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Prefer kMixedSamples MSFBOType to multisampled-render-to-texture variants

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Bug: skia:7667
Change-Id: Ib5eef15ed1a2da5caf9d8be188b28341ab4d514b
Reviewed-on: https://skia-review.googlesource.com/112720
Reviewed-by: Kimmo Kinnunen FI <kkinnunen@nvidia.com>
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
This commit is contained in:
Brian Salomon 2018-03-07 09:01:05 -05:00 committed by Skia Commit-Bot
parent 461ef7af88
commit 25d07fc354
1 changed files with 6 additions and 5 deletions
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11
src/gpu/gl/GrGLCaps.cpp
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@ -941,14 +941,15 @@ void GrGLCaps::initFSAASupport(const GrContextOptions& contextOptions, const GrG
// it is part of the spec. Thus alpha8 will not be renderable for those devices.
fAlpha8IsRenderable = true;
}
// We prefer the EXT/IMG extension over ES3 MSAA because we've observed
// ES3 driver bugs on at least one device with a tiled GPU (N10).
if (ctxInfo.hasExtension("GL_EXT_multisampled_render_to_texture")) {
// We prefer multisampled-render-to-texture extensions over ES3 MSAA because we've observed
// ES3 driver bugs on at least one device with a tiled GPU (N10). However, if we're using
// mixed samples we can't use multisampled-render-to-texture.
if (fUsesMixedSamples) {
fMSFBOType = kMixedSamples_MSFBOType;
} else if (ctxInfo.hasExtension("GL_EXT_multisampled_render_to_texture")) {
fMSFBOType = kES_EXT_MsToTexture_MSFBOType;
} else if (ctxInfo.hasExtension("GL_IMG_multisampled_render_to_texture")) {
fMSFBOType = kES_IMG_MsToTexture_MSFBOType;
} else if (fUsesMixedSamples) {
fMSFBOType = kMixedSamples_MSFBOType;
} else if (ctxInfo.version() >= GR_GL_VER(3,0)) {
fMSFBOType = kStandard_MSFBOType;
} else if (ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_multisample")) {