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

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

    Cmdline:
        sokol-shdc -i shader_gbuffer.glsl -o ./jai/shader_gbuffer.jai -l glsl430:glsl300es:metal_macos -f sokol_jai

    Overview:
    =========
    Shader program: 'gbuffer':
        Get shader desc: gbuffer_shader_desc(sg_query_backend())
        Vertex Shader: vs_g
        Fragment Shader: fs_g
        Attributes:
            ATTR_gbuffer_position => 0
            ATTR_gbuffer_normal => 1
            ATTR_gbuffer_centre => 2
            ATTR_gbuffer_instance => 3
    Bindings:
        Uniform block 'gbuffer_vs_params':
            Jai struct: Gbuffer_Vs_Params
            Bind slot: UB_gbuffer_vs_params => 0
*/
ATTR_gbuffer_position :: 0;
ATTR_gbuffer_normal :: 1;
ATTR_gbuffer_centre :: 2;
ATTR_gbuffer_instance :: 3;
UB_gbuffer_vs_params :: 0;
Gbuffer_Vs_Params :: struct {
    mvp: [16]float;
    view_matrix: [16]float;
    isGround: s32;
    planeHeight: float;
    _: [8]u8;
};
/*
    #version 430

    struct gbuffer_vs_params
    {
        mat4 mvp;
        mat4 view_matrix;
        int isGround;
        float planeHeight;
    };

    uniform gbuffer_vs_params _161;

    layout(location = 0) in vec4 position;
    layout(location = 0) out vec3 view_space_pos;
    layout(location = 1) out vec3 view_space_normal;
    layout(location = 1) in vec4 normal;
    layout(location = 3) in vec4 instance;
    layout(location = 2) in vec4 centre;

    mat3 gbuf_rot_x(float a)
    {
        float _28 = cos(a);
        float _31 = sin(a);
        return mat3(vec3(1.0, 0.0, 0.0), vec3(0.0, _28, -_31), vec3(0.0, _31, _28));
    }

    mat3 gbuf_rot_z(float a)
    {
        float _47 = cos(a);
        float _50 = sin(a);
        return mat3(vec3(_47, -_50, 0.0), vec3(_50, _47, 0.0), vec3(0.0, 0.0, 1.0));
    }

    mat3 gbuf_rot_y(float a)
    {
        float _64 = cos(a);
        float _67 = sin(a);
        return mat3(vec3(_64, 0.0, _67), vec3(0.0, 1.0, 0.0), vec3(-_67, 0.0, _64));
    }

    mat3 gbuf_get_orientation_matrix(int ori)
    {
        int _82 = ori / 4;
        mat3 base;
        if (_82 == 0)
        {
            base = mat3(vec3(1.0, 0.0, 0.0), vec3(0.0, 1.0, 0.0), vec3(0.0, 0.0, 1.0));
        }
        else
        {
            if (_82 == 1)
            {
                float param = 3.1415927410125732421875;
                base = gbuf_rot_x(param);
            }
            else
            {
                if (_82 == 2)
                {
                    float param_1 = -1.57079637050628662109375;
                    base = gbuf_rot_z(param_1);
                }
                else
                {
                    if (_82 == 3)
                    {
                        float param_2 = 1.57079637050628662109375;
                        base = gbuf_rot_z(param_2);
                    }
                    else
                    {
                        if (_82 == 4)
                        {
                            float param_3 = 1.57079637050628662109375;
                            base = gbuf_rot_x(param_3);
                        }
                        else
                        {
                            float param_4 = -1.57079637050628662109375;
                            base = gbuf_rot_x(param_4);
                        }
                    }
                }
            }
        }
        float param_5 = float(ori % 4) * 1.57079637050628662109375;
        return base * gbuf_rot_y(param_5);
    }

    void main()
    {
        if (_161.isGround == 1)
        {
            vec4 _186 = vec4(position.x * 100.0, _161.planeHeight, position.z * 100.0, 1.0);
            gl_Position = _161.mvp * _186;
            view_space_pos = (_161.view_matrix * _186).xyz;
            view_space_normal = mat3(_161.view_matrix[0].xyz, _161.view_matrix[1].xyz, _161.view_matrix[2].xyz) * normal.xyz;
        }
        else
        {
            int param = int(round(instance.w));
            mat3 _233 = gbuf_get_orientation_matrix(param);
            vec4 _254 = vec4(((_233 * (position.xyz - vec3(0.5))) + vec3(0.5)) + instance.xyz, 1.0);
            gl_Position = _161.mvp * _254;
            view_space_pos = (_161.view_matrix * _254).xyz;
            view_space_normal = mat3(_161.view_matrix[0].xyz, _161.view_matrix[1].xyz, _161.view_matrix[2].xyz) * (_233 * normal.xyz);
        }
    }

