module shaders.offscreen;
import sg = sokol.gfx;
import m = handmade.math;
extern(C):

/*
    #version:1# (machine generated, don't edit!)

    Generated by sokol-shdc (https://github.com/floooh/sokol-tools)

    Cmdline:
        sokol-shdc -i src/examples/shaders/offscreen.glsl -o src/examples/shaders/offscreen.d -l glsl410:metal_macos:hlsl5:glsl300es:wgsl -f sokol_d

    Overview:
    =========
    Shader program: 'default':
        Get shader desc: defaultShaderDesc(sg.queryBackend());
        Vertex Shader: vs_default
        Fragment Shader: fs_default
        Attributes:
            ATTR_DEFAULT_POSITION => 0
            ATTR_DEFAULT_NORMAL => 1
            ATTR_DEFAULT_TEXCOORD0 => 2
    Shader program: 'offscreen':
        Get shader desc: offscreenShaderDesc(sg.queryBackend());
        Vertex Shader: vs_offscreen
        Fragment Shader: fs_offscreen
        Attributes:
            ATTR_OFFSCREEN_POSITION => 0
            ATTR_OFFSCREEN_NORMAL => 1
    Bindings:
        Uniform block 'vs_params':
            D struct: VsParams
            Bind slot: UB_VS_PARAMS => 0
        Image 'tex':
            Image type: sg.ImageType._2d
            Sample type: sg.ImageSampleType.Float
            Multisampled: false
            Bind slot: IMG_TEX => 0
        Sampler 'smp':
            Type: sg.SamplerType.Filtering
            Bind slot: SMP_SMP => 0
        Image Sampler Pair 'tex_smp':
            Image: tex
            Sampler: smp
*/
enum ATTR_DEFAULT_POSITION = 0;
enum ATTR_DEFAULT_NORMAL = 1;
enum ATTR_DEFAULT_TEXCOORD0 = 2;
enum ATTR_OFFSCREEN_POSITION = 0;
enum ATTR_OFFSCREEN_NORMAL = 1;
enum UB_VS_PARAMS = 0;
enum IMG_TEX = 0;
enum SMP_SMP = 0;
struct VsParams {
    align(16) m.Mat4 mvp;
}
/*
    #version 410

    uniform vec4 vs_params[4];
    layout(location = 0) in vec4 position;
    layout(location = 0) out vec4 nrm;
    layout(location = 1) in vec4 normal;

    void main()
    {
        gl_Position = mat4(vs_params[0], vs_params[1], vs_params[2], vs_params[3]) * position;
        nrm = normal;
    }

*/
__gshared char[280] VS_OFFSCREEN_SOURCE_GLSL410 = [
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];
/*
    #version 410

    layout(location = 0) out vec4 frag_color;
    layout(location = 0) in vec4 nrm;

    void main()
    {
        frag_color = vec4((nrm.xyz * 0.5) + vec3(0.5), 1.0);
    }

*/
__gshared char[166] FS_OFFSCREEN_SOURCE_GLSL410 = [
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];
/*
    #version 410

    uniform vec4 vs_params[4];
    layout(location = 0) in vec4 position;
    layout(location = 1) out vec2 uv;
    layout(location = 2) in vec2 texcoord0;
    layout(location = 0) out vec4 nrm;
    layout(location = 1) in vec4 normal;

    void main()
    {
        mat4 _22 = mat4(vs_params[0], vs_params[1], vs_params[2], vs_params[3]);
        gl_Position = _22 * position;
        uv = texcoord0;
        nrm = _22 * normal;
    }

*/
__gshared char[400] VS_DEFAULT_SOURCE_GLSL410 = [
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/*
    #version 410

    uniform sampler2D tex_smp;

    layout(location = 1) in vec2 uv;
    layout(location = 0) in vec4 nrm;
    layout(location = 0) out vec4 frag_color;

    void main()
    {
        frag_color = vec4(texture(tex_smp, uv * vec2(20.0, 10.0)).xyz * fma(clamp(dot(nrm.xyz, vec3(0.57735025882720947265625, 0.57735025882720947265625, -0.57735025882720947265625)), 0.0, 1.0), 2.0, 0.25), 1.0);
    }

