Abstract: A rendering method is applied to a terminal device, and the method includes: obtaining texture information of a light probe in a to-be-rendered virtual scene; performing illumination calculation on the virtual scene based on the texture information of the light probe, to obtain a first irradiance map, where a resolution of the first irradiance map is less than a resolution required by a rendering result of the virtual scene; and performing upsampling on the first irradiance map, to obtain a second irradiance map, where a resolution of the second irradiance map and the resolution required by the rendering result of the virtual scene are the same, and the second irradiance map is used to perform indirect light rendering of the virtual scene.

Abstract: In a field of electronic device technologies, a human-computer interaction method and device relates to a portable device receiving a first touch operation performed on a first image, where the first touch operation is directly performed on an area outside a first functional area, and the first functional area is a functional area in the first image. The portable device sends first data to a large-screen device, where the first data includes image data generated by the portable device in response to a second touch operation, the second touch operation is an operation that is generated based on the first touch operation and that is directly performed on the first functional area, and the first data is used by the large-screen device to update the second image.

Abstract: A method of transmitting a communication signal (FIG. 1) is disclosed. The method includes receiving a data signal (102). The method further includes receiving a codeword index (pre-coder selection) from a remote transceiver. A codeword is selected from a Householder matrix based codebook in response to the index. The data signal is precoded (104) in response to the selected codeword. The precoded data signal is transmitted (100) to the remote transceiver.

Abstract: A method of transmitting a communication signal (FIG. 1) is disclosed. The method includes receiving a data signal (102). The method further includes receiving a codeword index (pre-coder selection) from a remote transceiver. A codeword is selected from a Householder matrix based codebook in response to the index. The data signal is precoded (104) in response to the selected codeword. The precoded data signal is transmitted (100) to the remote transceiver.