111 lines
4.2 KiB
HTML
111 lines
4.2 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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<script src="../../../resources/js-test.js"></script>
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<script src="resources/webgl-test.js"></script>
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</head>
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<body>
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<div id="description"></div>
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<div id="console"></div>
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<script>
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description("Tests that index validation verifies the correct number of indices");
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if (window.internals)
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window.internals.settings.setWebGLErrorsToConsoleEnabled(false);
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function sizeInBytes(type) {
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switch (type) {
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case gl.BYTE:
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case gl.UNSIGNED_BYTE:
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return 1;
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case gl.SHORT:
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case gl.UNSIGNED_SHORT:
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return 2;
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case gl.INT:
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case gl.UNSIGNED_INT:
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case gl.FLOAT:
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return 4;
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default:
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throw "unknown type";
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}
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}
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var gl = create3DContext();
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var program = loadStandardProgram(gl);
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// 3 vertices => 1 triangle, interleaved data
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var dataComplete = new Float32Array([0, 0, 0, 1,
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0, 0, 1,
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1, 0, 0, 1,
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0, 0, 1,
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1, 1, 1, 1,
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0, 0, 1]);
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var dataIncomplete = new Float32Array([0, 0, 0, 1,
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0, 0, 1,
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1, 0, 0, 1,
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0, 0, 1,
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1, 1, 1, 1]);
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var indices = new Uint16Array([0, 1, 2]);
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debug("Testing with valid indices");
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var bufferComplete = gl.createBuffer();
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gl.bindBuffer(gl.ARRAY_BUFFER, bufferComplete);
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gl.bufferData(gl.ARRAY_BUFFER, dataComplete, gl.STATIC_DRAW);
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var elements = gl.createBuffer();
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gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, elements);
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gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, indices, gl.STATIC_DRAW);
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gl.useProgram(program);
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var vertexLoc = gl.getAttribLocation(program, "a_vertex");
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var normalLoc = gl.getAttribLocation(program, "a_normal");
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gl.vertexAttribPointer(vertexLoc, 4, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), 0);
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gl.enableVertexAttribArray(vertexLoc);
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gl.vertexAttribPointer(normalLoc, 3, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), 4 * sizeInBytes(gl.FLOAT));
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gl.enableVertexAttribArray(normalLoc);
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shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
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glErrorShouldBe(gl, gl.NO_ERROR);
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shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)');
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glErrorShouldBe(gl, gl.NO_ERROR);
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debug("Testing with out-of-range indices");
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var bufferIncomplete = gl.createBuffer();
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gl.bindBuffer(gl.ARRAY_BUFFER, bufferIncomplete);
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gl.bufferData(gl.ARRAY_BUFFER, dataIncomplete, gl.STATIC_DRAW);
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gl.vertexAttribPointer(vertexLoc, 4, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), 0);
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gl.enableVertexAttribArray(vertexLoc);
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gl.disableVertexAttribArray(normalLoc);
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debug("Enable vertices, valid");
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glErrorShouldBe(gl, gl.NO_ERROR);
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shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)');
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glErrorShouldBe(gl, gl.NO_ERROR);
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debug("Enable normals, out-of-range");
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gl.vertexAttribPointer(normalLoc, 3, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), 4 * sizeInBytes(gl.FLOAT));
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gl.enableVertexAttribArray(normalLoc);
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glErrorShouldBe(gl, gl.NO_ERROR);
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shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)');
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glErrorShouldBe(gl, gl.INVALID_OPERATION);
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debug("Test with enabled attribute that does not belong to current program");
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gl.disableVertexAttribArray(normalLoc);
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var extraLoc = Math.max(vertexLoc, normalLoc) + 1;
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gl.enableVertexAttribArray(extraLoc);
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debug("Enable an extra attribute with null");
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glErrorShouldBe(gl, gl.NO_ERROR);
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shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)');
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glErrorShouldBe(gl, gl.INVALID_OPERATION);
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debug("Enable an extra attribute with insufficient data buffer");
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gl.vertexAttribPointer(extraLoc, 3, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), 4 * sizeInBytes(gl.FLOAT));
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glErrorShouldBe(gl, gl.NO_ERROR);
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shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)');
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debug("Pass large negative index to vertexAttribPointer");
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gl.vertexAttribPointer(normalLoc, 3, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), -2000000000 * sizeInBytes(gl.FLOAT));
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glErrorShouldBe(gl, gl.INVALID_VALUE);
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shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)');
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</script>
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</body>
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</html>
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