*/
__gshared char[379] FS_DEFAULT_SOURCE_GLSL410 = [
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/*
    #version 300 es

    uniform vec4 vs_params[4];
    layout(location = 0) in vec4 position;
    out vec4 nrm;
    layout(location = 1) in vec4 normal;

    void main()
    {
        gl_Position = mat4(vs_params[0], vs_params[1], vs_params[2], vs_params[3]) * position;
        nrm = normal;
    }

*/
__gshared char[262] VS_OFFSCREEN_SOURCE_GLSL300ES = [
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];
/*
    #version 300 es
    precision mediump float;
    precision highp int;

    layout(location = 0) out highp vec4 frag_color;
    in highp vec4 nrm;

    void main()
    {
        frag_color = vec4((nrm.xyz * 0.5) + vec3(0.5), 1.0);
    }

*/
__gshared char[206] FS_OFFSCREEN_SOURCE_GLSL300ES = [
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];
/*
    #version 300 es

    uniform vec4 vs_params[4];
    layout(location = 0) in vec4 position;
    out vec2 uv;
    layout(location = 2) in vec2 texcoord0;
    out vec4 nrm;
    layout(location = 1) in vec4 normal;

    void main()
    {
        mat4 _22 = mat4(vs_params[0], vs_params[1], vs_params[2], vs_params[3]);
        gl_Position = _22 * position;
        uv = texcoord0;
        nrm = _22 * normal;
    }

*/
__gshared char[361] VS_DEFAULT_SOURCE_GLSL300ES = [
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];
/*
    #version 300 es
    precision mediump float;
    precision highp int;

    uniform highp sampler2D tex_smp;

    in highp vec2 uv;
    in highp vec4 nrm;
    layout(location = 0) out highp vec4 frag_color;

    void main()
    {
        frag_color = vec4(texture(tex_smp, uv * vec2(20.0, 10.0)).xyz * (clamp(dot(nrm.xyz, vec3(0.57735025882720947265625, 0.57735025882720947265625, -0.57735025882720947265625)), 0.0, 1.0) * 2.0 + 0.25), 1.0);
    }

*/
__gshared char[409] FS_DEFAULT_SOURCE_GLSL300ES = [
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/*
    cbuffer vs_params : register(b0)
    {
        row_major float4x4 _19_mvp : packoffset(c0);
    };


    static float4 gl_Position;
    static float4 position;
    static float4 nrm;
    static float4 normal;

    struct SPIRV_Cross_Input
    {
        float4 position : TEXCOORD0;
        float4 normal : TEXCOORD1;
    };

    struct SPIRV_Cross_Output
    {
        float4 nrm : TEXCOORD0;
        float4 gl_Position : SV_Position;
    };

    void vert_main()
    {
        gl_Position = mul(position, _19_mvp);
        nrm = normal;
    }

    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
    {
        position = stage_input.position;
        normal = stage_input.normal;
        vert_main();
        SPIRV_Cross_Output stage_output;
        stage_output.gl_Position = gl_Position;
        stage_output.nrm = nrm;
        return stage_output;
    }
*/
__gshared char[738] VS_OFFSCREEN_SOURCE_HLSL5 = [
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];
/*
    static float4 frag_color;
    static float4 nrm;

    struct SPIRV_Cross_Input
    {
        float4 nrm : TEXCOORD0;
    };

    struct SPIRV_Cross_Output
    {
        float4 frag_color : SV_Target0;
    };

    void frag_main()
    {
        frag_color = float4((nrm.xyz * 0.5f) + 0.5f.xxx, 1.0f);
    }

