_INCLUDE_FIXED_TYPES |
| 8 | #define NK_INCLUDE_STANDARD_IO |
| 9 | #define NK_INCLUDE_STANDARD_VARARGS |
| 10 | #define NK_INCLUDE_DEFAULT_ALLOCATOR |
| 11 | #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT |
| 12 | #define NK_INCLUDE_FONT_BAKING |
| 13 | #define NK_INCLUDE_DEFAULT_FONT |
| 14 | #define NK_IMPLEMENTATION |
| 15 | #define NK_SDL_GL3_IMPLEMENTATION |
| 16 | #include "nuklear/nuklear.h" |
| 17 | #include "nuklear/demo/sdl_opengl3/nuklear_sdl_gl3.h" |
| 18 | |
| 19 | #define WINDOW_WIDTH 720 |
| 20 | #define WINDOW_HEIGHT 640 |
| 21 | #define MAX_VERTEX_MEMORY 512 * 1024 |
| 22 | #define MAX_ELEMENT_MEMORY 128 * 1024 |
| 23 | |
| 24 | void gui(cpu_t *cpu) |
| 25 | { |
| 26 | SDL_Window *win; |
| 27 | SDL_GLContext glContext; |
| 28 | int win_width, win_height; |
| 29 | bool running = true; |
| 30 | bool cpu_running = false; |
| 31 | |
| 32 | struct nk_context *ctx; |
swissChili | c51e922 | 2020-08-07 16:09:14 -0700 | [diff] [blame^] | 33 | struct nk_colorf bg = |
| 34 | { |
| 35 | .r = 0.29f, |
| 36 | .g = 0.28f, |
| 37 | .b = 0.50f, |
| 38 | .a = 1.0f, |
| 39 | }; |
| 40 | struct nk_color selected = |
| 41 | { |
| 42 | .r = 28, |
| 43 | .g = 234, |
| 44 | .b = 79, |
| 45 | .a = 255, |
| 46 | }; |
| 47 | |
| 48 | uint16_t disas_start = 0, |
| 49 | disas_end = 32; |
swissChili | dbbd540 | 2020-08-07 15:07:39 -0700 | [diff] [blame] | 50 | |
| 51 | SDL_SetHint(SDL_HINT_VIDEO_HIGHDPI_DISABLED, "0"); |
| 52 | SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_EVENTS); |
| 53 | SDL_GL_SetAttribute (SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG); |
| 54 | SDL_GL_SetAttribute (SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE); |
| 55 | SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); |
| 56 | SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3); |
| 57 | SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); |
| 58 | win = SDL_CreateWindow("6502", |
| 59 | SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, |
| 60 | WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN|SDL_WINDOW_ALLOW_HIGHDPI); |
| 61 | glContext = SDL_GL_CreateContext(win); |
| 62 | SDL_GetWindowSize(win, &win_width, &win_height); |
| 63 | |
| 64 | /* OpenGL setup */ |
| 65 | glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT); |
| 66 | glewExperimental = 1; |
| 67 | if (glewInit() != GLEW_OK) { |
| 68 | fprintf(stderr, "Failed to setup GLEW\n"); |
| 69 | exit(1); |
| 70 | } |
| 71 | |
| 72 | ctx = nk_sdl_init(win); |
| 73 | |
| 74 | struct nk_font_atlas *atlas; |
| 75 | nk_sdl_font_stash_begin(&atlas); |
| 76 | struct nk_font *font = nk_font_atlas_add_default(atlas, 16, NULL); |
| 77 | nk_sdl_font_stash_end(); |
| 78 | //nk_style_load_all_cursors(ctx, atlas->cursors); |
| 79 | nk_style_set_font(ctx, &font->handle); |
| 80 | |
swissChili | dbbd540 | 2020-08-07 15:07:39 -0700 | [diff] [blame] | 81 | while (running) |
| 82 | { |
| 83 | SDL_Event evt; |
| 84 | nk_input_begin(ctx); |
| 85 | while (SDL_PollEvent(&evt)) |
| 86 | { |
| 87 | if (evt.type == SDL_QUIT) goto cleanup; |
| 88 | nk_sdl_handle_event(&evt); |
| 89 | } |
| 90 | nk_input_end(ctx); |
| 91 | |
| 92 | if (cpu_running && cpu->running) |
| 93 | step(cpu); |
| 94 | |
| 95 | if (!cpu->running) |
| 96 | cpu_running = false; |
| 97 | |
| 98 | if (nk_begin(ctx, "Registers", nk_rect(50, 300, 400, 90), |
