export class ShaderData {
    programs: Array<ShaderProgram> = [];
    shaders: Array<Shader> = [];
    techniques: Array<Technique> = [];
}

export class ShaderProgram {
    vertexShader: number | undefined;
    fragmentShader: number | undefined;
}

export enum ShaderType {

    Fragment = 35632,
    Vertex = 35633,
}

export class Shader {
    name: string | undefined;
    type: ShaderType | undefined;
    uri: string | null | undefined;
    code: string | null | undefined;
}

export class Technique {
    program: number | undefined;
    attributes: Map<string, ShaderAttribute> = new Map();;
    uniforms: Map<string, ShaderUniform> = new Map();
}

export class ShaderAttribute {
    semantic: string | undefined;
}

export class ShaderUniform {
    name: string = "";
    type: UniformType | undefined;
    semantic: string | undefined;
    count : number = 0;
    node : number = 0;
}



export enum UniformType {
    INT = 5124,
    FLOAT = 5126,
    FLOAT_VEC2 = 35664,
    FLOAT_VEC3 = 35665,
    FLOAT_VEC4 = 35666,
    INT_VEC2 = 35667,
    INT_VEC3 = 35668,
    INT_VEC4 = 35669,
    BOOL = 35670, // exported as int
    BOOL_VEC2 = 35671,
    BOOL_VEC3 = 35672,
    BOOL_VEC4 = 35673,
    FLOAT_MAT2 = 35674, // exported as vec2[2]
    FLOAT_MAT3 = 35675, // exported as vec3[3]
    FLOAT_MAT4 = 35676, // exported as vec4[4]
    SAMPLER_2D = 35678,
    SAMPLER_3D = 35680, // added, not in the proposed extension
    SAMPLER_CUBE = 35681, // added, not in the proposed extension
    UNKNOWN = 0,
}