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// this is set from higher level.  think of it as the upper model matrix
uniform mat4 pixelToClipMat;

uniform vec4 col_uni;

attribute vec2 pos_attr;
attribute vec2 tex_attr;
attribute vec4 col_attr;

varying vec4 col_var;
varying vec2 tex_var;

void main()
{
	// account for translation and rotation of the primitive into [-1,1] spatial default.
    gl_Position = pixelToClipMat * vec4(pos_attr.x, pos_attr.y, 0, 1);

    col_var = col_attr * col_uni;
    tex_var = tex_attr;
}