| <!-- |
| 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 clearColor with pure 0/1</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"; |
| // This test verifies a Mac Intel HD 6000/6100 driver bug. See crbug.com/710443. |
| var wtu = WebGLTestUtils; |
| var gl = wtu.create3DContext("canvas"); |
| |
| function InitializeRGBAData(width, height) |
| { |
| var size = 4 * width * height; |
| var data = new Uint8Array(size); |
| for (var i = 0; i < size; i++) { |
| data[i] = 128; |
| } |
| return data; |
| } |
| |
| function testFramebufferTextureClearWithPureZeroOrOne(clearColor, expectedColor) { |
| var width = 32; |
| var height = 32; |
| var texture0 = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, texture0); |
| // It seems that if we add texParameteri here, all cases can pass no matter |
| // you use texParameteri or not in Line 85. |
| // gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); |
| var texData = InitializeRGBAData(width, height); |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, texData); |
| |
| var fbo0 = gl.createFramebuffer(); |
| gl.bindFramebuffer(gl.FRAMEBUFFER, fbo0); |
| gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture0, 0); |
| gl.viewport(0, 0, width, height); |
| gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| |
| var texture1 = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, texture1); |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); |
| var fbo1 = gl.createFramebuffer(); |
| gl.bindFramebuffer(gl.FRAMEBUFFER, fbo1); |
| gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture1, 0); |
| |
| wtu.setupTexturedQuad(gl); |
| |
| gl.bindTexture(gl.TEXTURE_2D, texture0); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); |
| gl.bindFramebuffer(gl.FRAMEBUFFER, fbo1); |
| gl.viewport(0, 0, width, height); |
| gl.drawArrays(gl.TRIANGLES, 0, 6); |
| |
| wtu.checkCanvasRect(gl, 0, 0, 1, 1, expectedColor); |
| |
| gl.deleteTexture(texture0); |
| gl.deleteFramebuffer(fbo0); |
| gl.deleteTexture(texture1); |
| gl.deleteFramebuffer(fbo1); |
| } |
| |
| description("Test that if clear fbo texture color with pure 0/1 and sample this texture to draw to another fbo, the final render color should be consistent with the clear color."); |
| |
| for(var index = 0; index < 16; index++) |
| { |
| var r = (index & 8) / 8; |
| var g = (index & 4) / 4; |
| var b = (index & 2) / 2; |
| var a = index & 1; |
| var clearColor = [r, g, b, a]; |
| var expectedColor = [r * 255, g * 255, b * 255, a * 255]; |
| testFramebufferTextureClearWithPureZeroOrOne(clearColor, expectedColor); |
| } |
| |
| debug(""); |
| var successfullyParsed = true; |
| |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| |
| </body> |
| </html> |