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// SPDX-FileCopyrightText: Copyright 2023 Your Project
// SPDX-License-Identifier: GPL-2.0-or-later
#version 450
layout(binding = 0) uniform sampler2D color_texture;
void main() {
ivec2 coord = ivec2(gl_FragCoord.xy);
vec4 color = texelFetch(color_texture, coord, 0).abgr;
uvec4 bytes = uvec4(color * (exp2(8) - 1.0f)) << uvec4(24, 16, 8, 0);
uint depth_unorm = bytes.x | bytes.y | bytes.z | bytes.w;
float depth_float = uintBitsToFloat(depth_unorm);
gl_FragDepth = depth_float;
}
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