Use one texture with two channels for video

.gitignore

@@ -2,3 +2,4 @@
 /shrooms-vb.exe
 .vscode
 output
+/target

Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "shrooms-vb-native"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+anyhow = "1"
+clap = { version = "4", features = ["derive"] }
+imgui = "0.12"
+imgui-wgpu = { git = "https://github.com/Yatekii/imgui-wgpu-rs", rev = "2edd348" }
+imgui-winit-support = "0.13"
+pollster = "0.4"
+wgpu = "22.1"
+winit = "0.30"
+
+[build-dependencies]
+cc = "1"
+
+[profile.release]
+lto = "thin"

README.md

@@ -13,7 +13,3 @@ Run
 ```sh
 make build
 ```
-
-## Dependencies
-
-This program uses a vendored version of [nuklear](https://github.com/Immediate-Mode-UI/Nuklear/tree/6566d9075d5fed48af014c93f87c4aed8c4bd21c) for GUIs.

assets.h

@@ -9,9 +9,4 @@ const uint8_t *LEFT_EYE_DEFAULT = &_binary_assets_lefteye_bin_start;
 extern const uint8_t _binary_assets_righteye_bin_start;
 const uint8_t *RIGHT_EYE_DEFAULT = &_binary_assets_righteye_bin_start; 
 
-extern const uint8_t _binary_assets_selawk_bin_start;
-extern const uint8_t _binary_assets_selawk_bin_end;
-const uint8_t *SELAWIK = &_binary_assets_selawk_bin_start;
-#define SELAWIK_LEN (&_binary_assets_selawk_bin_end - &_binary_assets_selawk_bin_start)
-
 #endif

audio.c

@@ -37,10 +37,6 @@ int audioInit(AudioContext *aud) {
     return 0;
 }
 
-void audioDestroy(AudioContext *aud) {
-    SDL_CloseAudioDevice(aud->id);
-}
-
 int audioUpdate(AudioContext *aud, void *data, uint32_t bytes) {
     int filled;
     if (!aud->id) return -1;

audio.h

@@ -13,7 +13,6 @@ typedef struct {
 } AudioContext;
 
 int audioInit(AudioContext *aud);
-void audioDestroy(AudioContext *aud);
 int audioUpdate(AudioContext *aud, void *data, uint32_t bytes);
 
 #endif

build.rs

@@ -0,0 +1,12 @@
+use std::path::Path;
+
+fn main() {
+    println!("cargo::rerun-if-changed=shrooms-vb-core");
+    cc::Build::new()
+        .include(Path::new("shrooms-vb-core/core"))
+        .opt_level(2)
+        .flag_if_supported("-flto")
+        .flag_if_supported("-fno-strict-aliasing")
+        .file(Path::new("shrooms-vb-core/core/vb.c"))
+        .compile("vb");
+}

cli.c

@@ -2,15 +2,10 @@
 #include <stdio.h>
 
 int parseCLIArgs(int argc, char **argv, CLIArgs *args) {
-    int arg;
+    if (argc != 2) {
-
+        fprintf(stderr, "usage: %s /path/to/rom.vb\n", argv[0]);
-    args->filename = NULL;
+        return 1;
-    for (arg = 1; arg < argc; ++arg) {
-        if (args->filename) {
-            fprintf(stderr, "usage: %s /path/to/rom.vb\n", argv[0]);
-            return 1;
-        }
-        args->filename = argv[arg];
     }
+    args->filename = argv[1];
     return 0;
 }

emulation.c

@@ -1,75 +0,0 @@
-#include "emulation.h"
-#include <stdlib.h>
-
-static int onFrame(VB *sim) {
-    SimContext *ctx = vbGetUserData(sim);
-    ctx->hasFrame = true;
-    return 1;
-}
-
-int emuInit(EmulationContext *emu) {
-    emu->sim = malloc(vbSizeOf());
-    vbInit(emu->sim);
-
-    emu->ctx = malloc(sizeof(SimContext));
-    emu->ctx->hasFrame = false;
-    emu->ctx->currentSample = 0;
-    vbSetSamples(emu->sim, emu->ctx->samples[emu->ctx->currentSample], VB_S16, 834);
-    vbSetUserData(emu->sim, emu->ctx);
-    vbSetFrameCallback(emu->sim, &onFrame);
-
-    return 0;
-}
-
-void emuDestroy(EmulationContext *emu) {
-    uint8_t *rom = vbGetCartROM(emu->sim, NULL);
-    SimContext *ctx = vbGetUserData(emu->sim);
-
-    if (rom) free(rom);
-    if (ctx) free(ctx);
-    free(emu->sim);
-}
-
-void emuLoadGame(EmulationContext *emu, uint8_t *rom, uint32_t romSize) {
-    uint8_t *oldRom = vbGetCartROM(emu->sim, NULL);
-    if (oldRom) free(oldRom);
-    vbSetCartROM(emu->sim, rom, romSize);
-    vbReset(emu->sim);
-}
-
-void emuReset(EmulationContext *emu) {
-    vbReset(emu->sim);
-}
-
-bool emuIsGameLoaded(EmulationContext *emu) {
-    return vbGetCartROM(emu->sim, NULL) != NULL;
-}
-
-#define MAX_STEP_CLOCKS 20000000
-void emuTick(EmulationContext *emu) {
-    uint32_t clocks = MAX_STEP_CLOCKS;
-    vbEmulate(emu->sim, &clocks);
-}
-
-bool emuReadPixels(EmulationContext *emu, uint8_t *left, uint8_t *right) {
-    if (!emu->ctx->hasFrame) {
-        return false;
-    }
-    emu->ctx->hasFrame = false;
-    vbGetPixels(emu->sim, left, 1, 384, right, 1, 384);
-    return true;
-}
-
-void emuReadSamples(EmulationContext *emu, void **data, uint32_t *bytes) {
-    uint32_t samplePairs;
-
-    *data = vbGetSamples(emu->sim, NULL, NULL, &samplePairs);
-    *bytes = samplePairs * 4;
-    emu->ctx->currentSample += 1;
-    emu->ctx->currentSample %= 2;
-    vbSetSamples(emu->sim, emu->ctx->samples[emu->ctx->currentSample], VB_S16, 834);
-}
-
-void emuSetKeys(EmulationContext *emu, uint16_t keys) {
-    vbSetKeys(emu->sim, keys);
-}

emulation.h

@@ -1,30 +0,0 @@
-#ifndef SHROOMS_VB_NATIVE_EMULATION_
-#define SHROOMS_VB_NATIVE_EMULATION_
-
-#include "shrooms-vb-core/core/vb.h"
-#include <stdbool.h>
-#include <stdint.h>
-
-typedef struct SimContext {
-    bool hasFrame;
-    uint32_t samples[2][834];
-    uint32_t currentSample;
-} SimContext;
-
-typedef struct EmulationContext {
-    VB *sim;
-    SimContext *ctx;
-} EmulationContext;
-
-int emuInit(EmulationContext *emu);
-void emuDestroy(EmulationContext *emu);
-void emuLoadGame(EmulationContext *emu, uint8_t *rom, uint32_t romSize);
-void emuReset(EmulationContext *emu);
-bool emuIsGameLoaded(EmulationContext *emu);
-
-void emuTick(EmulationContext *emu);
-bool emuReadPixels(EmulationContext *emu, uint8_t *left, uint8_t *right);
-void emuReadSamples(EmulationContext *emu, void **data, uint32_t *bytes);
-void emuSetKeys(EmulationContext *emu, uint16_t keys);
-
-#endif

