feat: migrate GPU renderer from WebGL to wgpu/WASM

1 files changed, 40 insertions, 0 deletions

diff --git a/rust/crates/gpu/src/lib.rs b/rust/crates/gpu/src/lib.rs
new file mode 100644
index 00000000..c53e63ab
--- /dev/null
+++ b/rust/crates/gpu/src/lib.rs
@@ -0,0 +1,40 @@
+mod context;
+mod effect_pipeline;
+mod mask_feather;
+mod sdf_pipeline;
+mod shader_registry;
+
+use thiserror::Error;
+
+pub use wgpu;
+pub use context::GpuContext;
+pub use effect_pipeline::{ApplyEffectsOptions, EffectPass, UniformValue};
+pub use mask_feather::ApplyMaskFeatherOptions;
+
+pub const GPU_TEXTURE_FORMAT: wgpu::TextureFormat = wgpu::TextureFormat::Bgra8Unorm;
+
+#[derive(Debug, Error)]
+pub enum GpuError {
+    #[error("No WebGPU adapter is available")]
+    AdapterUnavailable,
+    #[error("Failed to request a WebGPU device: {0}")]
+    RequestDevice(#[from] wgpu::RequestDeviceError),
+    #[error("Failed to create a WebGPU surface: {0}")]
+    CreateSurface(#[from] wgpu::CreateSurfaceError),
+    #[error("The output surface does not support the required texture format")]
+    UnsupportedSurfaceFormat,
+    #[error("Unknown effect shader '{shader}'")]
+    UnknownEffectShader { shader: String },
+    #[error("Missing uniform '{uniform}' for shader '{shader}'")]
+    MissingUniform { shader: String, uniform: String },
+    #[error("Uniform '{uniform}' for shader '{shader}' must be a number")]
+    InvalidNumberUniform { shader: String, uniform: String },
+    #[error("Uniform '{uniform}' for shader '{shader}' must be a vector of length {expected_length}")]
+    InvalidVectorUniform {
+        shader: String,
+        uniform: String,
+        expected_length: usize,
+    },
+    #[error("Shader '{shader}' does not support uniform '{uniform}'")]
+    UnsupportedUniform { shader: String, uniform: String },
+}