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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">
<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>
<canvas id="canvas" width="32" height="32" style="width: 32px; height: 32px;"></canvas>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
var wtu = WebGLTestUtils;
description(' Test multisample with sample number from 1 to max sample number which also includes the samples that may not be in the supported sample list');
var gl = wtu.create3DContext("canvas", null, 2);
var size = 32;
var program;
if (!gl) {
testFailed('canvas.getContext() failed');
} else {
program = wtu.setupColorQuad(gl);
gl.viewport(0, 0, size, size);
var supportedSampleCountArray = gl.getInternalformatParameter(gl.RENDERBUFFER, gl.RGBA8, gl.SAMPLES);
var iterationCount = supportedSampleCountArray[0] + 1;
for (var i = 1; i < iterationCount; i++)
{
runTest(gl, i, false);
runTest(gl, i, true);
}
}
function runTest(gl, sampleCount, isInverted) {
// Setup multi-sample RBO
var msColorRbo = gl.createRenderbuffer();
gl.bindRenderbuffer(gl.RENDERBUFFER, msColorRbo);
gl.renderbufferStorageMultisample(gl.RENDERBUFFER, sampleCount, gl.RGBA8, size, size);
// Setup multi-sample FBO.
var msFbo = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, msFbo);
gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, msColorRbo);
// Setup resolve color RBO.
var resolveColorRbo = gl.createRenderbuffer();
gl.bindRenderbuffer(gl.RENDERBUFFER, resolveColorRbo);
gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA8, size, size);
// Setup resolve FBO
var resolveFbo = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, resolveFbo);
gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, resolveColorRbo);
gl.bindFramebuffer(gl.FRAMEBUFFER, msFbo);
if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) {
testFailed("Framebuffer incomplete.");
return;
}
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.enable(gl.SAMPLE_COVERAGE);
var coverageValue = isInverted ? 0.0 : 1.0;
gl.sampleCoverage(coverageValue, isInverted);
var quadColor = [1.0, 0.0, 0.0, 1.0];
gl.useProgram(program);
wtu.drawFloatColorQuad(gl, quadColor);
gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, resolveFbo);
gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.COLOR_BUFFER_BIT, gl.NEAREST);
gl.bindFramebuffer(gl.FRAMEBUFFER, resolveFbo);
wtu.checkCanvasRect(gl, 0, 0, size, size, [255, 0, 0, 255],
"User buffer has been rendered to red with sample = "
+ sampleCount + ", coverageValue = " + coverageValue
+ " and isInverted = " + isInverted, 3);
gl.disable(gl.SAMPLE_COVERAGE);
gl.deleteRenderbuffer(msColorRbo);
gl.deleteRenderbuffer(resolveColorRbo);
gl.deleteFramebuffer(msFbo);
gl.deleteFramebuffer(resolveFbo);
}
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
|
