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| author |  Brian Salomon <bsalomon@google.com> | 2018-02-01 12:54:30 -0500 |
|---|---|---|
| committer |  Skia Commit-Bot <skia-commit-bot@chromium.org> | 2018-02-01 18:16:58 +0000 |
| commit | 48825b11ad25c98b9a4884d5cc0edd4e290c4409 (patch) | |
| tree | 4278b01107ad8da03453c879ee50ce1a471d2ee2 /src/gpu/GrRenderTargetProxy.cpp | |
| parent | f8393c861975350c4ca9d4f6c95b186c081dbbcf (diff) | |
Redefine the meaning of sample counts in GPU backend.
Old: 0 -> nonMSAA
1+ -> MSAA
New:
0 -> error/unsupported
1 -> nonMSAA
2+ -> MSAA
We still allow 0 to mean nonMSAA in three sets of public APIs for backwards compatibility:
1) SkSurface factories
2) GrBackendRenderTarget constructors
3) GrCaps::getSampleCnt()'s requestedCount parameter
However, we immediately clamp to 1 and treat 0 as invalid/non-renderable internally.
This also changes the behavior when using a large sample count. We now fail in that case rather than using the largest sample available sample count. GrCaps::getSampleCount() will return 0 in this case.
Bug: skia:
Change-Id: Ida22c6b22c1365e563c9046b611e88bf5eb3ff33
Reviewed-on: https://skia-review.googlesource.com/101560
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Diffstat (limited to 'src/gpu/GrRenderTargetProxy.cpp')
| -rw-r--r-- | src/gpu/GrRenderTargetProxy.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/gpu/GrRenderTargetProxy.cpp b/src/gpu/GrRenderTargetProxy.cpp index 9eb37a0b2f..841d4b18fd 100644 --- a/src/gpu/GrRenderTargetProxy.cpp +++ b/src/gpu/GrRenderTargetProxy.cpp @@ -26,7 +26,7 @@ GrRenderTargetProxy::GrRenderTargetProxy(const GrCaps& caps, const GrSurfaceDesc , fRenderTargetFlags(GrRenderTargetFlags::kNone) { // Since we know the newly created render target will be internal, we are able to precompute // what the flags will ultimately end up being. - if (caps.usesMixedSamples() && fSampleCnt > 0) { + if (caps.usesMixedSamples() && fSampleCnt > 1) { fRenderTargetFlags |= GrRenderTargetFlags::kMixedSampled; } if (caps.maxWindowRectangles() > 0) { @@ -97,7 +97,11 @@ sk_sp<GrSurface> GrRenderTargetProxy::createSurface(GrResourceProvider* resource } size_t GrRenderTargetProxy::onUninstantiatedGpuMemorySize() const { - int colorSamplesPerPixel = this->numColorSamples() + 1; + int colorSamplesPerPixel = this->numColorSamples(); + if (colorSamplesPerPixel > 1) { + // Add one for the resolve buffer. + ++colorSamplesPerPixel; + } // TODO: do we have enough information to improve this worst case estimate? return GrSurface::ComputeSize(this->config(), this->width(), this->height(), |