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Add gles2 tag to support using ANGLE (EGL+ OpenGLES2) on windows #113

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merged 1 commit into from
Mar 6, 2021
Merged

Add gles2 tag to support using ANGLE (EGL+ OpenGLES2) on windows #113

merged 1 commit into from
Mar 6, 2021

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zwang
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@zwang zwang commented Mar 5, 2021

while still keep the Desktop OpenGL option default for windows.

With this change, the go-gl/gl binding can use EGL+OpenGL ES2 as an option by passing egl and gles2 tags. (using ANGLE project)

Without these tags, it can still use the default desktop OpenGL as before

Should help on: #51

still keep the Desktop OpenGL option default for windows
@zwang zwang changed the title Add gles2 tag to allowing using ANGLE (EGL+ OpenGLES2) on windows Add gles2 tag to support using ANGLE (EGL+ OpenGLES2) on windows Mar 5, 2021
@errcw
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errcw commented Mar 5, 2021

I'm curious why the "2" in the gles2 tag? As I understand it, ANGLE supports both GLES 2.0 and 3.x?

@zwang
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zwang commented Mar 5, 2021

Yeah, that's true. gles can works too.

I think I was in the mindset that I was fixing for OpenGL ES 2 and also the library from angle is libGLESv2.dll. Also I saw this tag is already being used in go-gl/glfw repo for linux,gles2

From another perspective, gles2 also can mean OpenGL ES 2 and above, which differentiates from OpenGL ES 1. Nobody should be using OpenGL ES 1 at this moment. But using gles might indicate it support OpenGL ES 1 too.

I am OK to change. But I prefer to keep this gles2 to be consistent with other places in GLFW.

Maybe should add gles3 too if we want to make it cover OpenGL ES 3.x

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errcw commented Mar 6, 2021

Thanks for thinking this through! I agree consistency is a good argument.

@errcw errcw merged commit b197509 into go-gl:master Mar 6, 2021
@zwang zwang deleted the gles2 branch March 6, 2021 04:33
errcw pushed a commit to go-gl/gl that referenced this pull request Mar 8, 2021
to support using EGL + Desktop OpenGL and EGL+OpenGLES2(ANGLE) on windows

Cover latest glow changes and the change in the two PR below
go-gl/glow#112
go-gl/glow#113

Co-authored-by: Zhao Wang <[email protected]>
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2 participants