    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
    {
        nrm = stage_input.nrm;
        frag_main();
        SPIRV_Cross_Output stage_output;
        stage_output.frag_color = frag_color;
        return stage_output;
    }
*/
__gshared char[463] FS_OFFSCREEN_SOURCE_HLSL5 = [
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];
/*
    cbuffer vs_params : register(b0)
    {
        row_major float4x4 _19_mvp : packoffset(c0);
    };


    static float4 gl_Position;
    static float4 position;
    static float2 uv;
    static float2 texcoord0;
    static float4 nrm;
    static float4 normal;

    struct SPIRV_Cross_Input
    {
        float4 position : TEXCOORD0;
        float4 normal : TEXCOORD1;
        float2 texcoord0 : TEXCOORD2;
    };

    struct SPIRV_Cross_Output
    {
        float4 nrm : TEXCOORD0;
        float2 uv : TEXCOORD1;
        float4 gl_Position : SV_Position;
    };

    void vert_main()
    {
        gl_Position = mul(position, _19_mvp);
        uv = texcoord0;
        nrm = mul(normal, _19_mvp);
    }

    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
    {
        position = stage_input.position;
        texcoord0 = stage_input.texcoord0;
        normal = stage_input.normal;
        vert_main();
        SPIRV_Cross_Output stage_output;
        stage_output.gl_Position = gl_Position;
        stage_output.uv = uv;
        stage_output.nrm = nrm;
        return stage_output;
    }
*/
__gshared char[941] VS_DEFAULT_SOURCE_HLSL5 = [
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];
/*
    Texture2D<float4> tex : register(t0);
    SamplerState smp : register(s0);

    static float2 uv;
    static float4 nrm;
    static float4 frag_color;

    struct SPIRV_Cross_Input
    {
        float4 nrm : TEXCOORD0;
        float2 uv : TEXCOORD1;
    };

    struct SPIRV_Cross_Output
    {
        float4 frag_color : SV_Target0;
    };

    void frag_main()
    {
        frag_color = float4(tex.Sample(smp, uv * float2(20.0f, 10.0f)).xyz * mad(clamp(dot(nrm.xyz, float3(0.57735025882720947265625f, 0.57735025882720947265625f, -0.57735025882720947265625f)), 0.0f, 1.0f), 2.0f, 0.25f), 1.0f);
    }

    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
    {
        uv = stage_input.uv;
        nrm = stage_input.nrm;
        frag_main();
        SPIRV_Cross_Output stage_output;
        stage_output.frag_color = frag_color;
        return stage_output;
    }
*/
__gshared char[769] FS_DEFAULT_SOURCE_HLSL5 = [
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/*
    #include <metal_stdlib>
    #include <simd/simd.h>

    using namespace metal;

    struct vs_params
    {
        float4x4 mvp;
    };

    struct main0_out
    {
        float4 nrm [[user(locn0)]];
        float4 gl_Position [[position]];
    };

    struct main0_in
    {
        float4 position [[attribute(0)]];
        float4 normal [[attribute(1)]];
    };

    vertex main0_out main0(main0_in in [[stage_in]], constant vs_params& _19 [[buffer(0)]])
    {
        main0_out out = {};
        out.gl_Position = _19.mvp * in.position;
        out.nrm = in.normal;
        return out;
    }

*/
__gshared char[505] VS_OFFSCREEN_SOURCE_METAL_MACOS = [
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];
/*
    #include <metal_stdlib>
    #include <simd/simd.h>

    using namespace metal;

    struct main0_out
    {
        float4 frag_color [[color(0)]];
    };

    struct main0_in
    {
        float4 nrm [[user(locn0)]];
    };

    fragment main0_out main0(main0_in in [[stage_in]])
    {
        main0_out out = {};
        out.frag_color = float4((in.nrm.xyz * 0.5) + float3(0.5), 1.0);
        return out;
    }

