vertexAttribPointerBadArgs.html

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Copyright (c) 2019 The Khronos Group Inc.

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Tests.startUnit = function () {

  var canvas = document.createElement('canvas');

  var gl = wrapGLContext(getGLContext(canvas));

  return [gl];

Tests.setup = function(gl) {

  assert(0 == gl.getError());

  return [gl];

Tests.teardown = function(gl) {

Tests.endUnit = function(gl) {

Tests.testVertexAttribPointerVBO = function(gl) {

  var vbo = gl.createBuffer();

  gl.bindBuffer(gl.ARRAY_BUFFER, vbo);

  gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(4), gl.STATIC_DRAW);

  gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);

  assertFail("negative offset",

      function(){gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, -4);});

  assertOk("out of range offset (OK because we can change the buffer later)",

      function(){gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 1200);});

  assertFail("Offset that is incompatible with type",

      function(){gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 3);});

  assertFail("negative stride",

      function(){gl.vertexAttribPointer(0, 3, gl.FLOAT, false, -1, 0);});

  assertFail("bad size",

      function(){gl.vertexAttribPointer(0, 5, gl.FLOAT, false, 0, 0);});

  assertFail("stride that doesn't match type",

      function(){gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 1, 0);});

  assertFail("bad type",

      function(){gl.vertexAttribPointer(0, 3, gl.TEXTURE_2D, false, 0, 0);});

  assertFail("bad index",

      function(){gl.vertexAttribPointer(-1, 3, gl.FLOAT, false, 0, 0);});

  assertFail("bad index (big negative)",

      function(){gl.vertexAttribPointer(-8693948, 3, gl.FLOAT, false, 0, 0);});

  assertFail("bad index (big positive)",

      function(){gl.vertexAttribPointer(8693948, 3, gl.FLOAT, false, 0, 0);});

  gl.bindBuffer(gl.ARRAY_BUFFER, null);

  assertOk("binding to null buffer with offset=0",

      function(){gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);});

  assertFail("binding to null buffer with offset!=0",

      function(){gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 16);});

  gl.bindBuffer(gl.ARRAY_BUFFER, vbo);

  gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);

  gl.bindBuffer(gl.ARRAY_BUFFER, null);

  gl.deleteBuffer(vbo);

  throwError(gl);

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