fixes to uvs

wip on custom chunk shader

engine/world_generation/src/heightmap.rs

@@ -29,7 +29,7 @@ pub fn generate_chunk(chunk_x: f64, chunk_z: f64, cfg: &GenerationConfig, seed:
 				&cfg,
 				&noise,
 			);
-			result[x + z * Chunk::SIZE] = sample.floor();
+			result[x + z * Chunk::SIZE] = sample;
 		}
 	}
 	return Chunk {

engine/world_generation/src/mesh_generator.rs

@@ -71,11 +71,10 @@ fn create_tile(
 	let tex_x = texture_index % 11;
 	let tex_y = texture_index / 11;
 	let x_min = tex_x as f32 / 11.;
-	let x_max = (tex_x + 1) as f32 / 11.;
 	let y_min = tex_y as f32 / 8.;
-	let tx_unit = x_max - x_min;
+	const TX_UNIT: Vec2 = Vec2::new(1. / 11., 1. / 8.);
 
-	let uv_offset = Vec2::new(x_min + tx_unit / 2., y_min + tx_unit / 2.);
+	let uv_offset = Vec2::new(x_min + TX_UNIT.x / 2., y_min + TX_UNIT.y / 2.);
 
 	let idx = verts.len() as u32;
 	uvs.push(uv_offset);
@@ -83,7 +82,7 @@ fn create_tile(
 	for i in 0..6 {
 		let p = pos + HEX_CORNERS[i];
 		verts.push(p);
-		let uv = (HEX_CORNERS[i].xz() * tx_unit / 2.) + uv_offset;
+		let uv = (HEX_CORNERS[i].xz() * TX_UNIT / 2.) + uv_offset;
 		uvs.push(uv);
 		indices.push(idx);
 		indices.push(idx + 1 + i as u32);
@@ -103,7 +102,7 @@ fn create_tile(
 						uvs,
 						indices,
 						Vec2::new(x_min, y_min),
-						Vec2::new(x_min + tx_unit, y_min + tx_unit),
+						Vec2::new(x_min + TX_UNIT.x, y_min + TX_UNIT.y),
 					);
 				}
 			}

game/main/assets/shaders/world/chunk.wgsl

@@ -0,0 +1,56 @@
+#import bevy_pbr::{
+    forward_io::VertexOutput,
+    mesh_view_bindings::view,
+    pbr_types::{STANDARD_MATERIAL_FLAGS_DOUBLE_SIDED_BIT, PbrInput, pbr_input_new},
+    pbr_functions as fns,
+}
+#import bevy_core_pipeline::tonemapping::tone_mapping
+
+@group(2) @binding(0) var my_array_texture: texture_2d_array<f32>;
+@group(2) @binding(1) var my_array_texture_sampler: sampler;
+
+@fragment
+fn fragment(
+    @builtin(front_facing) is_front: bool,
+    mesh: VertexOutput,
+) -> @location(0) vec4<f32> {
+    let layer = i32(mesh.world_position.x) & 0x3;
+
+    // Prepare a 'processed' StandardMaterial by sampling all textures to resolve
+    // the material members
+    var pbr_input: PbrInput = pbr_input_new();
+
+    pbr_input.material.base_color = textureSample(my_array_texture, my_array_texture_sampler, mesh.uv, layer);
+#ifdef VERTEX_COLORS
+    pbr_input.material.base_color = pbr_input.material.base_color * mesh.color;
+#endif
+
+    let double_sided = (pbr_input.material.flags & STANDARD_MATERIAL_FLAGS_DOUBLE_SIDED_BIT) != 0u;
+
+    pbr_input.frag_coord = mesh.position;
+    pbr_input.world_position = mesh.world_position;
+    pbr_input.world_normal = fns::prepare_world_normal(
+        mesh.world_normal,
+        double_sided,
+        is_front,
+    );
+
+    pbr_input.is_orthographic = view.projection[3].w == 1.0;
+
+    pbr_input.N = fns::apply_normal_mapping(
+        pbr_input.material.flags,
+        mesh.world_normal,
+        double_sided,
+        is_front,
+#ifdef VERTEX_TANGENTS
+#ifdef STANDARD_MATERIAL_NORMAL_MAP
+        mesh.world_tangent,
+#endif
+#endif
+        mesh.uv,
+        view.mip_bias,
+    );
+    pbr_input.V = fns::calculate_view(mesh.world_position, pbr_input.is_orthographic);
+
+    return tone_mapping(fns::apply_pbr_lighting(pbr_input), view.color_grading);
+}

game/main/src/main.rs

@@ -1,4 +1,5 @@
 use bevy::prelude::*;
+use bevy::window::PresentMode;
 use bevy_inspector_egui::quick::WorldInspectorPlugin;
 mod phos;
 mod prelude;
@@ -13,11 +14,8 @@ fn main() {
 					title: "Phos".into(),
 					name: Some("phos".into()),
 					resolution: (1920.0, 1080.0).into(),
-					resizable: false,
-					enabled_buttons: bevy::window::EnabledButtons {
-						maximize: false,
-						..Default::default()
-					},
+					resizable: true,
+					present_mode: PresentMode::AutoNoVsync,
 					..default()
 				}),
 				..default()

game/main/src/phos.rs

@@ -1,3 +1,5 @@
+use bevy::pbr::MaterialExtension;
+use bevy::render::render_resource::{AsBindGroup, ShaderRef};
 use bevy::{pbr::CascadeShadowConfig, prelude::*};
 use camera_system::PhosCameraPlugin;
 use iyes_perf_ui::prelude::*;
@@ -166,3 +168,16 @@ fn create_map(
 
 	commands.insert_resource(heightmap);
 }
+
+#[derive(Asset, TypePath, AsBindGroup, Debug, Clone)]
+struct ChunkMaterial {
+	#[texture(0, dimension = "2d_array")]
+	#[sampler(1)]
+	array_texture: Handle<Image>,
+}
+
+impl MaterialExtension for ChunkMaterial {
+	fn fragment_shader() -> ShaderRef {
+		"shaders/world/chunk.wgsl".into()
+	}
+}