I'm trying to texture an image to a square that I draw on the scene. However, I get a silly looking blue square instead. I don't think it's in the setup of the texture because I get that code from a tutorial. I think the problem is in the way I define the texture bind points. I assumed they would match up with the points of the square. Am I anchoring my texture points wrong or should I go back to my texture load routine? glEnable(GL_TEXTURE_2D); glBindTexture(GL_TEXTURE_2D, mTextureName); glColor3f(1.0, 1.0, 1.0); //white glBegin(GL_QUADS); glTexCoord2d(-100.0, 100.0); glVertex2d(-100.0, 100.0); glTexCoord2d(100.0, 100.0); glVertex2d(100.0, 100.0); glTexCoord2d(100.0, -100.0); glVertex2d(100.0, -100.0); glTexCoord2d(-100.0, -100.0); glVertex2d(-100.0, -100.0); glEnd(); glBindTexture(GL_TEXTURE_2D, 0);

Quote:Original post by fathom88
I'm trying to texture an image to a square that I draw on the scene. However, I get a silly looking blue square instead. I don't think it's in the setup of the texture because I get that code from a tutorial. I think the problem is in the way I define the texture bind points. I assumed they would match up with the points of the square. Am I anchoring my texture points wrong or should I go back to my texture load routine?

Make sure your texture width and height are powers of two. Then try:


Tom

Yeah, its with your coordinates.

Texture mapping clips the texture to the range [0,1] such that 1 represents the maximum value of the dimension in the texture. One way to think about it is like percent coordinates.

You should therefore change your code to:


Which will render the texture 4 times on the image:

    (-1,-1) +---+---+         |   |0,0|        +---+---|        |   |   |        +---+---+  (1,1)

Random Tutorial

EDIT: Beaten :(

Thanks for all the help. I'll give it a try after lunch.