8245a85429
This CL splits out the code in RTCI420Shader.mm for uploading byte buffers to textures into its own class RTCI420TextureCache. The purpose is to prepare for allowing clients to inject their own shaders. RTCI420TextureCache will be used in the generic code, while the actual shaders in RTCI420Shader will be customizable by the client. BUG=webrtc:7473 Review-Url: https://codereview.webrtc.org/2842453002 Cr-Commit-Position: refs/heads/master@{#17882}