*/
__gshared char[350] FS_OFFSCREEN_SOURCE_METAL_MACOS = [
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];
/*
    #include <metal_stdlib>
    #include <simd/simd.h>

    using namespace metal;

    struct vs_params
    {
        float4x4 mvp;
    };

    struct main0_out
    {
        float4 nrm [[user(locn0)]];
        float2 uv [[user(locn1)]];
        float4 gl_Position [[position]];
    };

    struct main0_in
    {
        float4 position [[attribute(0)]];
        float4 normal [[attribute(1)]];
        float2 texcoord0 [[attribute(2)]];
    };

    vertex main0_out main0(main0_in in [[stage_in]], constant vs_params& _19 [[buffer(0)]])
    {
        main0_out out = {};
        out.gl_Position = _19.mvp * in.position;
        out.uv = in.texcoord0;
        out.nrm = _19.mvp * in.normal;
        return out;
    }

*/
__gshared char[612] VS_DEFAULT_SOURCE_METAL_MACOS = [
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/*
    #include <metal_stdlib>
    #include <simd/simd.h>

    using namespace metal;

    struct main0_out
    {
        float4 frag_color [[color(0)]];
    };

    struct main0_in
    {
        float4 nrm [[user(locn0)]];
        float2 uv [[user(locn1)]];
    };

    fragment main0_out main0(main0_in in [[stage_in]], texture2d<float> tex [[texture(0)]], sampler smp [[sampler(0)]])
    {
        main0_out out = {};
        out.frag_color = float4(tex.sample(smp, (in.uv * float2(20.0, 10.0))).xyz * fma(fast::clamp(dot(in.nrm.xyz, float3(0.57735025882720947265625, 0.57735025882720947265625, -0.57735025882720947265625)), 0.0, 1.0), 2.0, 0.25), 1.0);
        return out;
    }

*/
__gshared char[610] FS_DEFAULT_SOURCE_METAL_MACOS = [
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/*
    diagnostic(off, derivative_uniformity);

    struct vs_params {
      /_ @offset(0) _/
      mvp : mat4x4f,
    }

    @group(0) @binding(0) var<uniform> x_19 : vs_params;

    var<private> position_1 : vec4f;

    var<private> nrm : vec4f;

    var<private> normal : vec4f;

    var<private> gl_Position : vec4f;

    fn main_1() {
      let x_22 : mat4x4f = x_19.mvp;
      let x_25 : vec4f = position_1;
      gl_Position = (x_22 * x_25);
      let x_31 : vec4f = normal;
      nrm = x_31;
      return;
    }

    struct main_out {
      @builtin(position)
      gl_Position : vec4f,
      @location(0)
      nrm_1 : vec4f,
    }

    @vertex
    fn main(@location(0) position_1_param : vec4f, @location(1) normal_param : vec4f) -> main_out {
      position_1 = position_1_param;
      normal = normal_param;
      main_1();
      return main_out(gl_Position, nrm);
    }

*/
__gshared char[758] VS_OFFSCREEN_SOURCE_WGSL = [
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/*
    diagnostic(off, derivative_uniformity);

    var<private> frag_color : vec4f;

    var<private> nrm : vec4f;

    fn main_1() {
      let x_13 : vec4f = nrm;
      let x_18 : vec3f = ((vec3f(x_13.x, x_13.y, x_13.z) * 0.5f) + vec3f(0.5f, 0.5f, 0.5f));
      frag_color = vec4f(x_18.x, x_18.y, x_18.z, 1.0f);
      return;
    }

    struct main_out {
      @location(0)
      frag_color_1 : vec4f,
    }

    @fragment
    fn main(@location(0) nrm_param : vec4f) -> main_out {
      nrm = nrm_param;
      main_1();
      return main_out(frag_color);
    }