*/
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/*
    #version 430

    layout(location = 0) out vec4 out_position;
    layout(location = 0) in vec3 view_space_pos;
    layout(location = 1) out vec4 out_normal;
    layout(location = 1) in vec3 view_space_normal;

    void main()
    {
        out_position = vec4(view_space_pos, 1.0);
        out_normal = vec4(normalize(view_space_normal), 1.0);
    }

*/
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/*
    #version 300 es

    struct gbuffer_vs_params
    {
        mat4 mvp;
        mat4 view_matrix;
        int isGround;
        float planeHeight;
    };

    uniform gbuffer_vs_params _161;

    layout(location = 0) in vec4 position;
    out vec3 view_space_pos;
    out vec3 view_space_normal;
    layout(location = 1) in vec4 normal;
    layout(location = 3) in vec4 instance;
    layout(location = 2) in vec4 centre;

    mat3 gbuf_rot_x(float a)
    {
        float _28 = cos(a);
        float _31 = sin(a);
        return mat3(vec3(1.0, 0.0, 0.0), vec3(0.0, _28, -_31), vec3(0.0, _31, _28));
    }

    mat3 gbuf_rot_z(float a)
    {
        float _47 = cos(a);
        float _50 = sin(a);
        return mat3(vec3(_47, -_50, 0.0), vec3(_50, _47, 0.0), vec3(0.0, 0.0, 1.0));
    }

    mat3 gbuf_rot_y(float a)
    {
        float _64 = cos(a);
        float _67 = sin(a);
        return mat3(vec3(_64, 0.0, _67), vec3(0.0, 1.0, 0.0), vec3(-_67, 0.0, _64));
    }

    mat3 gbuf_get_orientation_matrix(int ori)
    {
        int _82 = ori / 4;
        mat3 base;
        if (_82 == 0)
        {
            base = mat3(vec3(1.0, 0.0, 0.0), vec3(0.0, 1.0, 0.0), vec3(0.0, 0.0, 1.0));
        }
        else
        {
            if (_82 == 1)
            {
                float param = 3.1415927410125732421875;
                base = gbuf_rot_x(param);
            }
            else
            {
                if (_82 == 2)
                {
                    float param_1 = -1.57079637050628662109375;
                    base = gbuf_rot_z(param_1);
                }
                else
                {
                    if (_82 == 3)
                    {
                        float param_2 = 1.57079637050628662109375;
                        base = gbuf_rot_z(param_2);
                    }
                    else
                    {
                        if (_82 == 4)
                        {
                            float param_3 = 1.57079637050628662109375;
                            base = gbuf_rot_x(param_3);
                        }
                        else
                        {
                            float param_4 = -1.57079637050628662109375;
                            base = gbuf_rot_x(param_4);
                        }
                    }
                }
            }
        }
        float param_5 = float(ori % 4) * 1.57079637050628662109375;
        return base * gbuf_rot_y(param_5);
    }

    void main()
    {
        if (_161.isGround == 1)
        {
            vec4 _186 = vec4(position.x * 100.0, _161.planeHeight, position.z * 100.0, 1.0);
            gl_Position = _161.mvp * _186;
            view_space_pos = (_161.view_matrix * _186).xyz;
            view_space_normal = mat3(_161.view_matrix[0].xyz, _161.view_matrix[1].xyz, _161.view_matrix[2].xyz) * normal.xyz;
        }
        else
        {
            int param = int(round(instance.w));
            mat3 _233 = gbuf_get_orientation_matrix(param);
            vec4 _254 = vec4(((_233 * (position.xyz - vec3(0.5))) + vec3(0.5)) + instance.xyz, 1.0);
            gl_Position = _161.mvp * _254;
            view_space_pos = (_161.view_matrix * _254).xyz;
            view_space_normal = mat3(_161.view_matrix[0].xyz, _161.view_matrix[1].xyz, _161.view_matrix[2].xyz) * (_233 * normal.xyz);
        }
    }

*/
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];
/*
    #version 300 es
    precision mediump float;
    precision highp int;

    layout(location = 0) out highp vec4 out_position;
    in highp vec3 view_space_pos;
    layout(location = 1) out highp vec4 out_normal;
    in highp vec3 view_space_normal;

    void main()
    {
        out_position = vec4(view_space_pos, 1.0);
        out_normal = vec4(normalize(view_space_normal), 1.0);
    }

*/
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/*
    #pragma clang diagnostic ignored "-Wmissing-prototypes"

