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refactor: removed egui-wgpu and egui-winit dependencies. Updated wini…
…t/wgpu
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Original file line number | Diff line number | Diff line change |
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// Vertex shader | ||
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struct VertexOutput { | ||
@builtin(position) position: vec4<f32>, | ||
@location(0) v_uv: vec2<f32>, | ||
@location(1) v_color: vec4<f32>, // gamma 0-1 | ||
}; | ||
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struct Output { | ||
screen_size: vec2<f32>, | ||
// Uniform buffers need to be at least 16 bytes in WebGL. | ||
// See https://github.com/gfx-rs/wgpu/issues/2072 | ||
_padding: vec2<u32>, | ||
}; | ||
@group(0) @binding(0) var<uniform> out: Output; | ||
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// 0-1 linear from 0-1 sRGB gamma | ||
fn linear_from_gamma_rgb(srgb: vec3<f32>) -> vec3<f32> { | ||
let cutoff = srgb < vec3<f32>(0.04045); | ||
let lower = srgb / vec3<f32>(12.92); | ||
let higher = pow((srgb + vec3<f32>(0.055)) / vec3<f32>(1.055), vec3<f32>(2.4)); | ||
return select(higher, lower, cutoff); | ||
} | ||
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// 0-1 sRGB gamma from 0-1 linear | ||
fn gamma_from_linear_rgb(rgb: vec3<f32>) -> vec3<f32> { | ||
let cutoff = rgb < vec3<f32>(0.0031308); | ||
let lower = rgb * vec3<f32>(12.92); | ||
let higher = vec3<f32>(1.055) * pow(rgb, vec3<f32>(1.0 / 2.4)) - vec3<f32>(0.055); | ||
return select(higher, lower, cutoff); | ||
} | ||
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// 0-1 sRGBA gamma from 0-1 linear | ||
fn gamma_from_linear_rgba(linear_rgba: vec4<f32>) -> vec4<f32> { | ||
return vec4<f32>(gamma_from_linear_rgb(linear_rgba.rgb), linear_rgba.a); | ||
} | ||
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// [u8; 4] SRGB as u32 -> [r, g, b, a] in 0.-1 | ||
fn unpack_color(color: u32) -> vec4<f32> { | ||
return vec4<f32>( | ||
f32(color & 255u), | ||
f32((color >> 8u) & 255u), | ||
f32((color >> 16u) & 255u), | ||
f32((color >> 24u) & 255u), | ||
) / 255.0; | ||
} | ||
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fn position_from_screen(screen_pos: vec2<f32>) -> vec4<f32> { | ||
return vec4<f32>( | ||
2.0 * screen_pos.x / out.screen_size.x - 1.0, | ||
1.0 - 2.0 * screen_pos.y / out.screen_size.y, | ||
0.0, | ||
1.0, | ||
); | ||
} | ||
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@vertex | ||
fn vs_main( | ||
@location(0) v_pos: vec2<f32>, | ||
@location(1) v_uv: vec2<f32>, | ||
@location(2) v_color: u32, | ||
) -> VertexOutput { | ||
var out: VertexOutput; | ||
out.v_uv = v_uv; | ||
out.v_color = unpack_color(v_color); | ||
out.position = position_from_screen(v_pos); | ||
return out; | ||
} | ||
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// Fragment shader | ||
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@group(1) @binding(0) var tex: texture_2d<f32>; | ||
@group(1) @binding(1) var tex_sampler: sampler; | ||
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@fragment | ||
fn fs_main( | ||
@location(0) v_uv: vec2<f32>, | ||
@location(1) v_color: vec4<f32> | ||
) -> @location(0) vec4<f32> { | ||
let tex = textureSample(tex, tex_sampler, v_uv); | ||
let tex_gamma = gamma_from_linear_rgba(tex); | ||
return v_color * tex_gamma; | ||
} |
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