saving before stash

engine/core/src/inputs/inputStack.zig

@@ -391,6 +391,8 @@ pub const Binding = union(BindingType) {
                 p.magnitude.x = std.math.clamp(p.magnitude.x, -1.0, 1.0);
                 p.magnitude.y = std.math.clamp(p.magnitude.y, -1.0, 1.0);
 
+                // core.engine_log(" >> {any} > routeBindingEvent magnitude {d} {d}", .{ key, p.magnitude.x, p.magnitude.y });
+
                 // for (p.data.listeners.items) |listener| {
                 //     listener.func(listener.ctx, p.magnitude);
                 // }
@@ -562,11 +564,14 @@ pub const InputStack = struct {
     fn routeKeyEvent(self: *@This(), key: Key, event: ActionEvent) void {
         // for all bindings in reverse order from this layer, route the input, stop the
         // route if the input was consumed
+        // core.engine_log(" >> {any} > routeKeyEvent 1", .{key});
         if (self.active.bindingStack.items.len == 0) {
             return;
         }
+        // core.engine_log(" >> {any} > routeKeyEvent 2", .{key});
 
         var i: i32 = @intCast(self.active.bindingStack.items.len - 1);
+        // core.engine_log(" >> {any} > routeKeyEvent 2 binding count : {d}", .{ key, i });
         while (i >= 0) : (i -= 1) {
             const binding = self.active.bindingStack.items[@intCast(i)];
             var consumed: bool = false;
@@ -597,6 +602,7 @@ pub const InputStack = struct {
             .key => |key| {
                 const keyEvent: ActionEvent = key.action; // @enumFromInt(@as(u8, @intCast(key.action)));
                 if (keyEvent != .keyHeld) {
+                    // core.engine_log("converted: {any}", .{keyEvent});
                     self.routeKeyEvent(key.key, keyEvent);
                 }
             },

engine/platform/src/windowing.zig

@@ -151,6 +151,8 @@ pub const PlatformInstance = struct {
                 else => {},
             }
         }
+
+        inputStack.sendAxisUpdates();
     }
 
     pub fn getCursorPosition(self: *@This()) core.Vector2f {

engine/rend/build.zig

@@ -34,6 +34,7 @@ pub fn build(b: *std.Build) void {
 
     sdl3.shaderDefintion(b, mod, "../../lib/sdl3", optimize, "sample.vert", b.path("shaders/sample.vert.json"));
     sdl3.shaderDefintion(b, mod, "../../lib/sdl3", optimize, "meshes.vert", b.path("shaders/meshes.vert.json"));
+    sdl3.shaderDefintion(b, mod, "../../lib/sdl3", optimize, "lit_mesh.frag", b.path("shaders/lit_mesh.frag.json"));
 
     // ========== tests ==========
     const tests = b.addTest(.{

engine/rend/shaders/lit_mesh.frag.hlsl

@@ -0,0 +1,5 @@
+float4 main(float2 UV : TEXCOORD0) : SV_Target0
+{
+    return float4(UV, 0.0, 1.0);
+}
+

engine/rend/shaders/lit_mesh.frag.json

@@ -0,0 +1,22 @@
+{
+    "entryPoints" : [
+        {
+            "name" : "main",
+            "mode" : "frag"
+        }
+    ],
+    "inputs" : [
+        {
+            "type" : "vec2",
+            "name" : "in.var.TEXCOORD0",
+            "location" : 0
+        }
+    ],
+    "outputs" : [
+        {
+            "type" : "vec4",
+            "name" : "out.var.SV_Target0",
+            "location" : 0
+        }
+    ]
+}

engine/rend/shaders/meshes.vert.hlsl

@@ -13,6 +13,7 @@ struct Input
 struct Output
 {
     float2 TexCoord : TEXCOORD0;
+
     float4 Position : SV_Position;
 };
 
@@ -25,8 +26,8 @@ StructuredBuffer<Scene> scene: register(t0, space0);
 
 cbuffer Uniforms : register(b0, space1)
 {
-    float4x4 ViewProjection;
+    float4x4 ViewProjection : packoffset(c0);
-    float time;
+    float time: packoffset(c16);
 };
 
