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Set ORYOL_USE_GLGETATTRIBLOCATION cmake option to ON to activate alternative vertex attribute binding code-path using glGetAttribLocation instead of glBindAttribLocation. This is necessary on platforms where GL_MAX_VERTEX_ATTRIBS is smaller then Oryol's VertexAttr::NumVertexAttrs (16). Currently the only known platform where this is the case is the Raspberry Pi where GL_MAX_VERTEX_ATTRIBS is 8. Using this code path is mutually exclusive with vertex-array-objects, because of this ORYOL_USE_GLGETATTRIBLOCATION cannot be used on platforms which use the GL 3+ core profile (e.g. OSX).

How to configure the build process:

> oryol clean all
> oryol select [config]
> oryol config

This should start ccmake or cmake-gui.

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only exactly one @ tag per line

@block MyTransform
@uniform mat4 mvp ModelViewProj
vec4 transform(vec4 pos) {
  return mvp * pos;
}
@end

@vs MyVertexShader

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    #if ORYOL_OPENGLES2
        strBuilder.Append("#define ORYOL_OPENGLES2 (1)\n");
        if (GL_VERTEX_SHADER == glShaderType) {
            strBuilder.Append("#define VS_INPUT(type,name) attribute type name\n");
            strBuilder.Append("#define VS_OUTPUT(type,name) varying type name\n");
        }
        if (GL_FRAGMENT_SHADER == glShaderType) {
            strBuilder.Append("precision mediump float;\n");
            strBuilder.Append("#define FS_INPUT(type,name) varying type name\n");
            strBuilder.Append("#define TEXTURE2D(x,y) texture2D(x,y)\n");            

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//------------------------------------------------------------------------------
//  test C++11 atomics
//  compile native version with:
//  clang -std=c++11 -Wno-format atomic_test.cpp 
//  compile emscripten version with:
//  emcc -std=c++11 -Wno-format atomic_test.cpp
//------------------------------------------------------------------------------
#include <atomic>
#include <cstdio>