const char *vs =
#ifdef EMSCRIPTEN
	"#version 300 es\n"
	"precision highp float;"
#else
	"#version 330 core\n"
#endif
	"layout (location = 0) in float aPos_x;"
	"layout (location = 1) in float aPos_y;"
	"layout (location = 2) in float aPos_z;"
	"layout (location = 3) in float aPos_w;"

	"layout (location = 4) in float aNormal_x;"
	"layout (location = 5) in float aNormal_y;"
	"layout (location = 6) in float aNormal_z;"
	"layout (location = 7) in float aNormal_w;"

	"uniform float angle;"
	"uniform float i;"
	"uniform vec4 color;"

	"uniform mat4 fix;"
	"uniform mat4 rot;"

	"out vec3 Normal;"
	"out vec3 FragPos;"
	"out vec4 Color;"

	"mat2 rotate2d( float angle )"
	"{"
	"return mat2( cos(angle), sin(angle), -sin(angle), cos(angle) );"
	"}"

	"void main()"
	"{"
	"	Color=color;"

	"	vec3 aNormal = vec3(aNormal_x,aNormal_y,aNormal_z);"
	"	vec3 aPos = vec3(aPos_x,aPos_y,aPos_z);"

	"	aNormal[int(i)] = (vec2(aNormal[int(i)], aNormal_w) * "
	"rotate2d(angle))[0];"
	"	aPos[int(i)] = (vec2(aPos[int(i)], aPos_w) * rotate2d(angle))[0];"

	"	Normal = mat3(transpose(inverse(rot))) * aNormal;"
	"	gl_Position = fix * rot * vec4( aPos, 1.0 );\n"
	"	FragPos = vec3( rot * vec4(aPos, 1.0));"
	"}";

const char *fs_plain =
#ifdef EMSCRIPTEN
	"#version 300 es\n"
	"precision highp float;"
#else
	"#version 330 core\n"
#endif
	"out vec4 FragColor;"
	"in vec3 Normal;"
	"in vec3 FragPos;"
	"in vec4 Color;"

	"void main()"
	"{"
	"	FragColor = vec4(pow(vec3(Color),vec3(1.0/2.2)),Color.a);"
	"}";

const char *fs =
#ifdef EMSCRIPTEN
	"#version 300 es\n"
	"precision highp float;"
#else
	"#version 330 core\n"
#endif

	"in vec3 Normal;"
	"in vec3 FragPos;"
	"in vec4 Color;"

	"out vec4 FragColor;"

	"void main()"
	"{"

	"   vec3 viewPos = vec3(0, 0, -15);\n"
	"   vec3 viewDir = normalize(viewPos - FragPos);\n"

	"   vec3 lightPos = viewPos;\n"
	"   vec3 lightDir = normalize(lightPos - FragPos);\n"

	"   vec3 halfwayDir = normalize(lightDir + viewDir);\n"

	"   float specular = pow(abs(dot(normalize(Normal), halfwayDir)), 32.0);\n"
	"   float diffuse = abs(dot(normalize(Normal), lightDir));\n"

	"   vec3 result = pow((0.5 + 0.5*diffuse + 1.5*specular) * Color.rgb, "
	"vec3(1.0/2.2));\n"
	"   FragColor = vec4(result, Color.a);\n"
	"}";