/// <summary>
/// Do a texture lookup as in texture but with explicit LOD; lod specifies λbase and sets the partial derivatives as follows.
/// (See section 3.8.11 “Texture Minification” and equation 3.17 in the OpenGL Graphics SystemSpecification.)
/// ∂u/∂x = 0; ∂v/∂x = 0; ∂w/∂x = 0; ∂u/∂y = 0; ∂v/∂y = 0; ∂w/∂y = 0;
/// </summary>
protected static ivec4 textureLod(isamplerCube sampler, vec3 P, float lod)
{
throw _invalidAccess;
}
public static ivec4 texture(Location location, isamplerCube sampler, vec3 P, float bias = 0)
{
return(new ivec4(0));
}
/// <summary>Use the texture coordinate P to do a texture lookup in the texture currently bound to sampler.</summary>
protected static ivec4 texture(isamplerCube sampler, vec3 P, float bias)
{
throw _invalidAccess;
}
/// <summary> Do a texture lookup as in texture but with explicit gradients.
/// The partial derivatives of P are with respect to window x and window y.
/// ∂s/∂x = ∂P.s/∂x; ∂s/∂y = ∂P.s/∂y; ∂t/∂x = ∂P.t/∂x; ∂t/∂y = ∂P.t/∂y; ∂r/∂x = ∂P.p/∂x; ∂r/∂y = ∂P.p/∂y;</summary>
protected static ivec4 textureGrad(isamplerCube sampler, vec3 P, vec3 dPdx, vec3 dPdy)
{
throw _invalidAccess;
}
/// <summary>
/// Returns the mipmap array(s) that would be accessed in the x component of the return value.
/// Returns the computed level of detail relative to the base level in the y component of the return value.
/// If called on an incomplete texture, the results are undefined.
/// </summary>
protected static vec2 textureQueryLod(isamplerCube sampler, vec3 P)
{
throw _invalidAccess;
}
protected static ivec2 textureSize(isamplerCube sampler, int lod)
{
throw _invalidAccess;
}
/// <summary>Use the texture coordinate P to do a texture lookup in the texture currently bound to sampler.</summary>
protected internal static ivec4 Texture(isamplerCube sampler, vec3 P)
{
throw _invalidAccess;
}
/// <summary>
/// Returns the mipmap array(s) that would be accessed in the x component of the return value.
/// Returns the computed level of detail relative to the base level in the y component of the return value.
/// If called on an incomplete texture, the results are undefined.
/// </summary>
protected internal static vec2 TextureQueryLod(isamplerCube sampler, vec3 P)
{
throw _invalidAccess;
}
protected extern ivec4 textureGrad(isamplerCube sampler, vec3 p, vec3 dPdx, vec3 dPdy);
protected extern ivec2 textureSize(isamplerCube sampler, int lod);
protected extern ivec4 textureLod(isamplerCube sampler, vec3 p, float lod);