src/video_core/host_shaders/convert_r16g16_to_d24s8.frag


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// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#version 450
#extension GL_ARB_shader_stencil_export : require

layout(binding = 0) uniform sampler2D color_texture;

void main() {
    ivec2 coord = ivec2(gl_FragCoord.xy);
    vec4 color = texelFetch(color_texture, coord, 0).rgba;
    uvec2 bytes = uvec2(color.rg * (exp2(16) - 1.0f)) << uvec2(0, 16);
    uint depth_stencil_unorm =
        uint(color.r * (exp2(16) - 1.0f)) | (uint(color.g * (exp2(16) - 1.0f)) << 16);

    gl_FragDepth = float(depth_stencil_unorm & 0x00FFFFFFu) / (exp2(24.0) - 1.0f);
    gl_FragStencilRefARB = int(depth_stencil_unorm >> 24);
}