HtmlRenderer on OpenGLES

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(pure hardware rendering1)
Render directly on the OpenGLES surface (without GDI+)
coordinate errors/ temp fix, snapshot.

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(pure hardware rendering2)
mix
HtmlRenderer ( coordinate system left-top)
and AggCanvas (coordinate system left-bottom)

lion is render with pure hardward (OpenGLES + Antialias Shader)

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GLES2 based-HtmlRenderer, early preview, NOT CORRECT

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pic 1: render with OpenGLES2, Text is rendering with PixelFarm's MiniAgg+ the Typography.

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pic 2: render with GDI+ (System.Drawing)

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Nov 2018

see more about glyph texture at PaintLab/PixelFarm#3

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Feb 2019, Progression

This is a snap shot of the HtmlRenderer that runs on
GLFW+GLES2+OpenTK,
no WinForms and no GDI+.

pic 1: 'neutral' branch

This example is different from the GLES2 example on
the readme page. The old one in readme page still
need some WinForm supports, but the new one dose not.

Plan=>

1. clean up (The code still in a 'mess' state, let me clean it up)
2. create .netcore examples (Win, macOS, Linux).

It should not be a long time :)

In short, essential dll dependencies are

In short, essential dll dependencies are

1. OpenTK ( cross-platform => Yes)
2. GLES2 ( cross-platform => Yes)
3. GLFW3.2.1 ( cross-platform => Yes)
4. PixelFarm+Typography ( cross-platform => Yes)