diff options
author | 2016-12-28 11:19:22 -0500 | |
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committer | 2016-12-28 16:51:17 +0000 | |
commit | 3f375d055a9bf167122a5bbf4db9753f4b46a781 (patch) | |
tree | 67ffd9b429345bd5c8e305055f9e365dafd26eb8 /tools/gpu/GrContextFactory.cpp | |
parent | e2d4141679805b4c2a711d113f2b7360cb50924c (diff) |
Add skia_enable_discrete_gpu argument to GN
This forces all of our testing tools to run with the discrete GPU in
laptop systems that have that option.
BUG=skia:
Change-Id: Ibd7629d6de5f063cdf219b3c7469210af5085d90
Reviewed-on: https://skia-review.googlesource.com/6474
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Brian Osman <brianosman@google.com>
Diffstat (limited to 'tools/gpu/GrContextFactory.cpp')
-rw-r--r-- | tools/gpu/GrContextFactory.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/gpu/GrContextFactory.cpp b/tools/gpu/GrContextFactory.cpp index 8d9bd41245..bd745bcfcd 100644 --- a/tools/gpu/GrContextFactory.cpp +++ b/tools/gpu/GrContextFactory.cpp @@ -24,6 +24,20 @@ #include "gl/GrGLGpu.h" #include "GrCaps.h" +#if defined(SK_BUILD_FOR_WIN32) && defined(SK_ENABLE_DISCRETE_GPU) +extern "C" { + // NVIDIA documents that the presence and value of this symbol programmatically enable the high + // performance GPU in laptops with switchable graphics. + // https://docs.nvidia.com/gameworks/content/technologies/desktop/optimus.htm + // From testing, including this symbol, even if it is set to 0, we still get the NVIDIA GPU. + _declspec(dllexport) unsigned long NvOptimusEnablement = 0x00000001; + + // AMD has a similar mechanism, although I don't have an AMD laptop, so this is untested. + // https://community.amd.com/thread/169965 + __declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1; +} +#endif + namespace sk_gpu_test { GrContextFactory::GrContextFactory() { } |