 Output main(Input input)

engine/rend/shaders/meshes.vert.json

@@ -48,7 +48,7 @@
                 {
                     "name" : "time",
                     "type" : "float",
-                    "offset" : 64
+                    "offset" : 256
                 }
             ]
         }
@@ -86,7 +86,7 @@
         {
             "type" : "_10",
             "name" : "type.Uniforms",
-            "block_size" : 68,
+            "block_size" : 260,
             "set" : 1,
             "binding" : 0
         }

engine/rend/src/camera/CameraComponent.zig

@@ -0,0 +1,96 @@
+fov: f32 = 70.0,
+altFov: f32 = 70.0,
+aspect: f32 = 16.0 / 9.0,
+near_clipping: f32 = 0.1,
+far_clipping: f32 = 10000.0,
+transform: core.Transform = zm.identity(),
+
+worldTransform: Mat = zm.identity(),
+projection: Mat = makePerspective(
+    core.radians(70.0), // angle
+    16.0 / 9.0,
+    0.1,
+    200000,
+),
+projectionAlt: Mat = makePerspective(
+    core.radians(70.0), // angle
+    16.0 / 9.0,
+    0.0001,
+    1000,
+),
+
+yaw: f32 = 0,
+pitch: f32 = 0,
+roll: f32 = 0,
+
+final: Mat = zm.identity(),
+finalAlt: Mat = zm.identity(),
+
+entity: core.Entity = undefined,
+
+pub fn initECS(self: *@This(), handle: core.SetHandle) void {
+    self.entity = core.Entity.fromHandle(handle);
+}
+
+pub fn updateProjections(self: *@This()) core.Transform {
+    self.projection = zm.perspectiveFovRh(core.radians(self.fov), 16.0 / 9.0, 0.1, 200000);
+    self.projection[1][1] *= -1;
+
+    self.projectionAlt = zm.perspectiveFovRh(core.radians(self.altFov), 16.0 / 9.0, 0.01, 200000);
+    self.projectionAlt[1][1] *= -1;
+}
+
+pub fn resolve(self: *@This()) void {
+    const scene = self.entity.get(core.Scene).?;
+
+    const position = scene.getPosition();
+    {
+        var base = core.zm.identity();
+        base = mul(core.zm.rotationY(-self.yaw), base);
+        base = mul(core.zm.rotationX(self.pitch), base);
+        base = mul(core.zm.rotationZ(self.roll), base);
+
+        const pr2 = core.scene.SceneObjectPosRot{
+            .position = position,
+        };
+
+        self.worldTransform = mul(base, pr2.toTransform());
+    }
+
+    // calculate viewProjections
+    {
+        var base = core.zm.rotationY(self.yaw + core.radians(180.0));
+        base = mul(base, core.zm.rotationX(self.pitch));
+        base = mul(base, core.zm.rotationZ(self.roll));
+        self.transform = base;
+
+        self.transform = mul(zm.translationV(position.fmul(-1).toZm()), self.transform);
+        self.final = mul(self.transform, self.projection);
+        self.finalAlt = mul(self.transform, self.projectionAlt);
+    }
+}
+
+fn makePerspective(fov: f32, aspect: f32, near: f32, far: f32) Mat {
+    const proj = core.zm.perspectiveFovRh(
+        core.radians(fov),
+        aspect,
+        near,
+        far,
+    );
+    // proj[1][1] *= -1;
+    return proj;
+}
+
+pub var BaseContainer: *core.SparseMap(@This()) = undefined;
+pub const ComponentName = "Camera";
+
+pub const ScriptExports: []const []const u8 = &.{};
+
+pub const EcsComponentDefinition = ecs.DefineComponent(@This(), .set);
+
+const core = @import("core");
+const ecs = core.ecs;
+const zm = core.zm;
+const mul = zm.mul;
+const Mat = core.Mat;
+const std = @import("std");

engine/rend/src/camera/camera.zig

@@ -0,0 +1,5 @@
+fov: f32 = 70.0,
+altFov: f32 = 70.0,
+aspect: f32 = 16.0 / 9.0,
+near_clipping: f32 = 0.1,
+far_clipping: f32 = 10000.0,

engine/rend/src/meshes/MeshComponent.zig

@@ -5,25 +5,47 @@ visibility: bool = true,
 textureName: core.Name = core.NameInvalid,
 meshName: core.Name = core.NameInvalid,
 
+entity: core.Entity = undefined,
+
 pub var BaseContainer: *MeshSet = undefined;
 pub const ComponentName = "Mesh";
 
 pub const ScriptExports: []const []const u8 = &.{
     "setMesh",
-    "setTextureByName",
+    // "setTexture",
 };
 
