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

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

    Cmdline:
        sokol-shdc -i src/draw/default.glsl -o src/draw/default_shader.odin -l glsl430:metal_macos:hlsl5 -f sokol_odin

    Overview:
    =========
    Shader program: 'default':
        Get shader desc: default_shader_desc(sg.query_backend())
        Vertex Shader: vs
        Fragment Shader: fs
        Attributes:
            ATTR_default_vposition => 0
            ATTR_default_vuv => 1
            ATTR_default_vcolor => 2
    Bindings:
        Uniform block 'default_vs_params':
            Odin struct: Default_Vs_Params
            Bind slot: UB_default_vs_params => 0
        Texture 'tex':
            Image type: ._2D
            Sample type: .FLOAT
            Multisampled: false
            Bind slot: VIEW_tex => 0
        Sampler 'tex_samp':
            Type: .FILTERING
            Bind slot: SMP_tex_samp => 0
*/
ATTR_default_vposition :: 0
ATTR_default_vuv :: 1
ATTR_default_vcolor :: 2
UB_default_vs_params :: 0
VIEW_tex :: 0
SMP_tex_samp :: 0
Default_Vs_Params :: struct #align(16) {
    using _: struct #packed {
        projection: [16]f32,
    },
}
/*
    #version 430

    uniform vec4 default_vs_params[4];
    layout(location = 0) in vec2 vposition;
    layout(location = 0) out vec4 fcolor;
    layout(location = 2) in vec4 vcolor;
    layout(location = 1) out vec2 fuv;
    layout(location = 1) in vec2 vuv;

    void main()
    {
        gl_Position = mat4(default_vs_params[0], default_vs_params[1], default_vs_params[2], default_vs_params[3]) * vec4(vposition, 0.0, 1.0);
        fcolor = vcolor;
        fuv = vuv;
    }

*/
@(private="file")
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}
/*
    #version 430

    layout(binding = 0) uniform sampler2D tex_tex_samp;

    layout(location = 0) out vec4 out_color;
    layout(location = 1) in vec2 fuv;
    layout(location = 0) in vec4 fcolor;

    void main()
    {
        out_color = texture(tex_tex_samp, fuv) * fcolor;
    }

*/
@(private="file")
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}
/*
    cbuffer default_vs_params : register(b0)
    {
        row_major float4x4 _19_projection : packoffset(c0);
    };


    static float4 gl_Position;
    static float2 vposition;
    static float4 fcolor;
    static float4 vcolor;
    static float2 fuv;
    static float2 vuv;

    struct SPIRV_Cross_Input
    {
        float2 vposition : TEXCOORD0;
        float2 vuv : TEXCOORD1;
        float4 vcolor : TEXCOORD2;
    };

    struct SPIRV_Cross_Output
    {
        float4 fcolor : TEXCOORD0;
        float2 fuv : TEXCOORD1;
        float4 gl_Position : SV_Position;
    };

    void vert_main()
    {
        gl_Position = mul(float4(vposition, 0.0f, 1.0f), _19_projection);
        fcolor = vcolor;
        fuv = vuv;
    }

    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
    {
        vposition = stage_input.vposition;
        vcolor = stage_input.vcolor;
        vuv = stage_input.vuv;
        vert_main();
        SPIRV_Cross_Output stage_output;
        stage_output.gl_Position = gl_Position;
        stage_output.fcolor = fcolor;
        stage_output.fuv = fuv;
        return stage_output;
    }
*/
@(private="file")
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}
/*
    Texture2D<float4> tex : register(t0);
    SamplerState tex_samp : register(s0);

    static float4 out_color;
    static float2 fuv;
    static float4 fcolor;

    struct SPIRV_Cross_Input
    {
        float4 fcolor : TEXCOORD0;
        float2 fuv : TEXCOORD1;
    };

    struct SPIRV_Cross_Output
    {
        float4 out_color : SV_Target0;
    };

    void frag_main()
    {
        out_color = tex.Sample(tex_samp, fuv) * fcolor;
    }

    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
    {
        fuv = stage_input.fuv;
        fcolor = stage_input.fcolor;
        frag_main();
        SPIRV_Cross_Output stage_output;
        stage_output.out_color = out_color;
        return stage_output;
    }
*/
@(private="file")
fs_source_hlsl5 := [614]u8 {
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}
/*
    #include <metal_stdlib>
    #include <simd/simd.h>

    using namespace metal;

    struct default_vs_params
    {
        float4x4 projection;
    };

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

    struct main0_in
    {
        float2 vposition [[attribute(0)]];
        float2 vuv [[attribute(1)]];
        float4 vcolor [[attribute(2)]];
    };

    vertex main0_out main0(main0_in in [[stage_in]], constant default_vs_params& _19 [[buffer(0)]])
    {
        main0_out out = {};
        out.gl_Position = _19.projection * float4(in.vposition, 0.0, 1.0);
        out.fcolor = in.vcolor;
        out.fuv = in.vuv;
        return out;
    }

*/
@(private="file")
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}
/*
    #include <metal_stdlib>
    #include <simd/simd.h>

    using namespace metal;

