99 lines
5.0 KiB
HTML
99 lines
5.0 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>WebGL attrib location length tests</title>
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<script src="../../../resources/js-test.js"></script>
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<script src="resources/webgl-test.js"> </script>
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<script src="resources/webgl-test-utils.js"> </script>
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</head>
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<body>
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<canvas id="example" width="50" height="50">
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There is supposed to be an example drawing here, but it's not important.
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</canvas>
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<div id="description">Verify limits on the lengths of attrib locations.</div>
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<div id="console"></div>
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<script id="goodVertexShader1" type="x-shader/x-vertex">
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// A vertex shader where the needed attrib location is long, but not over the limit.
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attribute vec4 vPosition01234567890123456789012345678901234567890123456789012345678901234567890;
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void main()
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{
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gl_Position = vPosition01234567890123456789012345678901234567890123456789012345678901234567890;
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}
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</script>
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<script id="goodVertexShader2" type="x-shader/x-vertex">
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// A vertex shader where the needed attrib location is exactly 256 characters.
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attribute vec4 vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456;
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void main()
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{
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gl_Position = vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456;
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}
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</script>
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<script id="badVertexShader" type="x-shader/x-vertex">
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// A vertex shader where the needed attrib location is 257 characters.
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attribute vec4 vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567;
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void main()
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{
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gl_Position = vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567;
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}
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</script>
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<script id="fragmentShader" type="x-shader/x-fragment">
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precision mediump float;
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void main() {
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gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
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}
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</script>
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<script>
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if (window.initNonKhronosFramework) {
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window.initNonKhronosFramework(false);
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}
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if (window.internals)
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window.internals.settings.setWebGLErrorsToConsoleEnabled(false);
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var wtu = WebGLTestUtils;
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var gl = wtu.create3DContext(document.getElementById("example"));
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debug("Test attrib location underneath the length limit");
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var program = wtu.loadProgramFromScript(gl, "goodVertexShader1", "fragmentShader");
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shouldBe('gl.getProgramParameter(program, gl.LINK_STATUS)', 'true');
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var attribLoc = gl.getAttribLocation(program, "vPosition01234567890123456789012345678901234567890123456789012345678901234567890");
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if (attribLoc == -1) {
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testFailed("attrib location was -1, should not be");
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} else {
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testPassed("attrib location should not be -1");
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}
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wtu.glErrorShouldBe(gl, gl.NONE);
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debug("Test attrib location exactly at the length limit");
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var program = wtu.loadProgramFromScript(gl, "goodVertexShader2", "fragmentShader");
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shouldBe('gl.getProgramParameter(program, gl.LINK_STATUS)', 'true');
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var attribLoc = gl.getAttribLocation(program, "vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456");
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if (attribLoc == -1) {
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testFailed("attrib location was -1, should not be");
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} else {
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testPassed("attrib location should not be -1");
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}
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wtu.glErrorShouldBe(gl, gl.NONE);
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debug("Test attrib location over the length limit");
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debug("Shader compilation should fail");
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shouldBe('wtu.loadShaderFromScript(gl, "badVertexShader", gl.VERTEX_SHADER, function (err) {})', 'null');
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wtu.glErrorShouldBe(gl, gl.NONE);
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debug("Attempt to bind too-long attrib location should produce error");
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var program = gl.createProgram();
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gl.bindAttribLocation(program, 0, "vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567");
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wtu.glErrorShouldBe(gl, gl.INVALID_VALUE);
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debug("Attempt to fetch too-long attrib location should produce error");
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shouldBe('gl.getAttribLocation(program, "vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567")', '-1');
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wtu.glErrorShouldBe(gl, gl.INVALID_VALUE);
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</script>
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</body>
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</html>
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