*/
__gshared char[486] FS_OFFSCREEN_SOURCE_WGSL = [
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/*
    diagnostic(off, derivative_uniformity);

    struct vs_params {
      /_ @offset(0) _/
      mvp : mat4x4f,
    }

    @group(0) @binding(0) var<uniform> x_19 : vs_params;

    var<private> position_1 : vec4f;

    var<private> uv : vec2f;

    var<private> texcoord0 : vec2f;

    var<private> nrm : vec4f;

    var<private> normal : vec4f;

    var<private> gl_Position : vec4f;

    fn main_1() {
      let x_22 : mat4x4f = x_19.mvp;
      let x_25 : vec4f = position_1;
      gl_Position = (x_22 * x_25);
      let x_34 : vec2f = texcoord0;
      uv = x_34;
      let x_37 : mat4x4f = x_19.mvp;
      let x_39 : vec4f = normal;
      nrm = (x_37 * x_39);
      return;
    }

    struct main_out {
      @builtin(position)
      gl_Position : vec4f,
      @location(1)
      uv_1 : vec2f,
      @location(0)
      nrm_1 : vec4f,
    }

    @vertex
    fn main(@location(0) position_1_param : vec4f, @location(2) texcoord0_param : vec2f, @location(1) normal_param : vec4f) -> main_out {
      position_1 = position_1_param;
      texcoord0 = texcoord0_param;
      normal = normal_param;
      main_1();
      return main_out(gl_Position, uv, nrm);
    }

*/
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];
/*
    diagnostic(off, derivative_uniformity);

    @group(1) @binding(64) var tex : texture_2d<f32>;

    @group(1) @binding(80) var smp : sampler;

    var<private> uv : vec2f;

    var<private> nrm : vec4f;

    var<private> frag_color : vec4f;

    fn main_1() {
      var c : vec4f;
      var l : f32;
      let x_23 : vec2f = uv;
      let x_28 : vec4f = textureSample(tex, smp, (x_23 * vec2f(20.0f, 10.0f)));
      c = x_28;
      let x_34 : vec4f = nrm;
      l = (clamp(dot(vec3f(x_34.x, x_34.y, x_34.z), vec3f(0.57735025882720947266f, 0.57735025882720947266f, -0.57735025882720947266f)), 0.0f, 1.0f) * 2.0f);
      let x_47 : vec4f = c;
      let x_49 : f32 = l;
      let x_52 : vec3f = (vec3f(x_47.x, x_47.y, x_47.z) * (x_49 + 0.25f));
      frag_color = vec4f(x_52.x, x_52.y, x_52.z, 1.0f);
      return;
    }

    struct main_out {
      @location(0)
      frag_color_1 : vec4f,
    }

    @fragment
    fn main(@location(1) uv_param : vec2f, @location(0) nrm_param : vec4f) -> main_out {
      uv = uv_param;
      nrm = nrm_param;
      main_1();
      return main_out(frag_color);
    }

