radiant-rs 0.15.0

Thread-safe Rust sprite rendering engine with a friendly API and custom shader support
Documentation 
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// Texture fragment preamble — automatically prepended to custom texture fragment shaders.
// Provides bindings, TextureFragmentInput, and sheet*() helpers.
// Custom shaders write: @fragment fn main(input: TextureFragmentInput) -> @location(0) vec4<f32>
// Use texture_uniforms._rd_flags.xyzw to receive up to 4 custom float params via set_uniform().

struct TextureUniforms {
    u_view: mat4x4<f32>,
    u_model: mat4x4<f32>,
    _rd_color: vec4<f32>,
    _rd_offset: vec2<f32>,
    _rd_dimensions: vec2<f32>,
    _rd_flags: vec4<f32>,
}

@group(0) @binding(0)
var<uniform> texture_uniforms: TextureUniforms;
@group(0) @binding(1)
var _rd_tex: texture_2d<f32>;
@group(0) @binding(2)
var _rd_sampler: sampler;

struct TextureFragmentInput {
    @builtin(position) position: vec4<f32>,
    @location(0) v_color: vec4<f32>,
    @location(1) v_tex_coords: vec2<f32>,
}

fn sheet(texture_coords: vec2<f32>) -> vec4<f32> {
    return textureSample(_rd_tex, _rd_sampler, texture_coords);
}

fn sheetSize() -> vec2<i32> {
    return vec2<i32>(textureDimensions(_rd_tex));
}

fn sheetComponent(texture_coords: vec2<f32>, component: u32) -> vec4<f32> {
    if (component == 0u) {
        return sheet(texture_coords);
    }
    return vec4<f32>(0.0, 0.0, 0.0, 0.0);
}