| 99 | NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| |
| 100 | NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) |
| 101 | { |
| 102 | nk_layout_row_dynamic(ctx, 30, 4); |
swissChili | dbbd540 | 2020-08-07 15:07:39 -0700 | [diff] [blame] | 103 | cpu->pc = nk_propertyi(ctx, "PC", 0, cpu->pc, 0xFFFF, 1, 20.0f); |
| 104 | cpu->regs[A] = nk_propertyi(ctx, "A", 0, cpu->regs[A], 0xFF, 1, 20.0f); |
| 105 | cpu->regs[X] = nk_propertyi(ctx, "X", 0, cpu->regs[X], 0xFF, 1, 20.0f); |
| 106 | cpu->regs[Y] = nk_propertyi(ctx, "Y", 0, cpu->regs[Y], 0xFF, 1, 20.0f); |
| 107 | } |
| 108 | nk_end(ctx); |
| 109 | |
swissChili | c51e922 | 2020-08-07 16:09:14 -0700 | [diff] [blame^] | 110 | if (nk_begin(ctx, "Disassembler", nk_rect(330, 50, 250, 200), |
| 111 | NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| |
| 112 | NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) |
| 113 | { |
| 114 | nk_layout_row_dynamic(ctx, 30, 2); |
| 115 | disas_start = nk_propertyi(ctx, "Start", 0, disas_start, 0xFFFF, 1, 20.0f); |
| 116 | disas_end = nk_propertyi(ctx, "End", 0, disas_end, 0xFFFF, 1, 20.0f); |
| 117 | |
| 118 | uint16_t pc = cpu->pc; |
| 119 | |
| 120 | for (cpu->pc = disas_start; cpu->pc < disas_end;) |
| 121 | { |
| 122 | nk_layout_row_begin(ctx, NK_STATIC, 24, 2); |
| 123 | |
| 124 | uint16_t this_pc = cpu->pc; |
| 125 | |
| 126 | char addr[6]; |
| 127 | sprintf(addr, "$%x", this_pc); |
| 128 | |
| 129 | nk_layout_row_push(ctx, 48); |
| 130 | nk_label(ctx, addr, NK_TEXT_LEFT); |
| 131 | |
| 132 | nk_layout_row_push(ctx, 120); |
| 133 | char *line = disas_step(cpu); |
| 134 | if (pc == this_pc) |
| 135 | { |
| 136 | nk_label_colored(ctx, line, NK_TEXT_LEFT, selected); |
| 137 | } |
| 138 | else |
| 139 | { |
| 140 | nk_label(ctx, line, NK_TEXT_LEFT); |
| 141 | } |
| 142 | free(line); |
| 143 | } |
| 144 | |
| 145 | cpu->pc = pc; |
| 146 | } |
| 147 | nk_end(ctx); |
| 148 | |
swissChili | dbbd540 | 2020-08-07 15:07:39 -0700 | [diff] [blame] | 149 | if (nk_begin(ctx, "Debugger", nk_rect(50, 50, 230, 150), |
| 150 | NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| |
| 151 | NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) |
| 152 | { |
| 153 | nk_layout_row_dynamic(ctx, 30, 2); |
| 154 | nk_label(ctx, cpu->running ? "CPU Running" : "CPU Halted", NK_TEXT_LEFT); |
| 155 | if (nk_button_label(ctx, "Reset")) |
| 156 | { |
| 157 | puts("cpu reset"); |
| 158 | reset(cpu); |
| 159 | } |
| 160 | |
| 161 | nk_layout_row_dynamic(ctx, 30, 2); |
| 162 | if (nk_button_label(ctx, "Step")) |
| 163 | { |
| 164 | printf("step pressed!\n"); |
| 165 | step(cpu); |
| 166 | } |
| 167 | |
| 168 | if (nk_button_label(ctx, cpu_running ? "Stop" : "Run")) |
| 169 | { |
| 170 | cpu_running = !cpu_running; |
| 171 | puts(cpu_running ? "cpu running" : "cpu stopped"); |
| 172 | } |
| 173 | } |
| 174 | nk_end(ctx); |
| 175 | |
| 176 | SDL_GetWindowSize(win, &win_width, &win_height); |
| 177 | glViewport(0, 0, win_width, win_height); |
| 178 | glClear(GL_COLOR_BUFFER_BIT); |
| 179 | glClearColor(bg.r, bg.g, bg.b, bg.a); |
| 180 | nk_sdl_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_MEMORY, MAX_ELEMENT_MEMORY); |
| 181 | SDL_GL_SwapWindow(win); |
| 182 | } |
| 183 | |
| 184 | cleanup: |
| 185 | nk_sdl_shutdown(); |
| 186 | SDL_GL_DeleteContext(glContext); |
| 187 | SDL_DestroyWindow(win); |
| 188 | SDL_Quit(); |
| 189 | } |