Fixes and adjustments

src/assets.zig

@@ -200,7 +200,8 @@ pub fn update() void {
     while (Assets.free_board.pop()) |request| {
         if (@atomicLoad(usize, &request.counter, .monotonic) == 0) {
             if (!Assets.asset_map.remove(.{ .type = request.type, .path = request.path })) continue;
-            request.unload(Game.alloc);
+            if (request.state == .loaded)
+                request.unload(Game.alloc);
             Game.alloc.destroy(request);
         }
     }

src/assets/texture.zig

@@ -11,6 +11,7 @@ sampler: *sdl.GPUSampler,
 pub fn load(path: []const u8, alloc: std.mem.Allocator) Assets.LoadError!@This() {
     _ = alloc;
     var file = Assets.load(.file, path);
+    defer Assets.free(file);
     const data = (file.getSync() catch return error.DependencyError).bytes;
 
     var width: u32 = undefined;
@@ -24,7 +25,6 @@ pub fn load(path: []const u8, alloc: std.mem.Allocator) Assets.LoadError!@This()
         @ptrCast(&channels),
         4,
     );
-    Assets.free(file);
     if (image == null) return error.ParsingError;
     defer c.stbi_image_free(image);
     const image_slice = image[0..@intCast(width * height * channels)];
@@ -33,13 +33,14 @@ pub fn load(path: []const u8, alloc: std.mem.Allocator) Assets.LoadError!@This()
 
     const target_format = sdl.GPU_TEXTUREFORMAT_R8G8B8A8_UNORM;
     const bytes_per_pixel = 4;
+    const mip_level = if(std.math.isPowerOfTwo(width) and width == height) @as(u32, Graphics.MIP_LEVEL) else @as(u32, 1);
 
     const texture = Graphics.createTexture(
         width,
         height,
         target_format,
         sdl.GPU_TEXTUREUSAGE_SAMPLER | sdl.GPU_TEXTUREUSAGE_COLOR_TARGET,
-        Graphics.MIP_LEVEL,
+        mip_level,
     );
     errdefer Graphics.freeTexture(texture);
 
@@ -83,7 +84,7 @@ pub fn load(path: []const u8, alloc: std.mem.Allocator) Assets.LoadError!@This()
             }, false);
         }
         rows_uploaded += rows_to_upload;
-        if (rows_to_upload == height) {
+        if (rows_uploaded == height) {
             sdl.GenerateMipmapsForGPUTexture(command_buffer, texture);
         }
         const fence = sdl.SubmitGPUCommandBufferAndAcquireFence(command_buffer) orelse return error.SdlError;
@@ -91,7 +92,7 @@ pub fn load(path: []const u8, alloc: std.mem.Allocator) Assets.LoadError!@This()
         if (!sdl.WaitForGPUFences(Graphics.device, true, &fence, 1)) return error.SdlError;
     }
 
-    const sampler = Graphics.createSampler();
+    const sampler = Graphics.createSampler(mip_level);
 
     return .{
         .texture = texture,

src/graphics.zig

@@ -424,7 +424,7 @@ pub fn freeTexture(texture: *sdl.GPUTexture) void {
     sdl.ReleaseGPUTexture(Graphics.device, texture);
 }
 
-pub fn createSampler() *sdl.GPUSampler {
+pub fn createSampler(mip_level: u32) *sdl.GPUSampler {
     return sdl.CreateGPUSampler(Graphics.device, &sdl.GPUSamplerCreateInfo{
         .address_mode_u = sdl.GPU_SAMPLERADDRESSMODE_CLAMP_TO_EDGE,
         .address_mode_v = sdl.GPU_SAMPLERADDRESSMODE_CLAMP_TO_EDGE,
@@ -433,8 +433,8 @@ pub fn createSampler() *sdl.GPUSampler {
         .min_filter = sdl.GPU_FILTER_LINEAR,
         .mipmap_mode = sdl.GPU_SAMPLERMIPMAPMODE_LINEAR,
         .min_lod = 0,
-        .max_lod = 16,
+        .max_lod = @floatFromInt(mip_level - 1),
-        .mip_lod_bias = -2,
+        .mip_lod_bias = -0.5,
     }) orelse err.sdl();
 }
 

src/world.zig

@@ -94,7 +94,6 @@ pub fn initDebug() void {
     Assets.free(Assets.load(.texture, "data/yakuza.png"));
 
     World.plane_mesh = Graphics.loadMesh(@ptrCast(&PLANE_MESH_DATA));
-    World.cube_mesh = Graphics.loadMesh(@ptrCast(&CUBE_MESH_DATA));
     World.table_mesh = Graphics.loadMesh(@ptrCast(&Graphics.generatePlane(0, 0, 0.5, 0.5, 8, 8)));
     World.texture = Assets.load(.texture, "data/yakuza.png");
     World.hand_texture = Assets.load(.texture, "data/hand.png");
@@ -116,7 +115,6 @@ pub fn initDebug() void {
 
 pub fn deinit() void {
     Graphics.unloadMesh(World.plane_mesh);
-    Graphics.unloadMesh(World.cube_mesh);
     Graphics.unloadMesh(World.table_mesh);
     Assets.free(World.texture);
     Assets.free(World.hand_texture);
@@ -425,11 +423,9 @@ fn updateOrder() void {
     }
 }
 
-const CUBEMAP_MESH_DATA = CUBE_MESH_DATA;
-
 const T1 = 1.0 / 3.0;
 const T2 = 2.0 / 3.0;
-const CUBE_MESH_DATA = [_]f32{
+const CUBEMAP_MESH_DATA = [_]f32{
     -0.5, 0.5,  -0.5, T2,  0,
     -0.5, -0.5, -0.5, T2,  0.5,
     0.5,  0.5,  -0.5, 1,   0,