Fixed some more imports/documentation.

glow/src/triangle/gradient.rs

@@ -22,8 +22,7 @@ pub struct GradientUniformData {
 struct GradientUniformLocations {
     gradient_direction_location: <Context as HasContext>::UniformLocation,
     color_stops_size_location: <Context as HasContext>::UniformLocation,
-    //currently the maximum number of stops is 64 due to needing to allocate the
-    //memory for the array of stops with a const value in GLSL
+    //currently the maximum number of stops is 16 due to lack of SSBO in GL2.1
     color_stops_location: <Context as HasContext>::UniformLocation,
     transform_location: <Context as HasContext>::UniformLocation,
 }
@@ -140,7 +139,7 @@ impl GradientUniformData {
 
         let transform_location =
             unsafe { gl.get_uniform_location(program, "u_Transform") }
-                .expect("Get transform location.");
+                .expect("Gradient - Get u_Transform.");
 
         GradientUniformData {
             gradient: Gradient::Linear(Linear {

glow/src/triangle/solid.rs

@@ -25,12 +25,12 @@ impl SolidUniformData {
             color_location: unsafe {
                 gl.get_uniform_location(program, "color")
             }
-                .expect("Solid - Color uniform location."),
+            .expect("Solid - Get color."),
             transform: Transformation::identity(),
             transform_location: unsafe {
                 gl.get_uniform_location(program, "u_Transform")
             }
-                .expect("Get transform location."),
+            .expect("Solid - Get u_Transform."),
         }
     }
 }
@@ -74,10 +74,13 @@ impl SolidProgram {
         }
     }
 
-    pub fn use_program(&mut self, gl: &Context, color: &Color, transform: &Transformation) {
-        unsafe {
-            gl.use_program(Some(self.program))
-        }
+    pub fn use_program(
+        &mut self,
+        gl: &Context,
+        color: &Color,
+        transform: &Transformation,
+    ) {
+        unsafe { gl.use_program(Some(self.program)) }
         self.write_uniforms(gl, color, transform)
     }
 }

graphics/src/gradient.rs

@@ -3,8 +3,7 @@ mod linear;
 
 pub use crate::gradient::linear::Linear;
 use crate::widget::canvas::frame::Transform;
-use crate::Point;
-use iced_native::Color;
+use crate::{Point, Color};
 
 #[derive(Debug, Clone, PartialEq)]
 /// A fill which transitions colors progressively along a direction, either linearly, radially (TBD),

graphics/src/widget/canvas/fill.rs

@@ -42,7 +42,7 @@ impl<'a> From<Color> for Fill<'a> {
     }
 }
 
-/// The color or gradient of a [`Fill`].
+/// The style of a [`Fill`].
 #[derive(Debug, Clone)]
 pub enum Style<'a> {
     /// A solid color

graphics/src/widget/canvas/stroke.rs

@@ -1,4 +1,4 @@
-//! Create lines from a [crate::widget::canvas::Path] and render with various attributes/styles.
+//! Create lines from a [crate::widget::canvas::Path] and assigns them various attributes/styles.
 
 use iced_native::Color;
 use crate::gradient::Gradient;
@@ -60,7 +60,7 @@ impl<'a> Default for Stroke<'a> {
     }
 }
 
-/// The color or gradient of a [`Stroke`].
+/// The style of a [`Stroke`].
 #[derive(Debug, Clone, Copy)]
 pub enum Style<'a> {
     /// A solid color

wgpu/src/buffers.rs

@@ -88,7 +88,7 @@ impl<T: Pod + Zeroable> StaticBuffer<T> {
         let bytes = bytemuck::cast_slice(content);
         let bytes_size = bytes.len() as u64;
 
-        if let Some(buffer_size) = wgpu::BufferSize::new(bytes_size as u64) {
+        if let Some(buffer_size) = wgpu::BufferSize::new(bytes_size) {
             let mut buffer = staging_belt.write_buffer(
                 encoder,
                 &self.gpu,

wgpu/src/buffers/dynamic.rs

@@ -50,6 +50,7 @@ impl DynamicBufferType {
     }
 }
 
+/// A dynamic buffer is any type of buffer which does not have a static offset.
 pub(crate) struct DynamicBuffer<T: ShaderType> {
     offsets: Vec<wgpu::DynamicOffset>,
     cpu: DynamicBufferType,
@@ -124,13 +125,15 @@ impl<T: ShaderType + WriteInto> DynamicBuffer<T> {
     /// Write a new value to the CPU buffer with proper alignment. Stores the returned offset value
     /// in the buffer for future use.
     pub fn push(&mut self, value: &T) {
-        //this write operation on the buffer will adjust for uniform alignment requirements
+        //this write operation on the cpu buffer will adjust for uniform alignment requirements
         let offset = self.cpu.write(value);
         self.offsets.push(offset as u32);
     }
 
