Minimap texture tileing problem

[alek900]

Small bug i have.

basicly what I try to do is to create a "map viewer" for WoW but when i Zoom out to see an entire continent, this is what i get



my basic formula for calculating the possition of a tile.
posX = (Tile_X * 256) * Zoom
PosY = (Tile_Y * 256) * Zoom

[BoogieManTM]

looks like the whole continent to me. I don't understand the problem?

[alek900]

looks like the whole continent to me. I don't understand the problem?

its drawn with 1 pixel between every x amount of tiles (gray "grid") wiche shouldent be there.

Edit:

this how it should look

Renderd by first makeing it scale 1:1 and then scaleing the whole image down to size, wiche uses alot of resources.

[run32.dll]

What are you using to draw the tiles, a 3D API like D3D or OpenGL?

If you are using OpenGL and these grey lines show up between the tiles (its hard to see via screenshots) "GL_CLAMP_TO_EDGE" may help:

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

btw there is a special island missing in the upper left corner ... but I bet you know that :P