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| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>Tests if mipmap generation on a texture filled by an FBO works correctly</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../resources/js-test-pre.js"></script> |
| <script src="../resources/webgl-test.js"> </script> |
| <script src="../resources/webgl-test-utils.js"> </script> |
| </head> |
| <body> |
| <canvas id="example" width="24" height="24"></canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| function init(){ |
| var wtu = WebGLTestUtils; |
| description(); |
| |
| var gl = wtu.create3DContext("example"); |
| var program = wtu.setupTexturedQuad(gl); |
| |
| // setup render target texture // |
| var texture = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, texture); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR); |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB, 2, 2, 0, gl.RGB, gl.UNSIGNED_BYTE, null); |
| gl.bindTexture(gl.TEXTURE_2D, null); |
| |
| // setup framebuffer // |
| var fbo = gl.createFramebuffer(); |
| gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); |
| gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0); |
| gl.bindFramebuffer(gl.FRAMEBUFFER, null); |
| |
| // fill the framebuffer // |
| gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); |
| gl.clearColor(1, 0, 1, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| gl.bindFramebuffer(gl.FRAMEBUFFER, null); |
| |
| // generate mipmap // |
| gl.bindTexture(gl.TEXTURE_2D, texture); |
| gl.generateMipmap(gl.TEXTURE_2D); |
| |
| gl.drawArrays(gl.TRIANGLES, 0, 6); |
| |
| // readback // |
| wtu.checkCanvas(gl, [255, 0, 255, 255]); |
| } |
| |
| init(); |
| var successfullyParsed = true; |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| |
| </body> |
| </html> |
| |