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

    struct main0_in
    {
        float4 fcolor [[user(locn0)]];
        float2 fuv [[user(locn1)]];
    };

    fragment main0_out main0(main0_in in [[stage_in]], texture2d<float> tex [[texture(0)]], sampler tex_samp [[sampler(0)]])
    {
        main0_out out = {};
        out.out_color = tex.sample(tex_samp, in.fuv) * in.fcolor;
        return out;
    }

*/
@(private="file")
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}
default_shader_desc :: proc (backend: sg.Backend) -> sg.Shader_Desc {
    desc: sg.Shader_Desc
    desc.label = "default_shader"
    #partial switch backend {
    case .GLCORE:
        desc.vertex_func.source = transmute(cstring)&vs_source_glsl430
        desc.vertex_func.entry = "main"
        desc.fragment_func.source = transmute(cstring)&fs_source_glsl430
        desc.fragment_func.entry = "main"
        desc.attrs[0].base_type = .FLOAT
        desc.attrs[0].glsl_name = "vposition"
        desc.attrs[1].base_type = .FLOAT
        desc.attrs[1].glsl_name = "vuv"
        desc.attrs[2].base_type = .FLOAT
        desc.attrs[2].glsl_name = "vcolor"
        desc.uniform_blocks[0].stage = .VERTEX
        desc.uniform_blocks[0].layout = .STD140
        desc.uniform_blocks[0].size = 64
        desc.uniform_blocks[0].glsl_uniforms[0].type = .FLOAT4
        desc.uniform_blocks[0].glsl_uniforms[0].array_count = 4
        desc.uniform_blocks[0].glsl_uniforms[0].glsl_name = "default_vs_params"
        desc.views[0].texture.stage = .FRAGMENT
        desc.views[0].texture.image_type = ._2D
        desc.views[0].texture.sample_type = .FLOAT
        desc.views[0].texture.multisampled = false
        desc.samplers[0].stage = .FRAGMENT
        desc.samplers[0].sampler_type = .FILTERING
        desc.texture_sampler_pairs[0].stage = .FRAGMENT
        desc.texture_sampler_pairs[0].view_slot = 0
        desc.texture_sampler_pairs[0].sampler_slot = 0
        desc.texture_sampler_pairs[0].glsl_name = "tex_tex_samp"
    case .D3D11:
        desc.vertex_func.source = transmute(cstring)&vs_source_hlsl5
        desc.vertex_func.d3d11_target = "vs_5_0"
        desc.vertex_func.entry = "main"
        desc.fragment_func.source = transmute(cstring)&fs_source_hlsl5
        desc.fragment_func.d3d11_target = "ps_5_0"
        desc.fragment_func.entry = "main"
        desc.attrs[0].base_type = .FLOAT
        desc.attrs[0].hlsl_sem_name = "TEXCOORD"
        desc.attrs[0].hlsl_sem_index = 0
        desc.attrs[1].base_type = .FLOAT
        desc.attrs[1].hlsl_sem_name = "TEXCOORD"
        desc.attrs[1].hlsl_sem_index = 1
        desc.attrs[2].base_type = .FLOAT
        desc.attrs[2].hlsl_sem_name = "TEXCOORD"
        desc.attrs[2].hlsl_sem_index = 2
        desc.uniform_blocks[0].stage = .VERTEX
        desc.uniform_blocks[0].layout = .STD140
        desc.uniform_blocks[0].size = 64
        desc.uniform_blocks[0].hlsl_register_b_n = 0
        desc.views[0].texture.stage = .FRAGMENT
        desc.views[0].texture.image_type = ._2D
        desc.views[0].texture.sample_type = .FLOAT
        desc.views[0].texture.multisampled = false
        desc.views[0].texture.hlsl_register_t_n = 0
        desc.samplers[0].stage = .FRAGMENT
        desc.samplers[0].sampler_type = .FILTERING
        desc.samplers[0].hlsl_register_s_n = 0
        desc.texture_sampler_pairs[0].stage = .FRAGMENT
        desc.texture_sampler_pairs[0].view_slot = 0
        desc.texture_sampler_pairs[0].sampler_slot = 0
    case .METAL_MACOS:
        desc.vertex_func.source = transmute(cstring)&vs_source_metal_macos
        desc.vertex_func.entry = "main0"
        desc.fragment_func.source = transmute(cstring)&fs_source_metal_macos
        desc.fragment_func.entry = "main0"
        desc.attrs[0].base_type = .FLOAT
        desc.attrs[1].base_type = .FLOAT
        desc.attrs[2].base_type = .FLOAT
        desc.uniform_blocks[0].stage = .VERTEX
        desc.uniform_blocks[0].layout = .STD140
        desc.uniform_blocks[0].size = 64
        desc.uniform_blocks[0].msl_buffer_n = 0
        desc.views[0].texture.stage = .FRAGMENT
        desc.views[0].texture.image_type = ._2D
        desc.views[0].texture.sample_type = .FLOAT
        desc.views[0].texture.multisampled = false
        desc.views[0].texture.msl_texture_n = 0
        desc.samplers[0].stage = .FRAGMENT
        desc.samplers[0].sampler_type = .FILTERING
        desc.samplers[0].msl_sampler_n = 0
        desc.texture_sampler_pairs[0].stage = .FRAGMENT
        desc.texture_sampler_pairs[0].view_slot = 0
        desc.texture_sampler_pairs[0].sampler_slot = 0
    }
    return desc
}