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Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/conformance2/renderbuffers/multisampled-renderbuffer-initialization.html')
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1 files changed, 149 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/renderbuffers/multisampled-renderbuffer-initialization.html b/dom/canvas/test/webgl-conf/checkout/conformance2/renderbuffers/multisampled-renderbuffer-initialization.html new file mode 100644 index 0000000000..0b27da661d --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance2/renderbuffers/multisampled-renderbuffer-initialization.html @@ -0,0 +1,149 @@ +<!-- +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="testbed" width="40" height="40" style="width: 40px; height: 40px;"></canvas> +<div id="description"></div> +<div id="console"></div> +<script> +"use strict"; +var wtu = WebGLTestUtils; +description('Verify multisampled renderbuffers are initialized to 0 before being read in WebGL'); + +var gl = wtu.create3DContext("testbed", null, 2); + +if (!gl) { + testFailed('canvas.getContext() failed'); +} else { + // Set the clear color to green. It should never show up. + gl.clearColor(0, 1, 0, 1); + + let c = gl.canvas; + var maxSamples = gl.getInternalformatParameter( + gl.RENDERBUFFER, gl.RGBA8, gl.SAMPLES)[0]; + for (let i = 0; i < 2; ++i) { + runTest(gl, {alloc1: {w: c.width, h: c.height, s: maxSamples}, alloc2: null}); + runTest(gl, {alloc1: null, alloc2: {w: c.width, h: c.height, s: maxSamples}}); + + // Tests for initially allocating at the wrong size. + // This is caused by a Qualcomm driver bug: http://crbug.com/696126 + runTest(gl, {alloc1: {w: 5, h: 5, s: maxSamples}, alloc2: {w: c.width, h: c.height, s: maxSamples}}); + runTest(gl, {alloc1: {w: 5, h: 5, s: maxSamples}, alloc2: {w: c.width, h: c.height, s: 0}}); + runTest(gl, {alloc1: {w: 5, h: 5, s: 0}, alloc2: {w: c.width, h: c.height, s: maxSamples}}); + } + + // Testing buffer clearing won't change the clear values. + var clearColor = gl.getParameter(gl.COLOR_CLEAR_VALUE); + shouldBe("clearColor", "[0, 1, 0, 1]"); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, 'should be no errors'); +} + +function runTest(gl, params) { + debug("Test for color buffer: " + JSON.stringify(params)); + let resolve = params.alloc2 ? params.alloc2 : params.alloc1; + wtu.checkCanvasRect(gl, 0, 0, resolve.w, resolve.h, + [0, 0, 0, 0], + "internal buffers have been initialized to 0"); + + // fill the back buffer so we know that reading below happens from + // the renderbuffer. + gl.clear(gl.COLOR_BUFFER_BIT); + + // Set up non-multisampled buffer to blit to and read back from. + var fbo = gl.createFramebuffer(); + gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); + var buffer = gl.createRenderbuffer(); + gl.bindRenderbuffer(gl.RENDERBUFFER, buffer); + gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA8, resolve.w, resolve.h); + attachBuffer(buffer); + shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", + "gl.FRAMEBUFFER_COMPLETE"); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, 'should be no errors'); + gl.clear(gl.COLOR_BUFFER_BIT); + wtu.checkCanvasRect(gl, 0, 0, resolve.w, resolve.h, + [0, 255, 0, 255], + "user buffer has been cleared to green"); + + // Set up multisampled buffer to test. + var fbo_m = gl.createFramebuffer(); + gl.bindFramebuffer(gl.FRAMEBUFFER, fbo_m); + var buffer_m = gl.createRenderbuffer(); + gl.bindRenderbuffer(gl.RENDERBUFFER, buffer_m); + + if (params.alloc1) { + allocStorage(params.alloc1.w, params.alloc1.h, params.alloc1.s); + } + attachBuffer(buffer_m); + if (params.alloc2) { + if (params.alloc1) { + // Clear the FBO in order to make sure framebufferRenderbuffer is + // committed. (In Firefox, framebufferRenderbuffer is deferred, so + // this is needed to trigger the bug.) + gl.clear(gl.COLOR_BUFFER_BIT); + } + allocStorage(params.alloc2.w, params.alloc2.h, params.alloc2.s); + } + + function allocStorage(width, height, samples) { + gl.renderbufferStorageMultisample( + gl.RENDERBUFFER, samples, gl.RGBA8, width, height); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, + "should be no error after renderbufferStorageMultisample(RGBA8)."); + } + + function attachBuffer(buffer) { + gl.framebufferRenderbuffer( + gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, buffer); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, + "should be no error after framebufferRenderbuffer."); + } + + shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", + "gl.FRAMEBUFFER_COMPLETE"); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, 'should be no errors'); + + // Blit from multisampled buffer to non-multisampled buffer. + gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo_m); + gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo); + // Blit color from fbo_m (should be black) to fbo (should be green) + gl.blitFramebuffer(0, 0, resolve.w, resolve.h, + 0, 0, resolve.w, resolve.h, + gl.COLOR_BUFFER_BIT, gl.NEAREST); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, 'should be no errors'); + + gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); + wtu.checkCanvasRect(gl, 0, 0, resolve.w, resolve.h, + [0, 0, 0, 0], + "user buffer has been initialized to 0"); + + gl.deleteFramebuffer(fbo_m); + gl.deleteRenderbuffer(buffer_m); + gl.deleteFramebuffer(fbo); + gl.deleteRenderbuffer(buffer); + + // this clear should not matter we are about to resize + gl.clear(gl.COLOR_BUFFER_BIT); + + gl.canvas.width += 1; + gl.canvas.height += 1; + + wtu.glErrorShouldBe(gl, gl.NO_ERROR, 'should be no errors'); + debug(''); +} + +var successfullyParsed = true; +</script> +<script src="../../js/js-test-post.js"></script> +</body> +</html> |