This class is used by the IESLoader to generate a LUT texture which is used in the shaders to perform IES lighting. It takes a set of vertical and horizontal angles, as well as a set of candela values, which then are lineary interpolated onto a 2D LUT Texture.
__init__() → None¶
This constructs a new IESDataset with no data set.
__init__(param0: IESDataset) → None
setVerticalAngles(vertical_angles: PTA_float) → None¶
This sets the list of vertical angles of the dataset.
setHorizontalAngles(horizontal_angles: PTA_float) → None¶
This sets the list of horizontal angles of the dataset.
setCandelaValues(candela_values: PTA_float) → None¶
This sets the candela values of the dataset. They should be an interleaved 2D array with the dimensions vertical_angles x horizontal_angles. They also should be normalized by dividing by the maximum entry.
generateDatasetTextureInto(dest_tex: Texture, z: size_t) → None¶
This generates the LUT into a given dataset texture. The x-axis referes to the vertical_angle, whereas the y-axis refers to the horizontal angle.
2D Texture Array.