external/nuklear_sdl_renderer.h

@@ -1,393 +0,0 @@
-/*
- * Nuklear - 4.9.4 - public domain
- */
-/*
- * ==============================================================
- *
- *                              API
- *
- * ===============================================================
- */
-#ifndef NK_SDL_RENDERER_H_
-#define NK_SDL_RENDERER_H_
-
-#ifndef NK_SDL_RENDERER_SDL_H
-#define NK_SDL_RENDERER_SDL_H <SDL.h>
-#endif
-#include NK_SDL_RENDERER_SDL_H
-NK_API struct nk_context*   nk_sdl_init(SDL_Window *win, SDL_Renderer *renderer);
-NK_API void                 nk_sdl_font_stash_begin(struct nk_font_atlas **atlas);
-NK_API void                 nk_sdl_font_stash_end(void);
-NK_API int                  nk_sdl_handle_event(SDL_Event *evt);
-NK_API void                 nk_sdl_render(enum nk_anti_aliasing);
-NK_API void                 nk_sdl_shutdown(void);
-NK_API void                 nk_sdl_handle_grab(void);
-
-#if SDL_COMPILEDVERSION < SDL_VERSIONNUM(2, 0, 22)
-/* Metal API does not support cliprects with negative coordinates or large
- * dimensions. The issue is fixed in SDL2 with version 2.0.22 but until
- * that version is released, the NK_SDL_CLAMP_CLIP_RECT flag can be used to
- * ensure the cliprect is itself clipped to the viewport.
- * See discussion at https://discourse.libsdl.org/t/rendergeometryraw-producing-different-results-in-metal-vs-opengl/34953
- */
-#define NK_SDL_CLAMP_CLIP_RECT
-#endif
-
-#endif /* NK_SDL_RENDERER_H_ */
-
-/*
- * ==============================================================
- *
- *                          IMPLEMENTATION
- *
- * ===============================================================
- */
-#ifdef NK_SDL_RENDERER_IMPLEMENTATION
-#include <string.h>
-#include <stdlib.h>
-
-struct nk_sdl_device {
-    struct nk_buffer cmds;
-    struct nk_draw_null_texture tex_null;
-    SDL_Texture *font_tex;
-};
-
-struct nk_sdl_vertex {
-    float position[2];
-    float uv[2];
-    nk_byte col[4];
-};
-
-static struct nk_sdl {
-    SDL_Window *win;
-    SDL_Renderer *renderer;
-    struct nk_sdl_device ogl;
-    struct nk_context ctx;
-    struct nk_font_atlas atlas;
-    Uint64 time_of_last_frame;
-} sdl;
-
-NK_INTERN void
-nk_sdl_device_upload_atlas(const void *image, int width, int height)
-{
-    struct nk_sdl_device *dev = &sdl.ogl;
-
-    SDL_Texture *g_SDLFontTexture = SDL_CreateTexture(sdl.renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STATIC, width, height);
-    if (g_SDLFontTexture == NULL) {
-        SDL_Log("error creating texture");
-        return;
-    }
-    SDL_UpdateTexture(g_SDLFontTexture, NULL, image, 4 * width);
-    SDL_SetTextureBlendMode(g_SDLFontTexture, SDL_BLENDMODE_BLEND);
-    dev->font_tex = g_SDLFontTexture;
-}
-
-NK_API void
-nk_sdl_render(enum nk_anti_aliasing AA)
-{
-    /* setup global state */
-    struct nk_sdl_device *dev = &sdl.ogl;
-
-    {
-        SDL_Rect saved_clip;
-#ifdef NK_SDL_CLAMP_CLIP_RECT
-        SDL_Rect viewport;
-#endif
-        SDL_bool clipping_enabled;
-        int vs = sizeof(struct nk_sdl_vertex);
-        size_t vp = offsetof(struct nk_sdl_vertex, position);
-        size_t vt = offsetof(struct nk_sdl_vertex, uv);
-        size_t vc = offsetof(struct nk_sdl_vertex, col);
-
-        /* convert from command queue into draw list and draw to screen */
-        const struct nk_draw_command *cmd;
-        const nk_draw_index *offset = NULL;
-        struct nk_buffer vbuf, ebuf;
-
-        /* fill converting configuration */
-        struct nk_convert_config config;
-        static const struct nk_draw_vertex_layout_element vertex_layout[] = {
-            {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, position)},
-            {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, uv)},
-            {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_sdl_vertex, col)},
-            {NK_VERTEX_LAYOUT_END}
-        };
-
-        Uint64 now = SDL_GetTicks64();
-        sdl.ctx.delta_time_seconds = (float)(now - sdl.time_of_last_frame) / 1000;
-        sdl.time_of_last_frame = now;
-
-        NK_MEMSET(&config, 0, sizeof(config));
-        config.vertex_layout = vertex_layout;
-        config.vertex_size = sizeof(struct nk_sdl_vertex);
-        config.vertex_alignment = NK_ALIGNOF(struct nk_sdl_vertex);
-        config.tex_null = dev->tex_null;
-        config.circle_segment_count = 22;
-        config.curve_segment_count = 22;
-        config.arc_segment_count = 22;
-        config.global_alpha = 1.0f;
-        config.shape_AA = AA;
-        config.line_AA = AA;
-
-        /* convert shapes into vertexes */
-        nk_buffer_init_default(&vbuf);
-        nk_buffer_init_default(&ebuf);
-        nk_convert(&sdl.ctx, &dev->cmds, &vbuf, &ebuf, &config);
-
-        /* iterate over and execute each draw command */
-        offset = (const nk_draw_index*)nk_buffer_memory_const(&ebuf);
-
-        clipping_enabled = SDL_RenderIsClipEnabled(sdl.renderer);
-        SDL_RenderGetClipRect(sdl.renderer, &saved_clip);
-#ifdef NK_SDL_CLAMP_CLIP_RECT
-        SDL_RenderGetViewport(sdl.renderer, &viewport);
-#endif
-
-        nk_draw_foreach(cmd, &sdl.ctx, &dev->cmds)
-        {
-            if (!cmd->elem_count) continue;
-
-            {
-                SDL_Rect r;
-                r.x = cmd->clip_rect.x;
-                r.y = cmd->clip_rect.y;
-                r.w = cmd->clip_rect.w;
-                r.h = cmd->clip_rect.h;
-#ifdef NK_SDL_CLAMP_CLIP_RECT
-                if (r.x < 0) {
-                    r.w += r.x;
-                    r.x = 0;
-                }
-                if (r.y < 0) {
-                    r.h += r.y;
-                    r.y = 0;
-                }
-                if (r.h > viewport.h) {
-                    r.h = viewport.h;
-                }
-                if (r.w > viewport.w) {
-                    r.w = viewport.w;
-                }
-#endif
-                SDL_RenderSetClipRect(sdl.renderer, &r);
-            }
-
-            {
-                const void *vertices = nk_buffer_memory_const(&vbuf);
-
-                SDL_RenderGeometryRaw(sdl.renderer,
-                        (SDL_Texture *)cmd->texture.ptr,
-                        (const float*)((const nk_byte*)vertices + vp), vs,
-                        (const SDL_Color*)((const nk_byte*)vertices + vc), vs,
-                        (const float*)((const nk_byte*)vertices + vt), vs,
-                        (vbuf.needed / vs),
-                        (void *) offset, cmd->elem_count, 2);
-
-                offset += cmd->elem_count;
-            }
-        }
-
-        SDL_RenderSetClipRect(sdl.renderer, &saved_clip);
-        if (!clipping_enabled) {
-            SDL_RenderSetClipRect(sdl.renderer, NULL);
-        }
-
-        nk_clear(&sdl.ctx);
-        nk_buffer_clear(&dev->cmds);
-        nk_buffer_free(&vbuf);
-        nk_buffer_free(&ebuf);
-    }
-}
-
-static void
-nk_sdl_clipboard_paste(nk_handle usr, struct nk_text_edit *edit)
-{
-    const char *text = SDL_GetClipboardText();
-    if (text) nk_textedit_paste(edit, text, nk_strlen(text));
-    (void)usr;
-}
-
-static void
-nk_sdl_clipboard_copy(nk_handle usr, const char *text, int len)
-{
-    char *str = 0;
-    (void)usr;
-    if (!len) return;
-    str = (char*)malloc((size_t)len+1);
-    if (!str) return;
-    memcpy(str, text, (size_t)len);
-    str[len] = '\0';
-    SDL_SetClipboardText(str);
-    free(str);
-}
-
-NK_API struct nk_context*
-nk_sdl_init(SDL_Window *win, SDL_Renderer *renderer)
-{
-#ifndef NK_SDL_CLAMP_CLIP_RECT
-    SDL_RendererInfo info;
-    SDL_version runtimeVer;
-
-    /* warn for cases where NK_SDL_CLAMP_CLIP_RECT should have been set but isn't */
-    SDL_GetRendererInfo(renderer, &info);
-    SDL_GetVersion(&runtimeVer);
-    if (strncmp("metal", info.name, 5) == 0 &&
-        SDL_VERSIONNUM(runtimeVer.major, runtimeVer.minor, runtimeVer.patch) < SDL_VERSIONNUM(2, 0, 22))
-    {
-        SDL_LogWarn(
-            SDL_LOG_CATEGORY_APPLICATION,
-            "renderer is using Metal API but runtime SDL version %d.%d.%d is older than compiled version %d.%d.%d, "
-            "which may cause issues with rendering",
-            runtimeVer.major, runtimeVer.minor, runtimeVer.patch,
-            SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL
-        );
-    }
-#endif
-    sdl.win = win;
-    sdl.renderer = renderer;
-    sdl.time_of_last_frame = SDL_GetTicks64();
-    nk_init_default(&sdl.ctx, 0);
-    sdl.ctx.clip.copy = nk_sdl_clipboard_copy;
-    sdl.ctx.clip.paste = nk_sdl_clipboard_paste;
-    sdl.ctx.clip.userdata = nk_handle_ptr(0);
-    nk_buffer_init_default(&sdl.ogl.cmds);
-    return &sdl.ctx;
-}
-
-NK_API void
-nk_sdl_font_stash_begin(struct nk_font_atlas **atlas)
-{
-    nk_font_atlas_init_default(&sdl.atlas);
-    nk_font_atlas_begin(&sdl.atlas);
-    *atlas = &sdl.atlas;
-}
-
-NK_API void
-nk_sdl_font_stash_end(void)
-{
-    const void *image; int w, h;
-    image = nk_font_atlas_bake(&sdl.atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
-    nk_sdl_device_upload_atlas(image, w, h);
-    nk_font_atlas_end(&sdl.atlas, nk_handle_ptr(sdl.ogl.font_tex), &sdl.ogl.tex_null);
-    if (sdl.atlas.default_font)
-        nk_style_set_font(&sdl.ctx, &sdl.atlas.default_font->handle);
-}
-
-NK_API void
-nk_sdl_handle_grab(void)
-{
-    struct nk_context *ctx = &sdl.ctx;
-    if (ctx->input.mouse.grab) {
-        SDL_SetRelativeMouseMode(SDL_TRUE);
-    } else if (ctx->input.mouse.ungrab) {
-        /* better support for older SDL by setting mode first; causes an extra mouse motion event */
-        SDL_SetRelativeMouseMode(SDL_FALSE);
-        SDL_WarpMouseInWindow(sdl.win, (int)ctx->input.mouse.prev.x, (int)ctx->input.mouse.prev.y);
-    } else if (ctx->input.mouse.grabbed) {
-        ctx->input.mouse.pos.x = ctx->input.mouse.prev.x;
-        ctx->input.mouse.pos.y = ctx->input.mouse.prev.y;
-    }
-}
-
-NK_API int
-nk_sdl_handle_event(SDL_Event *evt)
-{
-    struct nk_context *ctx = &sdl.ctx;
-
-    switch(evt->type)
-    {
-        case SDL_KEYUP: /* KEYUP & KEYDOWN share same routine */
-        case SDL_KEYDOWN:
-            {
-                int down = evt->type == SDL_KEYDOWN;
-                const Uint8* state = SDL_GetKeyboardState(0);
-                switch(evt->key.keysym.sym)
-                {
-                    case SDLK_RSHIFT: /* RSHIFT & LSHIFT share same routine */
-                    case SDLK_LSHIFT:    nk_input_key(ctx, NK_KEY_SHIFT, down); break;
-                    case SDLK_DELETE:    nk_input_key(ctx, NK_KEY_DEL, down); break;
-                    case SDLK_RETURN:    nk_input_key(ctx, NK_KEY_ENTER, down); break;
-                    case SDLK_TAB:       nk_input_key(ctx, NK_KEY_TAB, down); break;
-                    case SDLK_BACKSPACE: nk_input_key(ctx, NK_KEY_BACKSPACE, down); break;
-                    case SDLK_HOME:      nk_input_key(ctx, NK_KEY_TEXT_START, down);
-                                         nk_input_key(ctx, NK_KEY_SCROLL_START, down); break;
-                    case SDLK_END:       nk_input_key(ctx, NK_KEY_TEXT_END, down);
-                                         nk_input_key(ctx, NK_KEY_SCROLL_END, down); break;
-                    case SDLK_PAGEDOWN:  nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); break;
-                    case SDLK_PAGEUP:    nk_input_key(ctx, NK_KEY_SCROLL_UP, down); break;
-                    case SDLK_z:         nk_input_key(ctx, NK_KEY_TEXT_UNDO, down && state[SDL_SCANCODE_LCTRL]); break;
-                    case SDLK_r:         nk_input_key(ctx, NK_KEY_TEXT_REDO, down && state[SDL_SCANCODE_LCTRL]); break;
-                    case SDLK_c:         nk_input_key(ctx, NK_KEY_COPY, down && state[SDL_SCANCODE_LCTRL]); break;
-                    case SDLK_v:         nk_input_key(ctx, NK_KEY_PASTE, down && state[SDL_SCANCODE_LCTRL]); break;
-                    case SDLK_x:         nk_input_key(ctx, NK_KEY_CUT, down && state[SDL_SCANCODE_LCTRL]); break;
-                    case SDLK_b:         nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down && state[SDL_SCANCODE_LCTRL]); break;
-                    case SDLK_e:         nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down && state[SDL_SCANCODE_LCTRL]); break;
-                    case SDLK_UP:        nk_input_key(ctx, NK_KEY_UP, down); break;
-                    case SDLK_DOWN:      nk_input_key(ctx, NK_KEY_DOWN, down); break;
-                    case SDLK_LEFT:
-                        if (state[SDL_SCANCODE_LCTRL])
-                            nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down);
-                        else nk_input_key(ctx, NK_KEY_LEFT, down);
-                        break;
-                    case SDLK_RIGHT:
-                        if (state[SDL_SCANCODE_LCTRL])
-                            nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down);
-                        else nk_input_key(ctx, NK_KEY_RIGHT, down);
-                        break;
-                }
-            }
-            return 1;
-
-        case SDL_MOUSEBUTTONUP: /* MOUSEBUTTONUP & MOUSEBUTTONDOWN share same routine */
-        case SDL_MOUSEBUTTONDOWN:
-            {
-                int down = evt->type == SDL_MOUSEBUTTONDOWN;
-                const int x = evt->button.x, y = evt->button.y;
-                switch(evt->button.button)
-                {
-                    case SDL_BUTTON_LEFT:
-                        if (evt->button.clicks > 1)
-                            nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, down);
-                        nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); break;
-                    case SDL_BUTTON_MIDDLE: nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); break;
-                    case SDL_BUTTON_RIGHT:  nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); break;
-                }
-            }
-            return 1;
-
-        case SDL_MOUSEMOTION:
-            if (ctx->input.mouse.grabbed) {
-                int x = (int)ctx->input.mouse.prev.x, y = (int)ctx->input.mouse.prev.y;
-                nk_input_motion(ctx, x + evt->motion.xrel, y + evt->motion.yrel);
-            }
-            else nk_input_motion(ctx, evt->motion.x, evt->motion.y);
-            return 1;
-
-        case SDL_TEXTINPUT:
-            {
-                nk_glyph glyph;
-                memcpy(glyph, evt->text.text, NK_UTF_SIZE);
-                nk_input_glyph(ctx, glyph);
-            }
-            return 1;
-
-        case SDL_MOUSEWHEEL:
-            nk_input_scroll(ctx,nk_vec2((float)evt->wheel.x,(float)evt->wheel.y));
-            return 1;
-    }
-    return 0;
-}
-
-NK_API
-void nk_sdl_shutdown(void)
-{
-    struct nk_sdl_device *dev = &sdl.ogl;
-    nk_font_atlas_clear(&sdl.atlas);
-    nk_free(&sdl.ctx);
-    SDL_DestroyTexture(dev->font_tex);
-    /* glDeleteTextures(1, &dev->font_tex); */
-    nk_buffer_free(&dev->cmds);
-    memset(&sdl, 0, sizeof(sdl));
-}
-
-#endif /* NK_SDL_RENDERER_IMPLEMENTATION */