-pub fn setMeshByName(self: *@This(), meshName: core.Name) void {
+pub fn initECS(self: *@This(), handle: core.SetHandle) void {
-    self.meshName = meshName;
+    // get the mesh component
+    self.entity = core.Entity{ .handle = handle };
+
+    if (self.entity.get(core.Scene) == null) {
+        @panic("mesh added to something that doesn't have a scene component, not supported");
+    }
+}
+
+pub fn setMeshByName(self: *@This(), meshName: *core.Name) void {
+    self.mesh = rend.getMeshByName(meshName);
+    self.meshName = meshName.*;
 }
 
 // script function
 pub fn setMesh(self: *@This(), meshName: []const u8) void {
-    const name = core.MakeName(meshName);
+    var name = core.MakeName(meshName);
-    self.mesh = rend.getMeshByName(core.MakeName(meshName));
+    self.setMeshByName(&name);
-    self.meshName = name;
 }
 
+// pub fn setTextureByName(self: *@This(), n: []const u8) void {
+//     var name = core.MakeName(n);
+//     self.mesh = rend.getTextureByName(&name);
+//     self.textureName = name;
+// }
+
+// pub fn setTexture(self: *@This(), n: []const u8) void {
+//     var name = core.MakeName(n);
+//     self.textureName = rend.getTextureByName(&name);
+// }
+
 // animator: ?*Animator = null, todo.. implement animator
 pub const MeshSet = core.SparseSet(@This());
 

engine/rend/src/rend.zig

@@ -8,6 +8,10 @@ pub const MeshUpdate = meshes.MeshUpdate;
 pub const MeshVertex = meshes.MeshVertex;
 pub const IndexedMesh = meshes.IndexedMesh;
 
+// components exports
+pub const MeshComponent = @import("meshes/MeshComponent.zig");
+pub const CameraComponent = @import("camera/CameraComponent.zig");
+
 // asset loaders
 pub const gltfLoader = @import("meshes/gltfLoader.zig");
 
@@ -20,6 +24,9 @@ pub const MeshPool = renderer.MeshPool;
 pub const getMesh = renderer.getMesh;
 pub const getMeshByName = renderer.getMeshByName;
 
+// camera API
+pub const setActiveCamera = renderer.setActiveCamera;
+
 var rendAllocator: std.mem.Allocator = undefined;
 pub fn getAllocator() std.mem.Allocator {
     return rendAllocator;
@@ -38,9 +45,14 @@ pub fn start_module(comptime programSpec: anytype, args: anytype, allocator: std
     core.engine_log("starting up renderer interface", .{});
     rendAllocator = allocator;
     try renderer.start();
+
+    try core.defineComponent(MeshComponent, allocator);
+    try core.defineComponent(CameraComponent, allocator);
 }
 
 pub fn shutdown_module(allocator: std.mem.Allocator) void {
+    core.undefineComponent(MeshComponent);
+    core.undefineComponent(CameraComponent);
     _ = allocator;
     renderer.shutdown();
 }

engine/rend/src/sgpu/mesh-pool.zig

@@ -72,6 +72,7 @@ pub const MeshPool = struct {
                     const vertexSpan = try self.addTransfer(copyPass, self.vertexBuffer, meshes.MeshVertex, &self.vertexSpans, new.vertices);
 
                     var name = new.name;
+                    core.graphics_log("uploading {d} vertices and {d} indices", .{ vertexSpan.size, indexSpan.size });
                     try self.installedMeshes.put(self.allocator, name.handle(), .{
                         .vertex = vertexSpan,
                         .index = indexSpan,

engine/rend/src/sgpu/renderer.zig

@@ -14,13 +14,18 @@ pub const Renderer = struct {
     shaderSuffix: []const u8 = undefined,
     shaderformat: gpu.GPUShaderFormat = undefined,
     entrypoint: []const u8 = "main",
-    pipeline: *gpu.GPUGraphicsPipeline = undefined,
+    testPipeline: *gpu.GPUGraphicsPipeline = undefined,
+    meshPipe: *gpu.GPUGraphicsPipeline = undefined,
 
     scissor: gpu.Rect = .{ .x = 0, .y = 0, .w = 1600, .h = 900 },
     colorBuffer: *gpu.GPUBuffer = undefined,
     colorBufferTransfer: *gpu.GPUTransferBuffer = undefined,
     window: *sdl3.Window = undefined,
 
