test_draw_fakevert_large_offset.html

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<head>

<meta charset=utf-8>

<script src='/tests/SimpleTest/SimpleTest.js'></script>

</head>

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<pre id=e_out></pre>

<script>

ok = window.ok || function(e, s) {

  e_out.textContent += `\n${!e ? 'FAIL' : 'pass'}: ${s}`;

};

// -

// Bug 1778144

const canvas = document.createElement("canvas")

const gl = canvas.getContext("webgl")

program = gl.createProgram()

vertex = gl.createShader(gl.VERTEX_SHADER)

gl.shaderSource(vertex, `\

  precision highp float;

  attribute vec4 a_vec4;

  uniform bool u_bool;

  uniform bvec2 u_bvec2;

  uniform bvec3 u_bvec3;

  uniform bvec4 u_bvec4;

  varying vec2 v_vec2;

  void main() {

    gl_Position.x += float(a_vec4.x);

    if (u_bool || u_bvec2.x || u_bvec3.x || u_bvec4.x) {

`)

gl.compileShader(vertex)

gl.attachShader(program, vertex)

fragment = gl.createShader(gl.FRAGMENT_SHADER)

gl.shaderSource(fragment, `\

  precision highp float;

  varying vec2 v_vec2;

  uniform sampler2D u_sampler2d;

  void main() {

    gl_FragColor = texture2D(u_sampler2d, v_vec2);

`)

gl.compileShader(fragment)

gl.attachShader(program, fragment)

gl.linkProgram(program)

gl.useProgram(program)

const begin = performance.now();

gl.drawArrays(gl.POINTS, 1659036386, 1)

let err = gl.getError();

ok(err == gl.OUT_OF_MEMORY || !err, `err: ${err}`);

const elapsed_ms = performance.now() - begin;

ok(elapsed_ms < 1000, `elapsed_ms:${elapsed_ms} < 1000`);

// -

// Let's be kind and kill this now-gpu-memory-heavy context.

gl.getExtension('WEBGL_lose_context').loseContext();

err = gl.getError();

ok(err == gl.CONTEXT_LOST_WEBGL, `err:${err} == gl.CONTEXT_LOST_WEBGL`);

// -

ok(true, 'done');

</script>

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