Jérôme Bousquié
c2cbd7fadb
Implement shadow mapping for directional lights: - Scene::set_shadow_caster(Option<usize>) selects the shadow-casting light by packed frame-array index (None disables; point lights rejected at render). - Lights::get(index) resolves a packed index across the directional/point/spot lists. - Renderer allocates a shadow depth map, comparison sampler, group-3 bind groups, shadow uniform buffer and shadow pipeline; render_scene does a depth-only shadow pass before the main pass; compute_shadow_light_view_proj builds an orthographic light-space frustum from the scene radius. - standard_shader: shadow_light_index/light_view_proj/shadow_params uniforms, @group(3) depth map + comparison sampler, 3x3 PCF compute_shadow(). - shadow_shader: path/vertex shader with attribute layout matching the shared vertex buffer (only position consumed). - shadow_test example: directional shadow caster casts a PCF-softened shadow onto a ground slab; documented in examples README.
21 lines
945 B
Rust
21 lines
945 B
Rust
//! # Utils Module — Configuration and Error Handling
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//!
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//! Defines two leaf concepts: **conf** (shared constants for shader paths and embedded WGSL source) and
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//! **error** (WsgError, the application-level error type mapping wgpu failure modes to user-friendly messages).
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//! Both are consumed by other modules but have no internal dependencies on them.
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//!
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//! ## Interaction with Other Modules
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//! - `pipeline_cache` loads shaders from disk using conf::STANDARD_SHADER_PATH; falls back to STANDARD_SHADER.
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//! - `context` returns WsgError variants from all fallible methods (new, configure, begin_frame).
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//! - `renderer` does not use errors directly (panics on invalid state rather than returning Result).
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pub mod conf;
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pub mod error;
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// Re-exports
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pub use conf::{
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SHADOW_MAP_SIZE, SHADOW_SCENE_CENTER, SHADOW_SCENE_RADIUS, SHADOW_SHADER, SHADOW_SHADER_PATH,
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STANDARD_SHADER, STANDARD_SHADER_PATH,
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};
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pub use error::WsgError;
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