*/
__gshared char[980] FS_DEFAULT_SOURCE_WGSL = [
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];
sg.ShaderDesc defaultShaderDesc(sg.Backend backend) @trusted @nogc nothrow {
    sg.ShaderDesc desc;
    desc.label = "default_shader";
    switch (backend) {
        case sg.Backend.Glcore:
            desc.vertex_func.source = &VS_DEFAULT_SOURCE_GLSL410[0];
            desc.vertex_func.entry = "main";
            desc.fragment_func.source = &FS_DEFAULT_SOURCE_GLSL410[0];
            desc.fragment_func.entry = "main";
            desc.attrs[0].glsl_name = "position";
            desc.attrs[1].glsl_name = "normal";
            desc.attrs[2].glsl_name = "texcoord0";
            desc.uniform_blocks[0].stage = sg.ShaderStage.Vertex;
            desc.uniform_blocks[0].layout = sg.UniformLayout.Std140;
            desc.uniform_blocks[0].size = 64;
            desc.uniform_blocks[0].glsl_uniforms[0].type = sg.UniformType.Float4;
            desc.uniform_blocks[0].glsl_uniforms[0].array_count = 4;
            desc.uniform_blocks[0].glsl_uniforms[0].glsl_name = "vs_params";
            desc.images[0].stage = sg.ShaderStage.Fragment;
            desc.images[0].multisampled = false;
            desc.images[0].image_type = sg.ImageType._2d;
            desc.images[0].sample_type = sg.ImageSampleType.Float;
            desc.samplers[0].stage = sg.ShaderStage.Fragment;
            desc.samplers[0].sampler_type = sg.SamplerType.Filtering;
            desc.image_sampler_pairs[0].stage = sg.ShaderStage.Fragment;
            desc.image_sampler_pairs[0].image_slot = 0;
            desc.image_sampler_pairs[0].sampler_slot = 0;
            desc.image_sampler_pairs[0].glsl_name = "tex_smp";
            break;
        case sg.Backend.Gles3:
            desc.vertex_func.source = &VS_DEFAULT_SOURCE_GLSL300ES[0];
            desc.vertex_func.entry = "main";
            desc.fragment_func.source = &FS_DEFAULT_SOURCE_GLSL300ES[0];
            desc.fragment_func.entry = "main";
            desc.attrs[0].glsl_name = "position";
            desc.attrs[1].glsl_name = "normal";
            desc.attrs[2].glsl_name = "texcoord0";
            desc.uniform_blocks[0].stage = sg.ShaderStage.Vertex;
            desc.uniform_blocks[0].layout = sg.UniformLayout.Std140;
            desc.uniform_blocks[0].size = 64;
            desc.uniform_blocks[0].glsl_uniforms[0].type = sg.UniformType.Float4;
            desc.uniform_blocks[0].glsl_uniforms[0].array_count = 4;
            desc.uniform_blocks[0].glsl_uniforms[0].glsl_name = "vs_params";
            desc.images[0].stage = sg.ShaderStage.Fragment;
            desc.images[0].multisampled = false;
            desc.images[0].image_type = sg.ImageType._2d;
            desc.images[0].sample_type = sg.ImageSampleType.Float;
            desc.samplers[0].stage = sg.ShaderStage.Fragment;
            desc.samplers[0].sampler_type = sg.SamplerType.Filtering;
            desc.image_sampler_pairs[0].stage = sg.ShaderStage.Fragment;
            desc.image_sampler_pairs[0].image_slot = 0;
            desc.image_sampler_pairs[0].sampler_slot = 0;
            desc.image_sampler_pairs[0].glsl_name = "tex_smp";
            break;
        case sg.Backend.D3d11:
            desc.vertex_func.source = &VS_DEFAULT_SOURCE_HLSL5[0];
            desc.vertex_func.d3d11_target = "vs_5_0";
            desc.vertex_func.entry = "main";
            desc.fragment_func.source = &FS_DEFAULT_SOURCE_HLSL5[0];
            desc.fragment_func.d3d11_target = "ps_5_0";
            desc.fragment_func.entry = "main";
            desc.attrs[0].hlsl_sem_name = "TEXCOORD";
