mirror of
https://github.com/bevyengine/bevy
synced 2024-12-21 02:23:08 +00:00
dd14f3a477
 # Objective Lightmaps, textures that store baked global illumination, have been a mainstay of real-time graphics for decades. Bevy currently has no support for them, so this pull request implements them. ## Solution The new `Lightmap` component can be attached to any entity that contains a `Handle<Mesh>` and a `StandardMaterial`. When present, it will be applied in the PBR shader. Because multiple lightmaps are frequently packed into atlases, each lightmap may have its own UV boundaries within its texture. An `exposure` field is also provided, to control the brightness of the lightmap. Note that this PR doesn't provide any way to bake the lightmaps. That can be done with [The Lightmapper] or another solution, such as Unity's Bakery. --- ## Changelog ### Added * A new component, `Lightmap`, is available, for baked global illumination. If your mesh has a second UV channel (UV1), and you attach this component to the entity with that mesh, Bevy will apply the texture referenced in the lightmap. [The Lightmapper]: https://github.com/Naxela/The_Lightmapper --------- Co-authored-by: Carter Anderson <mcanders1@gmail.com>
57 lines
1.3 KiB
WebGPU Shading Language
57 lines
1.3 KiB
WebGPU Shading Language
#define_import_path bevy_pbr::forward_io
|
|
|
|
struct Vertex {
|
|
@builtin(instance_index) instance_index: u32,
|
|
#ifdef VERTEX_POSITIONS
|
|
@location(0) position: vec3<f32>,
|
|
#endif
|
|
#ifdef VERTEX_NORMALS
|
|
@location(1) normal: vec3<f32>,
|
|
#endif
|
|
#ifdef VERTEX_UVS
|
|
@location(2) uv: vec2<f32>,
|
|
#endif
|
|
#ifdef VERTEX_UVS_B
|
|
@location(3) uv_b: vec2<f32>,
|
|
#endif
|
|
#ifdef VERTEX_TANGENTS
|
|
@location(4) tangent: vec4<f32>,
|
|
#endif
|
|
#ifdef VERTEX_COLORS
|
|
@location(5) color: vec4<f32>,
|
|
#endif
|
|
#ifdef SKINNED
|
|
@location(6) joint_indices: vec4<u32>,
|
|
@location(7) joint_weights: vec4<f32>,
|
|
#endif
|
|
#ifdef MORPH_TARGETS
|
|
@builtin(vertex_index) index: u32,
|
|
#endif
|
|
};
|
|
|
|
struct VertexOutput {
|
|
// This is `clip position` when the struct is used as a vertex stage output
|
|
// and `frag coord` when used as a fragment stage input
|
|
@builtin(position) position: vec4<f32>,
|
|
@location(0) world_position: vec4<f32>,
|
|
@location(1) world_normal: vec3<f32>,
|
|
#ifdef VERTEX_UVS
|
|
@location(2) uv: vec2<f32>,
|
|
#endif
|
|
#ifdef VERTEX_UVS_B
|
|
@location(3) uv_b: vec2<f32>,
|
|
#endif
|
|
#ifdef VERTEX_TANGENTS
|
|
@location(4) world_tangent: vec4<f32>,
|
|
#endif
|
|
#ifdef VERTEX_COLORS
|
|
@location(5) color: vec4<f32>,
|
|
#endif
|
|
#ifdef VERTEX_OUTPUT_INSTANCE_INDEX
|
|
@location(6) @interpolate(flat) instance_index: u32,
|
|
#endif
|
|
}
|
|
|
|
struct FragmentOutput {
|
|
@location(0) color: vec4<f32>,
|
|
}
|