Enigma2 with GLES and WQHD
by @Captain
What is GLES?
GLES stands for "OpenGL for Embedded Systems". It is a variant of OpenGL
specially developed for embedded devices.
In the previous Enigma2 OSD, many graphics elements are drawn by the
CPU or older hardware blitters. With the new e2egl backend, the following
elements, among others, can be rendered via the GPU and shaders:
Texts and characters
PNGs, Icons, and Skin Graphics
Areas, Lines and Gradients
Transparency and alpha blending
Scaling and rounded corners
Menus, lists, and windows
Fade, slide, zoom and pop-up animations
This can relieve the CPU and allows for a smoother OSD, especially
with large resolutions, extensive skins, EPG views and animations.
What is WQHD for Enigma2?
WQHD has a resolution of 2560 × 1440 pixels. For comparison:
HD: 1280 × 720
Full HD: 1920 × 1080
WQHD: 2560 × 1440
WQHD has around 78 percent more pixels than Full HD. This allows fonts,
picons, icons, EPG data and other skin elements to be displayed much
sharper. There is also more space available for modern skin layouts.
This is about the resolution of the Enigma2 OSD and not about the video
resolution of the running channel. The TV picture can still be output
independently in 720p, 1080p or 2160p.
A true WQHD skin must be adjusted to 2560 × 1440. An existing Full HD
skin does not automatically become an optimal WQHD skin due to the higher
resolution.
What's new?
Optional EGL/GLES backend for Enigma2
Support for GLES2 and – depending on the box – GLES3
GPU rendering for many OSD and skin elements
Improved font and glyph rendering with Font Atlas
Text, area, and character batching to reduce drawcalls
Texture cache for frequently used skin graphics
GPU-based window and OSD animations
New OSD animation profiles directly in the Enigma2 settings
Adjustments for OSD Positioning and OSD Calibration
Support for PiG/MiniTV and transparent video clips
Customized screenshot and grab functions
WQHD skin detection via wqhdskin
Detection of the active GLES backend via e2egl
Native EGL connections for Amlogic, Broadcom, Vu+, V3D and HiSilicon
Boxes prepared for GLES and WQHD
The following models or platform families are currently provided for
in the code for GLES and WQHD. The practical release takes place
after a successful box test.
Dreambox: Dream One and Two, 900 and 920
Vu+ARM 4K : VU+ Zero, Uno, Solo, Ultimo
Other Broadcom and V3D 4K platforms: Edision, GigaBlue, Zgemma
HiSilicon Boxes : Octagon, UClan, GigaBlue, Amiko
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