WIP basisu

.vscode/launch.json

@@ -8,7 +8,7 @@
             "name": "(Windows) Launch",
             "type": "cppvsdbg",
             "request": "launch",
-            "program": "${workspaceFolder}/zig-out/bin/vrm1.exe",
+            "program": "${workspaceFolder}/zig-out/bin/basisu.exe",
             "args": [],
             "stopAtEntry": false,
             "cwd": "${workspaceFolder}/zig-out/web",

deps/sokol_samples/build.zig

@@ -212,6 +212,10 @@ pub const samples = [_]Sample{
         .name = "draco",
         .root_source_file = "extensions/draco/main.zig",
     },
+    .{
+        .name = "basisu",
+        .root_source_file = "extensions/basisu/main.zig",
+    },
     .{
         .name = "vrm0",
         .root_source_file = "extensions/vrm0/main.zig",

deps/sokol_samples/extensions/basisu/main.zig

@@ -0,0 +1,136 @@
+const std = @import("std");
+const sokol = @import("sokol");
+const sg = sokol.gfx;
+
+const zigltf = @import("zigltf");
+const rowmath = @import("rowmath");
+const framework = @import("framework");
+const Scene = framework.Scene;
+const gltf_fetcher = framework.gltf_fetcher;
+
+const state = struct {
+    var pass_action = sg.PassAction{};
+    var input = rowmath.InputState{};
+    var orbit = rowmath.OrbitCamera{};
+    var gltf: ?std.json.Parsed(zigltf.Gltf) = null;
+    var scene = Scene{};
+};
+
+const load_file = "glTF-Sample-Assets/Models/StainedGlassLamp/glTF-KTX-BasisU/StainedGlassLamp.gltf";
+
+export fn init() void {
+    sg.setup(.{
+        .environment = sokol.glue.environment(),
+        .logger = .{ .func = sokol.log.func },
+    });
+    sokol.gl.setup(.{
+        .logger = .{ .func = sokol.log.func },
+    });
+
+    var debugtext_desc = sokol.debugtext.Desc{
+        .logger = .{ .func = sokol.log.func },
+    };
+    debugtext_desc.fonts[0] = sokol.debugtext.fontOric();
+    sokol.debugtext.setup(debugtext_desc);
+
+    state.pass_action.colors[0] = .{
+        .load_action = .CLEAR,
+        .clear_value = .{ .r = 0.1, .g = 0.1, .b = 0.1, .a = 1.0 },
+    };
+
+    state.scene.init(std.heap.c_allocator);
+
+    gltf_fetcher.init(std.heap.c_allocator);
+    gltf_fetcher.fetch_gltf(load_file, &on_gltf) catch @panic("fetch_gltf");
+}
+
+fn on_gltf(gltf: std.json.Parsed(zigltf.Gltf), bin: std.StringHashMap([]const u8)) void {
+    state.gltf = gltf;
+    std.debug.print("{s}\n", .{gltf.value});
+    state.scene.load(gltf, bin) catch |e| {
+        std.debug.print("{s}\n", .{@errorName(e)});
+        @panic("Scene.load");
+    };
+    gltf_fetcher.state.status = "loaded";
+}
+
+export fn frame() void {
+    sokol.fetch.dowork();
+
+    state.input.screen_width = sokol.app.widthf();
+    state.input.screen_height = sokol.app.heightf();
+    state.orbit.frame(state.input);
+    state.input.mouse_wheel = 0;
+
+    sokol.debugtext.canvas(sokol.app.widthf() * 0.5, sokol.app.heightf() * 0.5);
+    sokol.debugtext.pos(0.5, 0.5);
+    sokol.debugtext.puts(gltf_fetcher.state.status);
+
+    sg.beginPass(.{
+        .action = state.pass_action,
+        .swapchain = sokol.glue.swapchain(),
+    });
+    state.scene.draw(state.orbit.camera);
+    sokol.debugtext.draw();
+    sg.endPass();
+    sg.commit();
+}
+
+export fn event(e: [*c]const sokol.app.Event) void {
+    switch (e.*.type) {
+        .MOUSE_DOWN => {
+            switch (e.*.mouse_button) {
+                .LEFT => {
+                    state.input.mouse_left = true;
+                },
+                .RIGHT => {
+                    state.input.mouse_right = true;
+                },
+                .MIDDLE => {
+                    state.input.mouse_middle = true;
+                },
+                .INVALID => {},
+            }
+        },
+        .MOUSE_UP => {
+            switch (e.*.mouse_button) {
+                .LEFT => {
+                    state.input.mouse_left = false;
+                },
+                .RIGHT => {
+                    state.input.mouse_right = false;
+                },
+                .MIDDLE => {
+                    state.input.mouse_middle = false;
+                },
+                .INVALID => {},
+            }
+        },
+        .MOUSE_MOVE => {
+            state.input.mouse_x = e.*.mouse_x;
+            state.input.mouse_y = e.*.mouse_y;
+        },
+        .MOUSE_SCROLL => {
+            state.input.mouse_wheel = e.*.scroll_y;
+        },
+        else => {},
+    }
+}
+
+export fn cleanup() void {
+    sg.shutdown();
+}
+
+pub fn main() void {
+    sokol.app.run(.{
+        .init_cb = init,
+        .frame_cb = frame,
+        .cleanup_cb = cleanup,
+        .event_cb = event,
+        .width = 800,
+        .height = 600,
+        .window_title = "rowmath: examples/sokol/camera_simple",
+        .icon = .{ .sokol_default = true },
+        .logger = .{ .func = sokol.log.func },
+    });
+}