external/tinyfiledialogs.h

@@ -1,314 +0,0 @@
-/* SPDX-License-Identifier: Zlib
-Copyright (c) 2014 - 2024 Guillaume Vareille http://ysengrin.com
-	 ____________________________________________________________________
-	|                                                                    |
-	| 100% compatible C C++  ->  You can rename tinfiledialogs.c as .cpp |
-	|____________________________________________________________________|
-
-********* TINY FILE DIALOGS OFFICIAL WEBSITE IS ON SOURCEFORGE *********
-  _________
- /         \ tinyfiledialogs.h v3.18.2 [Jun 8, 2024]
- |tiny file| Unique header file created [November 9, 2014]
- | dialogs |
- \____  ___/ http://tinyfiledialogs.sourceforge.net
-      \|     git clone http://git.code.sf.net/p/tinyfiledialogs/code tinyfd
- ____________________________________________
-|                                            |
-|   email: tinyfiledialogs at ysengrin.com   |
-|____________________________________________|
- ________________________________________________________________________________
-|  ____________________________________________________________________________  |
-| |                                                                            | |
-| |  - in tinyfiledialogs, char is UTF-8 by default (since v3.6)               | |
-| |                                                                            | |
-| | on windows:                                                                | |
-| |  - for UTF-16, use the wchar_t functions at the bottom of the header file  | |
-| |                                                                            | |
-| |  - _wfopen() requires wchar_t                                              | |
-| |  - fopen() uses char but expects ASCII or MBCS (not UTF-8)                 | |
-| |  - if you want char to be MBCS: set tinyfd_winUtf8 to 0                    | |
-| |                                                                            | |
-| |  - alternatively, tinyfiledialogs provides                                 | |
-| |                        functions to convert between UTF-8, UTF-16 and MBCS | |
-| |____________________________________________________________________________| |
-|________________________________________________________________________________|
-
-If you like tinyfiledialogs, please upvote my stackoverflow answer
-https://stackoverflow.com/a/47651444
-
-- License -
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-1. The origin of this software must not be misrepresented; you must not
-claim that you wrote the original software.  If you use this software
-in a product, an acknowledgment in the product documentation would be
-appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-     __________________________________________
-    |  ______________________________________  |
-    | |                                      | |
-    | | DO NOT USE USER INPUT IN THE DIALOGS | |
-    | |______________________________________| |
-    |__________________________________________|
-*/
-
-#ifndef TINYFILEDIALOGS_H
-#define TINYFILEDIALOGS_H
-
-#ifdef	__cplusplus
-extern "C" {
-#endif
-
-/******************************************************************************************************/
-/**************************************** UTF-8 on Windows ********************************************/
-/******************************************************************************************************/
-#ifdef _WIN32
-/* On windows, if you want to use UTF-8 ( instead of the UTF-16/wchar_t functions at the end of this file )
-Make sure your code is really prepared for UTF-8 (on windows, functions like fopen() expect MBCS and not UTF-8) */
-extern int tinyfd_winUtf8; /* on windows char strings can be 1:UTF-8(default) or 0:MBCS */
-/* for MBCS change this to 0, in tinyfiledialogs.c or in your code */
-
-/* Here are some functions to help you convert between UTF-16 UTF-8 MBSC */
-char * tinyfd_utf8toMbcs(char const * aUtf8string);
-char * tinyfd_utf16toMbcs(wchar_t const * aUtf16string);
-wchar_t * tinyfd_mbcsTo16(char const * aMbcsString);
-char * tinyfd_mbcsTo8(char const * aMbcsString);
-wchar_t * tinyfd_utf8to16(char const * aUtf8string);
-char * tinyfd_utf16to8(wchar_t const * aUtf16string);
-#endif
-/******************************************************************************************************/
-/******************************************************************************************************/
-/******************************************************************************************************/
-
-/************* 3 funtions for C# (you don't need this in C or C++) : */
-char const * tinyfd_getGlobalChar(char const * aCharVariableName); /* returns NULL on error */
-int tinyfd_getGlobalInt(char const * aIntVariableName); /* returns -1 on error */
-int tinyfd_setGlobalInt(char const * aIntVariableName, int aValue); /* returns -1 on error */
-/* aCharVariableName: "tinyfd_version" "tinyfd_needs" "tinyfd_response"
-   aIntVariableName : "tinyfd_verbose" "tinyfd_silent" "tinyfd_allowCursesDialogs"
-				      "tinyfd_forceConsole" "tinyfd_assumeGraphicDisplay" "tinyfd_winUtf8"
-**************/
-
-extern char tinyfd_version[8]; /* contains tinyfd current version number */
-extern char tinyfd_needs[]; /* info about requirements */
-extern int tinyfd_verbose; /* 0 (default) or 1 : on unix, prints the command line calls */
-extern int tinyfd_silent; /* 1 (default) or 0 : on unix, hide errors and warnings from called dialogs */
-
-/** Curses dialogs are difficult to use and counter-intuitive.
-On windows they are only ascii and still uses the unix backslash ! **/
-extern int tinyfd_allowCursesDialogs; /* 0 (default) or 1 */
-
-extern int tinyfd_forceConsole;  /* 0 (default) or 1 */
-/* for unix & windows: 0 (graphic mode) or 1 (console mode).
-0: try to use a graphic solution, if it fails then it uses console mode.
-1: forces all dialogs into console mode even when an X server is present.
-   if enabled, it can use the package Dialog or dialog.exe.
-   on windows it only make sense for console applications */
-
-extern int tinyfd_assumeGraphicDisplay; /* 0 (default) or 1  */
-/* some systems don't set the environment variable DISPLAY even when a graphic display is present.
-set this to 1 to tell tinyfiledialogs to assume the existence of a graphic display */
-
-extern char tinyfd_response[1024];
-/* if you pass "tinyfd_query" as aTitle,
-the functions will not display the dialogs
-but will return 0 for console mode, 1 for graphic mode.
-tinyfd_response is then filled with the retain solution.
-possible values for tinyfd_response are (all lowercase)
-for graphic mode:
-  windows_wchar windows applescript kdialog zenity zenity3 yad matedialog
-  shellementary qarma python2-tkinter python3-tkinter python-dbus
-  perl-dbus gxmessage gmessage xmessage xdialog gdialog dunst
-for console mode:
-  dialog whiptail basicinput no_solution */
-
-void tinyfd_beep(void);
-
-int tinyfd_notifyPopup(
-	char const * aTitle, /* NULL or "" */
-	char const * aMessage, /* NULL or "" may contain \n \t */
-	char const * aIconType); /* "info" "warning" "error" */
-		/* return has only meaning for tinyfd_query */
-
-int tinyfd_messageBox(
-	char const * aTitle , /* NULL or "" */
-	char const * aMessage , /* NULL or "" may contain \n \t */
-	char const * aDialogType , /* "ok" "okcancel" "yesno" "yesnocancel" */
-	char const * aIconType , /* "info" "warning" "error" "question" */
-	int aDefaultButton ) ;
-		/* 0 for cancel/no , 1 for ok/yes , 2 for no in yesnocancel */
-
-char * tinyfd_inputBox(
-	char const * aTitle , /* NULL or "" */
-	char const * aMessage , /* NULL or "" (\n and \t have no effect) */
-	char const * aDefaultInput ) ;  /* NULL = passwordBox, "" = inputbox */
-		/* returns NULL on cancel */
-
-char * tinyfd_saveFileDialog(
-	char const * aTitle , /* NULL or "" */
-	char const * aDefaultPathAndOrFile , /* NULL or "" , ends with / to set only a directory */
-	int aNumOfFilterPatterns , /* 0  (1 in the following example) */
-	char const * const * aFilterPatterns , /* NULL or char const * lFilterPatterns[1]={"*.txt"} */
-	char const * aSingleFilterDescription ) ; /* NULL or "text files" */
-		/* returns NULL on cancel */
-
-char * tinyfd_openFileDialog(
-	char const * aTitle, /* NULL or "" */
-	char const * aDefaultPathAndOrFile, /* NULL or "" , ends with / to set only a directory */
-	int aNumOfFilterPatterns , /* 0 (2 in the following example) */
-	char const * const * aFilterPatterns, /* NULL or char const * lFilterPatterns[2]={"*.png","*.jpg"}; */
-	char const * aSingleFilterDescription, /* NULL or "image files" */
-	int aAllowMultipleSelects ) ; /* 0 or 1 */
-		/* in case of multiple files, the separator is | */
-		/* returns NULL on cancel */
-
-char * tinyfd_selectFolderDialog(
-	char const * aTitle, /* NULL or "" */
-	char const * aDefaultPath); /* NULL or "" */
-		/* returns NULL on cancel */
-
-char * tinyfd_colorChooser(
-	char const * aTitle, /* NULL or "" */
-	char const * aDefaultHexRGB, /* NULL or "" or "#FF0000" */
-	unsigned char const aDefaultRGB[3] , /* unsigned char lDefaultRGB[3] = { 0 , 128 , 255 }; */
-	unsigned char aoResultRGB[3] ) ; /* unsigned char lResultRGB[3]; */
-		/* aDefaultRGB is used only if aDefaultHexRGB is absent */
-		/* aDefaultRGB and aoResultRGB can be the same array */
-		/* returns NULL on cancel */
-		/* returns the hexcolor as a string "#FF0000" */
-		/* aoResultRGB also contains the result */
-
-
-/************ WINDOWS ONLY SECTION ************************/
-#ifdef _WIN32
-
-/* windows only - utf-16 version */
-int tinyfd_notifyPopupW(
-	wchar_t const * aTitle, /* NULL or L"" */
-	wchar_t const * aMessage, /* NULL or L"" may contain \n \t */
-	wchar_t const * aIconType); /* L"info" L"warning" L"error" */
-
-/* windows only - utf-16 version */
-int tinyfd_messageBoxW(
-	wchar_t const * aTitle, /* NULL or L"" */
-	wchar_t const * aMessage, /* NULL or L"" may contain \n \t */
-	wchar_t const * aDialogType, /* L"ok" L"okcancel" L"yesno" */
-	wchar_t const * aIconType, /* L"info" L"warning" L"error" L"question" */
-	int aDefaultButton ); /* 0 for cancel/no , 1 for ok/yes */
-		/* returns 0 for cancel/no , 1 for ok/yes */
-
-/* windows only - utf-16 version */
-wchar_t * tinyfd_inputBoxW(
-	wchar_t const * aTitle, /* NULL or L"" */
-	wchar_t const * aMessage, /* NULL or L"" (\n nor \t not respected) */
-	wchar_t const * aDefaultInput); /* NULL passwordBox, L"" inputbox */
-
-/* windows only - utf-16 version */
-wchar_t * tinyfd_saveFileDialogW(
-	wchar_t const * aTitle, /* NULL or L"" */
-	wchar_t const * aDefaultPathAndOrFile, /* NULL or L"" , ends with / to set only a directory */
-	int aNumOfFilterPatterns, /* 0 (1 in the following example) */
-	wchar_t const * const * aFilterPatterns, /* NULL or wchar_t const * lFilterPatterns[1]={L"*.txt"} */
-	wchar_t const * aSingleFilterDescription); /* NULL or L"text files" */
-		/* returns NULL on cancel */
-
-/* windows only - utf-16 version */
-wchar_t * tinyfd_openFileDialogW(
-	wchar_t const * aTitle, /* NULL or L"" */
-	wchar_t const * aDefaultPathAndOrFile, /* NULL or L"" , ends with / to set only a directory */
-	int aNumOfFilterPatterns , /* 0 (2 in the following example) */
-	wchar_t const * const * aFilterPatterns, /* NULL or wchar_t const * lFilterPatterns[2]={L"*.png","*.jpg"} */
-	wchar_t const * aSingleFilterDescription, /* NULL or L"image files" */
-	int aAllowMultipleSelects ) ; /* 0 or 1 */
-		/* in case of multiple files, the separator is | */
-		/* returns NULL on cancel */
-
-/* windows only - utf-16 version */
-wchar_t * tinyfd_selectFolderDialogW(
-	wchar_t const * aTitle, /* NULL or L"" */
-	wchar_t const * aDefaultPath); /* NULL or L"" */
-		/* returns NULL on cancel */
-
-/* windows only - utf-16 version */
-wchar_t * tinyfd_colorChooserW(
-	wchar_t const * aTitle, /* NULL or L"" */
-	wchar_t const * aDefaultHexRGB, /* NULL or L"#FF0000" */
-	unsigned char const aDefaultRGB[3], /* unsigned char lDefaultRGB[3] = { 0 , 128 , 255 }; */
-	unsigned char aoResultRGB[3]); /* unsigned char lResultRGB[3]; */
-		/* returns the hexcolor as a string L"#FF0000" */
-		/* aoResultRGB also contains the result */
-		/* aDefaultRGB is used only if aDefaultHexRGB is NULL */
-		/* aDefaultRGB and aoResultRGB can be the same array */
-		/* returns NULL on cancel */
-
-#endif /*_WIN32 */
-
-#ifdef	__cplusplus
-} /*extern "C"*/
-#endif
-
-#endif /* TINYFILEDIALOGS_H */
-
-/*
- ________________________________________________________________________________
-|  ____________________________________________________________________________  |
-| |                                                                            | |
-| | on windows:                                                                | |
-| |  - for UTF-16, use the wchar_t functions at the bottom of the header file  | |
-| |  - _wfopen() requires wchar_t                                              | |
-| |                                                                            | |
-| |  - in tinyfiledialogs, char is UTF-8 by default (since v3.6)               | |
-| |  - but fopen() expects MBCS (not UTF-8)                                    | |
-| |  - if you want char to be MBCS: set tinyfd_winUtf8 to 0                    | |
-| |                                                                            | |
-| |  - alternatively, tinyfiledialogs provides                                 | |
-| |                        functions to convert between UTF-8, UTF-16 and MBCS | |
-| |____________________________________________________________________________| |
-|________________________________________________________________________________|
-
-- This is not for ios nor android (it works in termux though).
-- The files can be renamed with extension ".cpp" as the code is 100% compatible C C++
-  (just comment out << extern "C" >> in the header file)
-- Windows is fully supported from XP to 10 (maybe even older versions)
-- C# & LUA via dll, see files in the folder EXTRAS
-- OSX supported from 10.4 to latest (maybe even older versions)
-- Do not use " and ' as the dialogs will be displayed with a warning
-  instead of the title, message, etc...
-- There's one file filter only, it may contain several patterns.
-- If no filter description is provided,
-  the list of patterns will become the description.
-- On windows link against Comdlg32.lib and Ole32.lib
-  (on windows the no linking claim is a lie)
-- On unix: it tries command line calls, so no such need (NO LINKING).
-- On unix you need one of the following:
-  applescript, kdialog, zenity, matedialog, shellementary, qarma, yad,
-  python (2 or 3)/tkinter/python-dbus (optional), Xdialog
-  or curses dialogs (opens terminal if running without console).
-- One of those is already included on most (if not all) desktops.
-- In the absence of those it will use gdialog, gxmessage or whiptail
-  with a textinputbox. If nothing is found, it switches to basic console input,
-  it opens a console if needed (requires xterm + bash).
-- for curses dialogs you must set tinyfd_allowCursesDialogs=1
-- You can query the type of dialog that will be used (pass "tinyfd_query" as aTitle)
-- String memory is preallocated statically for all the returned values.
-- File and path names are tested before return, they should be valid.
-- tinyfd_forceConsole=1; at run time, forces dialogs into console mode.
-- On windows, console mode only make sense for console applications.
-- On windows, console mode is not implemented for wchar_T UTF-16.
-- Mutiple selects are not possible in console mode.
-- The package dialog must be installed to run in curses dialogs in console mode.
-  It is already installed on most unix systems.
-- On osx, the package dialog can be installed via
-  http://macappstore.org/dialog or http://macports.org
-- On windows, for curses dialogs console mode,
-  dialog.exe should be copied somewhere on your executable path.
-  It can be found at the bottom of the following page:
-  http://andrear.altervista.org/home/cdialog.php
-*/

