Static arena with 20x20 floor and 4 box obstacles rendered using the
forward PBR pipeline with shadow mapping. Fixed quarter-view camera
at (0, 15, 10) looking at origin.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Interactive demo showing panel, text, button, slider, and checkbox
widgets rendered via the new UiRenderer pipeline. Uses winit event
loop with mouse input forwarded to UiContext.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add 'enable wgpu_ray_query' to RT shadow shader
- Fix RayDesc struct constructor syntax and rayQueryGetCommittedIntersection API
- Enable ExperimentalFeatures in GpuContext for RT
- Change RT shadow texture binding to non-filterable (R32Float)
- Use textureLoad instead of textureSample for RT shadow in lighting pass
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Lighting pass now renders to Rgba16Float HDR target. A 5-level bloom
mip chain (downsample with bright-extract threshold, then additive
upsample) feeds into an ACES tonemap pass that composites the final
LDR output to the swapchain surface. All resources resize correctly.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Integrate BLAS/TLAS acceleration structures and RT shadow compute pass
into the deferred rendering demo. Adds GpuContext::new_with_features()
for requesting EXPERIMENTAL_RAY_QUERY, Mesh::new_with_usage() for
BLAS_INPUT buffer flags, and extends the lighting shadow bind group
to 9 entries (shadow map + IBL + SSGI + RT shadow).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Demonstrates two-pass deferred rendering: G-Buffer pass writes position,
normal, albedo, and material to 4 render targets; lighting pass composites
with 8 animated orbiting point lights plus a directional light using a
fullscreen triangle.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
wgpu's default max_bind_groups is 4 (groups 0-3), but the PBR shader was
using group(4) for BRDF LUT bindings. This merges IBL bindings into the
shadow bind group (group 3) at binding slots 3-4, removes the standalone
IBL bind group layout/creation, and updates all examples accordingly.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Fix pbr_demo, multi_light_demo, and shadow_demo to use the new 7-param
create_pbr_pipeline with PBR texture bind group (4-entry: albedo+normal)
and IBL bind group. Create ibl_demo showcasing a 7x7 metallic/roughness
sphere grid with IBL-based ambient lighting via BRDF LUT integration.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add Mat4::orthographic() to voltex_math for light projection
- Fix pbr_demo and multi_light_demo to provide shadow bind group (group 3)
required by updated PBR pipeline (dummy shadow with size=0 disables it)
- Create shadow_demo with two-pass rendering: shadow depth pass using
orthographic light projection, then PBR color pass with shadow sampling
- Scene: ground plane, 3 spheres, 2 cubes with directional light
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Fix pbr_demo to use LightsUniform/LightData instead of old LightUniform.
Create multi_light_demo with 5 PBR spheres (varying metallic), a ground
plane, 4 colored orbiting point lights, a directional fill light, and a
spot light from above.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
7x7 grid of spheres demonstrating PBR material variation:
metallic increases along X axis, roughness along Y axis.
Uses dynamic UBO pattern for both camera and material uniforms.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Previous approach called write_buffer inside render pass which doesn't
work — GPU only sees the last value at submit time. Now pre-computes all
entity uniforms into a dynamic UBO and uses dynamic offsets per draw call.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
