README.md

Notes by Joe

This has two ways to compile the GPU

1. Neon mode
2. GLES Mode

These are currently using gpulib which can link either of the either two static libs. In thoery, these could be dynamic but I'm just testing at the moment.

Status:

1. GLES - Crashes on init
2. Neon - Crashes on init DEFINE GPU_NEON
3. Unai - Crashes on init! (what even is this? Non-neon arm/cpp?) UNiversAlInterpertor? DEFINE GPU_UNAI

How to switch modes:

1. Change the static linking (if still using that) in gpulib to either gpulib-neon or gpulib-gles. I theory, I could use the GPU_NEON to control a #include "../gpu/whatever-plugin.c" right in the core code.
2. Change compiler flags in BuildFlags.xcconfig GPU_NEON controls the subclass and rendersToOpenGL var. Which other ones? I don't recall. USE_GPULIB maybe? I didn't need USE_GPULIB when using my GLES version linked right into GPULIB, not sure what it does. TODO: Look at what USE_GPULIB #ifdef does

GLES IS SPECIAL?

It seems it can compile in two ways,

1. Standaline, with gpulib_if.m
2. As a plugin, linked with gpulib without gpulib_if.

Which one works? I'm testing...

About my hacks:

1. gpu-gles/gpuPlugin.m,gpuFps.m :

At some point, I don't remember what I was doing, but I made the EAGL code work with EGL. This is probably a stupid hack just to make things compile and would exlain why it doesn't work and crashes when trying to draw a frame.