game.c

@@ -0,0 +1,71 @@
+#include <audio.h>
+#include <assets.h>
+#include <controller.h>
+#include <game.h>
+#include <SDL2/SDL.h>
+#include <stdbool.h>
+#include <time.h>
+
+typedef struct {
+    GraphicsContext *gfx;
+    AudioContext aud;
+    int16_t audioBuffer[834 * 2];
+} GameState;
+
+int onFrame(VB *sim) {
+    static uint8_t leftEye[384*224];
+    static uint8_t rightEye[384*224];
+    GameState *state;
+    void *samples;
+    uint32_t samplePairs;
+
+    state = vbGetUserData(sim);
+    
+    vbGetPixels(sim, leftEye, 1, 384, rightEye, 1, 384);
+    gfxUpdateLeftEye(state->gfx, leftEye);
+    gfxUpdateRightEye(state->gfx, rightEye);
+
+    samples = vbGetSamples(sim, NULL, NULL, &samplePairs);
+    audioUpdate(&state->aud, samples, samplePairs * 4);
+    vbSetSamples(sim, samples, VB_S16, 834);
+    gfxRender(state->gfx);
+    return 1;
+}
+
+#define MAX_STEP_CLOCKS 20000000
+
+int runGame(VB *sim, GraphicsContext *gfx) {
+    uint32_t clocks;
+    SDL_Event event;
+    GameState state;
+    ControllerState ctrl;
+
+    state.gfx = gfx;
+    audioInit(&state.aud);
+    vbSetSamples(sim, &state.audioBuffer, VB_S16, 834);
+    vbSetUserData(sim, &state);
+    vbSetFrameCallback(sim, &onFrame);
+
+    ctrlInit(&ctrl);
+
+    gfxUpdateLeftEye(gfx, LEFT_EYE_DEFAULT);
+    gfxUpdateRightEye(gfx, RIGHT_EYE_DEFAULT);
+
+    while (1) {
+        clocks = MAX_STEP_CLOCKS;
+        vbEmulate(sim, &clocks);
+
+        while (SDL_PollEvent(&event)) {
+            if (event.type == SDL_QUIT) {
+                return 0;
+            }
+            if (event.type == SDL_KEYDOWN) {
+                ctrlKeyDown(&ctrl, event.key.keysym.sym);
+            }
+            if (event.type == SDL_KEYUP) {
+                ctrlKeyUp(&ctrl, event.key.keysym.sym);
+            }
+        }
+        vbSetKeys(sim, ctrlKeys(&ctrl));
+    }
+}

game.h

@@ -0,0 +1,9 @@
+#ifndef SHROOMS_VB_NATIVE_GAME_
+#define SHROOMS_VB_NATIVE_GAME_
+
+#include "graphics.h"
+#include "shrooms-vb-core/core/vb.h"
+
+int runGame(VB *sim, GraphicsContext *gfx);
+
+#endif

graphics.c

@@ -0,0 +1,92 @@
+#include <graphics.h>
+
+static void copyScreenTexture(uint8_t *dst, const uint8_t *src, int pitch) {
+    int x, y, i;
+    uint8_t color;
+    int delta = pitch / 384;
+    for (y = 0; y < 224; ++y) {
+        for (x = 0; x < 384; x += 1) {
+            color = src[(y * 384) + x];
+            for (i = 0; i < delta; ++i) {
+                dst[(y * pitch) + (x * delta) + i] = color;
+            }
+        }
+    }
+}
+
+int gfxInit(GraphicsContext *gfx) {
+    gfx->window = SDL_CreateWindow("Shrooms VB",
+        SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
+        1536, 896, SDL_WINDOW_SHOWN | SDL_WINDOW_ALLOW_HIGHDPI);
+    if (!gfx->window) {
+        fprintf(stderr, "Error creating window: %s\n", SDL_GetError());
+        return 1;
+    }
+
+    gfx->renderer = SDL_CreateRenderer(gfx->window, -1, 0);
+    if (!gfx->renderer) {
+        fprintf(stderr, "Error creating renderer: %s\n", SDL_GetError());
+        goto cleanup_window;
+    }
+
+    gfx->winSurface = SDL_GetWindowSurface(gfx->window);
+    if (!gfx->winSurface) {
+        fprintf(stderr, "Error getting surface: %s\n", SDL_GetError());
+        goto cleanup_window;
+    }
+
+    gfx->leftEye = SDL_CreateTexture(gfx->renderer, SDL_PIXELFORMAT_RGB24, SDL_TEXTUREACCESS_STREAMING, 384, 224);
+    if (!gfx->leftEye) {
+        fprintf(stderr, "Error creating left eye texture: %s\n", SDL_GetError());
+        goto cleanup_window;
+    }
+    SDL_SetTextureColorMod(gfx->leftEye, 0xff, 0, 0);
+
+    gfx->rightEye = SDL_CreateTexture(gfx->renderer, SDL_PIXELFORMAT_RGB24, SDL_TEXTUREACCESS_STREAMING, 384, 224);
+    if (!gfx->rightEye) {
+        fprintf(stderr, "Error creating left eye texture: %s\n", SDL_GetError());
+        goto cleanup_left_eye;
+    }
+    SDL_SetTextureColorMod(gfx->rightEye, 0, 0xc6, 0xf0);
+    SDL_SetTextureBlendMode(gfx->rightEye, SDL_BLENDMODE_ADD);
+
+    return 0;
+
+cleanup_left_eye:
+    SDL_DestroyTexture(gfx->leftEye);
+cleanup_window:
+    SDL_DestroyWindow(gfx->window);
+    return 1;
+}
+
+void gfxDestroy(GraphicsContext *gfx) {
+    SDL_DestroyTexture(gfx->rightEye);
+    SDL_DestroyTexture(gfx->leftEye);
+    SDL_DestroyWindow(gfx->window);
+}
+
+static void gfxUpdateEye(SDL_Texture *eye, const uint8_t *bytes) {
+    void *target;
+    int pitch;
+    if (SDL_LockTexture(eye, NULL, &target, &pitch)) {
+        fprintf(stderr, "Error locking buffer for eye: %s\n", SDL_GetError());
+        return;
+    }
+    copyScreenTexture(target, bytes, pitch);
+    SDL_UnlockTexture(eye);
+}
+
+void gfxUpdateLeftEye(GraphicsContext *gfx, const uint8_t *bytes) {
+    gfxUpdateEye(gfx->leftEye, bytes);
+}
+void gfxUpdateRightEye(GraphicsContext *gfx, const uint8_t *bytes) {
+    gfxUpdateEye(gfx->rightEye, bytes);
+}
+
+void gfxRender(GraphicsContext *gfx) {
+    SDL_RenderClear(gfx->renderer);
+    SDL_RenderCopy(gfx->renderer, gfx->leftEye, NULL, NULL);
+    SDL_RenderCopy(gfx->renderer, gfx->rightEye, NULL, NULL);
+    SDL_RenderPresent(gfx->renderer);
+}
+

graphics.h

@@ -0,0 +1,22 @@
+#ifndef SHROOMS_VB_NATIVE_GRAPHICS_
+#define SHROOMS_VB_NATIVE_GRAPHICS_
+
+#include <SDL2/SDL.h>
+
+typedef struct {
+    SDL_Window *window;
+    SDL_Surface *winSurface;
+    SDL_Renderer *renderer;
+    SDL_Texture *leftEye;
+    SDL_Texture *rightEye;
+} GraphicsContext;
+
+int gfxInit(GraphicsContext *gfx);
+void gfxDestroy(GraphicsContext *gfx);
+
+void gfxUpdateLeftEye(GraphicsContext *gfx, const uint8_t *bytes);
+void gfxUpdateRightEye(GraphicsContext *gfx, const uint8_t *bytes);
+
+void gfxRender(GraphicsContext *gfx);
+
+#endif

main.c

@@ -1,41 +1,85 @@
-#include "cli.h"
+#include <cli.h>
+#include <game.h>
+#include <graphics.h>
 #include <SDL2/SDL.h>
-#include <stdbool.h>
+#include "shrooms-vb-core/core/vb.h"
 #include <stdio.h>
-#include "ui.h"
+
+uint8_t *readROM(char *filename, uint32_t *size) {
+    FILE *file = fopen(filename, "rb");
+    uint8_t *rom;
+    long filesize;
+
+    if (!file) {
+        perror("could not open file");
+        return NULL;
+    }
+
+    if (fseek(file, 0, SEEK_END)) {
+        perror("could not seek file end");
+        return NULL;
+    }
+    filesize = ftell(file);
+    if (filesize == -1) {
+        perror("could not read file size");
+        return NULL;
+    }
+    if (fseek(file, 0, SEEK_SET)) {
+        perror("could not seek file start");
+        return NULL;
+    }
+
+    *size = (uint32_t) filesize;
+    rom = malloc(*size);
+    if (!rom) {
+        perror("could not allocate ROM");
+        return NULL;
+    }
+    fread(rom, 1, *size, file);
+    if (ferror(file)) {
+        perror("could not read file");
+        return NULL;
+    }
+    if (fclose(file)) {
+        perror("could not close file");
+        return NULL;
+    }
+
+    return rom;
+}
 
 int main(int argc, char **argv) {
+    VB *sim;
+    uint8_t *rom;
+    uint32_t romSize;
+    GraphicsContext gfx;
     CLIArgs args;
-    UIContext *ui;
     int status;
-    bool running = false;
 
     if (parseCLIArgs(argc, argv, &args)) {
         return 1;
     }
     
-    SDL_SetHint(SDL_HINT_VIDEO_HIGHDPI_DISABLED, "0");
+    rom = readROM(args.filename, &romSize);
-    SDL_SetHint(SDL_HINT_WINDOWS_DPI_AWARENESS, "system");
+    if (!rom) {
+        return 1;
+    }
+
+    sim = malloc(vbSizeOf());
+    vbInit(sim);
+    vbSetCartROM(sim, rom, romSize);
+
     if (SDL_Init(SDL_INIT_EVERYTHING)) {
         fprintf(stderr, "Error initializing SDL: %s\n", SDL_GetError());
         return 1;
     }
 
-    ui = uiInit();
+    if (gfxInit(&gfx)) {
-    if (!ui) {
         SDL_Quit();
         return 1;
     }
 
-    if (args.filename) {
+    status = runGame(sim, &gfx);
-        if (uiLoadGame(ui, args.filename)) {
-            return 1;
-        }
-        running = true;
-    }
-
-    status = uiRun(ui, running);
-    uiDestroy(ui);
     SDL_Quit();
     return status;
 }

makefile

@@ -1,12 +1,13 @@
 CC?=gcc
 LD?=ld
+SHROOMSFLAGS=shrooms-vb-core/core/vb.c -I shrooms-vb-core/core
 msys_version := $(if $(findstring Msys, $(shell uname -o)),$(word 1, $(subst ., ,$(shell uname -r))),0)
 
 ifeq ($(msys_version), 0)
-PKGFLAGS=$(shell pkg-config sdl2 --cflags --libs)
+SDL2FLAGS=$(shell pkg-config sdl2 --cflags --libs)
 BINLINKFLAGS=-z noexecstack
 else
-PKGFLAGS=$(shell pkg-config sdl2 --cflags --libs) -mwindows -mconsole -lcomdlg32 -lole32
+SDL2FLAGS=$(shell pkg-config sdl2 --cflags --libs) -mwindows -mconsole
 BINLINKFLAGS=
 endif
 
@@ -18,30 +19,23 @@ CFILES := $(foreach dir,./,$(notdir $(wildcard $(dir)/*.c)))
 BINFILES := $(foreach dir,assets/,$(notdir $(wildcard $(dir)/*.bin)))
 
 COBJS := $(CFILES:%.c=output/%.o)
-EXTOBJS = output/vb.o output/tinyfiledialogs.o
+SHROOMSOBJS := output/vb.o
 BINOBJS := $(BINFILES:%.bin=output/%.o)
 
