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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/reading/read-pixels-into-pixel-pack-buffer.html b/dom/canvas/test/webgl-conf/checkout/conformance2/reading/read-pixels-into-pixel-pack-buffer.html new file mode 100644 index 0000000000..7d646a6ecd --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance2/reading/read-pixels-into-pixel-pack-buffer.html @@ -0,0 +1,152 @@ +<!-- +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 2 Conformance Test: ReadPixels Into Pixel Pack Buffer.</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="example" width="4" height="4"></canvas> +<div id="description"></div> +<div id="console"></div> +<script> +"use strict"; + +function checkFormatAndType() +{ + debug(""); + debug("check format / type"); + var invalidFormat = [gl.DEPTH_COMPONENT, gl.DEPTH_STENCIL, gl.R8, gl.RGBA4, gl.LUMINANCE, gl.LUMINANCE_ALPHA]; + var invalidType = [gl.UNSIGNED_INT_24_8]; + for (var ff = 0; ff < invalidFormat.length; ++ff) { + var format = invalidFormat[ff]; + gl.readPixels(0, 0, 1, 1, format, gl.UNSIGNED_BYTE, 0); + wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "Format should not be able to read as " + wtu.glEnumToString(gl, format)); + } + for (var tt = 0; tt < invalidType.length; ++tt) { + var type = invalidType[tt]; + gl.readPixels(0, 0, 1, 1, gl.RGBA, type, 0); + wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "Type should not be able to read as " + wtu.glEnumToString(gl, type)); + } + + debug(""); + debug("check combinations of format and type"); + var combinations = [ + {format: gl.RGBA, type: gl.UNSIGNED_BYTE}, + {format: gl.RGB, type: gl.UNSIGNED_BYTE}, + {format: gl.RGB, type: gl.UNSIGNED_SHORT_5_6_5}, + {format: gl.RGBA, type: gl.UNSIGNED_SHORT_5_5_5_1}, + {format: gl.RGBA, type: gl.UNSIGNED_SHORT_4_4_4_4}, + {format: gl.ALPHA, type: gl.UNSIGNED_BYTE}, + {format: gl.RED, type: gl.UNSIGNED_BYTE}, + {format: gl.RGBA_INTEGER, type: gl.UNSIGNED_INT}, + {format: gl.RGBA_INTEGER, type: gl.INT} + ]; + + var implFormat = gl.getParameter(gl.IMPLEMENTATION_COLOR_READ_FORMAT); + var implType = gl.getParameter(gl.IMPLEMENTATION_COLOR_READ_TYPE); + for (var tt = 0; tt < combinations.length; ++ tt) { + var info = combinations[tt]; + var format = info.format; + var type = info.type; + gl.readPixels(0, 0, 1, 1, format, type, 0); + // Only two format/type parameter pairs are accepted. GL_RGBA/GL_UNSIGNED_BYTE is always + // accepted on default readbuffer. The other acceptable pair can be discovered by querying + // GL_IMPLEMENTATION_COLOR_READ_FORMAT and GL_IMPLEMENTATION_COLOR_READ_TYPE. + if ((format == gl.RGBA && type == gl.UNSIGNED_BYTE) || (format == implFormat && type == implType)) { + wtu.glErrorShouldBe(gl, gl.NO_ERROR, "The combination of format/type should be able to read as " + + wtu.glEnumToString(gl, format) + " / " + wtu.glEnumToString(gl, type)); + } else { + wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "The combination of format/type should not be able to read as " + + wtu.glEnumToString(gl, format) + " / " + wtu.glEnumToString(gl, type)); + } + } +} + +function validatePixelPackBufferAndParameters(canvasWidth, canvasHeight) +{ + debug(""); + debug("Validate PIXEL_PACK buffer and readPixels' parameters"); + gl.clearColor(0, 0, 0, 1); + gl.clear(gl.COLOR_BUFFER_BIT); + gl.pixelStorei(gl.PACK_ALIGNMENT, 1); + + var size = canvasWidth * canvasHeight * 4; + var buffer = gl.createBuffer(); + gl.bindBuffer(gl.PIXEL_PACK_BUFFER, buffer); + gl.bufferData(gl.PIXEL_PACK_BUFFER, size, gl.STATIC_DRAW); + var array = new Uint8Array(size); + + debug(""); + debug("PIXEL_PACK buffer is bound"); + gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, array); + wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "should generate INVALID_OPERATION if pixel pack buffer is bound"); + gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, 0); + wtu.glErrorShouldBe(gl, gl.NO_ERROR); + + debug(""); + debug("Validate the offset of PIXEL_PACK buffer and buffer size"); + gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, -1); + wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "offset < 0"); + gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, size); + wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "offset > buffer size"); + gl.readPixels(0, 0, canvasWidth + 1, canvasHeight, gl.RGBA, gl.UNSIGNED_BYTE, 0); + wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "pixel pack buffer is not large enough"); + + debug(""); + debug("Validate the reading area of framebuffer"); + gl.readPixels(-1, -2, canvasWidth, canvasHeight, gl.RGBA, gl.UNSIGNED_BYTE, 0); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, "reading pixels outside of the framebuffer should succeed."); + gl.readPixels(2, 1, canvasWidth, canvasHeight, gl.RGBA, gl.UNSIGNED_BYTE, 0); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, "reading pixels outside of the framebuffer should succeed."); + gl.readPixels(2, 1, -1, -1, gl.RGBA, gl.UNSIGNED_BYTE, 0); + wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, + "reading pixels with negative width / height should generate INVALID_VALUE."); + + checkFormatAndType(); + + debug(""); + debug("no PIXEL_PACK buffer bound"); + gl.bindBuffer(gl.PIXEL_PACK_BUFFER, null); + gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, array); + wtu.glErrorShouldBe(gl, gl.NO_ERROR); + gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, 0); + wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "no pixel pack buffer bound"); + + gl.deleteBuffer(buffer); +} + +debug(""); +debug("Canvas.getContext"); + +var wtu = WebGLTestUtils; +var pixel = [0, 0, 0, 0]; +var expectedColor = [255, 102, 0, 255]; + +var canvas = document.getElementById("example"); +var gl = wtu.create3DContext(canvas, undefined, 2); + +if (!gl) { + testFailed("context does not exist"); +} else { + testPassed("context exists"); + + debug(""); + description('ReadPixels into PIXEL_PACK buffer'); + validatePixelPackBufferAndParameters(4, 4); +} + +debug(""); +var successfullyParsed = true; +</script> +<script src="../../js/js-test-post.js"></script> +</body> +</html> |