Initial Commit

1 files changed, 63 insertions, 0 deletions

diff --git a/src/resources.rs b/src/resources.rs
new file mode 100644
index 0000000..d755dc2
--- /dev/null
+++ b/src/resources.rs
@@ -0,0 +1,63 @@
+use bevy::{prelude::*, render::{render_resource::{Sampler, BindGroupLayout, BindGroupLayoutEntries, ShaderStages, binding_types::{texture_2d, sampler, uniform_buffer}, TextureSampleType, SamplerBindingType, SamplerDescriptor, PipelineCache, RenderPipelineDescriptor, CachedRenderPipelineId, PrimitiveState, MultisampleState, FragmentState, ColorTargetState, TextureFormat, ColorWrites}, renderer::RenderDevice, texture::BevyDefault}, core_pipeline::fullscreen_vertex_shader::fullscreen_shader_vertex_state};
+
+use super::components;
+
+#[derive(Resource)]
+pub struct OutlinePostProcessPipeline {
+    pub layout: BindGroupLayout,
+    pub screen_sampler: Sampler,
+    pub normal_sampler: Sampler,
+    pub pipeline_id: CachedRenderPipelineId,
+}
+
+impl FromWorld for OutlinePostProcessPipeline {
+    fn from_world(world: &mut World) -> Self {
+        let render_device = world.resource::<RenderDevice>();
+
+        let layout = render_device.create_bind_group_layout(
+            "outline_post_process_bind_group_layout",
+            &BindGroupLayoutEntries::sequential(
+                ShaderStages::FRAGMENT,
+                (
+                    texture_2d(TextureSampleType::Float{ filterable: true }),
+                    sampler(SamplerBindingType::Filtering),
+                    texture_2d(TextureSampleType::Float{ filterable: true }),
+                    sampler(SamplerBindingType::Filtering),
+                    uniform_buffer::<components::OutlinePostProcessSettings>(false),
+                ),
+            ),
+        );
+
+        let screen_sampler = render_device.create_sampler(&SamplerDescriptor::default());
+        let normal_sampler = render_device.create_sampler(&SamplerDescriptor::default());
+
+        let shader = world.resource::<AssetServer>().load::<Shader>("embedded://grex_outline_post_process/../assets/shaders/outline_post_process.wgsl");
+        
+        let pipeline_id = world.resource_mut::<PipelineCache>().queue_render_pipeline(RenderPipelineDescriptor {
+            label: Some("outline_post_process_render_pipeline".into()),
+            layout: vec![layout.clone()],
+            push_constant_ranges: vec![],
+            vertex: fullscreen_shader_vertex_state(),
+            primitive: PrimitiveState::default(),
+            depth_stencil: None,
+            multisample: MultisampleState::default(),
+            fragment: Some(FragmentState {
+                shader,
+                shader_defs: vec![],
+                entry_point: "fragment".into(),
+                targets: vec![Some(ColorTargetState { 
+                    format: TextureFormat::bevy_default(),
+                    blend: None,
+                    write_mask: ColorWrites::ALL, 
+                })],
+            }),
+        });
+
+        Self {
+            layout,
+            screen_sampler,
+            normal_sampler,
+            pipeline_id,
+        }
+    }
+}