Revisions to Problem when texturing triangles using glVertexPointer()

deleted 366 characters in body

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edited Nov 11, 2012 at 19:47

3.3k
1
28
44

I'm having a problem for displaying a single quad, here is how i do :

enter image description here

//note: this code is only for 2 triangles, while on picture there is 4 triangles
float tex_coord[] =
{
   0.0, 0.0, //3
   0.0, 1.0, //2
   1.0, 1.0, //0
   1.0, 1.0, //0
   1.0, 0.0, //1
   0.0, 0.0
};  //how many coords should i give3
}; ?

int indexes[] = 
{
    3, 2, 0, 0, 1, 3
}

float vertexes[] = 
{
   -37, 0, 30,
   -38, 0, 29,
   -41, 0, 32,
   -42, 0, 31
}

 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 glEnableClientState(GL_VERTEX_ARRAY);
   glVertexPointer(3, GL_FLOAT, 0, vertexes);
   glTexCoordPointer(2, GL_FLOAT, 0, tex_coord);
   glDrawElements(GL_TRIANGLES, 2, GL_UNSIGNED_INT, indices);
 glDisableClientState(GL_VERTEX_ARRAY);
 glDisableClientState(GL_TEXTURE_COORD_ARRAY);

The result :

enter image description here

I try to put 4x4 pairs of (u,v) coords (thus 16 in total), hoping it will work like in first situation (only one "row" of triangles) :

Here is what i give :

(0,0)
(0,1)   (x 4)
(1,1)
(1,0)

But it didn't worked.

I'm having a problem for displaying a single quad, here is how i do :

enter image description here

float tex_coord[] =
{
   0.0, 0.0,
   0.0, 1.0,
   1.0, 1.0,
   1.0, 1.0,
   1.0, 0.0,
   0.0, 0.0
};  //how many coords should i give ?

int indexes[] = 
{
    3, 2, 0, 0, 1, 3
}

float vertexes[] = 
{
   -37, 0, 30,
   -38, 0, 29,
   -41, 0, 32,
   -42, 0, 31
}

 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 glEnableClientState(GL_VERTEX_ARRAY);
   glVertexPointer(3, GL_FLOAT, 0, vertexes);
   glTexCoordPointer(2, GL_FLOAT, 0, tex_coord);
   glDrawElements(GL_TRIANGLES, 2, GL_UNSIGNED_INT, indices);
 glDisableClientState(GL_VERTEX_ARRAY);
 glDisableClientState(GL_TEXTURE_COORD_ARRAY);

The result :

enter image description here

I try to put 4x4 pairs of (u,v) coords (thus 16 in total), hoping it will work like in first situation (only one "row" of triangles) :

Here is what i give :

(0,0)
(0,1)   (x 4)
(1,1)
(1,0)

But it didn't worked.

I'm having a problem for displaying a single quad, here is how i do :

enter image description here

//note: this code is only for 2 triangles, while on picture there is 4 triangles
float tex_coord[] =
{
   0.0, 0.0, //3
   0.0, 1.0, //2
   1.0, 1.0, //0
   1.0, 1.0, //0
   1.0, 0.0, //1
   0.0, 0.0  //3
}; 

int indexes[] = 
{
    3, 2, 0, 0, 1, 3
}

 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 glEnableClientState(GL_VERTEX_ARRAY);
   glVertexPointer(3, GL_FLOAT, 0, vertexes);
   glTexCoordPointer(2, GL_FLOAT, 0, tex_coord);
   glDrawElements(GL_TRIANGLES, 2, GL_UNSIGNED_INT, indices);
 glDisableClientState(GL_VERTEX_ARRAY);
 glDisableClientState(GL_TEXTURE_COORD_ARRAY);

The result :

enter image description here

added 139 characters in body

Source Link

edited Nov 11, 2012 at 19:32

tigrou

3.3k
1
28
44

I'm having a problem for displaying a single quad, here is how i do :

enter image description here

float tex_coord[] =
{
   0.0, 0.0,
   0.0, 1.0,
   1.0, 1.0,
   1.0, 1.0,
   1.0, 0.0,
   0.0, 0.0
};  //how many coords should i give ?

int indexes[] = 
{
    3, 2, 0, 0, 1, 3
}

float vertexes[] = 
{
   -37, 0, 30,
   -38, 0, 29,
   -41, 0, 32,
   -42, 0, 31
}

 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 glEnableClientState(GL_VERTEX_ARRAY);
   glVertexPointer(3, GL_FLOAT, 0, vertexes);
   glTexCoordPointer(2, GL_FLOAT, 0, tex_coord);
   glDrawElements(GL_TRIANGLES, 2, GL_UNSIGNED_INT, indices);
 glDisableClientState(GL_VERTEX_ARRAY);
 glDisableClientState(GL_TEXTURE_COORD_ARRAY);

The result :

enter image description here

butI try to put 4x4 pairs of (u,v) coords (thus 16 in total), hoping it didn'twill work like in first situation (only one "row" of triangles) :

Here is what i give :

(0,0)
(0,1)   (x 4)
(1,1)
(1,0)

But it didn't worked.

