Subject: Drawing objects by pixman
* Extend pixman support to allow other operations to use
pixman when doing software rendering. On x86 this isn't useful
but on ARMv7 with NEON pixman happens to do better with image
blending and nearest scale blending.
* Add tiled rotator for 32bit display as an option.
SVN revision: 66478
intel drivers don;'t like it for some odd reason - i'm trying to track
it down but i can't sanely try middlegrounds right now (eg dont
dlopen/dlsym but actually directly assign symbols etc.), so back out
and let's figure this out before it goes back in :(
SVN revision: 66308
addition to evas gl backend.
Working on different mobile devices, we've noticed that the cost of context
switch (MakeCurrent) in GL can be very expensive depending on the driver
implementation. To minimize the poorly written driver's context switch
overhead, I've implemented a state tracking layer on top of the driver
implemented GL.
Essentially, this layer wraps all the GL/Glue(GLX/EGL) APIs and manages its own
state changes. Internally, only one real GL context is created and logical
contexts are created every time a user requests context creation. The logical
contexts keep track of its states and sets only the necessary states
(the ones that are different than the current ones)
when there is a MakeCurrent request. The real MakeCurrent gets called when
there is a Surface/Window change request.
The GL library is dlopened and all the APIs are dlsym'ed and wrapped
accordingly. All the GL functions are in evas_gl_core.{h,c}.
Here's a very simply flow of the code.
- all the APIs are exported as function pointers (*glsym_glBegin),
(*glsm_eglCreatContext), and etc.
- all the native GL/Glue(GLX/EGL) APIs are dlsym'ed as _sym_glBegin,
_sym_eglCreateContext, and etc.
- all the fastpath APIs are implmemnted as fpgl_glBegin,
fpgl_eglCreateContext, and etc.
- if faspath is seletected, the exported APIs are set accordingly
ie. glsym_glBegin = fpgl_glBegin;
- default mode is the regular gl symbols are directly set.
ie. glsym_glBegin = _sym_glBegin;
I have an Environment variable where you can set it to three different Modes
EVAS_GL_FASTPATH = 0 // Default mode. Regular GL symbols are directly loaded
EVAS_GL_FASTPATH = 1 // Fastpath mode. Takes the path described above.
EVAS_GL_FASTPATH = 2 // Wrapped mode. All the regular GL functions are
wrapped once. This can be used for various
purposes
Since all the GL symbols are now loaded in this library, I took out all
the gl symbol loading parts in the evas gl backend as you'll see in the patch.
The changes to the engine and the backend itself is pretty minor.
There are still some known issues to hammer out but I thought we're at a good
place for an initial version so that my source doesn't diverge too much.
Known Issues and To Do's
* Current GL Fastpath version doesn't support multiple threads. Instead of
having one global real context, I would need to do it for each thread. I'll
get on this soon.
* Issues running Evas GL on certain conditions. When running the elementary
test (with gl engine), if you run ELMGLview test that runs in ON_DEMAND mode,
everything works fine. BUT, when you run the ELMGLView test in ALWAYS
mode, the subsequent elm tests shows blank screen. When you destroy the
GLView window, everything else comes on fine.
* Resource protection code. This actually applies to Evas GL code in general
as well. Since all the resources are shared among all the contexts that get
created, I would like to eventually have a resource protecting mechanism that
prevents access to resources outside of its context unless specifically
specified.
I'm attaching three files
- evas_gl_core.h, evas_gl_core.c, fastpath.patch
To get the code running...
- copy evas_gl_core.{c,h} to src/modules/engine/gl_common/
- apply the fastpath.patch
- compile/install evas
- to run with fastpath GL (ie. % EVAS_GL_FASTPATH=1 ./evasgl_sample1)
SVN revision: 65891
Subject: [E-devel] [E-Devel][Patch] Evas GL Color Format Enum change
(and ElmGLview changes accordingly)
I'm submitting a patch that changes the color format for Evas GL.
When I first wrote Evas_GL, I just had EVAS_GL_RGB_8 and EVAS_GL_RGBA_8 and etc
but it was misleading for some people. It was more of a filler since I couldn't decide on
a name. I'm finally changing it to make it more clear.
SVN revision: 64491
This was causing the fb engine to draw incorrectly when the virtual size
was different from the size (xres != xres_virtual). For example, it
happens an additional monitor is plugged into a notebook.
Patch for SiT.
SVN revision: 64259
Subject: [E-devel] [Patch] modify gl engine's animated function
related with cache entry
I modified the gl engine code related with animated images
This is very trivial. Evas image object passes images to the engine.
In the software engine, it is a cache entry , but in the GL engine, it is
an Evas_GL Image. So I modified the gl engine code to get the cache entry
from the gl image.
SVN revision: 64143
Carsten Haitzler
Christopher Michael
Michael BOUCHAUD
Sanghee Park
Cedric BAIL
Jiyoun Park
Youness Alaoui
Nicolas Aguirre
Vincent Torri
Mike Blumenkrantz
Sung W. Park
Rafael Antognolli
Jiyoun Park