1 files changed, 83 insertions, 0 deletions
diff --git a/rust/crates/compositor/src/frame.rs b/rust/crates/compositor/src/frame.rs
new file mode 100644
index 00000000..871a9759
--- /dev/null
+++ b/rust/crates/compositor/src/frame.rs
@@ -0,0 +1,83 @@
+use std::collections::HashMap;
+
+use serde::{Deserialize, Serialize};
+
+use crate::BlendMode;
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct FrameDescriptor {
+    pub width: u32,
+    pub height: u32,
+    pub clear: CanvasClearDescriptor,
+    pub items: Vec<FrameItemDescriptor>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct CanvasClearDescriptor {
+    pub color: [f32; 4],
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(tag = "type", rename_all = "camelCase")]
+pub enum FrameItemDescriptor {
+    Layer(LayerDescriptor),
+    SceneEffect {
+        effect_pass_groups: Vec<Vec<EffectPassDescriptor>>,
+    },
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct LayerDescriptor {
+    pub texture_id: String,
+    pub transform: QuadTransformDescriptor,
+    pub opacity: f32,
+    pub blend_mode: BlendMode,
+    #[serde(default)]
+    pub effect_pass_groups: Vec<Vec<EffectPassDescriptor>>,
+    pub mask: Option<LayerMaskDescriptor>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct QuadTransformDescriptor {
+    pub center_x: f32,
+    pub center_y: f32,
+    pub width: f32,
+    pub height: f32,
+    pub rotation_degrees: f32,
+    pub flip_x: bool,
+    pub flip_y: bool,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct LayerMaskDescriptor {
+    pub texture_id: String,
+    pub feather: f32,
+    pub inverted: bool,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct EffectPassDescriptor {
+    pub shader: String,
+    pub uniforms: HashMap<String, EffectUniformValueDescriptor>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum EffectUniformValueDescriptor {
+    Number(f32),
+    Vector(Vec<f32>),
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct CanvasTextureDescriptor {
+    pub id: String,
+    pub width: u32,
+    pub height: u32,
+}