    #include <metal_stdlib>
    #include <simd/simd.h>

    using namespace metal;

    struct gbuffer_vs_params
    {
        float4x4 mvp;
        float4x4 view_matrix;
        int isGround;
        float planeHeight;
    };

    struct main0_out
    {
        float3 view_space_pos [[user(locn0)]];
        float3 view_space_normal [[user(locn1)]];
        float4 gl_Position [[position]];
    };

    struct main0_in
    {
        float4 position [[attribute(0)]];
        float4 normal [[attribute(1)]];
        float4 instance [[attribute(3)]];
    };

    static inline __attribute__((always_inline))
    float3x3 gbuf_rot_x(thread const float& a)
    {
        float _28 = cos(a);
        float _31 = sin(a);
        return float3x3(float3(1.0, 0.0, 0.0), float3(0.0, _28, -_31), float3(0.0, _31, _28));
    }

    static inline __attribute__((always_inline))
    float3x3 gbuf_rot_z(thread const float& a)
    {
        float _47 = cos(a);
        float _50 = sin(a);
        return float3x3(float3(_47, -_50, 0.0), float3(_50, _47, 0.0), float3(0.0, 0.0, 1.0));
    }

    static inline __attribute__((always_inline))
    float3x3 gbuf_rot_y(thread const float& a)
    {
        float _64 = cos(a);
        float _67 = sin(a);
        return float3x3(float3(_64, 0.0, _67), float3(0.0, 1.0, 0.0), float3(-_67, 0.0, _64));
    }

    static inline __attribute__((always_inline))
    float3x3 gbuf_get_orientation_matrix(thread const int& ori)
    {
        int _82 = ori / 4;
        float3x3 base;
        if (_82 == 0)
        {
            base = float3x3(float3(1.0, 0.0, 0.0), float3(0.0, 1.0, 0.0), float3(0.0, 0.0, 1.0));
        }
        else
        {
            if (_82 == 1)
            {
                float param = 3.1415927410125732421875;
                base = gbuf_rot_x(param);
            }
            else
            {
                if (_82 == 2)
                {
                    float param_1 = -1.57079637050628662109375;
                    base = gbuf_rot_z(param_1);
                }
                else
                {
                    if (_82 == 3)
                    {
                        float param_2 = 1.57079637050628662109375;
                        base = gbuf_rot_z(param_2);
                    }
                    else
                    {
                        if (_82 == 4)
                        {
                            float param_3 = 1.57079637050628662109375;
                            base = gbuf_rot_x(param_3);
                        }
                        else
                        {
                            float param_4 = -1.57079637050628662109375;
                            base = gbuf_rot_x(param_4);
                        }
                    }
                }
            }
        }
        float param_5 = float(ori % 4) * 1.57079637050628662109375;
        return base * gbuf_rot_y(param_5);
    }

    vertex main0_out main0(main0_in in [[stage_in]], constant gbuffer_vs_params& _161 [[buffer(0)]])
    {
        main0_out out = {};
        if (_161.isGround == 1)
        {
            float4 _186 = float4(in.position.x * 100.0, _161.planeHeight, in.position.z * 100.0, 1.0);
            out.gl_Position = _161.mvp * _186;
            out.view_space_pos = (_161.view_matrix * _186).xyz;
            out.view_space_normal = float3x3(_161.view_matrix[0].xyz, _161.view_matrix[1].xyz, _161.view_matrix[2].xyz) * in.normal.xyz;
        }
        else
        {
            int param = int(round(in.instance.w));
            float3x3 _233 = gbuf_get_orientation_matrix(param);
            float4 _254 = float4(((_233 * (in.position.xyz - float3(0.5))) + float3(0.5)) + in.instance.xyz, 1.0);
            out.gl_Position = _161.mvp * _254;
            out.view_space_pos = (_161.view_matrix * _254).xyz;
            out.view_space_normal = float3x3(_161.view_matrix[0].xyz, _161.view_matrix[1].xyz, _161.view_matrix[2].xyz) * (_233 * in.normal.xyz);
        }
        return out;
    }

*/
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];
/*
    #include <metal_stdlib>
    #include <simd/simd.h>

    using namespace metal;

    struct main0_out
    {
        float4 out_position [[color(0)]];
        float4 out_normal [[color(1)]];
    };

    struct main0_in
    {
        float3 view_space_pos [[user(locn0)]];
        float3 view_space_normal [[user(locn1)]];
    };

    fragment main0_out main0(main0_in in [[stage_in]])
    {
        main0_out out = {};
        out.out_position = float4(in.view_space_pos, 1.0);
        out.out_normal = float4(fast::normalize(in.view_space_normal), 1.0);
        return out;
    }