            desc.attrs[0].hlsl_sem_index = 0;
            desc.attrs[1].hlsl_sem_name = "TEXCOORD";
            desc.attrs[1].hlsl_sem_index = 1;
            desc.attrs[2].hlsl_sem_name = "TEXCOORD";
            desc.attrs[2].hlsl_sem_index = 2;
            desc.uniform_blocks[0].stage = sg.ShaderStage.Vertex;
            desc.uniform_blocks[0].layout = sg.UniformLayout.Std140;
            desc.uniform_blocks[0].size = 64;
            desc.uniform_blocks[0].hlsl_register_b_n = 0;
            desc.images[0].stage = sg.ShaderStage.Fragment;
            desc.images[0].multisampled = false;
            desc.images[0].image_type = sg.ImageType._2d;
            desc.images[0].sample_type = sg.ImageSampleType.Float;
            desc.images[0].hlsl_register_t_n = 0;
            desc.samplers[0].stage = sg.ShaderStage.Fragment;
            desc.samplers[0].sampler_type = sg.SamplerType.Filtering;
            desc.samplers[0].hlsl_register_s_n = 0;
            desc.image_sampler_pairs[0].stage = sg.ShaderStage.Fragment;
            desc.image_sampler_pairs[0].image_slot = 0;
            desc.image_sampler_pairs[0].sampler_slot = 0;
            break;
        case sg.Backend.Metal_macos:
            desc.vertex_func.source = &VS_DEFAULT_SOURCE_METAL_MACOS[0];
            desc.vertex_func.entry = "main0";
            desc.fragment_func.source = &FS_DEFAULT_SOURCE_METAL_MACOS[0];
            desc.fragment_func.entry = "main0";
            desc.uniform_blocks[0].stage = sg.ShaderStage.Vertex;
            desc.uniform_blocks[0].layout = sg.UniformLayout.Std140;
            desc.uniform_blocks[0].size = 64;
            desc.uniform_blocks[0].msl_buffer_n = 0;
            desc.images[0].stage = sg.ShaderStage.Fragment;
            desc.images[0].multisampled = false;
            desc.images[0].image_type = sg.ImageType._2d;
            desc.images[0].sample_type = sg.ImageSampleType.Float;
            desc.images[0].msl_texture_n = 0;
            desc.samplers[0].stage = sg.ShaderStage.Fragment;
            desc.samplers[0].sampler_type = sg.SamplerType.Filtering;
            desc.samplers[0].msl_sampler_n = 0;
            desc.image_sampler_pairs[0].stage = sg.ShaderStage.Fragment;
            desc.image_sampler_pairs[0].image_slot = 0;
            desc.image_sampler_pairs[0].sampler_slot = 0;
            break;
        case sg.Backend.Wgpu:
            desc.vertex_func.source = &VS_DEFAULT_SOURCE_WGSL[0];
            desc.vertex_func.entry = "main";
            desc.fragment_func.source = &FS_DEFAULT_SOURCE_WGSL[0];
            desc.fragment_func.entry = "main";
            desc.uniform_blocks[0].stage = sg.ShaderStage.Vertex;
            desc.uniform_blocks[0].layout = sg.UniformLayout.Std140;
            desc.uniform_blocks[0].size = 64;
            desc.uniform_blocks[0].wgsl_group0_binding_n = 0;
            desc.images[0].stage = sg.ShaderStage.Fragment;
            desc.images[0].multisampled = false;
            desc.images[0].image_type = sg.ImageType._2d;
            desc.images[0].sample_type = sg.ImageSampleType.Float;
            desc.images[0].wgsl_group1_binding_n = 64;
            desc.samplers[0].stage = sg.ShaderStage.Fragment;
            desc.samplers[0].sampler_type = sg.SamplerType.Filtering;
            desc.samplers[0].wgsl_group1_binding_n = 80;
            desc.image_sampler_pairs[0].stage = sg.ShaderStage.Fragment;
            desc.image_sampler_pairs[0].image_slot = 0;
            desc.image_sampler_pairs[0].sampler_slot = 0;
            break;
        default: break;
    }
    return desc;
}
sg.ShaderDesc offscreenShaderDesc(sg.Backend backend) @trusted @nogc nothrow {