+    activeCamera: ?*rend.CameraComponent = null,
+    ssboScene: *gpu.GPUBuffer = undefined,
+    ssboSceneUpload: *gpu.GPUTransferBuffer = undefined,
+
     meshPool: *MeshPool = undefined,
 
     uploads: std.ArrayListUnmanaged(struct { ptr: *anyopaque, func: *const fn (*anyopaque, *gpu.GPUCopyPass) void }) = .{},
@@ -29,6 +34,8 @@ pub const Renderer = struct {
 
     pub var NeonObjectTable: core.EngineObjectVTable = core.EngineObjectVTable.from(@This());
 
+    pub const MaxObjectCount = 50000;
+
     pub fn init(allocator: std.mem.Allocator) !*@This() {
         const self = try allocator.create(@This());
 
@@ -57,7 +64,7 @@ pub const Renderer = struct {
             .shaderformatSpirv = true,
             .shaderformatDxil = true,
             .shaderformatMsl = true,
-        }, false, null);
+        }, true, null);
 
         self.window = platform.getInstance().window;
 
@@ -69,6 +76,7 @@ pub const Renderer = struct {
         core.engine_log("sgpu device created, using shader format: {s}", .{self.shaderSuffix});
 
         try self.createPipeline();
+        try self.createMeshPipeline();
 
         try self.registerRendererObject(MeshPool);
     }
@@ -92,9 +100,94 @@ pub const Renderer = struct {
         }
     }
 
+    fn addAttribute(list: *std.ArrayList(gpu.GPUVertexAttribute), offset: *u32, size: u32, format: gpu.GPUVertexElementFormat) !void {
+        try list.append(.{ .location = @intCast(list.items.len), .offset = offset.* + size, .format = format, .buffer_slot = 0 });
+        offset.* = offset.* + size;
+    }
+
+    pub fn createMeshPipeline(self: *@This()) !void {
+        const vertex = try self.loadShader("meshes.vert", sample_vert.LoadArgs);
+        const fragment = try self.loadShader("lit_mesh.frag", lit_mesh_frag.LoadArgs);
+
+        var pci = std.mem.zeroes(gpu.GPUGraphicsPipelineCreateInfo);
+        pci.vertex_shader = vertex;
+        pci.fragment_shader = fragment;
+
+        var attributes = std.ArrayList(gpu.GPUVertexAttribute).init(self.allocator);
+        defer attributes.deinit();
+
+        var offset: u32 = 0;
+        {
+            try addAttribute(&attributes, &offset, @sizeOf(f32) * 3, .vertexelementformatFloat3);
+            try addAttribute(&attributes, &offset, @sizeOf(f32) * 3, .vertexelementformatFloat3);
+            try addAttribute(&attributes, &offset, @sizeOf(f32) * 4, .vertexelementformatFloat4);
+            try addAttribute(&attributes, &offset, @sizeOf(f32) * 2, .vertexelementformatFloat2);
+            try addAttribute(&attributes, &offset, @sizeOf(u32), .vertexelementformatUint);
+        }
+
+        pci.vertex_input_state = .{
+            .num_vertex_buffers = 1,
+            .vertex_buffer_descriptions = &[_]gpu.GPUVertexBufferDescription{
+                .{ .slot = 0, .pitch = @sizeOf(rend.MeshVertex), .input_rate = .vertexinputrateVertex, .instance_step_rate = 0 },
+            },
+            .num_vertex_attributes = @intCast(attributes.items.len),
+            .vertex_attributes = @ptrCast(attributes.items.ptr),
+        };
+
+        pci.target_info.num_color_targets = 1;
+        pci.target_info.color_target_descriptions = &[_]gpu.GPUColorTargetDescription{
+            .{
+                .format = self.device.getGPUSwapchainTextureFormat(self.window),
+                .blend_state = std.mem.zeroes(gpu.GPUColorTargetBlendState),
+            },
+        };
+
+        pci.rasterizer_state.fill_mode = .fillmodeFill;
+        self.meshPipe = self.device.createGPUGraphicsPipeline(&pci);
+
+        // ssbo buffer
+
+        // todo.. sparse uploads
+        self.ssboScene = self.device.createGPUBuffer(&.{
+            .usage = .{ .bufferusageGraphicsStorageRead = true },
+            .size = MaxObjectCount * @sizeOf(meshes_vert.Scene),
+            .props = 0,
+        });
+
+        self.ssboSceneUpload = self.device.createGPUTransferBuffer(&.{
+            .usage = .transferbufferusageUpload,
+            .size = MaxObjectCount * @sizeOf(meshes_vert.Scene),
+            .props = 0,
+        });
+    }
+
+    pub fn uploadSSBOs(self: *@This(), copyPass: *gpu.GPUCopyPass) void {
+        const uploadMapped: [*]meshes_vert.Scene = self.device.mapGPUTransferBuffer(self.ssboSceneUpload, true);
+        self.device.unmapGPUTransferBuffer(self.ssboSceneUpload);
+
+        const container = &rend.MeshComponent.BaseContainer;
+        const uploadCount: usize = @min(container.dense.items.len, MaxObjectCount);
+        for (0..uploadCount) |i| {
+            // const object = &container.dense.items[i].value;
+            const objectId = container.dense.items[i].sparseIndex;
+            var transform = core.Transform.identity();
+
+            if (core.Scene.SceneObjectContainer.get(objectId, ._repr)) |repr| {
+                transform = repr.transform;
+            }
+            uploadMapped[i].Model = @bitCast(transform);
+        }
+
+        copyPass.uploadToGPUBuffer(&.{ .transfer_buffer = self.ssboSceneUpload, .offset = 0 }, &.{
+            .buffer = self.ssboScene,
+            .offset = 0,
+            .size = uploadCount * @sizeOf(meshes_vert.Scene),
+        }, true);
+    }
+
     pub fn createPipeline(self: *@This()) !void {
-        const vertex = try self.loadShader("sample.vert", 0, 0, 1, 0);
+        const vertex = try self.loadShader("sample.vert", sample_vert.LoadArgs);
-        const fragment = try self.loadShader("sample.frag", 0, 0, 0, 0);
+        const fragment = try self.loadShader("sample.frag", .{});
 
