type BlendFuncConstant = WebGLRenderingContext['ZERO'] | WebGLRenderingContext['ONE'] | WebGLRenderingContext['SRC_COLOR'] | WebGLRenderingContext['ONE_MINUS_SRC_COLOR'] | WebGLRenderingContext['DST_COLOR'] | WebGLRenderingContext['ONE_MINUS_DST_COLOR'] | WebGLRenderingContext['SRC_ALPHA'] | WebGLRenderingContext['ONE_MINUS_SRC_ALPHA'] | WebGLRenderingContext['DST_ALPHA'] | WebGLRenderingContext['ONE_MINUS_DST_ALPHA'] | WebGLRenderingContext['CONSTANT_COLOR'] | WebGLRenderingContext['ONE_MINUS_CONSTANT_COLOR'] | WebGLRenderingContext['CONSTANT_ALPHA'] | WebGLRenderingContext['ONE_MINUS_CONSTANT_ALPHA'] | WebGLRenderingContext['BLEND_COLOR'];

export type BlendFuncType = [BlendFuncConstant, BlendFuncConstant];

export type BlendEquationType = WebGLRenderingContext['FUNC_ADD'] | WebGLRenderingContext['FUNC_SUBTRACT'] | WebGLRenderingContext['FUNC_REVERSE_SUBTRACT'];

export type ColorMaskType = [boolean, boolean, boolean, boolean];

export type CompareFuncType = WebGLRenderingContext['NEVER'] | WebGLRenderingContext['LESS'] | WebGLRenderingContext['EQUAL'] | WebGLRenderingContext['LEQUAL'] | WebGLRenderingContext['GREATER'] | WebGLRenderingContext['NOTEQUAL'] | WebGLRenderingContext['GEQUAL'] | WebGLRenderingContext['ALWAYS'];

export type DepthMaskType = boolean;

export type DepthRangeType = [number, number];

export type DepthFuncType = CompareFuncType;

export type StencilFuncType = {
    func: CompareFuncType;
    ref: number;
    mask: number;
};

export type StencilOpConstant = WebGLRenderingContext['KEEP'] | WebGLRenderingContext['ZERO'] | WebGLRenderingContext['REPLACE'] | WebGLRenderingContext['INCR'] | WebGLRenderingContext['INCR_WRAP'] | WebGLRenderingContext['DECR'] | WebGLRenderingContext['DECR_WRAP'] | WebGLRenderingContext['INVERT'];

export type StencilOpType = [StencilOpConstant, StencilOpConstant, StencilOpConstant];

export type TextureUnitType = number;

export type ViewportType = [number, number, number, number];

export type StencilTestGL = {
    func: WebGLRenderingContext['NEVER'];
    mask: 0;
} | {
    func: WebGLRenderingContext['LESS'];
    mask: number;
} | {
    func: WebGLRenderingContext['EQUAL'];
    mask: number;
} | {
    func: WebGLRenderingContext['LEQUAL'];
    mask: number;
} | {
    func: WebGLRenderingContext['GREATER'];
    mask: number;
} | {
    func: WebGLRenderingContext['NOTEQUAL'];
    mask: number;
} | {
    func: WebGLRenderingContext['GEQUAL'];
    mask: number;
} | {
    func: WebGLRenderingContext['ALWAYS'];
    mask: 0;
};

export type CullFaceModeType = WebGLRenderingContext['FRONT'] | WebGLRenderingContext['BACK'] | WebGLRenderingContext['FRONT_AND_BACK'];

export type FrontFaceType = WebGLRenderingContext['CW'] | WebGLRenderingContext['CCW'];