    sg.ShaderDesc desc;
    desc.label = "offscreen_shader";
    switch (backend) {
        case sg.Backend.Glcore:
            desc.vertex_func.source = &VS_OFFSCREEN_SOURCE_GLSL410[0];
            desc.vertex_func.entry = "main";
            desc.fragment_func.source = &FS_OFFSCREEN_SOURCE_GLSL410[0];
            desc.fragment_func.entry = "main";
            desc.attrs[0].glsl_name = "position";
            desc.attrs[1].glsl_name = "normal";
            desc.uniform_blocks[0].stage = sg.ShaderStage.Vertex;
            desc.uniform_blocks[0].layout = sg.UniformLayout.Std140;
            desc.uniform_blocks[0].size = 64;
            desc.uniform_blocks[0].glsl_uniforms[0].type = sg.UniformType.Float4;
            desc.uniform_blocks[0].glsl_uniforms[0].array_count = 4;
            desc.uniform_blocks[0].glsl_uniforms[0].glsl_name = "vs_params";
            break;
        case sg.Backend.Gles3:
            desc.vertex_func.source = &VS_OFFSCREEN_SOURCE_GLSL300ES[0];
            desc.vertex_func.entry = "main";
            desc.fragment_func.source = &FS_OFFSCREEN_SOURCE_GLSL300ES[0];
            desc.fragment_func.entry = "main";
            desc.attrs[0].glsl_name = "position";
            desc.attrs[1].glsl_name = "normal";
            desc.uniform_blocks[0].stage = sg.ShaderStage.Vertex;
            desc.uniform_blocks[0].layout = sg.UniformLayout.Std140;
            desc.uniform_blocks[0].size = 64;
            desc.uniform_blocks[0].glsl_uniforms[0].type = sg.UniformType.Float4;
            desc.uniform_blocks[0].glsl_uniforms[0].array_count = 4;
            desc.uniform_blocks[0].glsl_uniforms[0].glsl_name = "vs_params";
            break;
        case sg.Backend.D3d11:
            desc.vertex_func.source = &VS_OFFSCREEN_SOURCE_HLSL5[0];
            desc.vertex_func.d3d11_target = "vs_5_0";
            desc.vertex_func.entry = "main";
            desc.fragment_func.source = &FS_OFFSCREEN_SOURCE_HLSL5[0];
            desc.fragment_func.d3d11_target = "ps_5_0";
            desc.fragment_func.entry = "main";
            desc.attrs[0].hlsl_sem_name = "TEXCOORD";
            desc.attrs[0].hlsl_sem_index = 0;
            desc.attrs[1].hlsl_sem_name = "TEXCOORD";
            desc.attrs[1].hlsl_sem_index = 1;
            desc.uniform_blocks[0].stage = sg.ShaderStage.Vertex;
            desc.uniform_blocks[0].layout = sg.UniformLayout.Std140;
            desc.uniform_blocks[0].size = 64;
            desc.uniform_blocks[0].hlsl_register_b_n = 0;
            break;
        case sg.Backend.Metal_macos:
            desc.vertex_func.source = &VS_OFFSCREEN_SOURCE_METAL_MACOS[0];
            desc.vertex_func.entry = "main0";
            desc.fragment_func.source = &FS_OFFSCREEN_SOURCE_METAL_MACOS[0];
            desc.fragment_func.entry = "main0";
            desc.uniform_blocks[0].stage = sg.ShaderStage.Vertex;
            desc.uniform_blocks[0].layout = sg.UniformLayout.Std140;
            desc.uniform_blocks[0].size = 64;
            desc.uniform_blocks[0].msl_buffer_n = 0;
            break;
        case sg.Backend.Wgpu:
            desc.vertex_func.source = &VS_OFFSCREEN_SOURCE_WGSL[0];
            desc.vertex_func.entry = "main";
            desc.fragment_func.source = &FS_OFFSCREEN_SOURCE_WGSL[0];
            desc.fragment_func.entry = "main";
            desc.uniform_blocks[0].stage = sg.ShaderStage.Vertex;
            desc.uniform_blocks[0].layout = sg.UniformLayout.Std140;
            desc.uniform_blocks[0].size = 64;
            desc.uniform_blocks[0].wgsl_group0_binding_n = 0;
            break;
        default: break;
    }
    return desc;
}