c++ - Fully transparent torus in OpenGL -

-

I have a Torres provided by OpenGL and can map a texture; There is no problem till the texture is not opaque. But when I make the color selectively transparent, it does not work. Or rather: this works but only in some areas based on the order of the triangle in the top buffer; See the difference with the outer equator black and white torus with problem Torus should be equally covered by spots .

The source image will be PNG, however for now I work with BMP because it is easy to load (Texture loading is part of the tutorial tutorial). The white background of the image and above it is the different color spots; It is not transparent, with the desired result spots, there is almost transparent torus. Both the front and rear side spots should appear. Rendering will be offline, so I do not need speed; I need to create an image of Torus with an image of its surface.

So far my code looks like this (it's a merge of two examples):

The piece is cinematographer:

#Version 330 core / Interpolated value with peak shaders in VPC2 / UV; // Ouput data vec4 color out; // Valid Sampler Uniform Sampler 2D Matures Sampler for Entire Traps; Zero Main () {// Output Color = Texture Texture (myTextureSampler, UV) on specified UV color.rgb = texture2D .rgb; If (color.r == 1 & amp; amp; color.g == 1 & amp; amp; color.b == 1) {color.a = 0.2; } And {color.a = 1; }}

I know that this order is related to the order, what can I do (but do not know what will work):

  1. Input Add transparency to the image (and find the code that loads such an image).
  2. Something in two vertex shaders (see)
  3. Sorting will solve my problem, but if I get it correctly, then I have to implement it myself. Each triangle has to get a center (easy), it must be projected with my matrix and comparing z values.

  4. Change the blending and depth handling in some way: 

      glEnable (GL_BLEND); Globefenk (GLICCR_ALPHA, GL_ONMINUSISUSRCCLAAPHA); GlEnable (GL_DEPTH_TEST); GlDepthMask (GL_TRUE); GlDepthFunc (GL_LEQUAL); Gloditrange (0.0 f, 1.0f);       
     I need a suggestion, how to continue.  
     
      Update , it fixes almost the problem:    glDisable (GL_DEPTH_TEST); // glDepthMask (GL_TRUE); GlDepthFunc (GL_NEVER); // glDepthRange (2.0.0 f, 1.0f);

    I want to write that this game does not separate front and back, but then I realized that they are almost white and there is no difference in blending with white color.

    The new image of Taurus with colorful texture is: color

    The remaining problems are:

    1. The red spots are blue - it is related to the BMP (no matter) loading function
    2. All the spots in the input images are the same The size, big spots should be on the top and therefore saturated and does not mix with the white body of the taurus. It seems that the order should be opposite. If you compare it with the previous image, then being present there, bigger places were prepared correctly and the little ones were hidden (behind the taurus).

    ? First problem was solved by disabling the depth test (see update in question)

The second problem was solved by the manual sorting of the array of all triangles. It works well for the 20000 triangle even in real time, which is more than enough for my purpose

Resultant source code:

It is based on and used in OpenGL Tutorial Includes:


Comments

Post a Comment

Popular posts from this blog

winforms - C# Form - Property Change -

-
I have a form that has a property named car A class with many properties. The Properties is being displayed on the current car on the basis of some user actions that are being displayed. So I have to know whether the property has been allocated or set to zero. I'm aware of INotifyPropertyChanged , but in my case I'm not sure that since this change I have changed my car properties car do not want to monitor the property. Any idea how to accomplish this? In advance thank you If you have created a true asset in your class then You should be a great and setter, you can add the code directly to the form property in order to take action on the basis of "form": Public partial category Form 1: form {public form 1 () {InitializeComponent (); } // define car square public class car {public string name = string. Empty; } // private car to keep the value of the current car private variable _car = null; // Property of public form which you can ru...
Read more

c# - NewtonSoft JArray - how to select multiple elements with LINQ -

-
Image
I have some Jason which I then parsed the Jerry object. I want to filter Jerere so that he has only two properties, title and bodytext. But whatever I try I can only select a value using LINQ [HttpGet] Public JsonResult AjaxGetNewsItems () {string json = JsonConvert.SerializeObject (news.GetNewsItems (), Formatting: formatting.Indented); Var v = Jairo Purse (jason); // arrow item = // v.Where (// X =>.! // X ["title"] ToString () = string.Empty & amp; //X ["BodyText"] ToString ()! = String.Empty) // Select (x = & gt; x ["title"]) // .toList (); Var title = (string) v [0] ["title"]; Var titleBodytext = v selectively v [0] ["title"] ["bodytext"]; Foreach (item in titleBodytext) {} // Title: Biodtext = // v [0] ["title"] ["BodyText"] by c // // Group c // new selection from c in gram // {}; // JArray a = JArray.FromObject (news.GetNewsItems ()); // string titlebodietext = (string) news item [...
Read more

javascript - amcharts makechart not working -

-
I am trying to create an amiratars serial chart on my Durandal single page application. This chart was working fine on Chrome browser but it is not working on IE. Can you please help me in this regard. Error while using Amcharts. The Macchart () method does not support the object in this object in IE.
Read more