Bug #4092053
The problem always existed but was made visible by partial invalidation.
When saving a layer, the renderer would try to postpone glClear()
operations until the next drawing command. This however does not work
since the clip might have changed. The fix is rather simple and
simply gets rid of this "optimization" (that turned out to be
usless anyway given how View issues saveLayer() calls.)
This change also fixes an issue with gradients (color stops where
not properly computed when using a null stops array) and optimizes
display lists rendering (quickly rejects larger portions of the
tree to avoid executing unnecessary code.)
Change-Id: I0f5b5f6e1220d41a09cc2fa84c212b0b4afd9c46
Bug #3461349
This change also fixes two bugs that prevented partial invalidates
from working with other views. Both bugs were in our EGL implementation:
they were preventing the caller from comparing the current context/surface
with another context/surface. This was causing HardwareRenderer to always
redraw the entire screen.
Change-Id: I33e096b304d4a0b7e6c8f92930f71d2ece9bebf5
Bug #3413433
This helps Launcher when a widget updates during a scroll, or when interacting
with widgets on the workspace if layers are still turned on.
Change-Id: Ic7a42eb34f74f4ae988039754f815e2efd1d1e4f
Previously, display lists were used only if hardware acceleration
was enabled for an application (hardwareAccelerated=true) *and* if
setDrawingCacheEnabled(true) was called. This change makes the framework
use display lists for all views in an application if hardware acceleration
is enabled.
In addition, display list renderering has been optimized so that
any view's recreation of its own display list (which is necessary whenever
the visuals of that view change) will not cause any other display list
in its parent hierarchy to change. Instead, when there are any visual
changes in the hierarchy, only those views which need to have new
display list content will recreate their display lists.
This optimization works by caching display list references in each
parent display list (so the container of some child will refer to its
child's display list by a reference to the child's display list). Then when
a view needs to recreate its display list, it will do so inside the same
display list object. This will cause the content to get refreshed, but not
the reference to that content. Then when the view hierarchy is redrawn,
it will automatically pick up the new content from the old reference.
This optimization will not necessarily improve performance when applications
need to update the entire view hierarchy or redraw the entire screen, but it does
show significant improvements when redrawing only a portion of the screen,
especially when the regions that are not refreshed are complex and time-
consuming to redraw.
Change-Id: I68d21cac6a224a05703070ec85253220cb001eb4
With this change, the rendere keeps track of what regions are rendered into
and generates a mesh that matches these regions exactly. The mesh is used
to composite the layer on screen.
Change-Id: I1f342576b9134fb29caff7fb8f4c1da179fe956d
The new implementation relies on OpenGLRenderer's existing layer
code instead of duplicating it. The new code is much cleaner, with
simpler and better APIs and allows tracking of drawn regions inside
layers. Region tracking is not yet enabled but this will be done
in a future CL.
Change-Id: Ie826121a2227de8252c77b992a61218defea5143
With this new backend, a hardware layer is only recreated when
its associated view is udpated. This offers fast composition
in GL and fast update of the layer in GL as well.
Change-Id: I97c43a612f5955c6bf1c192c8ca4af10fdf1d076
Bug #3282805
This bug was introduced with a previous refactoring. This also fixes
issues with setting the alpha when drawing bitmaps.
Change-Id: Id47641d26a4536c7e540041f92243bf6db9fc96d
This is the first step of the refactoring:
- drawColorRect
- drawTextureMesh
Remaining methods to refactor:
- setupTextureAlpha8
- drawPath
- setupShadow
- drawText
- drawLines
- composeLayerRegion
Change-Id: I0fced6a05b6b6eee10ee7cef0c3fbdaa6cefab20
Lines were not drawing in Calendar because they were getting clipped
by the previous clip rectangle. This change simply updates the scissor
as needed. This change also reduces the number of state changes in GL.
Change-Id: I41ab13dca3a33cfa6d1a44371c48852ab418b04e
This optimization is currently disabled until Launcher is
modified to take advantage of it. The optimization can be
enabled by turning on RENDER_LAYERS_AS_REGIONS in the
OpenGLRenderer.h file.
Change-Id: I2fdf59d0f4dc690a3d7f712173ab8db3848b27b1
This change batches calls to glScissor() and removes extra GL
queries and glActiveTexture() calls.
Change-Id: I1cd079d314f87cd9c088f95c8d4909c2f860f6aa
This change detects empty quads in 9patches and removes them from
the mesh to avoid unnecessary blending.
Change-Id: I4500566fb4cb6845d64dcb59b522c0be7a0ec704
Add a glGetError() check on every frame
Don't attempt to create textures larger than the maximum size allowed
Change-Id: Iee4afae16089406dbe8bf10fc93b674f1271a0ca
The implementation is simple but tricky. Leave explanations to my
future self so that I don't invent a time machine to come back to
now and slap my self.
This change also simplifies the way the GL blending function is
chosen when compositing a layer. It reuses existing OpenGLRenderer
APIs and is easier to understand.
Change-Id: I1b9cf8c5d51e09836d85b8cf157a1c284aa65c59
This adds the ability to blend with the framebuffer using Darken,
Lighten, Add, Multiply, Overlay and Screen.
Change-Id: Iae01a53797d4ad39c373cba6ff2a42293129da1a
