WASM doesn't render correctly on Mac OS X about bracket-lib HOT 7 CLOSED

It's not committed or working for all the examples yet, but I've made some pretty significant progress. This ended up expanding into "this really could be better code".

So the new pipeline:

• Uses a single shader to render consoles.
• Each console is one draw call of a single quad covering the whole screen.
• Each console also updates a couple of textures containing character number, and colors (tiny dynamic textures, 80x50)
• The shader now calculates the console position, samples the console buffer and font buffers and renders the console in a single pass.

I've got to get background colors, offsets and the post-processing in there - but so far, so good.

The following should give you example 1, including on a Mac (it works on my VirtualBox version):

http://bfnightly.bracketproductions.com/wasmtest-old2/ex01/

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I believe it is working! :-)

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Well, I've fixed a bunch of OTHER little bugs in the WebGL pipeline, and got it down to 1 pass with no framebuffer. Finally got a VM Mac working (slowly), so I can now see/replicate the error. Will keep hacking.

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I did a bunch of reading, and found that lots of people have problems with WebGL2 on OS X - including quite a few Unity users hitting the exact same bug (black screen). See the branch, webgl2-osx for work on this.

Based on my reading, the patch ( c3d1481 ):

• Downgrades shaders to version 100 from version 300 es.
• Removes the need for all extensions.
• Tweaks the framebuffer creation (WASM only to avoid problems with AMD on Glutin) to use a GL_UNSIGNED_BYTE backing buffer.
• Tweaks the framebuffer mode to use GL_NEAREST and not the various GL_LINEAR modes.

Downgrading to version 100 and tweaking the shaders to use the old syntax still ran on Windows, but the console gave a "GL invalid format" error, which looked like a big clue. So I performed the other steps, and now it runs well on my phone (Android, both Firefox and Chrome) and laptop (Windows 10, Chrome and Firefox).

I'll test as soon as I get access to a Mac. If anyone reading this has a Mac available, could you give these a go, please?

http://bfnightly.bracketproductions.com/wasmtest-old2/ex10/

http://bfnightly.bracketproductions.com/wasmtest-old2/ex01/

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Hearing from friends with Macs that this didn't help.

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Woot! I still have to figure out the mipmap warning, but all the demos are now working on my virtual Mac.

http://bfnightly.bracketproductions.com/wasmtest-old2/ex01/
(replace the 01 with 01 - 17 to see them all)

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Merged branch to master. Going to pull it into the roguelike tutorial and rebuild to test there also, so far so good.

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