void {@native glTexCoord2f}(GLfloat s, GLfloat t);
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gl.glVertex3d(-1, 1,0); gl.glTexCoord2f(extendX,0); gl.glVertex3d(1, 1,0); gl.glTexCoord2f(extendX,extendY); gl.glVertex3d(1, -1,0); gl.glTexCoord2f(0,extendY); gl.glVertex3d(-1, -1,0); gl.glEnd(); drawable.swapBuffers();