| <!-- |
| Copyright (c) 2019 The Khronos Group Inc. |
| Use of this source code is governed by an MIT-style license that can be |
| found in the LICENSE.txt file. |
| --> |
| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL vertexAttribPointer Conformance Tests</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../js/js-test-pre.js"></script> |
| <script src="../../js/webgl-test-utils.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <canvas id="canvas" width="2" height="2"> </canvas> |
| <script> |
| "use strict"; |
| description("This test checks vertexAttribPointer behaviors in WebGL."); |
| |
| debug(""); |
| debug("Canvas.getContext"); |
| |
| var wtu = WebGLTestUtils; |
| var gl = wtu.create3DContext("canvas"); |
| if (!gl) { |
| testFailed("context does not exist"); |
| } else { |
| testPassed("context exists"); |
| |
| debug(""); |
| debug("Checking gl.vertexAttribPointer."); |
| |
| if (!gl.FIXED) { |
| gl.FIXED = 0x140C; |
| } |
| |
| var vertexObject = gl.createBuffer(); |
| gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(0), gl.STATIC_DRAW); |
| |
| |
| gl.bindBuffer(gl.ARRAY_BUFFER, null); |
| gl.vertexAttribPointer(0, 1, gl.FLOAT, false, 0, 4); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, |
| "vertexAttribPointer should fail if no buffer is bound and `offset` is non-zero."); |
| |
| gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| gl.vertexAttribPointer(0, 1, gl.FLOAT, false, 0, 0); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR); |
| |
| gl.bindBuffer(gl.ARRAY_BUFFER, null); |
| gl.vertexAttribPointer(0, 1, gl.FLOAT, false, 0, 0); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, |
| "vertexAttribPointer should succeed if no buffer is bound and `offset` is zero."); |
| |
| gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| |
| |
| if (wtu.getDefault3DContextVersion() < 2) { |
| gl.vertexAttribPointer(0, 1, gl.INT, 0, 0, 0); |
| wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, |
| "vertexAttribPointer should not support INT"); |
| gl.vertexAttribPointer(0, 1, gl.UNSIGNED_INT, 0, 0, 0); |
| wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, |
| "vertexAttribPointer should not support UNSIGNED_INT"); |
| } |
| gl.vertexAttribPointer(0, 1, gl.FIXED, 0, 0, 0); |
| wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, |
| "vertexAttribPointer should not support FIXED"); |
| |
| var checkVertexAttribPointer = function( |
| gl, err, reason, size, type, normalize, stride, offset) { |
| gl.vertexAttribPointer(0, size, type, normalize, stride, offset); |
| var succeeded = (err == gl.NO_ERROR); |
| wtu.glErrorShouldBe(gl, err, |
| "gl.vertexAttribPointer(0, " + size + |
| ", gl." + wtu.glEnumToString(gl, type) + |
| ", " + normalize + |
| ", " + stride + |
| ", " + offset + |
| ") should " + (succeeded ? "succeed " : "fail ") + reason); |
| if (succeeded) { |
| shouldBe('gl.getVertexAttrib(0, gl.VERTEX_ATTRIB_ARRAY_SIZE)', size.toString()); |
| shouldBe('gl.getVertexAttrib(0, gl.VERTEX_ATTRIB_ARRAY_TYPE)', 'gl.' + wtu.glEnumToString(gl, type)); |
| shouldBe('gl.getVertexAttrib(0, gl.VERTEX_ATTRIB_ARRAY_NORMALIZED)', normalize.toString()); |
| shouldBe('gl.getVertexAttrib(0, gl.VERTEX_ATTRIB_ARRAY_STRIDE)', stride.toString()); |
| shouldBe('gl.getVertexAttribOffset(0, gl.VERTEX_ATTRIB_ARRAY_POINTER)', offset.toString()); |
| } |
| } |
| |
| var types = [ |
| { type:gl.BYTE, bytesPerComponent: 1 }, |
| { type:gl.UNSIGNED_BYTE, bytesPerComponent: 1 }, |
| { type:gl.SHORT, bytesPerComponent: 2 }, |
| { type:gl.UNSIGNED_SHORT, bytesPerComponent: 2 }, |
| { type:gl.FLOAT, bytesPerComponent: 4 }, |
| ]; |
| |
| if (wtu.getDefault3DContextVersion() >= 2) { |
| types.push(...[ |
| { type:gl.INT, bytesPerComponent: 4 }, |
| { type:gl.UNSIGNED_INT, bytesPerComponent: 4 }, |
| { type:gl.HALF_FLOAT, bytesPerComponent: 2 }, |
| { type:gl.INT_2_10_10_10_REV, bytesPerComponent: 4, minSize: 4 }, |
| { type:gl.UNSIGNED_INT_2_10_10_10_REV, bytesPerComponent: 4, minSize: 4 }, |
| ]); |
| } |
| |
| for (var ii = 0; ii < types.length; ++ii) { |
| var info = types[ii]; |
| debug(""); |
| for (var size = 1; size <= 4; ++size) { |
| debug(""); |
| debug("checking: " + wtu.glEnumToString(gl, info.type) + " with size " + size); |
| var bytesPerElement = size * info.bytesPerComponent; |
| var offsetSet = [ |
| 0, |
| 1, |
| info.bytesPerComponent - 1, |
| info.bytesPerComponent, |
| info.bytesPerComponent + 1, |
| info.bytesPerComponent * 2]; |
| for (var jj = 0; jj < offsetSet.length; ++jj) { |
| var offset = offsetSet[jj]; |
| for (var kk = 0; kk < offsetSet.length; ++kk) { |
| var stride = offsetSet[kk]; |
| var err = gl.NO_ERROR; |
| var reason = "" |
| if (offset % info.bytesPerComponent != 0) { |
| reason = "because offset is bad"; |
| err = gl.INVALID_OPERATION; |
| } |
| if (stride % info.bytesPerComponent != 0) { |
| reason = "because stride is bad"; |
| err = gl.INVALID_OPERATION; |
| } |
| if (size < info.minSize) { |
| reason = "because size < minSize"; |
| err = gl.INVALID_OPERATION; |
| } |
| checkVertexAttribPointer( |
| gl, err, reason, size, info.type, false, stride, offset); |
| } |
| var stride = Math.floor(255 / info.bytesPerComponent) * info.bytesPerComponent; |
| |
| if (offset == 0) { |
| checkVertexAttribPointer( |
| gl, size < info.minSize ? gl.INVALID_OPERATION : gl.NO_ERROR, "at stride limit", |
| size, info.type, false, stride, offset); |
| checkVertexAttribPointer( |
| gl, size < info.minSize ? [gl.INVALID_OPERATION, gl.INVALID_VALUE] : gl.INVALID_VALUE, "over stride limit", |
| size, info.type, false, |
| stride + info.bytesPerComponent, offset); |
| } |
| } |
| } |
| } |
| } |
| |
| debug(""); |
| var successfullyParsed = true; |
| |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| |
| </body> |
| </html> |
