problem with textures while drawing !!!

OpenGL OpenGL: Advanced Coding
1

Hi All,

I’m building an application where i’ve rendered various geometries. after rendering geometric objects i’m also trying to put names on them. i’m creating and loading the textures in different file b’coz i’m using freetype for rendering text.

But after drawing the text all the geometric objects gets transparent each time with different Alpha values. I’m using two channel alpha values for drawing the textures.

//loading textures
glTexImage2D( GL_TEXTURE_2D, 0, GL_ALPHA8, width_gl, height_gl, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, expanded_data );

//setting the properties

glBindTexture(GL_TEXTURE_2D,textures[i]);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);

Where i’m going wrong???
please correct me. Thanks

2
  1. Do you think you are an advanced opengl programmer ?
  • YES : then you are wrong.
  • NO : then you post on the wrong forum section.

Do you need textures on your geometries ? If no, then glDisable(GL_TEXTURE_2D) before drawing. Enable it back before drawing the text.

3

sorry for posting in a wrong section :slight_smile: :stuck_out_tongue:
thanks for replying i’ll try that