         var pci = std.mem.zeroes(gpu.GPUGraphicsPipelineCreateInfo);
         pci.fragment_shader = fragment;
@@ -109,7 +202,7 @@ pub const Renderer = struct {
         };
 
         pci.rasterizer_state.fill_mode = .fillmodeFill;
-        self.pipeline = self.device.createGPUGraphicsPipeline(&pci);
+        self.testPipeline = self.device.createGPUGraphicsPipeline(&pci);
 
         self.colorBuffer = self.device.createGPUBuffer(&.{
             .usage = .{ .bufferusageVertex = true },
@@ -127,18 +220,12 @@ pub const Renderer = struct {
     pub fn loadShader(
         self: *@This(),
         shaderName: []const u8,
-        num_samplers: u32, // The number of samplers defined in the shader.
+        loadArgs: ShaderLoadArgs,
-        num_storage_textures: u32, // The number of storage textures defined in the shader.
-        num_storage_buffers: u32, // The number of storage buffers defined in the shader.
-        num_uniform_buffers: u32, // The number of uniform buffers defined in the shader.
     ) !*gpu.GPUShader {
         const contentPath = try std.fmt.allocPrint(self.allocator, "_shaders/{s}/{s}{s}", .{ self.shaderType, shaderName, self.shaderSuffix });
 
         defer self.allocator.free(contentPath);
 
-        const mapping = try core.fs().loadFile(contentPath);
-        defer core.fs().unmap(mapping);
-
         var stage: gpu.GPUShaderStage = undefined;
 
         if (std.mem.endsWith(u8, shaderName, ".vert")) {
@@ -149,21 +236,26 @@ pub const Renderer = struct {
             return error.NotImplemented;
         }
 
+        core.engine_log("creating shader {s} => {s} {any} args: {any}", .{ shaderName, contentPath, stage, loadArgs });
+
+        const mapping = try core.fs().loadFile(contentPath);
+        defer core.fs().unmap(mapping);
+
         const sci = gpu.GPUShaderCreateInfo{
             .code = @ptrCast(mapping.bytes.ptr),
             .entrypoint = @ptrCast(self.entrypoint.ptr),
             .format = self.shaderformat,
             .code_size = mapping.bytes.len - 1,
             .stage = stage,
-            .num_samplers = num_samplers,
+            .num_samplers = loadArgs.num_samplers,
-            .num_storage_textures = num_storage_textures, // The number of storage textures defined in the shader.
+            .num_storage_textures = loadArgs.num_storage_textures, // The number of storage textures defined in the shader.
-            .num_storage_buffers = num_storage_buffers, // The number of storage buffers defined in the shader.
+            .num_storage_buffers = loadArgs.num_storage_buffers, // The number of storage buffers defined in the shader.
-            .num_uniform_buffers = num_uniform_buffers, // The number of uniform buffers defined in the shader.
+            .num_uniform_buffers = loadArgs.num_uniform_buffers, // The number of uniform buffers defined in the shader.
             .props = 0,
         };
 
