At this point, the UI renders in the browser through WebGL, with no GL errors.
Progress towards #446🕸️ Web support
* main: enable render loop on wasm, disable events_loop on wasm for now
Allow for testing rendering on WebGL
* chunk_builder: disable on wasm due to no threads on wasm
Chunks will not be correctly rendered, but other parts of the program now can be tested instead of crashing in std::thread
* chunk_frag: glBindFragDataLocation is only on native, WebGL 2 uses in-shader specification layout(location=), which works on native in OpenGL 4.1 but we're on OpenGL 3.2 - see https://www.khronos.org/opengl/wiki/Fragment_Shader#Output_buffers
* std_or_web: always fail File::open() to avoid servers.json empty string JSON parse failing
* www: update installation instructions
* render: fix apparent TEXTURE_MAX_LEVEL -> TEXTURE_MAG_FILTER typo
* render: correct type for internalFormat DEPTH_COMPONENT24
Valid combinations of format, type, and internalFormat are listed at https://www.khronos.org/registry/OpenGL/specs/es/3.0/es_spec_3.0.pdf#page=124&zoom=100,168,206. We had UNSIGNED_BYTE for DEPTH_COMPONENT24, but only UNSIGNED_INT is a valid type for this internal format.
Fixes texImage: Mismatched internalFormat and format/type: 0x81a6 and 0x1902/0x1401
and fixes the subsequent GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT error.
* render: gl::MULTISAMPLE (0x809d) is not available on WebGL
Fixes WebGL warning: enabled: cap: Invalid enum value <enum 0x809d> 0.bootstrap.js line 11 > eval:851:21
* gl: replace set_float_multi_raw with a safer set_float_multi
Removes use of passing raw pointers in set_float_multi_raw parameters
Instead, casts raw pointers to flatten, similar to set_matrix_multi
Fixes uniform setter: (uniform colorMul[0]) values length (1) must be a positive integer multiple of size of <enum 0x8b52>.
* render: model: send BYTE to id attrib, fixes type mismatch
Fixes drawElementsInstanced: Vertex attrib 0 requires data of type INT, but is being supplied with type UINT
22f6c83d59