Abstract: In one embodiment, a computing system may store, by first buffer blocks, texels organized into a texel array including a number of N×N texel sub-arrays. Each texel may fall within a corresponding N×N texel sub-array and may be associated with a two-dimensional sub-array coordinate indicating a position of that texel within the corresponding N×N texel sub-array. Each first buffer block of may be assigned a particular two-dimensional sub-array coordinate and stores a texel subset having the particular two-dimensional sub-array coordinate. The system may receive, by filter blocks, texels from the first buffer blocks. Each filter block may receive a texel from each first buffer block to form a corresponding N×N texel sub-array. The system may perform, by filter blocks, sampling operations parallelly on their respective N×N texel sub-arrays.

Abstract: In one embodiment, a computing system may determine a focus point of a viewer based on received sensor data. The system may determine, for a current frame, a first viewing region encompassing a focus point of the viewer and a second view region excluding the first viewing region. The system may determine, for the current frame, color values for the first viewing region using respective first sampling resolutions, and color values for the second viewing region using respective second sampling resolutions. At least one second sampling resolution may be lower than a corresponding first sampling resolution associated with a same color channel. At least two of the second sampling resolutions for the color channels of the second viewing region may be different from each other. The system may output the color values for the first viewing region and the second viewing region of the current frame for display.

Abstract: Systems and methods may provide for receiving a pixel shader and sending the pixel shader to shader bypass hardware if the pixel shader and a render target associated with the pixel shader satisfy a simplicity condition. In one example, the shader bypass hardware is dedicated to pixel shaders and associated render targets that satisfy the simplicity condition.

Abstract: In an embodiment, a headset display device includes a central processor and multiple projector integrated circuits for eyes of a wearer of the headset display device. Each eye of the wear is associated with at least three projector integrated circuits. Each of the three projector integrated circuits is communicatively coupled to the central processor. Each projector integrated circuit includes a first integrated circuit including a light emitter array having monochrome light emitters of a single color, and a second integrated circuit coupled to the first integrated circuit. The second integrated circuit includes a graphics processor configured to generate transformed image data. The graphics processor is configured to provide the transformed image data to the first integrated circuit. The first integrated circuit is configured to output the transformed image data using the light emitter array.

Abstract: In one embodiment, a method includes accessing display timing information associated with a display, and determining, based on the display timing information, one or more rendering requirements for a plurality of portions of the display. For each portion of the display, the method may determine a current viewpoint of a user, render, based on the current viewpoint of the user, pixel values for that portion of the display in accordance with the associated rendering requirement, and send the rendered pixel values to be output by the display. The display timing information may include a waveform associated with an oscillation motion of a scanning assembly of the display, and/or a requested size for each portion of the plurality of portions of the display. The rendering requirements may include a timing interval for rendering and sending the pixel values for each of the plurality of portions of the display.

Abstract: In one embodiment, a computing system may access surfaces and texel data of an artificial reality scene. The surfaces may be generated based on a first viewing position of a viewer. The system may determine tiles on a display to test for a visibility of the surfaces from a second viewing position. The tiles may include first tiles that need more computational resources and second tiles that need less computational resources. The system may determine a tile order which interleaves the first and second tiles. The system may generate rays based on the tile order. The system may determine the visibility of the surfaces from the second viewing position based on the ray-surface intersections. The system may generate color values of a subframe based on the surface visibility and the texel data. The system may provide the color values to the display.

Abstract: In one embodiment, a computing system may store, in a memory unit, a first array of pixel values to represent a scene as viewed along a first viewing direction. The first array of pixel values may correspond to a number of positions uniformly distributed in an angle space. The system may determine an angular displacement from the first viewing direction to a second viewing direction. The system may determine a second array of pixel values to represent the scene as viewed along the second viewing direction by: (1) shifting a portion of the first array of pixel values in the memory unit based on the angular displacement, or (2) reading a portion of the first array of pixel values from the memory unit using an address offset determined based on the angular displacement. The system may output the second array of pixel values to a display.

Abstract: In one embodiment, a computing system may access an image to be displayed by a display. The system may determine one or more first characteristics associated with a content of the image. The one or more first characteristics may include a contrast level of the content of the image with respect to a background of the image. The system may determine a first display persistence time period for the display to display the image based on the one or more first characteristics associated with the content of the image. The system may configure the display to display the image using the first display persistence time period.

Abstract: A method by a computing system of a device includes generating a plurality of fragments by rasterizing one or more geometries to be displayed by a set of pixels. A pixel of the set of pixels is associated with fragments of the plurality of fragments, each including edges covering at a least a portion of the pixel. The method further includes encoding each of the fragments to include a representation of the one or more edges, including (1) an orientation of the edge and (2) a pixel coverage associated with the edge. The method further includes determining one or more alpha values corresponding to the fragments based on the orientation and the pixel coverage associated with each of the one or more edges. The method thus includes generating a color value for the pixel based on the one or more a alpha values corresponding to the fragments.

Abstract: In one embodiment, a computing system may access surfaces and texel data of an artificial reality scene. The surfaces may be generated based on a first viewing position of a viewer. The system may determine tiles on a display to test for a visibility of the surfaces from a second viewing position. The tiles may include first tiles that need more computational resources and second tiles that need less computational resources. The system may determine a tile order which interleaves the first and second tiles. The system may generate rays based on the tile order. The system may determine the visibility of the surfaces from the second viewing position based on the ray-surface intersections. The system may generate color values of a subframe based on the surface visibility and the texel data. The system may provide the color values to the display.