-OFILES := $(COBJS) $(EXTOBJS) $(BINOBJS)
+OFILES := $(COBJS) $(SHROOMSOBJS) $(BINOBJS)
 
 output/%.o: %.c
 	@mkdir -p output
 	@$(CC) -c -o $@ $< -I . \
-		-I shrooms-vb-core/core $(PKGFLAGS) \
+		-I shrooms-vb-core/core $(SDL2FLAGS) \
-		-O3 -flto=auto -Wno-long-long \
+		-O3 -flto -fno-strict-aliasing \
 		-Werror -std=c90 -Wall -Wextra -Wpedantic
 
 output/vb.o: shrooms-vb-core/core/vb.c
 	@mkdir -p output
 	@$(CC) -c -o $@ $< -I . \
-		-I shrooms-vb-core/core \
+		-I shrooms-vb-core/core $(SDL2FLAGS) \
-		-O3 -flto=auto -fno-strict-aliasing \
+		-O3 -flto -fno-strict-aliasing \
-		-Werror -std=c90 -Wall -Wextra -Wpedantic
-
-output/tinyfiledialogs.o: external/tinyfiledialogs.c
-	@mkdir -p output
-	@$(CC) -c -o $@ $< -I . \
-		-I external \
-		-O3 -flto=auto -fno-strict-aliasing -Wno-cast-function-type \
 		-Werror -std=c90 -Wall -Wextra -Wpedantic
 
 output/%.o: assets/%.bin
@@ -49,6 +43,6 @@ output/%.o: assets/%.bin
 	@$(LD) -r -b binary $(BINLINKFLAGS) -o $@ $<
 
 shrooms-vb: $(OFILES)
-	@$(CC) -o $@ $(OFILES) $(PKGFLAGS) -lm -flto=auto
+	@$(CC) -o $@ $(OFILES) $(SDL2FLAGS) -flto
 
 build: shrooms-vb

nuklear.c

@@ -1,3 +0,0 @@
-#define NK_IMPLEMENTATION
-#define NK_SDL_RENDERER_IMPLEMENTATION
-#include "nuklear.h"

nuklear.h

@@ -1,17 +0,0 @@
-#ifndef SHROOMS_VB_NATIVE_NUKLEAR_
-#define SHROOMS_VB_NATIVE_NUKLEAR_
-
-#define NK_INCLUDE_FIXED_TYPES
-#define NK_INCLUDE_STANDARD_BOOL
-#define NK_INCLUDE_STANDARD_IO
-#define NK_INCLUDE_STANDARD_VARARGS
-#define NK_INCLUDE_DEFAULT_ALLOCATOR
-#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
-#define NK_INCLUDE_FONT_BAKING
-#define NK_INCLUDE_DEFAULT_FONT
-#include "external/nuklear.h"
-
-#define NK_SDL_RENDERER_SDL_H <SDL2/SDL.h>
-#include "external/nuklear_sdl_renderer.h"
-
-#endif

src/anaglyph.wgsl

@@ -0,0 +1,49 @@
+// Vertex shader
+
+struct VertexOutput {
+    @builtin(position) clip_position: vec4<f32>,
+    @location(0) tex_coords: vec2<f32>,
+};
+
+@vertex
+fn vs_main(
+    @builtin(vertex_index) in_vertex_index: u32,
+) -> VertexOutput {
+    var out: VertexOutput;
+    var x: f32;
+    var y: f32;
+    switch in_vertex_index {
+        case 0u, 3u: {
+            x = -1.0;
+            y = 1.0;
+        }
+        case 1u: {
+            x = -1.0;
+            y = -1.0;
+        }
+        case 2u, 4u: {
+            x = 1.0;
+            y = -1.0;
+        }
+        default: {
+            x = 1.0;
+            y = 1.0;
+        }
+    }
+    out.clip_position = vec4<f32>(x, y, 0.0, 1.0);
+    out.tex_coords = vec2<f32>((x + 1.0) / 2.0, (1.0 - y) / 2.0);
+    return out;
+}
+
+// Fragment shader
+@group(0) @binding(0)
+var u_texture: texture_2d<f32>;
+@group(0) @binding(1)
+var u_sampler: sampler;
+
+
+@fragment
+fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
+    return textureSample(u_texture, u_sampler, in.tex_coords);
+    // return vec4<f32>(0.3, 0.2, 0.1, 1.0);
+}

src/app.rs

@@ -0,0 +1,440 @@
+use imgui::*;
+use imgui_wgpu::{Renderer, RendererConfig};
+use imgui_winit_support::WinitPlatform;
+use pollster::block_on;
+use std::{sync::Arc, time::Instant};
+#[cfg(target_os = "windows")]
+use winit::platform::windows::{CornerPreference, WindowAttributesExtWindows as _};
+use winit::{
+    application::ApplicationHandler,
+    dpi::LogicalSize,
+    event::{ElementState, Event, WindowEvent},
+    event_loop::ActiveEventLoop,
+    keyboard::Key,
+    window::Window,
+};
+
+use crate::{
+    emulator::{EmulatorClient, EmulatorCommand},
+    renderer::GameRenderer,
+};
+
+struct ImguiState {
+    context: imgui::Context,
+    platform: WinitPlatform,
+    renderer: Renderer,
+    clear_color: wgpu::Color,
+    last_frame: Instant,
+    last_cursor: Option<MouseCursor>,
+}
+
+struct AppWindow {
+    device: wgpu::Device,
+    queue: Arc<wgpu::Queue>,
+    window: Arc<Window>,
+    surface_desc: wgpu::SurfaceConfiguration,
+    surface: wgpu::Surface<'static>,
+    hidpi_factor: f64,
+    pipeline: wgpu::RenderPipeline,
+    bind_group: wgpu::BindGroup,
+    imgui: Option<ImguiState>,
+}
+
+impl AppWindow {
+    fn setup_gpu(event_loop: &ActiveEventLoop, client: &EmulatorClient) -> Self {
+        let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
+            backends: wgpu::Backends::PRIMARY,
+            ..Default::default()
+        });
+
+        let window = {
+            let size = LogicalSize::new(384, 244);
+
+            let attributes = Window::default_attributes()
+                .with_inner_size(size)
+                .with_title("Shrooms VB");
+            #[cfg(target_os = "windows")]
+            let attributes = attributes.with_corner_preference(CornerPreference::DoNotRound);
+            Arc::new(event_loop.create_window(attributes).unwrap())
+        };
+
+        let size = window.inner_size();
+        let hidpi_factor = window.scale_factor();
+        let surface = instance.create_surface(window.clone()).unwrap();
+
+        let adapter = block_on(instance.request_adapter(&wgpu::RequestAdapterOptions {
+            power_preference: wgpu::PowerPreference::HighPerformance,
+            compatible_surface: Some(&surface),
+            force_fallback_adapter: false,
+        }))
+        .unwrap();
+
+        let (device, queue) =
+            block_on(adapter.request_device(&wgpu::DeviceDescriptor::default(), None)).unwrap();
+        let queue = Arc::new(queue);
+        let eyes = Arc::new(GameRenderer::create_texture(&device, "eye"));
+        client.send_command(EmulatorCommand::SetRenderer(GameRenderer {
+            queue: queue.clone(),
+            eyes: eyes.clone(),
+        }));
+        let eyes = eyes.create_view(&wgpu::TextureViewDescriptor::default());
+        let sampler = device.create_sampler(&wgpu::SamplerDescriptor::default());
+        let texture_bind_group_layout =
+            device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
+                label: Some("texture bind group layout"),
+                entries: &[
+                    wgpu::BindGroupLayoutEntry {
+                        binding: 0,
+                        visibility: wgpu::ShaderStages::FRAGMENT,
+                        ty: wgpu::BindingType::Texture {
+                            sample_type: wgpu::TextureSampleType::Float { filterable: true },
+                            view_dimension: wgpu::TextureViewDimension::D2,
+                            multisampled: false,
+                        },
+                        count: None,
+                    },
+                    wgpu::BindGroupLayoutEntry {
+                        binding: 1,
+                        visibility: wgpu::ShaderStages::FRAGMENT,
+                        ty: wgpu::BindingType::Sampler(wgpu::SamplerBindingType::Filtering),
+                        count: None,
+                    },
+                ],
+            });
+        let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
+            label: Some("bind group"),
+            layout: &texture_bind_group_layout,
+            entries: &[
+                wgpu::BindGroupEntry {
+                    binding: 0,
+                    resource: wgpu::BindingResource::TextureView(&eyes),
+                },
+                wgpu::BindGroupEntry {
+                    binding: 1,
+                    resource: wgpu::BindingResource::Sampler(&sampler),
+                },
+            ],
+        });
+
+        // Set up swap chain
+        let surface_desc = wgpu::SurfaceConfiguration {
+            usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
+            format: wgpu::TextureFormat::Bgra8UnormSrgb,
+            width: size.width,
+            height: size.height,
+            present_mode: wgpu::PresentMode::Fifo,
+            desired_maximum_frame_latency: 2,
+            alpha_mode: wgpu::CompositeAlphaMode::Auto,
+            view_formats: vec![wgpu::TextureFormat::Bgra8Unorm],
+        };
+
+        surface.configure(&device, &surface_desc);
+
+        let shader = device.create_shader_module(wgpu::include_wgsl!("anaglyph.wgsl"));
+        let render_pipeline_layout =
+            device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+                label: Some("render pipeline layout"),
+                bind_group_layouts: &[&texture_bind_group_layout],
+                push_constant_ranges: &[],
+            });
+        let render_pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+            label: Some("render pipeline"),
+            layout: Some(&render_pipeline_layout),
+            vertex: wgpu::VertexState {
+                module: &shader,
+                entry_point: "vs_main",
+                buffers: &[],
+                compilation_options: wgpu::PipelineCompilationOptions::default(),
+            },
+            fragment: Some(wgpu::FragmentState {
+                module: &shader,
+                entry_point: "fs_main",
+                targets: &[Some(wgpu::ColorTargetState {
+                    format: wgpu::TextureFormat::Bgra8UnormSrgb,
+                    blend: Some(wgpu::BlendState::REPLACE),
+                    write_mask: wgpu::ColorWrites::ALL,
+                })],
+                compilation_options: wgpu::PipelineCompilationOptions::default(),
+            }),
+            primitive: wgpu::PrimitiveState {
+                topology: wgpu::PrimitiveTopology::TriangleList,
+                strip_index_format: None,
+                front_face: wgpu::FrontFace::Ccw,
+                cull_mode: Some(wgpu::Face::Back),
+                polygon_mode: wgpu::PolygonMode::Fill,
+                unclipped_depth: false,
+                conservative: false,
+            },
+            depth_stencil: None,
+            multisample: wgpu::MultisampleState {
+                count: 1,
+                mask: !0,
+                alpha_to_coverage_enabled: false,
+            },
+            multiview: None,
+            cache: None,
+        });
+
+        let imgui = None;
+        Self {
+            device,
+            queue,
+            window,
+            surface_desc,
+            surface,
+            hidpi_factor,
+            pipeline: render_pipeline,
+            bind_group,
+            imgui,
+        }
+    }
+
+    fn setup_imgui(&mut self) {
+        let mut context = imgui::Context::create();
+        let mut platform = imgui_winit_support::WinitPlatform::new(&mut context);
+        platform.attach_window(
+            context.io_mut(),
+            &self.window,
+            imgui_winit_support::HiDpiMode::Default,
+        );
+        context.set_ini_filename(None);
+
+        let font_size = (13.0 * self.hidpi_factor) as f32;
+        context.io_mut().font_global_scale = (1.0 / self.hidpi_factor) as f32;
+
+        context.fonts().add_font(&[FontSource::DefaultFontData {
+            config: Some(imgui::FontConfig {
+                oversample_h: 1,
+                pixel_snap_h: true,
+                size_pixels: font_size,
+                ..Default::default()
+            }),
+        }]);
+
+        //
+        // Set up dear imgui wgpu renderer
+        //
+        let clear_color = wgpu::Color::BLACK;
+
+        let renderer_config = RendererConfig {
+            texture_format: self.surface_desc.format,
+            ..Default::default()
+        };
+
+        let renderer = Renderer::new(&mut context, &self.device, &self.queue, renderer_config);
+
+        let last_frame = Instant::now();
+        let last_cursor = None;
+
+        self.imgui = Some(ImguiState {
+            context,
+            platform,
+            renderer,
+            clear_color,
+            last_frame,
+            last_cursor,
+        })
+    }
+
+    fn new(event_loop: &ActiveEventLoop, client: &EmulatorClient) -> Self {
+        let mut window = Self::setup_gpu(event_loop, client);
+        window.setup_imgui();
+        window
+    }
+}
+
+pub struct App {
+    window: Option<AppWindow>,
+    client: EmulatorClient,
+}
+
+impl App {
+    pub fn new(client: EmulatorClient) -> Self {
+        Self {
+            window: None,
+            client,
+        }
+    }
+}
+
+impl ApplicationHandler for App {
+    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
+        self.window = Some(AppWindow::new(event_loop, &self.client));
+    }
+
+    fn window_event(
+        &mut self,
+        event_loop: &ActiveEventLoop,
+        window_id: winit::window::WindowId,
+        event: WindowEvent,
+    ) {
+        let window = self.window.as_mut().unwrap();
+        let imgui = window.imgui.as_mut().unwrap();
+
+        match &event {
+            WindowEvent::Resized(size) => {
+                window.surface_desc = wgpu::SurfaceConfiguration {
+                    usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
+                    format: wgpu::TextureFormat::Bgra8UnormSrgb,
+                    width: size.width,
+                    height: size.height,
+                    present_mode: wgpu::PresentMode::Fifo,
+                    desired_maximum_frame_latency: 2,
+                    alpha_mode: wgpu::CompositeAlphaMode::Auto,
+                    view_formats: vec![wgpu::TextureFormat::Bgra8Unorm],
+                };
+
+                window
+                    .surface
+                    .configure(&window.device, &window.surface_desc);
+            }
+            WindowEvent::CloseRequested => event_loop.exit(),
+            WindowEvent::KeyboardInput { event, .. } => {
+                if let Key::Character("s") = event.logical_key.as_ref() {
+                    match event.state {
+                        ElementState::Pressed => {
+                            self.client.send_command(EmulatorCommand::PressStart)
+                        }
+                        ElementState::Released => {
+                            self.client.send_command(EmulatorCommand::ReleaseStart)
+                        }
+                    }
+                }
+            }
+            WindowEvent::RedrawRequested => {
+                let now = Instant::now();
+                imgui
+                    .context
+                    .io_mut()
+                    .update_delta_time(now - imgui.last_frame);
+                imgui.last_frame = now;
+
+                let frame = match window.surface.get_current_texture() {
+                    Ok(frame) => frame,
+                    Err(e) => {
+                        eprintln!("dropped frame: {e:?}");
+                        return;
+                    }
+                };
+                imgui
+                    .platform
+                    .prepare_frame(imgui.context.io_mut(), &window.window)
+                    .expect("Failed to prepare frame");
+                let ui = imgui.context.frame();
+                let mut height = 0.0;
+                ui.main_menu_bar(|| {
+                    height = ui.window_size()[1];
+                    ui.menu("ROM", || {
+                        if ui.menu_item("Open ROM") {
+                            println!("clicked");
+                        }
+                        if ui.menu_item("Quit") {
+                            event_loop.exit();
+                        }
+                    });
+                    ui.menu("Emulation", || {
+                        if ui.menu_item("Pause") {
+                            println!("clicked");
+                        }
+                        if ui.menu_item("Reset") {
+                            println!("clicked");
+                        }
+                    });
+                });
+
+                let mut encoder: wgpu::CommandEncoder = window
+                    .device
+                    .create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
+
+                if imgui.last_cursor != ui.mouse_cursor() {
+                    imgui.last_cursor = ui.mouse_cursor();
+                    imgui.platform.prepare_render(ui, &window.window);
+                }
+
+                let view = frame
+                    .texture
+                    .create_view(&wgpu::TextureViewDescriptor::default());
+                let mut rpass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+                    label: None,
+                    color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+                        view: &view,
+                        resolve_target: None,
+                        ops: wgpu::Operations {
+                            load: wgpu::LoadOp::Clear(imgui.clear_color),
+                            store: wgpu::StoreOp::Store,
+                        },
+                    })],
+                    depth_stencil_attachment: None,
+                    timestamp_writes: None,
+                    occlusion_query_set: None,
+                });
+
+                rpass.set_pipeline(&window.pipeline);
+                let hidpi = window.hidpi_factor as f32;
+                rpass.set_viewport(0.0, height * hidpi, 384.0 * hidpi, 224.0 * hidpi, 0.0, 1.0);
+                rpass.set_bind_group(0, &window.bind_group, &[]);
+                rpass.draw(0..6, 0..1);
+
+                rpass.set_viewport(0.0, 0.0, 384.0 * hidpi, 224.0 * hidpi, 0.0, 1.0);
+                imgui
+                    .renderer
+                    .render(
+                        imgui.context.render(),
+                        &window.queue,
+                        &window.device,
+                        &mut rpass,
+                    )
+                    .expect("Rendering failed");
+
+                drop(rpass);
+
+                window.queue.submit(Some(encoder.finish()));
+
+                frame.present();
+            }
+            _ => (),
+        }
+
+        imgui.platform.handle_event::<()>(
+            imgui.context.io_mut(),
+            &window.window,
+            &Event::WindowEvent { window_id, event },
+        );
+    }
+
+    fn user_event(&mut self, _event_loop: &ActiveEventLoop, event: ()) {
+        let window = self.window.as_mut().unwrap();
+        let imgui = window.imgui.as_mut().unwrap();
+        imgui.platform.handle_event::<()>(
+            imgui.context.io_mut(),
+            &window.window,
+            &Event::UserEvent(event),
+        );
+    }
+
+    fn device_event(
+        &mut self,
+        _event_loop: &ActiveEventLoop,
+        device_id: winit::event::DeviceId,
+        event: winit::event::DeviceEvent,
+    ) {
+        let window = self.window.as_mut().unwrap();
+        let imgui = window.imgui.as_mut().unwrap();
+        imgui.platform.handle_event::<()>(
+            imgui.context.io_mut(),
+            &window.window,
+            &Event::DeviceEvent { device_id, event },
+        );
+    }
+
+    fn about_to_wait(&mut self, _event_loop: &ActiveEventLoop) {
+        let window = self.window.as_mut().unwrap();
+        let imgui = window.imgui.as_mut().unwrap();
+        window.window.request_redraw();
+        imgui.platform.handle_event::<()>(
+            imgui.context.io_mut(),
+            &window.window,
+            &Event::AboutToWait,
+        );
+    }
+}

