package ve_sokol
import sg "thirdparty:sokol/gfx"
/*
    #version:1# (machine generated, don't edit!)

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

    Cmdline:
        sokol-shdc --input C:\projects\VEFontCache-Odin\backend\sokol\blit_atlas.shdc.glsl --output C:\projects\VEFontCache-Odin\backend\sokol\blit_atlas.odin --slang hlsl4 --format=sokol_odin --module =blit_atlas

    Overview:
    =========
    Shader program: 'blit_atlas':
        Get shader desc: blit_atlas_shader_desc(sg.query_backend())
        Vertex shader: blit_atlas_vs
            Attributes:
                ATTR_blit_atlas_vs_v_position => 0
                ATTR_blit_atlas_vs_v_texture => 1
        Fragment shader: blit_atlas_fs
            Uniform block 'blit_atlas_fs_params':
                Odin struct: Blit_Atlas_Fs_Params
                Bind slot: SLOT_blit_atlas_fs_params => 0
            Image 'blit_atlas_src_texture':
                Image type: ._2D
                Sample type: .FLOAT
                Multisampled: false
                Bind slot: SLOT_blit_atlas_src_texture => 0
            Sampler 'blit_atlas_src_sampler':
                Type: .FILTERING
                Bind slot: SLOT_blit_atlas_src_sampler => 0
            Image Sampler Pair 'blit_atlas_src_texture_blit_atlas_src_sampler':
                Image: blit_atlas_src_texture
                Sampler: blit_atlas_src_sampler
*/
ATTR_blit_atlas_vs_v_position :: 0
ATTR_blit_atlas_vs_v_texture :: 1
SLOT_blit_atlas_fs_params :: 0
SLOT_blit_atlas_src_texture :: 0
SLOT_blit_atlas_src_sampler :: 0
Blit_Atlas_Fs_Params :: struct #align(16) {
    using _: struct #packed {
        region: i32,
        _: [12]u8,
    },
}
/*
    static float4 gl_Position;
    static float2 uv;
    static float2 v_texture;
    static float2 v_position;

    struct SPIRV_Cross_Input
    {
        float2 v_position : TEXCOORD0;
        float2 v_texture : TEXCOORD1;
    };

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

    void vert_main()
    {
        uv = float2(v_texture.x, 1.0f - v_texture.y);
        gl_Position = float4(v_position, 0.0f, 1.0f);
    }

    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
    {
        v_texture = stage_input.v_texture;
        v_position = stage_input.v_position;
        vert_main();
        SPIRV_Cross_Output stage_output;
        stage_output.gl_Position = gl_Position;
        stage_output.uv = uv;
        return stage_output;
    }
*/
@(private)
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}
/*
    cbuffer blit_atlas_fs_params : register(b0)
    {
        int _88_region : packoffset(c0);
    };

    Texture2D<float4> blit_atlas_src_texture : register(t0);
    SamplerState blit_atlas_src_sampler : register(s0);

    static float2 uv;
    static float4 frag_color;

    struct SPIRV_Cross_Input
    {
        float2 uv : TEXCOORD0;
    };

    struct SPIRV_Cross_Output
    {
        float4 frag_color : SV_Target0;
    };

    float down_sample(float2 uv_1, float2 texture_size)
    {
        return 0.25f * (((blit_atlas_src_texture.Sample(blit_atlas_src_sampler, uv_1).x + blit_atlas_src_texture.Sample(blit_atlas_src_sampler, mad(float2(0.0f, 1.0f), texture_size, uv_1)).x) + blit_atlas_src_texture.Sample(blit_atlas_src_sampler, mad(float2(1.0f, 0.0f), texture_size, uv_1)).x) + blit_atlas_src_texture.Sample(blit_atlas_src_sampler, uv_1 + texture_size).x);
    }

    void frag_main()
    {
        bool _93 = _88_region == 0;
        bool _101;
        if (!_93)
        {
            _101 = _88_region == 1;
        }
        else
        {
            _101 = _93;
        }
        bool _109;
        if (!_101)
        {
            _109 = _88_region == 2;
        }
        else
        {
            _109 = _101;
        }
        if (_109)
        {
            float2 param = uv + float2(-0.00048828125f, -0.0029296875f);
            float2 param_1 = float2(0.00048828125f, 0.001953125f);
            float2 param_2 = uv + float2(0.000244140625f, -0.0029296875f);
            float2 param_3 = float2(0.00048828125f, 0.001953125f);
            float2 param_4 = uv + float2(-0.000732421875f, 0.0009765625f);
            float2 param_5 = float2(0.00048828125f, 0.001953125f);
            float2 param_6 = uv + float2(0.000244140625f, 0.0009765625f);
            float2 param_7 = float2(0.00048828125f, 0.001953125f);
            frag_color = float4(1.0f, 1.0f, 1.0f, 0.25f * (((down_sample(param, param_1) + down_sample(param_2, param_3)) + down_sample(param_4, param_5)) + down_sample(param_6, param_7)));
        }
        else
        {
            frag_color = float4(0.0f, 0.0f, 0.0f, 1.0f);
        }
    }

    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
    {
        uv = stage_input.uv;
        frag_main();
        SPIRV_Cross_Output stage_output;
        stage_output.frag_color = frag_color;
        return stage_output;
    }
*/
@(private)
blit_atlas_fs_source_hlsl4 := [2107]u8 {
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}
blit_atlas_shader_desc :: proc (backend: sg.Backend) -> sg.Shader_Desc {
    desc: sg.Shader_Desc
    desc.label = "blit_atlas_shader"
    #partial switch backend {
    case .D3D11:
        desc.attrs[0].sem_name = "TEXCOORD"
        desc.attrs[0].sem_index = 0
        desc.attrs[1].sem_name = "TEXCOORD"
        desc.attrs[1].sem_index = 1
        desc.vs.source = transmute(cstring)&blit_atlas_vs_source_hlsl4
        desc.vs.d3d11_target = "vs_4_0"
        desc.vs.entry = "main"
        desc.fs.source = transmute(cstring)&blit_atlas_fs_source_hlsl4
        desc.fs.d3d11_target = "ps_4_0"
        desc.fs.entry = "main"
        desc.fs.uniform_blocks[0].size = 16
        desc.fs.uniform_blocks[0].layout = .STD140
        desc.fs.images[0].used = true
        desc.fs.images[0].multisampled = false
        desc.fs.images[0].image_type = ._2D
        desc.fs.images[0].sample_type = .FLOAT
        desc.fs.samplers[0].used = true
        desc.fs.samplers[0].sampler_type = .FILTERING
        desc.fs.image_sampler_pairs[0].used = true
        desc.fs.image_sampler_pairs[0].image_slot = 0
        desc.fs.image_sampler_pairs[0].sampler_slot = 0
    }
    return desc
}