framebuffer - WebGL: Display Depth Texture -


i'm new webgl , trying implement depth textures later usage in shadow maps. below code of initilisation of framebuffer. in function drawtest first bind buffers needed , draw vertices of model framebuffer attached texture. shouldn't work? got white screen , no error.

this.drawtest = function (model1) {      this.model1 = model1;           if (model1.image.readystate === true && model1.ready === false) {             this.preparemodel(model1);         }         if (model1.ready) {             gl.bindbuffer(gl.array_buffer, this.model1.vertices);             gl.vertexattribpointer(this.vertexposition, 3, gl.float, false, 0, 0);             gl.bindbuffer(gl.element_array_buffer, model1.triangles);         }          gl.bindframebuffer(gl.framebuffer, this.depthframebuffer);          gl.clear(gl.depth_buffer_bit);          gl.drawelements(gl.triangles, model1.numitems, gl.unsigned_short, 0);     }   this.initdrawdepth = function(size) {          this.depthtextureext = gl.getextension("webgl_depth_texture"); // or browser-appropriate prefix         if(!this.depthtextureext) {              console.log("webgl_depth_texture extension not available!");              return;          }          // create color texture         this.colortexture = gl.createtexture();         gl.bindtexture(gl.texture_2d, this.colortexture);         gl.texparameteri(gl.texture_2d, gl.texture_mag_filter, gl.nearest);         gl.texparameteri(gl.texture_2d, gl.texture_min_filter, gl.nearest);         gl.texparameteri(gl.texture_2d, gl.texture_wrap_s, gl.clamp_to_edge);         gl.texparameteri(gl.texture_2d, gl.texture_wrap_t, gl.clamp_to_edge);         gl.teximage2d(gl.texture_2d, 0, gl.rgba, size, size, 0, gl.rgba, gl.unsigned_byte, null);          this.depthtexture = gl.createtexture();         gl.bindtexture(gl.texture_2d, this.depthtexture);         gl.texparameteri(gl.texture_2d, gl.texture_mag_filter, gl.nearest);         gl.texparameteri(gl.texture_2d, gl.texture_min_filter, gl.nearest);         gl.texparameteri(gl.texture_2d, gl.texture_wrap_s, gl.clamp_to_edge);         gl.texparameteri(gl.texture_2d, gl.texture_wrap_t, gl.clamp_to_edge);         gl.teximage2d(gl.texture_2d, 0, gl.depth_component, size, size, 0, gl.depth_component, gl.unsigned_short, null);         // var framebuffer = gl.createframebuffer();         this.depthframebuffer = gl.createframebuffer();         gl.bindframebuffer(gl.framebuffer, this.depthframebuffer);         gl.framebuffertexture2d(gl.framebuffer, gl.color_attachment0, gl.texture_2d, this.colortexture, 0);         gl.framebuffertexture2d(gl.framebuffer, gl.depth_attachment, gl.texture_2d, this.depthtexture, 0);          if(!gl.checkframebufferstatus(gl.framebuffer) === gl.framebuffer_complete) {             console.log("framebuffer incomplete!");         }          //reset framebuffer         gl.bindframebuffer(gl.framebuffer, null);          this.depthtexturesize = size;      }

i managed solve problem. had function causing trouble original buffers. tried figure out problem.


Comments

Post a Comment

Popular posts from this blog

python - How to create a legend for 3D bar in matplotlib? -

Image
given ax = plt.subplot() : ax.bar()[0] can passed plt.legend() . however, ax.bar3d() returns none . how create legend displayed bars? update: passing legend="stuff" ax.bar3d() , calling ax.legend() raises /usr/lib/python2.6/site-packages/matplotlib/axes.py:4368: userwarning: no labeled objects found. use label='...' kwarg on individual plots. warnings.warn("no labeled objects found. " you need use proxy artist legends not supported. this code: from mpl_toolkits.mplot3d import axes3d import matplotlib.pyplot plt import numpy np fig = plt.figure() ax = fig.add_subplot(111, projection='3d') x, y = np.random.rand(2, 100) * 4 hist, xedges, yedges = np.histogram2d(x, y, bins=4) elements = (len(xedges) - 1) * (len(yedges) - 1) xpos, ypos = np.meshgrid(xedges[:-1]+0.25, yedges[:-1]+0.25) xpos = xpos.flatten() ypos = ypos.flatten() zpos = np.zeros(elements) dx = 0.5 * np.ones_like(zpos) dy = dx.copy() dz = hist.flatten() ax...
Read more

java - Multi-Label Document Classification -

i have database in store data based upon following 3 fields: id, text, {labels}. note each text has been assigned more 1 label \ tag \ class. want build model (weka \ rapidminer \ mahout) able recommend \ classify bunch of labels \ tags \ classes given text. i have heard svm , naive bayes classifier, not sure whether support multi-label classification or not. guides me right direction more welcome! the basic multilabel classification method one-vs.-the-rest (ovr), called binary relevance (br). basic idea take off-the-shelf binary classifier, such naive bayes or svm, create k instances of solve k independent classification problems. in python-like pseudocode: for each class k: learner = svm(settings) # example labels = [class_of(x) == k x in samples] learner.learn(samples, labels) then @ prediction time, run each of binary classifiers on sample , collect labels predict positive. (both training , prediction can done in parallel, since problems assumed ...
Read more

php - Dynamic url re-writing using htaccess -

how can rewrite http://mydomain.com/test/master.php?catid=2&subcatid=8 http://mydomain.com/test/master.php/catname/subcat using .htaccess file. once rewritten, how can access these parameters in master.php? note: untested, let me know if doesn't work. rewriterule ^master.php/([a-za-z0-9_-]+)/([a-za-z0-9_-]+)$ /master.php?catid$1&subcatid=$2 [l]
Read more