         const rv = self.device.createGPUShader(&sci);
-        core.engine_log("creating shader {s} => {s} {any}", .{ shaderName, contentPath, stage });
+
         return rv;
     }
 
@@ -179,6 +271,11 @@ pub const Renderer = struct {
 
         self.device.unmapGPUTransferBuffer(self.colorBufferTransfer);
 
+        if (self.activeCamera) |camera| {
+            camera.resolve();
+        }
+        // map and upload Uniforms here
+
         const copyPass = cmd.beginGPUCopyPass();
         defer copyPass.endGPUCopyPass();
         copyPass.uploadToGPUBuffer(&.{ .transfer_buffer = self.colorBufferTransfer, .offset = 0 }, &.{
@@ -190,6 +287,7 @@ pub const Renderer = struct {
         for (self.uploads.items) |upload| {
             upload.func(upload.ptr, copyPass);
         }
+
         if (!cmd.submitGPUCommandBuffer()) {
             core.graphics_log("submit gpu command buffer SDL ERROR: {s}", .{sdl3.getError()});
         }
@@ -214,7 +312,7 @@ pub const Renderer = struct {
             targetInfo.store_op = .storeopStore;
 
             const renderpass = cmd.beginGPURenderPass(&targetInfo, 1, null);
-            renderpass.bindGPUGraphicsPipeline(self.pipeline);
+            renderpass.bindGPUGraphicsPipeline(self.testPipeline);
             renderpass.bindGPUVertexStorageBuffers(0, &self.colorBuffer, 1);
             renderpass.setGPUScissor(&self.scissor);
             renderpass.drawGPUPrimitives(3, 1, 0, 0);
@@ -225,6 +323,8 @@ pub const Renderer = struct {
     }
 
     pub fn deinit(self: *@This()) void {
+        self.device.releaseGPUGraphicsPipeline(self.testPipeline);
+
         for (self.destroys.items) |d| {
             d.func(d.ptr);
         }
@@ -245,11 +345,16 @@ const core = @import("core");
 const platform = @import("platform");
 const sdl3 = @import("sdl3");
 const gpu = sdl3.gpu;
-const SSBO_Scene = @import("sample.vert").Scene;
+
 const meshes_vert = @import("meshes.vert");
+const lit_mesh_frag = @import("lit_mesh.frag");
+const sample_vert = @import("sample.vert");
+
 const MeshVertices = meshes_vert.Scene;
 const MeshUniforms = meshes_vert.Uniforms;
 
+const ShaderLoadArgs = sdl3.shaderTypes.ShaderLoadArgs;
+
 pub const mesh_pool = @import("mesh-pool.zig");
 pub const MeshPool = mesh_pool.MeshPool;
 
@@ -264,6 +369,11 @@ pub fn shutdown() void {}
 pub fn context() *Renderer {
     return gRenderer;
 }
+
+pub fn setActiveCamera(camera: ?*rend.CameraComponent) void {
+    gRenderer.activeCamera = camera;
+}
+
 pub const getMesh = mesh_pool.getMesh;
 pub const getMeshByName = mesh_pool.getMeshByName;
 

lib/sdl3/build.zig

@@ -53,6 +53,12 @@ pub fn build(b: *std.Build) void {
         .root_source_file = b.path("src/sdl3.zig"),
     });
 
