Use Image::default for 1 pixel white texture directly (bevyengine#7884)

for place holder image, it should use `default` directly.

crates/bevy_pbr/src/render/mesh.rs

@@ -484,12 +484,7 @@ impl FromWorld for MeshPipeline {
 
  // A 1x1x1 'all 1.0' texture to use as a dummy texture to use in place of optional StandardMaterial textures
  let dummy_white_gpu_image = {
- let image = Image::new_fill(
- Extent3d::default(),
- TextureDimension::D2,
- &[255u8; 4],
- TextureFormat::bevy_default(),
- );
+ let image = Image::default();
  let texture = render_device.create_texture(&image.texture_descriptor);
  let sampler = match image.sampler_descriptor {
  ImageSampler::Default => (**default_sampler).clone(),

crates/bevy_render/src/texture/image.rs

@@ -172,6 +172,7 @@ impl ImageSampler {
 pub struct DefaultImageSampler(pub(crate) Sampler);
 
 impl Default for Image {
+ /// default is a 1x1x1 all '1.0' texture
  fn default() -> Self {
  let format = wgpu::TextureFormat::bevy_default();
  let data = vec![255; format.pixel_size()];

crates/bevy_sprite/src/mesh2d/mesh.rs

@@ -208,12 +208,7 @@ impl FromWorld for Mesh2dPipeline {
  });
  // A 1x1x1 'all 1.0' texture to use as a dummy texture to use in place of optional StandardMaterial textures
  let dummy_white_gpu_image = {
- let image = Image::new_fill(
- Extent3d::default(),
- TextureDimension::D2,
- &[255u8; 4],
- TextureFormat::bevy_default(),
- );
+ let image = Image::default();
  let texture = render_device.create_texture(&image.texture_descriptor);
  let sampler = match image.sampler_descriptor {
  ImageSampler::Default => (**default_sampler).clone(),

crates/bevy_sprite/src/render/mod.rs

@@ -91,12 +91,7 @@ impl FromWorld for SpritePipeline {
  label: Some("sprite_material_layout"),
  });
  let dummy_white_gpu_image = {
- let image = Image::new_fill(
- Extent3d::default(),
- TextureDimension::D2,
- &[255u8; 4],
- TextureFormat::bevy_default(),
- );
+ let image = Image::default();
  let texture = render_device.create_texture(&image.texture_descriptor);
  let sampler = match image.sampler_descriptor {
  ImageSampler::Default => (**default_sampler).clone(),