     /// Resize buffer contents if necessary. This will re-create the GPU buffer if current size is
     /// less than the newly computed size from the CPU buffer.
+    ///
+    /// If the gpu buffer is resized, its bind group will need to be recreated!
     pub fn resize(&mut self, device: &wgpu::Device) -> bool {
         let new_size = self.cpu.get_ref().len() as u64;
 
@@ -144,7 +147,6 @@ impl<T: ShaderType + WriteInto> DynamicBuffer<T> {
                 }
             };
 
-            //Re-create the GPU buffer since it needs to be resized.
             self.gpu = DynamicBuffer::<T>::create_gpu_buffer(
                 device, self.label, usages, new_size,
             );

wgpu/src/shader/triangle_gradient.wgsl

@@ -1,9 +1,8 @@
-// uniforms
 struct GradientUniforms {
     transform: mat4x4<f32>,
     //xy = start, wz = end
     position: vec4<f32>,
-    //x = start, y = end, zw = padding
+    //x = start stop, y = end stop, zw = padding
     stop_range: vec4<i32>,
 }
 
@@ -32,6 +31,7 @@ fn vs_main(@location(0) input: vec2<f32>) -> VertexOutput {
     return output;
 }
 
+//TODO: rewrite without branching
 @fragment
 fn fs_gradient(input: VertexOutput) -> @location(0) vec4<f32> {
     let start = uniforms.position.xy;

wgpu/src/shader/triangle_solid.wgsl

@@ -1,4 +1,3 @@
-// uniforms
 struct SolidUniforms {
     transform: mat4x4<f32>,
     color: vec4<f32>

wgpu/src/triangle.rs

@@ -12,9 +12,9 @@ use crate::triangle::solid::SolidPipeline;
 pub use iced_graphics::triangle::{Mesh2D, Vertex2D};
 use layer::mesh;
 
+mod solid;
 mod gradient;
 mod msaa;
-mod solid;
 
 /// Triangle pipeline for all mesh layers in a [`iced_graphics::Canvas`] widget.
 #[derive(Debug)]
@@ -60,7 +60,7 @@ impl TrianglePipelines {
 }
 
 impl Pipeline {
-    /// Creates supported GL programs, listed in [TrianglePipelines].
+    /// Creates supported pipelines, listed in [TrianglePipelines].
     pub fn new(
         device: &wgpu::Device,
         format: wgpu::TextureFormat,

wgpu/src/triangle/gradient.rs

@@ -26,7 +26,7 @@ pub(super) struct GradientUniforms {
     transform: glam::Mat4,
     //xy = start, zw = end
     direction: Vec4,
-    //x = start, y = end, zw = padding
+    //x = start stop, y = end stop, zw = padding
     stop_range: IVec4,
 }
 
@@ -55,7 +55,7 @@ impl GradientPipeline {
         );
 
         //Note: with a WASM target storage buffers are not supported. Will need to use UBOs & static
-        // sized array (eg like the 64-sized array on OpenGL side right now) to make gradients work
+        // sized array (eg like the 32-sized array on OpenGL side right now) to make gradients work
         let storage_buffer = DynamicBuffer::storage(
             device,
             "iced_wgpu::triangle [GRADIENT] storage",

wgpu/src/triangle/solid.rs

@@ -10,13 +10,13 @@ use iced_graphics::Transformation;
 
 pub struct SolidPipeline {
     pipeline: wgpu::RenderPipeline,
-    pub(crate) buffer: DynamicBuffer<SolidUniforms>,
+    pub(super) buffer: DynamicBuffer<SolidUniforms>,
     bind_group_layout: wgpu::BindGroupLayout,
     bind_group: wgpu::BindGroup,
 }
 
 #[derive(Debug, Clone, Copy, ShaderType)]
-pub struct SolidUniforms {
+pub(super) struct SolidUniforms {
     transform: glam::Mat4,
     color: Vec4,
 }