chore(fix): render data cache

README.md

@@ -14,7 +14,7 @@ Add this library to your project and one of the following renderers: `fast3d-wgp
 The library consists of three main components:
 
 - `RCP` - This represents the N64 RCP and provides a reset and a `process_dl` method.
-- `RenderData` - This is the output returned after processing a display list.
+- `RenderData` - This is given to the RCP run command that collects draw data and textures for rendering with different renderers.
 - `WgpuRenderer` - This is a renderer that can be used to render data produced
 - `GliumRenderer` - This is a renderer that can be used to render data produced
 

examples/triangle/src/main.rs

@@ -1,6 +1,6 @@
 use f3dwgpu::WgpuRenderer;
 use fast3d::rdp::{OutputDimensions, SCREEN_HEIGHT, SCREEN_WIDTH};
-use fast3d::RCP;
+use fast3d::{RCP, RenderData};
 use fast3d_gbi::defines::color_combiner::G_CC_SHADE;
 use fast3d_gbi::defines::f3dex2::{GeometryModes, MatrixMode, MatrixOperation};
 use fast3d_gbi::defines::{
@@ -70,6 +70,7 @@ impl<F: Future<Output = Option<wgpu::Error>>> Future for ErrorFuture<F> {
 
 struct Example<'a> {
     rcp: RCP,
+    render_data: RenderData,
     renderer: WgpuRenderer<'a>,
 
     depth_texture: wgpu::TextureView,
@@ -235,6 +236,7 @@ impl fast3d_example::framework::Example for Example<'static> {
 
         Self {
             rcp,
+            render_data: RenderData::default(),
             renderer: WgpuRenderer::new(device, [config.width, config.height]),
 
             depth_texture: Self::create_depth_texture(config, device),
@@ -337,11 +339,11 @@ impl fast3d_example::framework::Example for Example<'static> {
         });
 
         // Run the RCP
-        let mut render_data = self.rcp.process_dl(draw_commands_ptr as usize);
+        self.rcp.process_dl(draw_commands_ptr as usize, &mut self.render_data);
 
         // Process the RCP output
         self.renderer
-            .process_rcp_output(device, queue, self.surface_format, &mut render_data);
+            .process_rcp_output(device, queue, self.surface_format, &mut self.render_data);
 
         // Draw the RCP output
         self.renderer.draw(&mut rpass);

fast3d/src/rcp.rs

@@ -36,14 +36,10 @@ impl RCP {
     /// render list and process until it hits a final `G_ENDDL`.
     /// Returns a `RenderData` struct containing graphics data that
     /// can be used to render.
-    pub fn process_dl(&mut self, commands: usize) -> RenderData {
+    pub fn process_dl(&mut self, commands: usize, output: &mut RenderData) {
         self.reset();
-
-        let mut output = RenderData::new();
-        self.run_dl(&mut output, commands);
-        self.rdp.flush(&mut output);
-
-        output
+        self.run_dl(output, commands);
+        self.rdp.flush(output);
     }
 
     fn run_dl(&mut self, output: &mut RenderData, commands: usize) {