glslang/Test/GL_EXT_draw_instanced.vert

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#version 120
#extension GL_EXT_draw_instanced : require
#define ID gl_InstanceID
uniform mat4 gtf_ModelViewProjectionMatrix;
uniform vec3 instanceOffsets[3];
uniform vec4 va[gl_MaxVertexAttribs];
vec4 color;
void main (void)
{
vec4 vertex = vec4(va[0].xy / 3.0, va[0].zw) + vec4(instanceOffsets[ID], 1.0);
color = vec4(0, 0, 0, 0);
for (int i = 1; i < gl_MaxVertexAttribs; i++)
color += va[i];
gl_Position = gtf_ModelViewProjectionMatrix * vertex;
gl_PointSize = 1.0;
}