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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.
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<head>
<meta charset="utf-8">
<title>Test clearBuffer functions with optional srcOffset argument</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>
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<body>
<div id="description"></div>
<div id="console"></div>
<canvas id="canvas" width="20" height="20"> </canvas>
<script>
"use strict";
description("This tests clearBuffer* functions with optional srcOffset argument");
function verifyOnePixel(readFormat, readType, arrayType, expectedColor) {
var buffer = new arrayType(4);
gl.readPixels(0, 0, 1, 1, readFormat, readType, buffer);
if (buffer[0] == expectedColor[0] &&
buffer[1] == expectedColor[1] &&
buffer[2] == expectedColor[2] &&
buffer[3] == expectedColor[3]) {
testPassed("clearBuffer sets the renderbuffer with the correct data");
} else {
testFailed("clearBuffer fails to work. Expected: " + expectedColor + ", got: " + buffer);
}
}
function testClearBuffer(func, format, arrayType, readFormat, readType) {
debug("");
debug("Testing " + func);
var fb = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
var renderbuffer = gl.createRenderbuffer();
gl.bindRenderbuffer(gl.RENDERBUFFER, renderbuffer);
gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, renderbuffer);
gl.renderbufferStorage(gl.RENDERBUFFER, format, canvas.width, canvas.height);
shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
var srcData = new arrayType([1, 2, 3, 4, 5, 6]);
gl[func](gl.COLOR, 0, srcData);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearBuffer with no srcOffset should succeed");
verifyOnePixel(readFormat, readType, arrayType, [1,2,3,4]);
gl[func](gl.COLOR, 0, srcData, 0);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearBuffer with srcOffset = 0 should succeed");
verifyOnePixel(readFormat, readType, arrayType, [1,2,3,4]);
gl[func](gl.COLOR, 0, srcData, 2);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearBuffer with srcOffset = 2 should succeed");
verifyOnePixel(readFormat, readType, arrayType, [3,4, 5, 6]);
gl[func](gl.COLOR, 0, srcData, 4);
wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "clearBuffer with srcOffset = 4 should fail: out of bounds");
gl.deleteFramebuffer(fb);
gl.deleteRenderbuffer(renderbuffer);
}
var wtu = WebGLTestUtils;
var canvas = document.getElementById("canvas");
var gl = wtu.create3DContext(canvas, undefined, 2);
if (!gl) {
testFailed("context does not exist");
} else {
testPassed("context exists");
var testCases = [
{
func: "clearBufferiv", format: gl.RGBA32I, arrayType: Int32Array,
readFormat: gl.RGBA_INTEGER, readType: gl.INT,
},
{
func: "clearBufferuiv", format: gl.RGBA32UI, arrayType: Uint32Array,
readFormat: gl.RGBA_INTEGER, readType: gl.UNSIGNED_INT,
},
{
func: "clearBufferfv", format: gl.RGBA32F, arrayType: Float32Array,
readFormat: gl.RGBA, readType: gl.FLOAT,
extension: "EXT_color_buffer_float",
},
];
for (var tt = 0; tt < testCases.length; ++tt) {
var test = testCases[tt];
if (test.extension && !gl.getExtension(test.extension))
continue;
testClearBuffer(test.func, test.format, test.arrayType, test.readFormat, test.readType);
}
}
debug("");
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no error");
var successfullyParsed = true;
</script>
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