Module web_glitz::extensions::texture_float_linear

Allows samplers that use linear interpolation to sample textures that use a 32-bit floating point internal format.

When this extension is available, a Sampler that uses a Linear, LinearMipmapNearest, LinearMipmapLinear or [NearestMipMapLinear] as its MinificationFilter, or that uses Linear as its MagnificationFilter, is allowed to sample textures that use one of the following internal formats:

• R32F
• RG32F
• RGB32F
• RGBA32F

This extension uses an Extended wrapper type to act as a type proof for the availability of this extension without requiring additional runtime checks when creating a sampled texture resource.

Example

use web_glitz::extensions::texture_float_linear::Extension as TextureFloatLinearExtension;
use web_glitz::image::MipmapLevels;
use web_glitz::image::format::RGBA32F;
use web_glitz::image::texture_2d::Texture2DDescriptor;
use web_glitz::image::sampler::{SamplerDescriptor, NearestMipmapLinear, Linear};
use web_glitz::rendering::{RenderTargetDescriptor, LoadOp, StoreOp};

let texture = context.try_create_texture_2d(&Texture2DDescriptor {
        format: RGBA32F,
        width: 500,
        height: 500,
        levels: MipmapLevels::Partial(1)
    }).unwrap();

let sampler = context.create_sampler(&SamplerDescriptor {
    minification_filter: NearestMipmapLinear,
    magnification_filter: Linear,
    ..SamplerDescriptor::default()
});

let extension: Option<TextureFloatLinearExtension> = context.get_extension();

if let Some(extension) = extension {
    let sampled_texture_resource = texture.float_sampled(extension.extend(&sampler));
}

Here context is a [RenderingContext].

Structs

Extended	Wrapper type for samplers that acts as a type proof for the availability of this extension, allowing the combination of samplers that use linear filtering with textures that use a floating point internal format.
Extension	Extension object for the [texture_float_linear] extension.

Traits

CompatibleFilter	Marker trait for filter-format combinations that become compatible when this extension is available.
Filterable	Marker trait for internal formats that become filterable when this extension is available.