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Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/conformance2/rendering/framebuffer-texture-changing-base-level.html')
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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/rendering/framebuffer-texture-changing-base-level.html b/dom/canvas/test/webgl-conf/checkout/conformance2/rendering/framebuffer-texture-changing-base-level.html new file mode 100644 index 0000000000..de462d6015 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance2/rendering/framebuffer-texture-changing-base-level.html @@ -0,0 +1,107 @@ +<!-- +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 framebuffer using a non-square texture with a changing base level</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> +<canvas id="canvas" width="16" height="16"> </canvas> +<div id="description"></div> +<div id="console"></div> +<script> +"use strict"; + +// http://anglebug.com/2291 + +var wtu = WebGLTestUtils; +var gl; + +function testNonSquareFramebufferTextureWithChangingBaseLevel() { + var program = wtu.setupSimpleTextureProgram(gl); + wtu.setupUnitQuad(gl); + + var width = 8; + var height = 4; + + debug(""); + debug("Text texture width " + width + " x height " + height); + + var texture = gl.createTexture(); + gl.bindTexture(gl.TEXTURE_2D, texture); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); + + // Create all mipmap levels for the texture from level 0 to the 1x1 pixel level. + var level = 0; + var levelW = width; + var levelH = height; + gl.texImage2D(gl.TEXTURE_2D, level, gl.RGBA, levelW, levelH, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); + while (levelW > 1 || levelH > 1) + { + ++level; + levelW = Math.max(1, Math.floor(width / Math.pow(2, level))); + levelH = Math.max(1, Math.floor(height / Math.pow(2, level))); + gl.texImage2D(gl.TEXTURE_2D, level, gl.RGBA, levelW, levelH, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); + } + + // Clear each level of the texture using an FBO. Change the base level to match the level used for the FBO on each iteration. + var fbo = gl.createFramebuffer(); + gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); + level = 0; + levelW = width; + levelH = height; + while (levelW > 1 || levelH > 1) + { + var levelW = Math.floor(width / Math.pow(2, level)); + var levelH = Math.floor(height / Math.pow(2, level)); + + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, level); + gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, level); + shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE"); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Setup framebuffer with texture should succeed."); + gl.clearColor(0, 1, 0, 1); + gl.clear(gl.COLOR_BUFFER_BIT); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Clearing the texture level " + level + " to green should succeed."); + wtu.checkCanvasRect(gl, 0, 0, 1, 1, [0, 255, 0, 255], "should be green"); + ++level; + } + + debug(""); + + gl.bindFramebuffer(gl.FRAMEBUFFER, null); + gl.viewport(0, 0, gl.canvas.width, gl.canvas.height); + gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, 0); + wtu.clearAndDrawUnitQuad(gl, [0, 0, 0, 255]); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Drawing the texture to default framebuffer with base level 0 should succeed."); + wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green"); + + gl.deleteTexture(texture); + gl.deleteFramebuffer(fbo); +} + +description(); + +var canvas = document.getElementById("canvas"); +shouldBeNonNull("gl = wtu.create3DContext(canvas, undefined, 2)"); + +testNonSquareFramebufferTextureWithChangingBaseLevel(); + +debug(""); +var successfullyParsed = true; + +</script> +<script src="../../js/js-test-post.js"></script> + +</body> +</html> |