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81 lines
1.8 KiB
HTML
81 lines
1.8 KiB
HTML
<!DOCTYPE HTML>
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<title>WebGL test: Drawing with a null program</title>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" href="/tests/SimpleTest/test.css">
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<script src="driver-info.js"></script>
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<script src="webgl-util.js"></script>
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<script id="vs" type="x-shader/x-vertex">
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void main(void) {
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gl_PointSize = 16.0;
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gl_Position = vec4(0.0, 0.0, 0.0, 1.0);
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}
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</script>
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<script id="fs" type="x-shader/x-fragment">
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precision mediump float;
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void main(void) {
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gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
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}
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</script>
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<body>
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<canvas id="c" width="64" height="64"></canvas>
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<script>
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// Give ourselves a scope to return early from:
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(function() {
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var gl = WebGLUtil.getWebGL('c');
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if (!gl) {
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todo(false, 'WebGL is unavailable.');
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return;
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}
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function errorFunc(str) {
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ok(false, 'Error: ' + str);
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}
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WebGLUtil.setErrorFunc(errorFunc);
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WebGLUtil.setWarningFunc(errorFunc);
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gl.disable(gl.DEPTH_TEST);
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var prog = WebGLUtil.createProgramByIds(gl, 'vs', 'fs');
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if (!prog) {
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ok(false, 'Program linking should succeed.');
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return;
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}
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function checkGLError(func, info, refValue) {
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if (!refValue)
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refValue = 0;
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var error = gl.getError();
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func(error == refValue,
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'[' + info + '] gl.getError should be 0x' + refValue.toString(16) +
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', was 0x' + error.toString(16) + '.');
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}
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// Start drawing
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checkGLError(ok, 'after setup');
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gl.useProgram(prog);
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gl.drawArrays(gl.POINTS, 0, 1);
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checkGLError(ok, 'after non-null-program DrawArrays');
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gl.useProgram(null);
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gl.drawArrays(gl.POINTS, 0, 1);
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checkGLError(ok, 'after null-program DrawArrays', gl.INVALID_OPERATION);
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ok(true, 'Test complete.');
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})();
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</script>
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