feat(renderer): add PBR material, sphere generator, Cook-Torrance shader, and PBR pipeline

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-24 20:41:02 +09:00
parent cca50c8bc2
commit b09e1df878
5 changed files with 343 additions and 0 deletions
--- a/crates/voltex_renderer/src/pbr_pipeline.rs
+++ b/crates/voltex_renderer/src/pbr_pipeline.rs
@@ -0,0 +1,65 @@
+use crate::vertex::MeshVertex;
+use crate::gpu::DEPTH_FORMAT;
+
+pub fn create_pbr_pipeline(
+    device: &wgpu::Device,
+    format: wgpu::TextureFormat,
+    camera_light_layout: &wgpu::BindGroupLayout,
+    texture_layout: &wgpu::BindGroupLayout,
+    material_layout: &wgpu::BindGroupLayout,
+) -> wgpu::RenderPipeline {
+    let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
+        label: Some("PBR Shader"),
+        source: wgpu::ShaderSource::Wgsl(include_str!("pbr_shader.wgsl").into()),
+    });
+
+    let layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+        label: Some("PBR Pipeline Layout"),
+        bind_group_layouts: &[camera_light_layout, texture_layout, material_layout],
+        immediate_size: 0,
+    });
+
+    device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+        label: Some("PBR Pipeline"),
+        layout: Some(&layout),
+        vertex: wgpu::VertexState {
+            module: &shader,
+            entry_point: Some("vs_main"),
+            buffers: &[MeshVertex::LAYOUT],
+            compilation_options: wgpu::PipelineCompilationOptions::default(),
+        },
+        fragment: Some(wgpu::FragmentState {
+            module: &shader,
+            entry_point: Some("fs_main"),
+            targets: &[Some(wgpu::ColorTargetState {
+                format,
+                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: Some(wgpu::DepthStencilState {
+            format: DEPTH_FORMAT,
+            depth_write_enabled: true,
+            depth_compare: wgpu::CompareFunction::Less,
+            stencil: wgpu::StencilState::default(),
+            bias: wgpu::DepthBiasState::default(),
+        }),
+        multisample: wgpu::MultisampleState {
+            count: 1,
+            mask: !0,
+            alpha_to_coverage_enabled: false,
+        },
+        multiview_mask: None,
+        cache: None,
+    })
+}