From 8a83ca4e9afc9e3c08b4e8c33a74392f9b3154d7 Mon Sep 17 00:00:00 2001 From: Brian Osman Date: Mon, 12 Feb 2018 14:32:17 -0500 Subject: Add "sharpen" option to SkSL, to LOD bias all textures This adds a fixed bias (-0.5) to the computed LOD of all mip-mapped texture fetches. (Technically, to all texture fetches, but that only matters for mip-mapped ones). Clients can opt-in with a new GrContextOption. Bug: skia:7541 Bug: chromium:562162 Change-Id: Ie3cd0679c4ab66f62d2dc32e7e68e5c99355115e Reviewed-on: https://skia-review.googlesource.com/106322 Reviewed-by: Brian Salomon Reviewed-by: Ethan Nicholas Commit-Queue: Brian Osman --- include/gpu/GrContextOptions.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/gpu/GrContextOptions.h') diff --git a/include/gpu/GrContextOptions.h b/include/gpu/GrContextOptions.h index 338c538963..84863f50a6 100644 --- a/include/gpu/GrContextOptions.h +++ b/include/gpu/GrContextOptions.h @@ -134,6 +134,13 @@ struct GrContextOptions { */ bool fAvoidStencilBuffers = false; + /** + * If true, texture fetches from mip-mapped textures will be biased to read larger MIP levels. + * This has the effect of sharpening those textures, at the cost of some aliasing, and possible + * performance impact. + */ + bool fSharpenMipmappedTextures = false; + /** * Enables driver workaround to use draws instead of glClear. This only applies to * kOpenGL_GrBackend. -- cgit v1.2.3