Summary:
While investigating BUG 387313 I noticed that blending might be disabled
for subsurfaces. Blending was disabled before rendering the subsurfaces
and it is not checked whether the surfaces have an alpha channel or not.
This change addresses this problem by disabling blending after all
subsurfaces have been rendered and enabling blending if a subsurface has
an alpha channel.
Unfortunately this does not fix the investigated bug.
Reviewers: #kwin, #plasma
Subscribers: plasma-devel, kwin
Tags: #plasma
Differential Revision: https://phabricator.kde.org/D10060
Summary:
Unfortunately a rather large change which required more refactoring than
initially expected. The main problem was that some parts needed to go
into platformsupport so that the platform plugins can link them. Due to
the rather monolithic nature of scene_opengl.h a few changes were
required:
* SceneOpenGL::Texture -> SceneOpenGLTexture
* SceneOpenGL::TexturePrivate -> SceneOpenGLTexturePrivate
* texture based code into dedicated files
* SwapProfiler code into dedicated files
* SwapProfiler only used in x11 variants
* Safety checks for OpenGL scene moved into the new plugin
* signal declared in SceneOpenGL moved to Scene, so that we don't need
to include SceneOpenGL in composite
Test Plan: Nested OpenGL compositor works
Reviewers: #kwin, #plasma
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D7740