*/
fs_g_source_metal_macos := u8.[
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];
gbuffer_shader_desc :: (backend: sg_backend) -> sg_shader_desc {
    desc: sg_shader_desc;
    desc.label = "gbuffer_shader";
    if backend == {
    case .GLCORE;
        desc.vertex_func.source = xx *vs_g_source_glsl430;
        desc.vertex_func.entry = "main";
        desc.fragment_func.source = xx *fs_g_source_glsl430;
        desc.fragment_func.entry = "main";
        desc.attrs[0].base_type = .FLOAT;
        desc.attrs[0].glsl_name = "position";
        desc.attrs[1].base_type = .FLOAT;
        desc.attrs[1].glsl_name = "normal";
        desc.attrs[2].base_type = .FLOAT;
        desc.attrs[2].glsl_name = "centre";
        desc.attrs[3].base_type = .FLOAT;
        desc.attrs[3].glsl_name = "instance";
        desc.uniform_blocks[0].stage = .VERTEX;
        desc.uniform_blocks[0].layout = .STD140;
        desc.uniform_blocks[0].size = 144;
        desc.uniform_blocks[0].glsl_uniforms[0].type = .MAT4;
        desc.uniform_blocks[0].glsl_uniforms[0].array_count = 0;
        desc.uniform_blocks[0].glsl_uniforms[0].glsl_name = "_161.mvp";
        desc.uniform_blocks[0].glsl_uniforms[1].type = .MAT4;
        desc.uniform_blocks[0].glsl_uniforms[1].array_count = 0;
        desc.uniform_blocks[0].glsl_uniforms[1].glsl_name = "_161.view_matrix";
        desc.uniform_blocks[0].glsl_uniforms[2].type = .INT;
        desc.uniform_blocks[0].glsl_uniforms[2].array_count = 0;
        desc.uniform_blocks[0].glsl_uniforms[2].glsl_name = "_161.isGround";
        desc.uniform_blocks[0].glsl_uniforms[3].type = .FLOAT;
        desc.uniform_blocks[0].glsl_uniforms[3].array_count = 0;
        desc.uniform_blocks[0].glsl_uniforms[3].glsl_name = "_161.planeHeight";
    case .GLES3;
        desc.vertex_func.source = xx *vs_g_source_glsl300es;
        desc.vertex_func.entry = "main";
        desc.fragment_func.source = xx *fs_g_source_glsl300es;
        desc.fragment_func.entry = "main";
        desc.attrs[0].base_type = .FLOAT;
        desc.attrs[0].glsl_name = "position";
        desc.attrs[1].base_type = .FLOAT;
        desc.attrs[1].glsl_name = "normal";
        desc.attrs[2].base_type = .FLOAT;
        desc.attrs[2].glsl_name = "centre";
        desc.attrs[3].base_type = .FLOAT;
        desc.attrs[3].glsl_name = "instance";
        desc.uniform_blocks[0].stage = .VERTEX;
        desc.uniform_blocks[0].layout = .STD140;
        desc.uniform_blocks[0].size = 144;
        desc.uniform_blocks[0].glsl_uniforms[0].type = .MAT4;
        desc.uniform_blocks[0].glsl_uniforms[0].array_count = 0;
        desc.uniform_blocks[0].glsl_uniforms[0].glsl_name = "_161.mvp";
        desc.uniform_blocks[0].glsl_uniforms[1].type = .MAT4;
        desc.uniform_blocks[0].glsl_uniforms[1].array_count = 0;
        desc.uniform_blocks[0].glsl_uniforms[1].glsl_name = "_161.view_matrix";
        desc.uniform_blocks[0].glsl_uniforms[2].type = .INT;
        desc.uniform_blocks[0].glsl_uniforms[2].array_count = 0;
        desc.uniform_blocks[0].glsl_uniforms[2].glsl_name = "_161.isGround";
        desc.uniform_blocks[0].glsl_uniforms[3].type = .FLOAT;
        desc.uniform_blocks[0].glsl_uniforms[3].array_count = 0;
        desc.uniform_blocks[0].glsl_uniforms[3].glsl_name = "_161.planeHeight";
    case .METAL_MACOS;
        desc.vertex_func.source = xx *vs_g_source_metal_macos;
        desc.vertex_func.entry = "main0";
        desc.fragment_func.source = xx *fs_g_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.attrs[3].base_type = .FLOAT;
        desc.uniform_blocks[0].stage = .VERTEX;
        desc.uniform_blocks[0].layout = .STD140;
        desc.uniform_blocks[0].size = 144;
        desc.uniform_blocks[0].msl_buffer_n = 0;
    }
    return desc;
}