1 files changed, 47 insertions, 0 deletions
diff --git a/stockton-skeleton/src/draw_passes/mod.rs b/stockton-skeleton/src/draw_passes/mod.rs
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+++ b/stockton-skeleton/src/draw_passes/mod.rs
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+//! Traits and common draw passes.
+use super::{queue_negotiator::QueueNegotiator, RenderingContext};
+use crate::types::*;
+use stockton_types::Session;
+
+use anyhow::Result;
+
+mod cons;
+pub mod util;
+
+pub use cons::ConsDrawPass;
+
+/// One of several 'passes' that draw on each frame.
+pub trait DrawPass {
+    /// Queue any necessary draw commands to cmd_buffer
+    /// This should assume the command buffer isn't in the middle of a renderpass, and should leave it as such.
+    fn queue_draw(
+        &mut self,
+        session: &Session,
+        img_view: &ImageViewT,
+        cmd_buffer: &mut CommandBufferT,
+    ) -> Result<()>;
+
+    /// Called just after the surface changes (probably a resize).
+    fn handle_surface_change(
+        &mut self,
+        session: &Session,
+        context: &mut RenderingContext,
+    ) -> Result<()>;
+
+    /// Deactivate any vulkan parts that need to be deactivated
+    fn deactivate(self, context: &mut RenderingContext) -> Result<()>;
+}
+
+/// A type that can be made into a specific draw pass type.
+/// This allows extra data to be used in initialisation without the Renderer needing to worry about it.
+pub trait IntoDrawPass<T: DrawPass> {
+    fn init(self, session: &mut Session, context: &mut RenderingContext) -> Result<T>;
+
+    /// This function should ask the queue negotatior to find families for any auxilary operations this draw pass needs to perform
+    /// For example, .find(&TexLoadQueue)
+    /// It should return then call .family_spec for each queue type negotiated and return the results.
+    fn find_aux_queues<'a>(
+        adapter: &'a Adapter,
+        queue_negotiator: &mut QueueNegotiator,
+    ) -> Result<Vec<(&'a QueueFamilyT, Vec<f32>)>>;
+}