src/emulator.rs

@@ -0,0 +1,93 @@
+use std::{
+    fs,
+    path::Path,
+    sync::mpsc::{self, TryRecvError},
+};
+
+use anyhow::Result;
+
+use crate::{renderer::GameRenderer, shrooms_vb_core::CoreVB};
+
+pub struct Emulator {
+    sim: CoreVB,
+    commands: mpsc::Receiver<EmulatorCommand>,
+    renderer: Option<GameRenderer>,
+}
+
+impl Emulator {
+    pub fn new() -> (Self, EmulatorClient) {
+        let (sink, source) = mpsc::channel();
+        let emu = Emulator {
+            sim: CoreVB::new(),
+            commands: source,
+            renderer: None,
+        };
+        let queue = EmulatorClient { queue: sink };
+        (emu, queue)
+    }
+
+    pub fn load_rom(&mut self, path: &Path) -> Result<()> {
+        let bytes = fs::read(path)?;
+        self.sim.load_rom(bytes)?;
+        Ok(())
+    }
+
+    pub fn run(&mut self) {
+        let mut eye_contents = vec![0u8; 384 * 224 * 2];
+        loop {
+            self.sim.emulate_frame();
+            if let Some(renderer) = &mut self.renderer {
+                if self.sim.read_pixels(&mut eye_contents) {
+                    renderer.render(&eye_contents);
+                }
+            }
+            loop {
+                match self.commands.try_recv() {
+                    Ok(command) => self.handle_command(command),
+                    Err(TryRecvError::Empty) => {
+                        break;
+                    }
+                    Err(TryRecvError::Disconnected) => {
+                        return;
+                    }
+                }
+            }
+        }
+    }
+
+    fn handle_command(&mut self, command: EmulatorCommand) {
+        match command {
+            EmulatorCommand::SetRenderer(renderer) => {
+                self.renderer = Some(renderer);
+            }
+            EmulatorCommand::PressStart => {
+                self.sim.set_keys(0x1003);
+            }
+            EmulatorCommand::ReleaseStart => {
+                self.sim.set_keys(0x0003);
+            }
+        }
+    }
+}
+
+#[derive(Debug)]
+pub enum EmulatorCommand {
+    SetRenderer(GameRenderer),
+    PressStart,
+    ReleaseStart,
+}
+
+pub struct EmulatorClient {
+    queue: mpsc::Sender<EmulatorCommand>,
+}
+
+impl EmulatorClient {
+    pub fn send_command(&self, command: EmulatorCommand) {
+        if let Err(err) = self.queue.send(command) {
+            eprintln!(
+                "could not send command {:?} as emulator is shut down",
+                err.0
+            );
+        }
+    }
+}

src/main.rs

@@ -0,0 +1,32 @@
+use std::{path::PathBuf, thread};
+
+use anyhow::Result;
+use app::App;
+use clap::Parser;
+use emulator::Emulator;
+use winit::event_loop::{ControlFlow, EventLoop};
+
+mod app;
+mod emulator;
+mod renderer;
+mod shrooms_vb_core;
+
+#[derive(Parser)]
+struct Args {
+    rom: PathBuf,
+}
+
+fn main() -> Result<()> {
+    let args = Args::parse();
+
+    let (mut emulator, client) = Emulator::new();
+    emulator.load_rom(&args.rom)?;
+    thread::spawn(move || {
+        emulator.run();
+    });
+
+    let event_loop = EventLoop::new().unwrap();
+    event_loop.set_control_flow(ControlFlow::Poll);
+    event_loop.run_app(&mut App::new(client))?;
+    Ok(())
+}

src/renderer.rs

@@ -0,0 +1,53 @@
+use std::sync::Arc;
+
+use wgpu::{
+    Extent3d, ImageCopyTexture, ImageDataLayout, Origin3d, Queue, Texture, TextureDescriptor,
+    TextureFormat, TextureUsages,
+};
+
+#[derive(Debug)]
+pub struct GameRenderer {
+    pub queue: Arc<Queue>,
+    pub eyes: Arc<Texture>,
+}
+
+impl GameRenderer {
+    pub fn render(&self, buffer: &[u8]) {
+        let texture = ImageCopyTexture {
+            texture: &self.eyes,
+            mip_level: 0,
+            origin: Origin3d::ZERO,
+            aspect: wgpu::TextureAspect::All,
+        };
+        let size = Extent3d {
+            width: 384,
+            height: 224,
+            depth_or_array_layers: 1,
+        };
+        let data_layout = ImageDataLayout {
+            offset: 0,
+            bytes_per_row: Some(384 * 2),
+            rows_per_image: Some(224),
+        };
+        self.queue.write_texture(texture, buffer, data_layout, size);
+    }
+    pub fn create_texture(device: &wgpu::Device, name: &str) -> Texture {
+        let desc = TextureDescriptor {
+            label: Some(name),
+            size: Extent3d {
+                width: 384,
+                height: 224,
+                depth_or_array_layers: 1,
+            },
+            mip_level_count: 1,
+            sample_count: 1,
+            dimension: wgpu::TextureDimension::D2,
+            format: TextureFormat::Rg8Unorm,
+            usage: TextureUsages::COPY_SRC
+                | TextureUsages::COPY_DST
+                | TextureUsages::TEXTURE_BINDING,
+            view_formats: &[TextureFormat::Rg8Unorm],
+        };
+        device.create_texture(&desc)
+    }
+}

src/shrooms_vb_core.rs

@@ -0,0 +1,159 @@
+use std::{ffi::c_void, ptr};
+
+use anyhow::{anyhow, Result};
+
+#[repr(C)]
+struct VB {
+    _data: [u8; 0],
+}
+
+#[allow(non_camel_case_types)]
+type c_int = i32;
+type OnFrame = extern "C" fn(sim: *mut VB) -> c_int;
+
+#[link(name = "vb")]
+extern "C" {
+    #[link_name = "vbEmulate"]
+    fn vb_emulate(sim: *mut VB, cycles: *mut u32) -> c_int;
+    #[link_name = "vbGetCartROM"]
+    fn vb_get_cart_rom(sim: *mut VB, size: *mut u32) -> *mut c_void;
+    #[link_name = "vbGetPixels"]
+    fn vb_get_pixels(
+        sim: *mut VB,
+        left: *mut c_void,
+        left_stride_x: c_int,
+        left_stride_y: c_int,
+        right: *mut c_void,
+        right_stride_x: c_int,
+        right_stride_y: c_int,
+    );
+    #[link_name = "vbGetUserData"]
+    fn vb_get_user_data(sim: *mut VB) -> *mut c_void;
+    #[link_name = "vbInit"]
+    fn vb_init(sim: *mut VB) -> *mut VB;
+    #[link_name = "vbReset"]
+    fn vb_reset(sim: *mut VB);
+    #[link_name = "vbSetCartROM"]
+    fn vb_set_cart_rom(sim: *mut VB, rom: *mut c_void, size: u32) -> c_int;
+    #[link_name = "vbSetKeys"]
+    fn vb_set_keys(sim: *mut VB, keys: u16) -> u16;
+    #[link_name = "vbSetFrameCallback"]
+    fn vb_set_frame_callback(sim: *mut VB, on_frame: OnFrame);
+    #[link_name = "vbSetUserData"]
+    fn vb_set_user_data(sim: *mut VB, tag: *mut c_void);
+    #[link_name = "vbSizeOf"]
+    fn vb_size_of() -> usize;
+}
+
+extern "C" fn on_frame(sim: *mut VB) -> i32 {
+    // SAFETY: the *mut VB owns its userdata.
+    // There is no way for the userdata to be null or otherwise invalid.
+    let data: &mut VBState = unsafe { &mut *vb_get_user_data(sim).cast() };
+    data.frame_seen = true;
+    1
+}
+
+struct VBState {
+    frame_seen: bool,
+}
+
+pub struct CoreVB {
+    sim: *mut VB,
+}
+
+// SAFETY: the memory pointed to by sim is valid
+unsafe impl Send for CoreVB {}
+
+impl CoreVB {
+    pub fn new() -> Self {
+        // init the VB instance itself
+        let size = unsafe { vb_size_of() };
+        // allocate a vec of u64 so that this memory is 8-byte aligned
+        let memory = vec![0u64; size.div_ceil(4)];
+        let sim: *mut VB = Box::into_raw(memory.into_boxed_slice()).cast();
+        unsafe { vb_init(sim) };
+        unsafe { vb_reset(sim) };
+
+        // set up userdata
+        let state = VBState { frame_seen: false };
+        unsafe { vb_set_user_data(sim, Box::into_raw(Box::new(state)).cast()) };
+        unsafe { vb_set_frame_callback(sim, on_frame) };
+
+        CoreVB { sim }
+    }
+
+    pub fn load_rom(&mut self, rom: Vec<u8>) -> Result<()> {
+        self.unload_rom();
+
+        let size = rom.len() as u32;
+        let rom = Box::into_raw(rom.into_boxed_slice()).cast();
+        let status = unsafe { vb_set_cart_rom(self.sim, rom, size) };
+        if status == 0 {
+            Ok(())
+        } else {
+            let _: Vec<u8> =
+                unsafe { Vec::from_raw_parts(rom.cast(), size as usize, size as usize) };
+            Err(anyhow!("Invalid ROM size of {} bytes", size))
+        }
+    }
+
+    fn unload_rom(&mut self) -> Option<Vec<u8>> {
+        let mut size = 0;
+        let rom = unsafe { vb_get_cart_rom(self.sim, &mut size) };
+        if rom.is_null() {
+            return None;
+        }
+        unsafe { vb_set_cart_rom(self.sim, ptr::null_mut(), 0) };
+        let vec = unsafe { Vec::from_raw_parts(rom.cast(), size as usize, size as usize) };
+        Some(vec)
+    }
+
+    pub fn emulate_frame(&mut self) {
+        let mut cycles = 20_000_000;
+        unsafe { vb_emulate(self.sim, &mut cycles) };
+    }
+
+    pub fn read_pixels(&mut self, buffers: &mut [u8]) -> bool {
+        // SAFETY: the *mut VB owns its userdata.
+        // There is no way for the userdata to be null or otherwise invalid.
+        let data: &mut VBState = unsafe { &mut *vb_get_user_data(self.sim).cast() };
+        if !data.frame_seen {
+            return false;
+        }
+        data.frame_seen = false;
+
+        // the buffer must be big enough for our data
+        assert!(buffers.len() >= 384 * 224 * 2);
+        unsafe {
+            vb_get_pixels(
+                self.sim,
+                buffers.as_mut_ptr().cast(),
+                2,
+                384 * 2,
+                buffers.as_mut_ptr().offset(1).cast(),
+                2,
+                384 * 2,
+            );
+        };
+        true
+    }
+
+    pub fn set_keys(&mut self, keys: u16) {
+        unsafe { vb_set_keys(self.sim, keys) };
+    }
+}
+
+impl Drop for CoreVB {
+    fn drop(&mut self) {
+        // SAFETY: the *mut VB owns its userdata.
+        // There is no way for the userdata to be null or otherwise invalid.
+        let ptr: *mut VBState = unsafe { vb_get_user_data(self.sim).cast() };
+        // SAFETY: we made this pointer ourselves, we can for sure free it
+        unsafe { drop(Box::from_raw(ptr)) };
+
+        let len = unsafe { vb_size_of() }.div_ceil(4);
+        // SAFETY: the sim's memory originally came from a Vec<u64>
+        let bytes: Vec<u64> = unsafe { Vec::from_raw_parts(self.sim.cast(), len, len) };
+        drop(bytes);
+    }
+}

