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<!--
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 WEBGL_draw_buffers FRAMEBUFFER_UNSUPPORTED Test</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";
var wtu = WebGLTestUtils;
var gl;
var canvas = document.getElementById("canvas");
var fb1 = null;
var fb2 = null;
function checkFramebuffer(expected) {
var actual = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
if (expected.indexOf(actual) < 0) {
var msg = "checkFramebufferStatus expects [";
for (var index = 0; index < expected.length; ++index) {
msg += wtu.glEnumToString(gl, expected[index]);
if (index + 1 < expected.length)
msg += ", ";
}
msg += "], was " + wtu.glEnumToString(gl, actual);
testFailed(msg);
} else {
var msg = "checkFramebufferStatus got " + wtu.glEnumToString(gl, actual) +
" as expected";
testPassed(msg);
}
}
function testImageAttachedTwoPoints() {
debug("");
debug("Checking an image is attached to more than one color attachment in a framebuffer.");
var tex1 = gl.createTexture();
var tex2 = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex1);
gl.texImage2D(gl.TEXTURE_2D,
0, // level
gl.RGBA, // internalFormat
1, // width
1, // height
0, // border
gl.RGBA, // format
gl.UNSIGNED_BYTE, // type
new Uint8Array(4)); // data
gl.bindTexture(gl.TEXTURE_2D, tex2);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4));
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Texture creation should succeed.");
gl.bindFramebuffer(gl.FRAMEBUFFER, fb1);
gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT0_WEBGL, gl.TEXTURE_2D, tex1, 0);
checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT1_WEBGL, gl.TEXTURE_2D, tex2, 0);
checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT2_WEBGL, gl.TEXTURE_2D, tex1, 0);
checkFramebuffer([gl.FRAMEBUFFER_UNSUPPORTED]);
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
gl.bindFramebuffer(gl.FRAMEBUFFER, fb2);
var texCube = gl.createTexture();
gl.bindTexture(gl.TEXTURE_CUBE_MAP, texCube);
for (var target = gl.TEXTURE_CUBE_MAP_POSITIVE_X; target < gl.TEXTURE_CUBE_MAP_POSITIVE_X + 6; target++) {
gl.texImage2D(target, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4));
}
gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT0_WEBGL, gl.TEXTURE_CUBE_MAP_POSITIVE_X, texCube, 0);
checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT1_WEBGL, gl.TEXTURE_CUBE_MAP_POSITIVE_Y, texCube, 0);
checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
gl.framebufferTexture2D(gl.FRAMEBUFFER, ext.COLOR_ATTACHMENT2_WEBGL, gl.TEXTURE_CUBE_MAP_POSITIVE_X, texCube, 0);
checkFramebuffer([gl.FRAMEBUFFER_UNSUPPORTED]);
// Clean up
gl.deleteTexture(tex1);
gl.deleteTexture(tex2);
gl.deleteTexture(texCube);
}
description("This tests FRAMEBUFFER_UNSUPPORTED.");
shouldBeNonNull("gl = wtu.create3DContext(undefined, undefined, 1)");
fb1 = gl.createFramebuffer();
fb2 = gl.createFramebuffer();
var ext = gl.getExtension("WEBGL_draw_buffers");
if (!ext) {
testPassed("No WEBGL_draw_buffers support -- this is legal");
} else {
var bufs = [ext.COLOR_ATTACHMENT0_WEBGL, ext.COLOR_ATTACHMENT1_WEBGL, ext.COLOR_ATTACHMENT2_WEBGL];
gl.bindFramebuffer(gl.FRAMEBUFFER, fb1);
ext.drawBuffersWEBGL(bufs);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be able to call drawBuffersWEBGL successfully");
gl.bindFramebuffer(gl.FRAMEBUFFER, fb2);
ext.drawBuffersWEBGL(bufs);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be able to call drawBuffersWEBGL successfully");
testPassed("Successfully enabled WEBGL_draw_buffers extension");
testImageAttachedTwoPoints();
gl.deleteFramebuffer(fb1);
gl.deleteFramebuffer(fb2);
}
debug("");
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
|
