this is computer graphics topic

QUESTION 18 viewport. In A viewport is a rectangular area of the display window. By default, it is the entire window, but it can be set to any smaller size in pres via the function following function call, what is the coordinate of the right upper corner of the view port? viewport(1.2.3.4% (1.6) (1.2) QUESTION 19 Consider a minimum GLSL fragment shader: precision mediump float: void main() { BUFragColor - vec41.0.0.0.0.0, 1.0): This shader will make the displayed point to be Green and opaque. True False QUESTION 20 Select code that will be put into a simple render function that will display a sequence of lines. gl.drawArraystgl.LINES, O, numVertices) gl.draw Arrays TRIANGLES, O. numvertices points.push(al gl.drawArraysipl.POINTS. O. numPoints): QUESTION 21 Given the following four vertices, which one cannot be on the unit circle? (1.1) (cose, cose) (sine, - cose) (sine, -sine) QUESTION 22 Which of the following call render function most times in one second? setinterval(render, 100); setinterval(render, 0); setinterval(render): setinterval(render, 1); QUESTION 18 viewport. In A viewport is a rectangular area of the display window. By default, it is the entire window, but it can be set to any smaller size in pres via the function following function call, what is the coordinate of the right upper corner of the view port? viewport(1.2.3.4% (1.6) (1.2) QUESTION 19 Consider a minimum GLSL fragment shader: precision mediump float: void main() { BUFragColor - vec41.0.0.0.0.0, 1.0): This shader will make the displayed point to be Green and opaque. True False QUESTION 20 Select code that will be put into a simple render function that will display a sequence of lines. gl.drawArraystgl.LINES, O, numVertices) gl.draw Arrays TRIANGLES, O. numvertices points.push(al gl.drawArraysipl.POINTS. O. numPoints): QUESTION 21 Given the following four vertices, which one cannot be on the unit circle? (1.1) (cose, cose) (sine, - cose) (sine, -sine) QUESTION 22 Which of the following call render function most times in one second? setinterval(render, 100); setinterval(render, 0); setinterval(render): setinterval(render, 1)