ui.c

@@ -1,218 +0,0 @@
-#include "audio.h"
-#include "controller.h"
-#include "emulation.h"
-#include "external/tinyfiledialogs.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include "ui.h"
-#include "window.h"
-
-struct UIContext {
-    EmulationContext emu;
-    WindowContext win;
-    AudioContext aud;
-    ControllerState ctrl;
-};
-
-UIContext *uiInit() {
-    UIContext *ui = malloc(sizeof(UIContext));
-    if (emuInit(&ui->emu)) {
-        goto destroy_ui;
-    }
-    if (windowInit(&ui->win, "Shrooms VB")) {
-        goto destroy_emu;
-    }
-    if (audioInit(&ui->aud)) {
-        goto destroy_window;
-    }
-    ctrlInit(&ui->ctrl);
-    return ui;
-
-destroy_window:
-    windowDestroy(&ui->win);
-destroy_emu:
-    emuDestroy(&ui->emu);
-destroy_ui:
-    free(ui);
-    return NULL;
-}
-
-void uiDestroy(UIContext *ui) {
-    audioDestroy(&ui->aud);
-    windowDestroy(&ui->win);
-    emuDestroy(&ui->emu);
-    free(ui);
-}
-
-int uiLoadGame(UIContext *ui, const char *path) {
-    FILE *file = fopen(path, "rb");
-    uint8_t *rom = NULL;
-    long fileSize;
-    uint32_t romSize;
-    int result;
-
-    if (!file) {
-        perror("could not open file");
-        return -1;
-    }
-
-    if (fseek(file, 0, SEEK_END)) {
-        perror("could not seek file end");
-        goto close_file;
-    }
-    fileSize = ftell(file);
-    if (fileSize == -1) {
-        perror("could not read file size");
-        goto close_file;
-    }
-    if (fseek(file, 0, SEEK_SET)) {
-        perror("could not seek file start");
-        goto close_file;
-    }
-    romSize = (uint32_t) fileSize;
-
-    rom = malloc(romSize);
-    if (!rom) {
-        perror("could not allocate ROM");
-        goto close_file;
-    }
-    fread(rom, 1, romSize, file);
-    if (ferror(file)) {
-        perror("could not read file");
-        goto free_rom;
-    }
-    result = fclose(file);
-    file = NULL;
-    if (result) {
-        perror("could not close file");
-        goto free_rom;
-    }
-
-    emuLoadGame(&ui->emu, rom, romSize);
-    return 0;
-
-free_rom:
-    free(rom);
-close_file:
-    if (file) fclose(file);
-    return -1;
-}
-
-static const char *MENU_ITEMS[4] = {
-    "File",
-    "Emulation",
-    "Video",
-    NULL
-};
-
-static const char *ROM_EXTENSIONS[2] = {
-    "*.vb",
-    NULL
-};
-
-typedef enum status_t {
-    status_paused,
-    status_running
-} status_t;
-
-int uiRun(UIContext *ui, bool running) {
-    static uint8_t leftEye[384*224] = {0};
-    static uint8_t rightEye[384*224] = {0};
-    status_t status = running ? status_running : status_paused;
-    windowUpdate(&ui->win, leftEye, rightEye);
-
-    while (1) {
-        struct nk_context *ctx;
-        SDL_Event event;
-        void *samples;
-        uint32_t bytes;
-        ctx = ui->win.nk;
-
-        if (status == status_running) {
-            emuTick(&ui->emu);
-        }
-
-        if (emuReadPixels(&ui->emu, leftEye, rightEye)) {
-            windowUpdate(&ui->win, leftEye, rightEye);
-        }
-        emuReadSamples(&ui->emu, &samples, &bytes);
-        if (bytes) {
-            audioUpdate(&ui->aud, samples, bytes);
-        }
-
-        windowDisplayBegin(&ui->win);
-        /* GUI */
-        if (windowGuiBegin(&ui->win, "Shrooms VB")) {
-            windowMenubarBegin(&ui->win, MENU_ITEMS);
-
-            if (windowMenuBegin(&ui->win, "File", 100)) {
-                if (windowMenuItemLabel(&ui->win, "Open ROM")) {
-                    char *file = tinyfd_openFileDialog("Pick a ROM", NULL, 1, ROM_EXTENSIONS, "Virtual Boy ROM files", false);
-                    if (file) {
-                        uiLoadGame(ui, file);
-                        status = status_running;
-                    }
-                }
-                if (windowMenuItemLabel(&ui->win, "Quit")) {
-                    SDL_Event QuitEvent;
-                    QuitEvent.type = SDL_QUIT;
-                    QuitEvent.quit.timestamp = SDL_GetTicks();
-                    SDL_PushEvent(&QuitEvent);
-                }
-                windowMenuEnd(&ui->win);
-            }
-
-            if (windowMenuBegin(&ui->win, "Emulation", 100)) {
-                const char *label = status == status_paused ? "Resume" : "Pause";
-                if (windowMenuItemLabel(&ui->win, label)) {
-                    if (status == status_paused)
-                        status = status_running;
-                    else
-                        status = status_paused;
-                }
-                if (windowMenuItemLabel(&ui->win, "Reset")) {
-                    emuReset(&ui->emu);
-                    status = emuIsGameLoaded(&ui->emu) ? status_running : status_paused;
-                }
-                windowMenuEnd(&ui->win);
-            }
-
-            if (windowMenuBegin(&ui->win, "Video", 100)) {
-                float multiplier = windowGetScreenSizeMultiplier(&ui->win);
-                if (windowMenuItemLabelChecked(&ui->win, "x1", multiplier == 1.0f)) {
-                    windowSetScreenSizeMultiplier(&ui->win, 1.0f);
-                }
-                if (windowMenuItemLabelChecked(&ui->win, "x2", multiplier == 2.0f)) {
-                    windowSetScreenSizeMultiplier(&ui->win, 2.0f);
-                }
-                if (windowMenuItemLabelChecked(&ui->win, "x3", multiplier == 3.0f)) {
-                    windowSetScreenSizeMultiplier(&ui->win, 3.0f);
-                }
-                if (windowMenuItemLabelChecked(&ui->win, "x4", multiplier == 4.0f)) {
-                    windowSetScreenSizeMultiplier(&ui->win, 4.0f);
-                }
-                windowMenuEnd(&ui->win);
-            }
-
-            windowMenubarEnd(&ui->win);
-        }
-        windowGuiEnd(&ui->win);
-        windowDisplayEnd(&ui->win);
-
-        nk_input_begin(ctx);
-        while (SDL_PollEvent(&event)) {
-            nk_sdl_handle_event(&event);
-            if (event.type == SDL_QUIT) {
-                return 0;
-            }
-            if (event.type == SDL_KEYDOWN) {
-                ctrlKeyDown(&ui->ctrl, event.key.keysym.sym);
-            }
-            if (event.type == SDL_KEYUP) {
-                ctrlKeyUp(&ui->ctrl, event.key.keysym.sym);
-            }
-        }
-        nk_input_end(ctx);
-        emuSetKeys(&ui->emu, ctrlKeys(&ui->ctrl));
-    }
-}

ui.h

@@ -1,13 +0,0 @@
-#ifndef SHROOMS_VB_NATIVE_UI_
-#define SHROOMS_VB_NATIVE_UI_
-
-#include <stdbool.h>
-
-typedef struct UIContext UIContext;
-
-UIContext *uiInit();
-void uiDestroy(UIContext *ui);
-int uiLoadGame(UIContext *ui, const char *path);
-int uiRun(UIContext *ui, bool running);
-
-#endif

