From 3f467d121229142177ef1b2f417fe87c7bf7fdf2 Mon Sep 17 00:00:00 2001
From: Jim Eckerlein <jim.eckerlein@icloud.com>
Date: Sun, 24 Sep 2023 15:10:19 +0200
Subject: Compute vertex position in shader

---
 wgpu/src/quad.rs | 61 --------------------------------------------------------
 1 file changed, 61 deletions(-)

(limited to 'wgpu/src/quad.rs')

diff --git a/wgpu/src/quad.rs b/wgpu/src/quad.rs
index 37d0c623..4bcf9a66 100644
--- a/wgpu/src/quad.rs
+++ b/wgpu/src/quad.rs
@@ -9,7 +9,6 @@ use crate::graphics::color;
 use crate::graphics::{self, Transformation};
 
 use bytemuck::{Pod, Zeroable};
-use wgpu::util::DeviceExt;
 
 use std::mem;
 
@@ -23,8 +22,6 @@ pub struct Pipeline {
     solid: solid::Pipeline,
     gradient: gradient::Pipeline,
     constant_layout: wgpu::BindGroupLayout,
-    vertices: wgpu::Buffer,
-    indices: wgpu::Buffer,
     layers: Vec<Layer>,
     prepare_layer: usize,
 }
@@ -48,23 +45,7 @@ impl Pipeline {
                 }],
             });
 
-        let vertices =
-            device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
-                label: Some("iced_wgpu::quad vertex buffer"),
-                contents: bytemuck::cast_slice(&VERTICES),
-                usage: wgpu::BufferUsages::VERTEX,
-            });
-
-        let indices =
-            device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
-                label: Some("iced_wgpu::quad index buffer"),
-                contents: bytemuck::cast_slice(&INDICES),
-                usage: wgpu::BufferUsages::INDEX,
-            });
-
         Self {
-            vertices,
-            indices,
             solid: solid::Pipeline::new(device, format, &constant_layout),
             gradient: gradient::Pipeline::new(device, format, &constant_layout),
             layers: Vec::new(),
@@ -105,11 +86,6 @@ impl Pipeline {
                 bounds.width,
                 bounds.height,
             );
-            render_pass.set_index_buffer(
-                self.indices.slice(..),
-                wgpu::IndexFormat::Uint16,
-            );
-            render_pass.set_vertex_buffer(0, self.vertices.slice(..));
 
             let mut solid_offset = 0;
             let mut gradient_offset = 0;
@@ -311,43 +287,6 @@ fn color_target_state(
     })]
 }
 
-#[repr(C)]
-#[derive(Clone, Copy, bytemuck::Zeroable, bytemuck::Pod)]
-pub struct Vertex {
-    _position: [f32; 2],
-}
-
-impl Vertex {
-    fn buffer_layout<'a>() -> wgpu::VertexBufferLayout<'a> {
-        wgpu::VertexBufferLayout {
-            array_stride: mem::size_of::<Self>() as u64,
-            step_mode: wgpu::VertexStepMode::Vertex,
-            attributes: &[wgpu::VertexAttribute {
-                shader_location: 0,
-                format: wgpu::VertexFormat::Float32x2,
-                offset: 0,
-            }],
-        }
-    }
-}
-
-const INDICES: [u16; 6] = [0, 1, 2, 0, 2, 3];
-
-const VERTICES: [Vertex; 4] = [
-    Vertex {
-        _position: [0.0, 0.0],
-    },
-    Vertex {
-        _position: [1.0, 0.0],
-    },
-    Vertex {
-        _position: [1.0, 1.0],
-    },
-    Vertex {
-        _position: [0.0, 1.0],
-    },
-];
-
 #[repr(C)]
 #[derive(Debug, Clone, Copy, bytemuck::Zeroable, bytemuck::Pod)]
 struct Uniforms {
-- 
cgit