| <!-- |
| 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 OVR_multiview2 Conformance Tests</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> |
| <script src="../../js/tests/ovr_multiview2_util.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| |
| let wtu = WebGLTestUtils; |
| let gl = wtu.create3DContext(null, null, 2); |
| let ext = null; |
| let queryExt = null; |
| |
| function runTransformFeedbackTest() |
| { |
| debug(""); |
| debug("Testing transform feedback combined with multiview rendering"); |
| |
| let width = 64; |
| let height = 64; |
| |
| let views = gl.getParameter(ext.MAX_VIEWS_OVR); |
| |
| let multiviewShaders = [ |
| getMultiviewVaryingVertexShader(views), |
| getMultiviewVaryingFragmentShader() |
| ]; |
| let testProgram = wtu.setupTransformFeedbackProgram(gl, multiviewShaders, ['testVarying'], gl.SEPARATE_ATTRIBS, ['a_position'], [0], true); |
| if (!testProgram) { |
| testFailed("Compilation with extension enabled failed."); |
| return; |
| } |
| |
| let fb = gl.createFramebuffer(); |
| gl.bindFramebuffer(gl.FRAMEBUFFER, fb); |
| let colorTex = createTextureWithNearestFiltering(gl.TEXTURE_2D_ARRAY); |
| gl.texStorage3D(gl.TEXTURE_2D_ARRAY, 1, gl.RGBA8, width, height, views); |
| ext.framebufferTextureMultiviewOVR(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, colorTex, 0, 0, views); |
| |
| let xfb = gl.createTransformFeedback(); |
| gl.bindTransformFeedback(gl.TRANSFORM_FEEDBACK, xfb); |
| |
| let xfbBuffer = gl.createBuffer(); |
| gl.bindBufferBase(gl.TRANSFORM_FEEDBACK_BUFFER, 0, xfbBuffer); |
| gl.bufferData(gl.TRANSFORM_FEEDBACK_BUFFER, 128, gl.DYNAMIC_DRAW); |
| |
| gl.viewport(0, 0, width, height); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors from setup"); |
| |
| gl.beginTransformFeedback(gl.TRIANGLES); |
| wtu.drawUnitQuad(gl); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "rendering to a multiview framebuffer with more than one view when there's an active transform feedback should result in invalid operation"); |
| |
| gl.pauseTransformFeedback(); |
| wtu.drawUnitQuad(gl); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors from draw when rendering to a multiview framebuffer with more than one view when there's an active paused transform feedback"); |
| |
| let readFb = gl.createFramebuffer(); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, readFb); |
| for (let viewIndex = 0; viewIndex < views; ++viewIndex) { |
| gl.framebufferTextureLayer(gl.READ_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, colorTex, 0, viewIndex); |
| let expectedColor = getExpectedColor(viewIndex); |
| wtu.checkCanvasRect(gl, 0, 0, width, height, expectedColor, 'view ' + viewIndex + ' should be colored ' + expectedColor); |
| } |
| |
| gl.bindTransformFeedback(gl.TRANSFORM_FEEDBACK, null); |
| |
| wtu.drawUnitQuad(gl); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors from draw when transform feedback is unbound"); |
| |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, readFb); |
| for (let viewIndex = 0; viewIndex < views; ++viewIndex) { |
| gl.framebufferTextureLayer(gl.READ_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, colorTex, 0, viewIndex); |
| let expectedColor = getExpectedColor(viewIndex); |
| wtu.checkCanvasRect(gl, 0, 0, width, height, expectedColor, 'view ' + viewIndex + ' should be colored ' + expectedColor); |
| } |
| |
| gl.bindTransformFeedback(gl.TRANSFORM_FEEDBACK, xfb); |
| gl.endTransformFeedback(); |
| gl.bindTransformFeedback(gl.TRANSFORM_FEEDBACK, null); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors from ending transform feedback"); |
| } |
| |
| description("This test verifies interaction between transform feedback and the OVR_multiview2 extension, if it is available."); |
| |
| debug(""); |
| |
| if (!gl) { |
| testFailed("WebGL context does not exist"); |
| } else { |
| testPassed("WebGL context exists"); |
| |
| if (!gl.getExtension("OVR_multiview2")) { |
| testPassed("No OVR_multiview2 support -- this is legal"); |
| } else { |
| testPassed("Successfully enabled OVR_multiview2 extension"); |
| ext = gl.getExtension('OVR_multiview2'); |
| |
| wtu.setupUnitQuad(gl, 0, 1); |
| |
| runTransformFeedbackTest(); |
| } |
| } |
| |
| debug(""); |
| var successfullyParsed = true; |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| |
| </body> |
| </html> |