+    const shaderTypes = b.dependency("shaderTypes", .{
+        .target = target,
+        .optimize = optimize,
+    });
+    mod.addImport("shaderTypes", shaderTypes.module("shaderTypes"));
+
     mod.addIncludePath(b.path("SDL/include"));
     mod.linkLibrary(sdl3_lib);
 

lib/sdl3/shaderTypes/shaderTypes.zig

@@ -94,15 +94,15 @@ pub const FieldDetail = struct {
 };
 
 pub const ShaderLoadArgs = struct {
-    num_samplers: u32, // The number of samplers defined in the shader.
+    num_samplers: u32 = 0, // The number of samplers defined in the shader.
-    num_storage_textures: u32, // The number of storage textures defined in the shader.
+    num_storage_textures: u32 = 0, // The number of storage textures defined in the shader.
-    num_storage_buffers: u32, // The number of storage buffers defined in the shader.
+    num_storage_buffers: u32 = 0, // The number of storage buffers defined in the shader.
-    num_uniform_buffers: u32, // The number of uniform buffers defined in the shader.
+    num_uniform_buffers: u32 = 0, // The number of uniform buffers defined in the shader.
 };
 
 pub const BufferInfo = union(enum(usize)) {
-    sampler: usize, // sampler
+    sampler: u32, // sampler
-    texture: usize, // storage texture
+    texture: u32, // storage texture
-    storage: usize, // storate buffer object
+    storage: u32, // storate buffer object
-    uniform: usize, // uniform/push constant
+    uniform: u32, // uniform/push constant
 };

lib/sdl3/spvreflect/spvreflect.py

@@ -45,25 +45,27 @@ pub const float = shaderTypes.float;
 pub const BufferInfo = shaderTypes.BufferInfo;
 """
 
-    types = reflect['types']
-
     storageIndex = 0
-    if 'ssbos' in reflect:
-        for ssbo in reflect['ssbos']:
-            zs = parseTypeToZig(types, ssbo['type'], "storage", storageIndex)
-            storageIndex += 1
-            ostring += zs + "\n"
-
     uniformIndex = 0
-    if 'ubos' in reflect:
-        for uniform in reflect['ubos']:
-            zs = parseTypeToZig(types, uniform['type'], "uniform", uniformIndex)
-            ostring += zs + "\n"
-
-    zs = "pub const LoadArgs = shaderTypes.ShaderLoadArgs{"
-
     samplerIndex = 0
     textureIndex = 0
+    if 'types' in reflect:
+
+        types = reflect['types']
+
+        if 'ssbos' in reflect:
+            for ssbo in reflect['ssbos']:
+                zs = parseTypeToZig(types, ssbo['type'], "storage", ssbo['binding'])
+                storageIndex += 1
+                ostring += zs + "\n"
+
+        if 'ubos' in reflect:
+            for uniform in reflect['ubos']:
+                uniformIndex += 1
+                zs = parseTypeToZig(types, uniform['type'], "uniform", uniform['binding'])
+                ostring += zs + "\n"
+
+    zs = "pub const LoadArgs = shaderTypes.ShaderLoadArgs{"
 
     zs += f"""
     .num_samplers = {samplerIndex}, // The number of samplers defined in the shader.

lib/sdl3/src/sdl3.zig

@@ -50,3 +50,4 @@ pub fn getError() [*c]const u8 {
 
 pub const gpu = @import("gpu.zig");
 pub const Scancode = @import("scancode.zig").Scancode;
+pub const shaderTypes = @import("shaderTypes");

lib/tracy/build.zig

@@ -9,7 +9,7 @@ pub fn build(b: *std.Build) void {
 
     //const tracy_enabled = b.option(bool, "tracy", "Enables tracy integration") orelse false;
 
-    const tracy_enabled: bool = true; //if (b.graph.env_map.hash_map.get("WITH_TRACY") != null) true else false;
+    const tracy_enabled: bool = false; //if (b.graph.env_map.hash_map.get("WITH_TRACY") != null) true else false;
     // if (b.graph.env_map.hash_map.get("WITH_TRACY")) |with_tracy| {
     //     tracy_enabled = with_tracy;
     // }

projects/content/_shaders/msl/lit_mesh.frag.msl

@@ -0,0 +1,22 @@
+#include <metal_stdlib>
+#include <simd/simd.h>
+
+using namespace metal;
+
+struct main0_out
+{
+    float4 out_var_SV_Target0 [[color(0)]];
+};
+
+struct main0_in
+{
+    float2 in_var_TEXCOORD0 [[user(locn0)]];
+};
+
+fragment main0_out main0(main0_in in [[stage_in]])
+{
+    main0_out out = {};
+    out.out_var_SV_Target0 = float4(in.in_var_TEXCOORD0, 0.0, 1.0);
+    return out;
+}
+

