6bc77cb777
feat(renderer): add ORM and emissive texture map support to PBR pipeline
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- Extended bind group 1: albedo + normal + ORM + emissive (8 bindings)
- pbr_shader.wgsl: ORM sampling (R=AO, G=roughness, B=metallic) + emissive
- deferred_gbuffer.wgsl: ORM + emissive luminance in material_data.w
- deferred_lighting.wgsl: emissive contribution from G-Buffer
- All 5 PBR examples updated with default ORM/emissive textures
- Backward compatible: old 4-binding layout preserved
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com >
2026-03-25 20:41:30 +09:00
5232552aa4
feat(renderer): add normal mapping and procedural IBL to PBR shader
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- Add tangent input (location 3) and TBN computation in vertex shader
- Add normal map sampling (group 1, bindings 2-3) for tangent-space normal mapping
- Add BRDF LUT binding (group 4, bindings 0-1) for specular IBL
- Add procedural sky environment function for diffuse/specular IBL
- Replace flat ambient with split-sum IBL approximation
- Add pbr_texture_bind_group_layout (4 entries: albedo + normal)
- Add create_pbr_texture_bind_group helper and flat_normal_1x1 texture
- Update create_pbr_pipeline to accept ibl_layout parameter (group 4)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com >
2026-03-24 21:28:32 +09:00
71f6081dc9
feat(renderer): add BMP texture loader and GPU texture upload
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Implements parse_bmp (24/32-bit uncompressed BMP to RGBA), GpuTexture with
wgpu 28.0 write_texture API (TexelCopyTextureInfo/TexelCopyBufferLayout),
bind_group_layout, white_1x1 fallback, and 3 BMP parser unit tests.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com >
2026-03-24 19:52:35 +09:00
