ee107cd491
Some hardware (preferably mobile) working on GLES3 way faster than on desktop GL and supports more features. This commit will allow using GLES3 if glamor is running over GL ES, and version 3 is supported. Changes are the following: 1. Add compatibility layer for 120/GLES2 shaders with defines in and out 2. Switch attribute and varying to in and out in almost all shaders (aside gradient) 3. Add newGL-only frag_color variable, which defines as gl_FragColor on old pipelines 4. Switch all shaders to use frag_color. 5. Previous commit is reverted, because now we have more than one GL ES version, previous commit used to set version 100 for all ES shaders, which is not true for ES 3 Signed-off-by: Konstantin Pugin <ria.freelander@gmail.com>
X Server
The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.
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