Hi ! It seems that I can't plot textures when disabling the RECTANGLE_EXT extension mode. Since Extensions is available on most graphics card, I currently don't use GL_TEXTURE_2D and points my textures with plain int coords (width,height).
But when using GL_TEXTURE_2D instead of GL_TEXTURE_RECTANGLE_EXT or the NV or ARB ones, using normalized coords, textures don't work anymore.
Is this a bug or any similar reviews ?