projects/content/_shaders/msl/meshes.vert.msl

@@ -16,6 +16,7 @@ struct type_StructuredBuffer_Scene
 struct type_Uniforms
 {
     float4x4 ViewProjection;
+    char _m1_pad[192];
     float time;
 };
 

projects/reflected.zig

@@ -0,0 +1,32 @@
+pub const shaderTypes = @import("shaderTypes");
+
+pub const int = shaderTypes.int;
+pub const uint = shaderTypes.uint;
+
+pub const vec2 = shaderTypes.vec2;
+pub const u8vec4 = shaderTypes.u8vec4;
+pub const vec3 = shaderTypes.vec3;
+pub const vec4 = shaderTypes.vec4;
+pub const mat4 = shaderTypes.mat4;
+pub const float = shaderTypes.float;
+
+pub const BufferInfo = shaderTypes.BufferInfo;
+pub const Scene = struct {
+    Model: mat4,
+
+    pub const Buffer: BufferInfo = .{ .storage = 0 };
+};
+
+pub const Uniforms = struct {
+    ViewProjection: mat4,
+    time: float,
+
+    pub const Buffer: BufferInfo = .{ .uniform = 0 };
+};
+
+pub const LoadArgs = shaderTypes.ShaderLoadArgs{
+    .num_samplers = 0, // The number of samplers defined in the shader.
+    .num_storage_textures = 0, // The number of storage textures defined in the shader.
+    .num_storage_buffers = 1, // The number of storage buffers defined in the shader.
+    .num_uniform_buffers = 1, // The number of uniform buffers defined in the shader.
+};

projects/sampleGame/main.zig

@@ -1,5 +1,12 @@
 allocator: std.mem.Allocator,
 
+camera: core.Entity = undefined,
+cameraSpeed: f32 = 10.0,
+
+moveInput: *core.Axis2dBinding = undefined,
+
+moveVector: core.Vectorf = .{},
+
 pub var NeonObjectTable: core.EngineObjectVTable = core.EngineObjectVTable.from(@This());
 
 pub fn init(allocator: std.mem.Allocator) !*@This() {
@@ -24,7 +31,6 @@ const assetReferences = [_]assets.AssetImportReference{
 };
 
 pub fn prepare(self: *@This()) !void {
-    _ = self;
     core.engine_log(">>>>>>> game prepare", .{});
     var z = core.tracy.ZoneN(@src(), "PREPARING GAME");
     defer z.End();
@@ -38,6 +44,27 @@ pub fn prepare(self: *@This()) !void {
     exitInput.addKey(.escape, .keyDown);
     _ = exitInput.data.addListener(null, onExit);
     exitInput.activate();
+
+    self.camera = try core.createEntity();
+    const scene = self.camera.addComponent(core.Scene).?;
+    _ = scene;
+    const camera = self.camera.addComponent(rend.CameraComponent).?;
+    rend.setActiveCamera(camera);
+
+    self.moveInput = try core.Axis2dBinding.create(core.MakeName("movement"));
+
+    self.moveInput.addKey(.w, 1.0, .y);
+    self.moveInput.addKey(.s, -1.0, .y);
+    self.moveInput.addKey(.d, 1.0, .x);
+    self.moveInput.addKey(.a, -1.0, .x);
+
+    _ = self.moveInput.data.addListener(self, onMove);
+    self.moveInput.activate();
+}
+
+fn onMove(ctx: ?*anyopaque, axis: core.Vector2f) void {
+    const self: *@This() = @ptrCast(@alignCast(ctx));
+    self.moveVector = .{ .x = -axis.x, .z = axis.y, .y = 0.0 };
 }
 
 pub fn onExit(ctx: ?*anyopaque, action: core.ActionEvent) void {
@@ -47,9 +74,12 @@ pub fn onExit(ctx: ?*anyopaque, action: core.ActionEvent) void {
     core.exitNow();
 }
 
-pub fn tick(self: *@This(), _: f64) void {
+pub fn tick(self: *@This(), dt: f64) void {
-    _ = self;
+    const fdt: f32 = @floatCast(dt);
-    std.time.sleep(6000 * 1000); // just gonna put this here...
+    if (self.camera.get(core.Scene)) |scene| {
+        scene.getPosRot().position = scene.getPosRot().position.add(self.moveVector.fmul(self.cameraSpeed * fdt));
+        core.engine_log(" camera position >> {any}", .{scene.getPosRot().position});
+    }
 }
 
 pub fn deinit(self: *@This()) void {