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Lesson 10: Texturing issue

Started by eDuDe Apr 10, 2012 at 5:39 AM 1 replies 4.3k views

Original Post

Apr 10, 2012 at 5:39 AM

I have a modified (just using classes and a different variable naming scheme) version of Lesson 10 working, but I get this weird texturing issue and the only thing I can think of is it is related to loading in textures using SOIL. I even went as far as modifying the sample code to use SOIL, and I get the same result:

http://imgur.com/24gGJ

Here is my texture loading code, which seemed to work for previous lessons (I've been doing them sequently), debug code stripped out:


 texture[0] = SOIL_load_OGL_texture( "Assets/2D/Mud.bmp",
 SOIL_LOAD_AUTO,
 SOIL_CREATE_NEW_ID,
 SOIL_FLAG_INVERT_Y );
 
 texture[1] = SOIL_load_OGL_texture( "Assets/2D/Mud.bmp",
 SOIL_LOAD_AUTO,
 SOIL_CREATE_NEW_ID,
 SOIL_FLAG_INVERT_Y );
 
 texture[2] = SOIL_load_OGL_texture( "Assets/2D/Mud.bmp",
 SOIL_LOAD_AUTO,
 SOIL_CREATE_NEW_ID,
 SOIL_FLAG_INVERT_Y | SOIL_FLAG_MIPMAPS );
 
 glBindTexture(GL_TEXTURE_2D, texture[0]);
 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
 
 glBindTexture(GL_TEXTURE_2D, texture[1]);
 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
 
 glBindTexture(GL_TEXTURE_2D, texture[2]);
 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST);

.

Any idea what is up?

i_luv_cplusplus

Apr 11, 2012 at 8:28 AM

This looks like UV coordinates problem. Are you sure you are setting UV coordinates (glTexCoord2f) for every vertex?

eDuDe

Apr 15, 2012 at 2:19 AM

I'm loading it all from the world file given in the sample:


 float x, y, z, u, v;
 int tris;
 char textline[255];
 FILE *filein = fopen( "Assets/Worlds/World.txt", "rt");
 ReadStr( filein, textline );
 sscanf( textline, "NUMPOLLIES %d\n", &tris);
 sector1.numTriangles = tris;
 sector1.triangles = new triangle[sector1.numTriangles];
 for ( int triangles = 0 ; triangles < sector1.numTriangles ; triangles++ )
 {
 for ( int vert = 0 ; vert < 3 ; vert++ )
 {
 ReadStr(filein, textline);
 sscanf(textline, "%f %f %f %f %f", &x, &y, &z, &u, &v);
 sector1.triangles[triangles].vertices[vert].x = x ;
 sector1.triangles[triangles].vertices[vert].y = y ;
 sector1.triangles[triangles].vertices[vert].z = z ;
 sector1.triangles[triangles].vertices[vert].u = u ;
 sector1.triangles[triangles].vertices[vert].v = v ;
 }
 }
 fclose(filein);

It looked fine when stepping through the code, and I pretty much copy/pasted the tutorial project into mine with the modified texture loading and got the same result which is why I believe it has something to do with misusing SOIL.

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