1 files changed, 99 insertions, 0 deletions
diff --git a/examples/integration_wgpu/src/scene.rs b/examples/integration_wgpu/src/scene.rs
new file mode 100644
index 00000000..3e8277c8
--- /dev/null
+++ b/examples/integration_wgpu/src/scene.rs
@@ -0,0 +1,99 @@
+use iced_wgpu::wgpu;
+use iced_winit::Color;
+
+pub struct Scene {
+    pipeline: wgpu::RenderPipeline,
+}
+
+impl Scene {
+    pub fn new(device: &wgpu::Device) -> Scene {
+        let pipeline = build_pipeline(device);
+
+        Scene { pipeline }
+    }
+
+    pub fn clear<'a>(
+        &self,
+        target: &'a wgpu::TextureView,
+        encoder: &'a mut wgpu::CommandEncoder,
+        background_color: Color,
+    ) -> wgpu::RenderPass<'a> {
+        encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+            label: None,
+            color_attachments: &[wgpu::RenderPassColorAttachment {
+                view: target,
+                resolve_target: None,
+                ops: wgpu::Operations {
+                    load: wgpu::LoadOp::Clear({
+                        let [r, g, b, a] = background_color.into_linear();
+
+                        wgpu::Color {
+                            r: r as f64,
+                            g: g as f64,
+                            b: b as f64,
+                            a: a as f64,
+                        }
+                    }),
+                    store: true,
+                },
+            }],
+            depth_stencil_attachment: None,
+        })
+    }
+
+    pub fn draw<'a>(&'a self, render_pass: &mut wgpu::RenderPass<'a>) {
+        render_pass.set_pipeline(&self.pipeline);
+        render_pass.draw(0..3, 0..1);
+    }
+}
+
+fn build_pipeline(device: &wgpu::Device) -> wgpu::RenderPipeline {
+    let vs_module =
+        device.create_shader_module(&wgpu::include_spirv!("shader/vert.spv"));
+
+    let fs_module =
+        device.create_shader_module(&wgpu::include_spirv!("shader/frag.spv"));
+
+    let pipeline_layout =
+        device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+            label: None,
+            push_constant_ranges: &[],
+            bind_group_layouts: &[],
+        });
+
+    let pipeline =
+        device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+            label: None,
+            layout: Some(&pipeline_layout),
+            vertex: wgpu::VertexState {
+                module: &vs_module,
+                entry_point: "main",
+                buffers: &[],
+            },
+            fragment: Some(wgpu::FragmentState {
+                module: &fs_module,
+                entry_point: "main",
+                targets: &[wgpu::ColorTargetState {
+                    format: wgpu::TextureFormat::Bgra8UnormSrgb,
+                    blend: Some(wgpu::BlendState {
+                        color: wgpu::BlendComponent::REPLACE,
+                        alpha: wgpu::BlendComponent::REPLACE,
+                    }),
+                    write_mask: wgpu::ColorWrite::ALL,
+                }],
+            }),
+            primitive: wgpu::PrimitiveState {
+                topology: wgpu::PrimitiveTopology::TriangleList,
+                front_face: wgpu::FrontFace::Ccw,
+                ..Default::default()
+            },
+            depth_stencil: None,
+            multisample: wgpu::MultisampleState {
+                count: 1,
+                mask: !0,
+                alpha_to_coverage_enabled: false,
+            },
+        });
+
+    pipeline
+}