Abstract: In one embodiment, a method includes receiving instructions to render a snapshot of a scene for a video, where the snapshot is to be displayed using a sequence of N frames, computing a mipmap-level determining factor for a texture appearing in the scene based on a scale of the texture on a pixel grid, selecting a mipmap level of the texture for each of the N frames based on the mipmap-level determining factor, where the mipmap levels selected for the N frames are non-uniform and temporally approximate the mipmap-level determining factor, rendering each of the N frames by sampling the mipmap level of the texture selected for that frame, and displaying the rendered N frames sequentially to represent the snapshot of the scene.

Abstract: In one embodiment, a method includes receiving instructions to render a snapshot of a scene for a video, where the snapshot is to be displayed using a sequence of N frames, computing a mipmap-level determining factor for a texture appearing in the scene based on a scale of the texture on a pixel grid, selecting a mipmap level of the texture for each of the N frames based on the mipmap-level determining factor, where the mipmap levels selected for the N frames are non-uniform and temporally approximate the mipmap-level determining factor, rendering each of the N frames by sampling the mipmap level of the texture selected for that frame, and displaying the rendered N frames sequentially to represent the snapshot of the scene.

Abstract: In one embodiment, a method includes, by a computing system, accessing a first and second texture associated with an output position, determining a color-blending operation, determining a first color and a first transparency level based on the first texture, determining a second color and a second transparency level based on the second texture, and identifying a color-blending optimization based on the color-blending operation and a comparison of the colors and transparency levels. The method includes determining an output color and an output transparency level by performing the color-blending operation using the colors and transparency levels. The output color is determined by copying the first or second color or the output transparency level is determined by copying the first or second transparency level without additional calculation. The method includes providing the output color and the output transparency level for display at the output position.

Abstract: In one embodiment, a computing system may access surfaces and texel data of an artificial reality scene. The surfaces may be generated based on a first viewing position of a viewer. The system may determine tiles on a display to test for a visibility of the surfaces from a second viewing position. The tiles may include first tiles that need more computational resources and second tiles that need less computational resources. The system may determine a tile order which interleaves the first and second tiles. The system may generate rays based on the tile order. The system may determine the visibility of the surfaces from the second viewing position based on the ray-surface intersections. The system may generate color values of a subframe based on the surface visibility and the texel data. The system may provide the color values to the display.

Abstract: In one embodiment, a computing system may access an image to be displayed by a display. The system may determine one or more first characteristics associated with a content of the image. The one or more first characteristics may include a contrast level of the content of the image with respect to a background of the image. The system may determine a first display persistence time period for the display to display the image based on the one or more first characteristics associated with the content of the image. The system may configure the display to display the image using the first display persistence time period.

Abstract: In one embodiment, a computing system may receive one or more signals from one or more sensors associated with an artificial reality system. The system may determine one or more parameters associated a display content for the artificial reality system based on the one or more signals of the one or more sensors associated with the artificial reality system. The system may generate the display content based on the one or more parameters. The system may output the display content to a display of the artificial reality system.

Abstract: In one embodiment, a computing system may determine, for a pixel, a sampling location within a texture that comprises a plurality of texels, and based on the sampling location, select a set of texels in the plurality of texels. Each texel in the set of texels may encode a distance field. An interpolated distance field associated with the sampling location may be computed based on the distance fields associated with the set of texels. The interpolated distance field may represent a relative distance between the sampling location and a texture edge. According to a blending proportion based on the interpolated distance field, the computing system may determine a blended color for the sampling location by blending, a first and second color associated with a first side of the edge and a second side of the edge, and output a color for the pixel based on the blended color.

Abstract: In one embodiment, a method includes accessing one or more surfaces of an artificial reality scene. The one or more surfaces are generated based on one or more images of the artificial reality scene rendered at a first rate and based on a first viewing position. The method includes generating subframes at a second rate higher than the first rate. Each of the subframes is generated by determining a second viewing position, determining a visibility of the one or more surfaces of the artificial reality scene from the second viewing position, generating, based on the determined visibility of the one or more surfaces, color values of the subframe corresponding to output positions of a display, and providing the color values of the subframe for display.

Abstract: In one embodiment, a computing system may store, by first buffer blocks, texels organized into a texel array including a number of N×N texel sub-arrays. Each texel may fall within a corresponding N×N texel sub-array and may be associated with a two-dimensional sub-array coordinate indicating a position of that texel within the corresponding N×N texel sub-array. Each first buffer block of may be assigned a particular two-dimensional sub-array coordinate and stores a texel subset having the particular two-dimensional sub-array coordinate. The system may receive, by filter blocks, texels from the first buffer blocks. Each filter block may receive a texel from each first buffer block to form a corresponding N×N texel sub-array. The system may perform, by filter blocks, sampling operations parallelly on their respective N×N texel sub-arrays.

Abstract: Systems and methods may provide for receiving a pixel shader and sending the pixel shader to shader bypass hardware if the pixel shader and a render target associated with the pixel shader satisfy a simplicity condition. In one example, the shader bypass hardware is dedicated to pixel shaders and associated render targets that satisfy the simplicity condition.