| <!-- |
| 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> |