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Brian Salomon 27e55e5b85 Make SW MIP selection closer to GPU with the sharpen mipmap option. 
Previously CPU computed the lambda value and then for nearest mode
took the floor value. GPUs instead round lambda to implement nearest.

GPU has an option to "sharpen" mip maps. The implementation adds a
-1/2 bias to lambda. This makes GPU match CPU's nearest implementation.
However, the bias is also applied in linear mode and so linear mode
now differs between CPU and GPU.

CPU should either
1) Match GPU without the option
2) Match GPU with the option
3) Be switchable.

Given that implementing 3 adds complexity and Chrome does use the option
I've chosen option 2 in this change.

BUG: skia:13078

Change-Id: Ie1066529f079b07a5b927659995a0cacd973c45a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/521960
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
2022-03-21 16:41:44 +00:00
bazel [includes] Enforce IWYU on sksl code 2022-03-21 12:43:02 +00:00
bench [graphite] Add support to nanobench for Graphite. 2022-03-14 20:10:30 +00:00
bin Handle 'aarch64' from platform.machine() 2022-03-01 13:10:59 +00:00
build/fuchsia [fuchsia] Fix fidlc command. 2020-06-10 03:29:24 +00:00
build_overrides Add Abseil dependency for Dawn 2021-09-22 22:05:32 +00:00
client_utils/android Make class members that are static constexpr also be inline. 2021-10-11 16:22:59 +00:00
demos.skia.org [canvaskit] Add in fillText to spreadsheet demo for comparison 2022-02-15 15:35:43 +00:00
dm Add CurrestTestHarness helper method. 2022-03-10 18:05:28 +00:00
docker [canvaskit] Enable Debugger bindings for autobuild 2022-03-08 17:42:37 +00:00
docs/examples Reland "Add kR8_unorm_SkColorType" 2022-02-10 18:00:19 +00:00
example [bazel] Support Vulkan 2022-03-08 21:21:17 +00:00
experimental [includes] Enforce IWYU on sksl code 2022-03-21 12:43:02 +00:00
fuzz Reland "[includes] Remove link between SkImage.h and SkImageEncoder.h" 2022-03-10 04:47:51 +00:00
gm Make anisotropic GM use mip maps 2022-03-21 14:16:36 +00:00
gn [graphite] Implement stencil wedge tessellated path rendering 2022-03-21 01:16:04 +00:00
include Reland "Add glGetFloatv and glSamplerParameterf to GrGLInterface." 2022-03-21 16:34:43 +00:00
infra Add Linux RTX3060 jobs. 2022-03-21 15:35:07 +00:00
modules [includes] Enforce IWYU on sksl code 2022-03-21 12:43:02 +00:00
platform_tools Add SkSL error tests that use Android RuntimeShader. 2022-03-21 14:07:42 +00:00
resources Simplify FreeType glyph paths with overlap. 2022-03-18 22:42:20 +00:00
samplecode Reland "[includes] Remove link between SkImage.h and SkImageEncoder.h" 2022-03-10 04:47:51 +00:00
site Remove obsolete python2 references. 2022-03-16 19:56:37 +00:00
specs [infra] Port serve.py from Python2 to 3 2021-08-31 15:28:19 +00:00
src Make SW MIP selection closer to GPU with the sharpen mipmap option. 2022-03-21 16:41:44 +00:00
tests Cleanup SkSL error test code a bit. 2022-03-21 16:17:25 +00:00
third_party [bazel] Support Vulkan 2022-03-08 21:21:17 +00:00
toolchain [includes] Enforce IWYU on sksl code 2022-03-21 12:43:02 +00:00
tools Reland "Add glGetFloatv and glSamplerParameterf to GrGLInterface." 2022-03-21 16:34:43 +00:00
.bazelrc [canvaskit] Add more features to Bazel build 2022-02-04 21:33:20 +00:00
.bazelversion [canvaskit] Add skottie to Bazel build 2022-02-04 19:18:27 +00:00
.clang-format no more bin packing in .clang-format 2021-03-04 17:22:50 +00:00
.clang-tidy Disable ClangTidy namespace comments for short blocks. 2020-08-24 14:01:22 +00:00
.gitignore Add .vscode to the default gitignore list. 2021-10-13 15:23:02 +00:00
.gn Pre-emptive fix for upcoming ANGLE change. 2021-01-08 17:23:52 +00:00
.vpython [python3] Reland recipes -> python3 changes 2021-12-01 13:04:03 +00:00
AUTHORS Remove obsolete sk_cf_obj 2022-03-11 05:59:16 +00:00
BUILD.bazel [bazel] Compile gms for wasm and WebGL 2022-02-09 18:56:17 +00:00
BUILD.gn Add CurrestTestHarness helper method. 2022-03-10 18:05:28 +00:00
codereview.settings Make uploading to Gerrit the default for Skia 2016-11-09 19:07:56 +00:00
CONTRIBUTING Fix references to https://sites.google.com/site/skiadocs/. 2015-02-03 13:12:54 -02:00
CQ_COMMITTERS Moved committer list to chrome-infra-auth and deleted it from the repo 2015-09-02 13:37:54 -07:00
DEPS Roll SwiftShader from 341ad7e57a3c to 2f3af2452783 (2 revisions) 2022-03-21 04:50:05 +00:00
DIR_METADATA Move metadata in OWNERS files to DIR_METADATA files 2021-02-02 23:41:54 +00:00
go_repositories.bzl [bazel] Use bazel to build task drivers 2022-03-03 16:12:18 +00:00
go.mod [bazel] Make use of test_on_env to spin up server for gms 2022-02-28 14:05:54 +00:00
go.sum [bazel] Make use of test_on_env to spin up server for gms 2022-02-28 14:05:54 +00:00
LICENSE LICENSE file: clean up 2019-11-22 21:59:03 +00:00
OWNERS [infra] Add wildcard OWNERS 2021-08-30 19:19:34 +00:00
OWNERS.android Update OWNERS.android with more details 2022-03-16 18:13:33 +00:00
package-lock.json [bazel] Make custom karma_test rule 2022-02-23 14:53:01 +00:00
package.json [bazel] Make custom karma_test rule 2022-02-23 14:53:01 +00:00
PRESUBMIT.py Remove AUTHORS check from PRESUBMIT.py 2021-09-30 14:12:18 +00:00
public.bzl remove jpeg from android builds flagged with no_codec 2022-02-14 19:29:10 +00:00
README Fix references to https://sites.google.com/site/skiadocs/. 2015-02-03 13:12:54 -02:00
README.chromium Update README.chromium. 2015-06-11 13:19:24 -07:00
RELEASE_NOTES.txt Reland "Add glGetFloatv and glSamplerParameterf to GrGLInterface." 2022-03-21 16:34:43 +00:00
whitespace.txt Push shaders.skia.org. 2022-01-19 21:46:16 +00:00
WORKSPACE.bazel [bazel] Use bazel to build task drivers 2022-03-03 16:12:18 +00:00

README 

Skia is a complete 2D graphic library for drawing Text, Geometries, and Images.

See full details, and build instructions, at https://skia.org.