131 lines
4.2 KiB
HTML
131 lines
4.2 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<title>WebGL vertexAttribPointer Conformance Tests</title>
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<script src="resources/desktop-gl-constants.js" type="text/javascript"></script>
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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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<div id="description"></div>
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<div id="console"></div>
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<canvas id="canvas" width="2" height="2"> </canvas>
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<script>
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description("This test checks vertexAttribPointer behaviors in WebGL.");
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debug("");
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debug("Canvas.getContext");
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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 = create3DContext(document.getElementById("canvas"));
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if (!gl) {
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testFailed("context does not exist");
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} else {
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testPassed("context exists");
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debug("");
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debug("Checking gl.vertexAttribPointer.");
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if (!gl.FIXED) {
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gl.FIXED = 0x140C;
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}
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gl.vertexAttribPointer(0, 3, gl.FLOAT, 0, 0, 12);
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glErrorShouldBe(gl, gl.INVALID_OPERATION,
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"vertexAttribPointer should fail if no buffer is bound");
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var vertexObject = gl.createBuffer();
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gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
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gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(0), gl.STATIC_DRAW);
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gl.vertexAttribPointer(0, 1, gl.INT, 0, 0, 0);
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glErrorShouldBe(gl, gl.INVALID_ENUM,
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"vertexAttribPointer should not support INT");
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gl.vertexAttribPointer(0, 1, gl.UNSIGNED_INT, 0, 0, 0);
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glErrorShouldBe(gl, gl.INVALID_ENUM,
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"vertexAttribPointer should not support UNSIGNED_INT");
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gl.vertexAttribPointer(0, 1, gl.FIXED, 0, 0, 0);
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glErrorShouldBe(gl, gl.INVALID_ENUM,
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"vertexAttribPointer should not support FIXED");
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function checkVertexAttribPointer(
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gl, err, reason, size, type, normalize, stride, offset) {
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gl.vertexAttribPointer(0, size, type, normalize, stride, offset);
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glErrorShouldBe(gl, err,
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"gl.vertexAttribPointer(0, " + size +
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", gl." + wtu.glEnumToString(gl, type) +
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", " + normalize +
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", " + stride +
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", " + offset +
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") should " + (err == gl.NO_ERROR ? "succeed " : "fail ") + reason);
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}
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var types = [
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{ type:gl.BYTE, bytesPerComponent: 1 },
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{ type:gl.UNSIGNED_BYTE, bytesPerComponent: 1 },
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{ type:gl.SHORT, bytesPerComponent: 2 },
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{ type:gl.UNSIGNED_SHORT, bytesPerComponent: 2 },
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{ type:gl.FLOAT, bytesPerComponent: 4 },
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];
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for (var ii = 0; ii < types.length; ++ii) {
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var info = types[ii];
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debug("");
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for (var size = 1; size <= 4; ++size) {
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debug("");
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debug("checking: " + wtu.glEnumToString(gl, info.type) + " with size " + size);
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var bytesPerElement = size * info.bytesPerComponent;
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var offsetSet;
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if (info.bytesPerComponent > 1)
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offsetSet = [0, info.bytesPerComponent - 1];
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else
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offsetSet = [0];
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for (var jj = 0; jj < offsetSet.length; ++jj) {
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var offset = offsetSet[jj];
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var strideSet;
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if (bytesPerElement > 1)
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strideSet = [0, bytesPerElement - 1, bytesPerElement];
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else
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strideSet = [0, bytesPerElement];
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for (var kk = 0; kk < strideSet.length; ++kk) {
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var stride = strideSet[kk];
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var err = gl.NO_ERROR;
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var reason = ""
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if (offset != 0) {
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reason = "because offset is bad";
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err = gl.INVALID_OPERATION;
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}
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if (stride % info.bytesPerComponent != 0) {
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reason = "because stride is bad";
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err = gl.INVALID_OPERATION;
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}
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checkVertexAttribPointer(
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gl, err, reason, size, info.type, false, stride, offset);
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}
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var stride = Math.floor(255 / info.bytesPerComponent) * info.bytesPerComponent;
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if (offset == 0) {
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checkVertexAttribPointer(
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gl, gl.NO_ERROR, "at stride limit",
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size, info.type, false, stride, offset);
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checkVertexAttribPointer(
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gl, gl.INVALID_VALUE, "over stride limit",
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size, info.type, false,
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stride + info.bytesPerComponent, offset);
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}
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}
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}
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}
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}
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debug("");
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</script>
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</body>
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</html>
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