# US 2019/0244393 A1 · Interleaved multisample render targets for lossless compression > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0244393 A1 - Document ID: US20190244393A1 - Status: Published application - Kind: A1 - Application number: 16/360,520 - Filed: 2019-03-21 - Published: 2019-08-08 - Earliest claimed: 2017-04-21 - Assignees: Intel Corporation - Applicants: Intel Corporation - Inventors: Prasoonkumar Surti; Abhishek R. Appu - Web page: https://patentgrep.com/patent/US20190244393A1 ## CPC - G06T 9/00: Image coding (bandwidth or redundancy reduction for static pictures H04N1/41; coding or decoding of static colour picture signals H04N1/64; methods or arrangements for coding, decoding, compressing or decompressing digital video signals H04N19/00) - G06T 1/20: Processor architectures; Processor configuration, e.g. pipelining - G06T 5/70: Denoising; Smoothing - G06T 11/10: Texturing; Colouring; Generation of textures or colours (retouching, inpainting or scratch removal G06T5/77) - G06T 11/40: Filling planar surfaces by adding surface attributes, e.g. adding colours or textures - H04N 19/103: Selection of coding mode or of prediction mode - H04N 19/154: Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion (use of rate-distortion criteria H04N19/147) - H04N 19/176: the region being a block, e.g. a macroblock - H04N 19/46: Embedding additional information in the video signal during the compression process (H04N19/517, H04N19/68, H04N19/70 take precedence) - H04N 19/593: involving spatial prediction techniques - G06T 2210/52: Parallel processing - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract One embodiment provides for a general-purpose graphics processor comprising a hardware graphics rendering pipeline configured to perform multisample anti-aliasing, the hardware graphics rendering pipeline including pixel processing logic to determine color data for multiple sample locations of each pixel in a set of pixels and to contiguously pack the color data for the multiple sample locations of each pixel for storage to a multisample render target. ## Claims ### Claim 1 A general-purpose graphics processor comprising: a hardware graphics renderer to perform multisample anti-aliasing, the hardware graphics renderer including: a pixel processor to determine color data for multiple sample locations of a pixel in a set of pixels and contiguously pack color values within the color data into a memory configured to store multiple sample locations for the pixel; and a compressor to perform lossless compression on the color values within the color data. ### Claim 2 (depends on 1) The general-purpose graphics processor as in claim 1, additionally comprising a rasterizer to determine sample coverage for input geometry and cause the pixel processor to determine color data for the multiple sample locations of the pixel. ### Claim 3 (depends on 1) The general-purpose graphics processor as in claim 1, wherein the pixel processor is to store only unique color values for the multiple sample locations of the pixel. ### Claim 4 (depends on 1) The general-purpose graphics processor as in claim 1, wherein the compressor is to remove duplicate color values for the multiple sample locations of the pixel. ### Claim 5 (depends on 4) The general-purpose graphics processor as in claim 4, wherein the compressor is to perform lossless compression on the color values within the color data before the color data is stored to the memory. ### Claim 6 (depends on 5) The general-purpose graphics processor as in claim 5, wherein the pixel processor is to interleave packed color data for each pixel in the set of pixels and interleaved packed color data is to be stored to the memory. ### Claim 7 (depends on 6) The general-purpose graphics processor as in claim 6, wherein the compressor is to perform the lossless compression on the interleaved packed color data. ### Claim 8 (depends on 7) The general-purpose graphics processor as in claim 7, wherein the compressor is to write the interleaved packed color data to memory. ### Claim 9 (depends on 8) The general-purpose graphics processor as in claim 8, wherein the packed color data is written to a single memory plane. ### Claim 10 (depends on 1) The general-purpose graphics processor as in claim 1, wherein the set of pixels is a tile of pixels. ### Claim 11 A method comprising: determining, within a hardware graphics rendering pipeline of a graphics processing unit, a set of color values associated with multiple sample locations of a pixel within a scene; generating a compressed subset of the set of color values including distinct color values for the pixel; interleaving the compressed subset of the set of color values for the pixel into a memory plane; applying lossless compression to the set of color values within the memory plane; and storing the memory plane to a memory configured to store multiple sample locations per pixel. ### Claim 12 (depends on 11) The method of claim 11, wherein generating the compressed subset of the set of color values includes removing duplicate color values associated with the multiple sample locations within the pixel. ### Claim 13 (depends on 11) The method of claim 11, wherein generating the compressed subset of the set of color values includes storing only unique color values associated with the multiple sample locations within the pixel. ### Claim 14 (depends on 11) The method of claim 11, wherein interleaving the compressed subset of the set of color values for the pixel into the memory plane includes contiguously writing unique color values for the set of color values for the pixel within a cache line of a render cache. ### Claim 15 (depends on 14) The method as in claim 14, wherein applying lossless compression to the set of color values within the memory plane includes compressing color data stored in the cache line of the render cache and writing compressed color data to an address associated with the memory plane. ### Claim 16 A data processing system comprising: a memory device including memory configured to store multiple sample locations for each pixel in a set of pixels; and a general-purpose graphics processing unit (GPGPU) including a hardware graphics rendering pipeline configured to perform multisample anti-aliasing, wherein the hardware graphics rendering pipeline includes: a pixel processor to determine color data for multiple sample locations of a pixel in the set of pixels and to contiguously pack the color data for the multiple sample locations of the pixel for storage to the memory; and a compressor to perform lossless compression on the color data before the color data is stored to the memory. ### Claim 17 (depends on 16) The data processing system as in claim 16, wherein the pixel processor of the GPGPU is to interleave packed color data for the pixel and interleaved packed color data is to be stored to the memory. ### Claim 18 (depends on 17) The data processing system as in claim 17, wherein the compressor is to perform the lossless compression on the interleaved packed color data. ### Claim 19 (depends on 16) The data processing system as in claim 16, wherein the pixel processor is to store only unique color values for the multiple sample locations of the pixel. ### Claim 20 (depends on 16) The data processing system as in claim 16, wherein the compressor is to remove duplicate color values for the multiple sample locations of the pixel.