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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 /debugger/QT | |
| 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 'debugger/QT')
| -rw-r--r-- | debugger/QT/SkGLWidget.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/debugger/QT/SkGLWidget.cpp b/debugger/QT/SkGLWidget.cpp index baee2bbdac..44a15dca38 100644 --- a/debugger/QT/SkGLWidget.cpp +++ b/debugger/QT/SkGLWidget.cpp @@ -20,7 +20,7 @@ SkGLWidget::~SkGLWidget() { void SkGLWidget::setSampleCount(int sampleCount) { QGLFormat currentFormat = format(); - currentFormat.setSampleBuffers(sampleCount > 0); + currentFormat.setSampleBuffers(sampleCount > 1); currentFormat.setSamples(sampleCount); setFormat(currentFormat); } @@ -89,6 +89,7 @@ GrBackendRenderTarget SkGLWidget::getBackendRenderTarget() { int sampleCnt; GR_GL_GetIntegerv(fCurIntf.get(), GR_GL_FRAMEBUFFER_BINDING, &info.fFBOID); GR_GL_GetIntegerv(fCurIntf.get(), GR_GL_SAMPLES, &sampleCnt); + sampleCnt = SkTMax(sampleCnt, 1); GR_GL_GetIntegerv(fCurIntf.get(), GR_GL_STENCIL_BITS, &stencilBits); // We are on desktop so we assume the internal config is RGBA info.fFormat = GR_GL_RGBA8; |