window.c

@@ -1,291 +0,0 @@
-#include "assets.h"
-#include "nuklear.h"
-#include <string.h>
-#include "window.h"
-
-#define MENU_HEIGHT 20
-#define SCREEN_WIDTH 384
-#define SCREEN_HEIGHT 224
-
-static void setColorTable(struct nk_color *table) {
-    table[NK_COLOR_TEXT] = nk_rgb(40, 40, 40);
-    table[NK_COLOR_WINDOW] = nk_rgb(255, 255, 255);
-    table[NK_COLOR_HEADER] = nk_rgb(40, 40, 40);
-    table[NK_COLOR_BORDER] = nk_rgb(175, 175, 175);
-    table[NK_COLOR_BUTTON] = nk_rgb(255, 255, 255);
-    table[NK_COLOR_BUTTON_HOVER] = nk_rgb(215, 215, 215);
-    table[NK_COLOR_BUTTON_ACTIVE] = nk_rgb(175, 175, 175);
-    table[NK_COLOR_TOGGLE] = nk_rgb(100, 100, 100);
-    table[NK_COLOR_TOGGLE_HOVER] = nk_rgb(120, 120, 120);
-    table[NK_COLOR_TOGGLE_CURSOR] = nk_rgb(45, 45, 45);
-    table[NK_COLOR_SELECT] = nk_rgb(45, 45, 45);
-    table[NK_COLOR_SELECT_ACTIVE] = nk_rgb(35, 35, 35);
-    table[NK_COLOR_SLIDER] = nk_rgb(38, 38, 38);
-    table[NK_COLOR_SLIDER_CURSOR] = nk_rgb(100, 100, 100);
-    table[NK_COLOR_SLIDER_CURSOR_HOVER] = nk_rgb(120, 120, 120);
-    table[NK_COLOR_SLIDER_CURSOR_ACTIVE] = nk_rgb(150, 150, 150);
-    table[NK_COLOR_PROPERTY] = nk_rgb(38, 38, 38);
-    table[NK_COLOR_EDIT] = nk_rgb(38, 38, 38);
-    table[NK_COLOR_EDIT_CURSOR] = nk_rgb(175, 175, 175);
-    table[NK_COLOR_COMBO] = nk_rgb(45, 45, 45);
-    table[NK_COLOR_CHART] = nk_rgb(120, 120, 120);
-    table[NK_COLOR_CHART_COLOR] = nk_rgb(45, 45, 45);
-    table[NK_COLOR_CHART_COLOR_HIGHLIGHT] = nk_rgb(255, 0, 0);
-    table[NK_COLOR_SCROLLBAR] = nk_rgb(40, 40, 40);
-    table[NK_COLOR_SCROLLBAR_CURSOR] = nk_rgb(100, 100, 100);
-    table[NK_COLOR_SCROLLBAR_CURSOR_HOVER] = nk_rgb(120, 120, 120);
-    table[NK_COLOR_SCROLLBAR_CURSOR_ACTIVE] = nk_rgb(150, 150, 150);
-    table[NK_COLOR_TAB_HEADER] = nk_rgb(40, 40, 40);
-    table[NK_COLOR_KNOB] = nk_rgb(38, 38, 38);
-    table[NK_COLOR_KNOB_CURSOR] = nk_rgb(100, 100, 100);
-    table[NK_COLOR_KNOB_CURSOR_HOVER] = nk_rgb(120, 120, 120);
-    table[NK_COLOR_KNOB_CURSOR_ACTIVE] = nk_rgb(150, 150, 150);
-}
-
-static void applyStyles(struct nk_context *ctx, float scaleX, float scaleY) {
-    struct nk_color table[NK_COLOR_COUNT];
-    setColorTable(table);
-    nk_style_from_table(ctx, table);
-    ctx->style.window.padding = nk_vec2(0, 0);
-    ctx->style.window.spacing = nk_vec2(0, 0);
-    ctx->style.window.menu_padding = nk_vec2(0, 0);
-    ctx->style.window.menu_border = 0;
-
-    ctx->style.menu_button.hover = nk_style_item_color(table[NK_COLOR_BUTTON_HOVER]);
-    ctx->style.menu_button.active = nk_style_item_color(table[NK_COLOR_BUTTON_ACTIVE]);
-    ctx->style.menu_button.padding = nk_vec2(2 * scaleX, 2 * scaleY);
-    ctx->style.contextual_button.padding = nk_vec2(20 * scaleX, 4 * scaleY);
-}
-
-/* scale the window for High-DPI displays */
-static void scaleWindow(WindowContext *win) {
-    int renderW, renderH;
-    int oldWindowX, oldWindowY;
-    int newWindowX, newWindowY;
-    int oldWindowW, oldWindowH;
-    int newWindowW, newWindowH;
-    float scaleX, scaleY;
-    float hdpi, vdpi;
-    SDL_GetRendererOutputSize(win->renderer, &renderW, &renderH);
-    SDL_GetWindowPosition(win->window, &oldWindowX, &oldWindowY);
-    SDL_GetWindowSize(win->window, &oldWindowW, &oldWindowH);
-    SDL_GetDisplayDPI(SDL_GetWindowDisplayIndex(win->window), NULL, &hdpi, &vdpi);
-    scaleX = (float)(renderW) / (float)(oldWindowW);
-    scaleY = (float)(renderH) / (float)(oldWindowH);
-    win->screenScaleX = (hdpi / 96) * scaleX;
-    win->screenScaleY = (vdpi / 96) * scaleY;
-
-    newWindowW = SCREEN_WIDTH * win->screenSizeMultiplier * (hdpi / 96) / scaleX;
-    newWindowH = (SCREEN_HEIGHT * win->screenSizeMultiplier + MENU_HEIGHT) * (vdpi / 96) / scaleY;
-    newWindowX = oldWindowX - (newWindowW - oldWindowW) / 2;
-    newWindowY = oldWindowY - (newWindowH - oldWindowH) / 2;
-    if (newWindowX < 0) newWindowX = 0;
-    if (newWindowY < 0) newWindowY = 0;
-    SDL_SetWindowSize(win->window, newWindowW, newWindowH);
-    SDL_SetWindowPosition(win->window, newWindowX, newWindowY);
-}
-
-int windowInit(WindowContext *win, const char *title) {
-    win->screenSizeMultiplier = 1.0f;
-
-    win->window = SDL_CreateWindow(title,
-        SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
-        SCREEN_WIDTH, SCREEN_HEIGHT + MENU_HEIGHT, SDL_WINDOW_SHOWN | SDL_WINDOW_ALLOW_HIGHDPI);
-    if (!win->window) {
-        fprintf(stderr, "Error creating window: %s\n", SDL_GetError());
-        return -1;
-    }
-
-    win->renderer = SDL_CreateRenderer(win->window, -1, 0);
-    if (!win->renderer) {
-        fprintf(stderr, "Error creating renderer: %s\n", SDL_GetError());
-        goto cleanup_window;
-    }
-
-    win->leftEye = SDL_CreateTexture(win->renderer, SDL_PIXELFORMAT_RGB24, SDL_TEXTUREACCESS_STREAMING, 384, 224);
-    if (!win->leftEye) {
-        fprintf(stderr, "Error creating left eye texture: %s\n", SDL_GetError());
-        goto cleanup_renderer;
-    }
-    SDL_SetTextureColorMod(win->leftEye, 0xff, 0, 0);
-
-    win->rightEye = SDL_CreateTexture(win->renderer, SDL_PIXELFORMAT_RGB24, SDL_TEXTUREACCESS_STREAMING, 384, 224);
-    if (!win->rightEye) {
-        fprintf(stderr, "Error creating right eye texture: %s\n", SDL_GetError());
-        goto cleanup_left_eye;
-    }
-    SDL_SetTextureColorMod(win->rightEye, 0, 0xc6, 0xf0);
-    SDL_SetTextureBlendMode(win->rightEye, SDL_BLENDMODE_ADD);
-
-    scaleWindow(win);
-
-    win->nk = nk_sdl_init(win->window, win->renderer);
-    applyStyles(win->nk, win->screenScaleX, win->screenScaleY);
-    /* tell nuklear the mouse moved somewhere so it doesn't think we're hovering in the top left */
-    nk_input_motion(win->nk, 1024, 1024);
-
-    {
-        struct nk_font_atlas *atlas;
-        struct nk_font_config config = nk_font_config(0);
-        config.pixel_snap = 1;
-        config.oversample_h = 8;
-        config.oversample_v = 8;
-        
-        nk_sdl_font_stash_begin(&atlas);
-        win->font = nk_font_atlas_add_from_memory(atlas, (void*) SELAWIK, SELAWIK_LEN, 13 * win->screenScaleY, &config);
-        nk_sdl_font_stash_end();
-
-        nk_style_set_font(win->nk, &win->font->handle);
-    }
-
-    return 0;
-
-cleanup_left_eye:
-    SDL_DestroyTexture(win->leftEye);
-cleanup_renderer:
-    SDL_DestroyRenderer(win->renderer);
-cleanup_window:
-    SDL_DestroyWindow(win->window);
-    return -1;
-}
-
-void windowDestroy(WindowContext *win) {
-    SDL_DestroyTexture(win->rightEye);
-    SDL_DestroyTexture(win->leftEye);
-    SDL_DestroyRenderer(win->renderer);
-    SDL_DestroyWindow(win->window);
-}
-
-float windowGetScreenSizeMultiplier(WindowContext *win) {
-    return win->screenSizeMultiplier;
-}
-
-void windowSetScreenSizeMultiplier(WindowContext *win, float multiplier) {
-    win->screenSizeMultiplier = multiplier;
-    scaleWindow(win);
-    applyStyles(win->nk, win->screenScaleX, win->screenScaleY);
-}
-
-static void copyScreenTexture(uint8_t *dst, const uint8_t *src, int pitch) {
-    int x, y, i;
-    uint8_t color;
-    int delta = pitch / 384;
-    for (y = 0; y < 224; ++y) {
-        for (x = 0; x < 384; x += 1) {
-            color = src[(y * 384) + x];
-            for (i = 0; i < delta; ++i) {
-                dst[(y * pitch) + (x * delta) + i] = color;
-            }
-        }
-    }
-}
-
-static void updateEye(SDL_Texture *eye, const uint8_t *bytes) {
-    void *target;
-    int pitch;
-    if (SDL_LockTexture(eye, NULL, &target, &pitch)) {
-        fprintf(stderr, "Error locking buffer for eye: %s\n", SDL_GetError());
-        return;
-    }
-    copyScreenTexture(target, bytes, pitch);
-    SDL_UnlockTexture(eye);
-}
-
-void windowUpdate(WindowContext *win, const uint8_t *left, const uint8_t *right) {
-    updateEye(win->leftEye, left);
-    updateEye(win->rightEye, right);
-}
-
-int windowScaleX(WindowContext *win, int x) {
-    return x * win->screenScaleX;
-}
-
-int windowScaleY(WindowContext *win, int y) {
-    return y * win->screenScaleY;
-}
-
-int windowGetMenuHeight(WindowContext *win) {
-    return (MENU_HEIGHT + 2) * win->screenScaleY;
-}
-
-int windowGetScreenHeight(WindowContext *win) {
-    return SCREEN_HEIGHT * win->screenSizeMultiplier * win->screenScaleY;
-}
-
-void windowDisplayBegin(WindowContext *win) {
-    SDL_Rect dst;
-    dst.x = 0;
-    dst.y = MENU_HEIGHT * win->screenScaleY;
-    dst.w = SCREEN_WIDTH * win->screenSizeMultiplier * win->screenScaleX;
-    dst.h = SCREEN_HEIGHT * win->screenSizeMultiplier * win->screenScaleY;
-
-    SDL_RenderClear(win->renderer);
-    SDL_RenderCopy(win->renderer, win->leftEye, NULL, &dst);
-    SDL_RenderCopy(win->renderer, win->rightEye, NULL, &dst);
-}
-
-void windowDisplayEnd(WindowContext *win) {
-    nk_sdl_render(NK_ANTI_ALIASING_ON);
-    SDL_RenderPresent(win->renderer);
-}
-
-bool windowGuiBegin(WindowContext *win, const char *title) {
-    return nk_begin(win->nk, title,
-        nk_rect(0, 0, SCREEN_WIDTH * win->screenSizeMultiplier * win->screenScaleX, MENU_HEIGHT * win->screenScaleY),
-        NK_WINDOW_NO_SCROLLBAR | NK_WINDOW_BACKGROUND);
-}
-
-void windowGuiEnd(WindowContext *win) {
-    nk_end(win->nk);
-}
-
-void windowMenubarBegin(WindowContext *win, const char **items) {
-    const char **item;
-    nk_menubar_begin(win->nk);
-    nk_layout_row_template_begin(win->nk, MENU_HEIGHT * win->screenScaleY);
-    for (item = items; *item != NULL; item++) {
-        struct nk_user_font *handle;
-        int len;
-        float width;
-        handle = &win->font->handle;
-        len = nk_strlen(*item);
-        width = handle->width(handle->userdata, handle->height, *item, len) + (16 * win->screenScaleX);
-        nk_layout_row_template_push_static(win->nk, width);
-    }
-    nk_layout_row_template_end(win->nk);
-}
-
-void windowMenubarEnd(WindowContext *win) {
-    nk_menubar_end(win->nk);
-}
-
-bool windowMenuBegin(WindowContext *win, const char *label, int width) {
-    if (!nk_menu_begin_label(win->nk, label, NK_TEXT_ALIGN_CENTERED, nk_vec2(windowScaleX(win, width), windowGetScreenHeight(win)))) {
-        return false;
-    }
-    nk_layout_row_dynamic(win->nk, windowGetMenuHeight(win), 1);
-    return true;
-}
-
-void windowMenuEnd(WindowContext *win) {
-    nk_menu_end(win->nk);
-}
-
-bool windowMenuItemLabel(WindowContext *win, const char *label) {
-    return nk_menu_item_label(win->nk, label, NK_TEXT_ALIGN_LEFT);
-}
-
-bool windowMenuItemLabelChecked(WindowContext *win, const char *label, bool checked) {
-    char buffer[80];
-    bool result;
-    if (!checked) {
-        return windowMenuItemLabel(win, label);
-    }
-    strcpy(buffer, "  *  ");
-    strncpy(buffer + 5, label, 74);
-    buffer[79] = '\0';
-    nk_style_push_vec2(win->nk, &win->nk->style.contextual_button.padding, nk_vec2(4 * win->screenScaleX, 4 * win->screenScaleY));
-    result = nk_menu_item_label(win->nk, buffer, NK_TEXT_ALIGN_LEFT);
-    nk_style_pop_vec2(win->nk);
-    return result;
-}

window.h

@@ -1,41 +0,0 @@
-#ifndef SHROOMS_VB_NATIVE_WINDOW_
-#define SHROOMS_VB_NATIVE_WINDOW_
-
-#include <SDL2/SDL.h>
-#include "nuklear.h"
-
-typedef struct WindowContext {
-    SDL_Window *window;
-    float screenSizeMultiplier;
-    float screenScaleX, screenScaleY;
-    SDL_Renderer *renderer;
-    SDL_Texture *leftEye;
-    SDL_Texture *rightEye;
-    struct nk_context *nk;
-    struct nk_font *font;
-} WindowContext;
-
-int windowInit(WindowContext *win, const char *title);
-void windowDestroy(WindowContext *win);
-
-float windowGetScreenSizeMultiplier(WindowContext *win);
-void windowSetScreenSizeMultiplier(WindowContext *win, float multiplier);
-void windowUpdate(WindowContext *win, const uint8_t *left, const uint8_t *right);
-
-int windowScaleX(WindowContext *win, int x);
-int windowScaleY(WindowContext *win, int y);
-int windowGetMenuHeight(WindowContext *win);
-int windowGetScreenHeight(WindowContext *win);
-
-void windowDisplayBegin(WindowContext *win);
-void windowDisplayEnd(WindowContext *win);
-bool windowGuiBegin(WindowContext *win, const char *title);
-void windowGuiEnd(WindowContext *win);
-void windowMenubarBegin(WindowContext *win, const char **items);
-void windowMenubarEnd(WindowContext *win);
-bool windowMenuBegin(WindowContext *win, const char *label, int width);
-void windowMenuEnd(WindowContext *win);
-bool windowMenuItemLabel(WindowContext *win, const char *label);
-bool windowMenuItemLabelChecked(WindowContext *win, const char *label, bool checked);
-
-#endif