I'm having a problem for displaying a single quad, here is how i do :

enter image description here

float tex_coord[] =
{
   0.0, 0.0,
   0.0, 1.0,
   1.0, 1.0,
   1.0, 1.0,
   1.0, 0.0,
   0.0, 0.0
};  //how many coords should i give ?

int indexes[] = 
{
    3, 2, 0, 0, 1, 3
}

float vertexes[] = 
{
   -37, 0, 30,
   -38, 0, 29,
   -41, 0, 32,
   -42, 0, 31
}

 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 glEnableClientState(GL_VERTEX_ARRAY);
   glVertexPointer(3, GL_FLOAT, 0, vertexes);
   glTexCoordPointer(2, GL_FLOAT, 0, tex_coord);
   glDrawElements(GL_TRIANGLES, 2, GL_UNSIGNED_INT, indices);
 glDisableClientState(GL_VERTEX_ARRAY);
 glDisableClientState(GL_TEXTURE_COORD_ARRAY);

The result :

enter image description here

but it didn't work.

I'm having a problem for displaying a single quad, here is how i do :

enter image description here

float tex_coord[] =
{
   0.0, 0.0,
   0.0, 1.0,
   1.0, 1.0,
   1.0, 1.0,
   1.0, 0.0,
   0.0, 0.0
};  //how many coords should i give ?

int indexes[] = 
{
    3, 2, 0, 0, 1, 3
}

float vertexes[] = 
{
   -37, 0, 30,
   -38, 0, 29,
   -41, 0, 32,
   -42, 0, 31
}

 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 glEnableClientState(GL_VERTEX_ARRAY);
   glVertexPointer(3, GL_FLOAT, 0, vertexes);
   glTexCoordPointer(2, GL_FLOAT, 0, tex_coord);
   glDrawElements(GL_TRIANGLES, 2, GL_UNSIGNED_INT, indices);
 glDisableClientState(GL_VERTEX_ARRAY);
 glDisableClientState(GL_TEXTURE_COORD_ARRAY);

The result :

enter image description here

I try to put 4x4 pairs of (u,v) coords (thus 16 in total), hoping it will work like in first situation (only one "row" of triangles) :

Here is what i give :

(0,0)
(0,1)   (x 4)
(1,1)
(1,0)

But it didn't worked.

deleted 20 characters in body

Source Link

edited Nov 11, 2012 at 19:22

tigrou

3.3k
1
28
44

I'm having a problem for displaying a single quad, here is how i do :

enter image description here

float tex_coord[] =
{
   0.0, 0.0,
   0.0, 1.0,
   1.0, 1.0,
   1.0, 1.0,
   1.0, 0.0,
   0.0, 0.0
};  //how many coords should i give ?

int indexes[] = 
{
    3, 2, 0, 0, 1, 3
}

float vertexes[] = 
{
   -37, 0, 30,
   -38, 0, 29,
   -41, 0, 32,
   -42, 0, 31
}

 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 glEnableClientState(GL_VERTEX_ARRAY);
   glVertexPointer(3, GL_FLOAT, 0, vertexes);
   glTexCoordPointer(2, GL_FLOAT, 0, tex_coord);
   glDrawElements(GL_TRIANGLES, 2, GL_UNSIGNED_INT, indices);
 glDisableClientState(GL_VERTEX_ARRAY);
 glDisableClientState(GL_TEXTURE_COORD_ARRAY);

The result :

(with 2 triangles)

enter image description here

(with 4 triangles) enter image description here

enter image description here but it didn't work.

I'm having a problem for displaying a single quad, here is how i do :

enter image description here

float tex_coord[] =
{
   0.0, 0.0,
   0.0, 1.0,
   1.0, 1.0,
   1.0, 1.0,
   1.0, 0.0,
   0.0, 0.0
};  //how many coords should i give ?

int indexes[] = 
{
    3, 2, 0, 0, 1, 3
}

float vertexes[] = 
{
   -37, 0, 30,
   -38, 0, 29,
   -41, 0, 32,
   -42, 0, 31
}

 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 glEnableClientState(GL_VERTEX_ARRAY);
   glVertexPointer(3, GL_FLOAT, 0, vertexes);
   glTexCoordPointer(2, GL_FLOAT, 0, tex_coord);
   glDrawElements(GL_TRIANGLES, 2, GL_UNSIGNED_INT, indices);
 glDisableClientState(GL_VERTEX_ARRAY);
 glDisableClientState(GL_TEXTURE_COORD_ARRAY);

The result :

(with 2 triangles)

enter image description here

(with 4 triangles)

enter image description here

I'm having a problem for displaying a single quad, here is how i do :

enter image description here

float tex_coord[] =
{
   0.0, 0.0,
   0.0, 1.0,
   1.0, 1.0,
   1.0, 1.0,
   1.0, 0.0,
   0.0, 0.0
};  //how many coords should i give ?

int indexes[] = 
{
    3, 2, 0, 0, 1, 3
}

float vertexes[] = 
{
   -37, 0, 30,
   -38, 0, 29,
   -41, 0, 32,
   -42, 0, 31
}

 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 glEnableClientState(GL_VERTEX_ARRAY);
   glVertexPointer(3, GL_FLOAT, 0, vertexes);
   glTexCoordPointer(2, GL_FLOAT, 0, tex_coord);
   glDrawElements(GL_TRIANGLES, 2, GL_UNSIGNED_INT, indices);
 glDisableClientState(GL_VERTEX_ARRAY);
 glDisableClientState(GL_TEXTURE_COORD_ARRAY);

The result :

enter image description here

but it didn't work.

Tweeted twitter.com/#!/StackGameDev/status/267521906914230272

occurred Nov 11, 2012 at 6:59

added 125 characters in body

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edited Nov 10, 2012 at 20:47

tigrou

3.3k
1
28
44

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added 81 characters in body

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edited Nov 10, 2012 at 20:35

tigrou

3.3k
1
28
44

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asked Nov 10, 2012 at 20:04

tigrou

3.3k
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44

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