No, that's not what cube maps are for. You can only draw 1 texture at a time (unless multitexturing but that's totally different and not what you want) so you have 2 options:
1) Combine all textures together into a single one and map the coordinates to each side accordingly (will run much faster) 2) Draw side-at-a-time binding to the appropriate texture for each side. (not usually the preferred method.) A trick many of us use when doing something like... say you want to have the user pick 6 photos from their SD card and then you want to display those on a cube, one on each face. At some point you must load each photo up, clipping and scaling it to fit aspect ratio and a power-of-two texture and then uploading it to vram. Well, instead of uploading each one as a separate texture, why not just create a 1024x1024 bitmap and draw all 6 photos to it in different spots. You could use 50% of the texture vertically and 33% horizontally (for example) to pack 6 photos onto it for 100% usage. It's ok if they distort going on to it so long as you draw them aspect-correct. You then keep track of which one is where (using UVs, so percentages from 0 to 1). Upload that texture atlas as a single texture and when you draw your cube, you just bind to that atlas once and draw everything in one shot. It'll run fast and it's not really that hard to do. On Jun 25, 6:26 pm, chaitanya <vengeance...@gmail.com> wrote: > Hi, > I have just began opengl programming in android and i am fairly > new to opengl as well. I've been using nehe's opengl tutorials as well > as insanitydesign's android ports. I successfully managed to create a > cube with a single texture mapped to all its 6 faces. I even mapped > multiple textures to different faces of the cube. > But the way I did it was to create 6 faces seperately, have 6 > seperate index and texture buffers and then using glBindTexture() with > the selected texture for each face and then calling glDrawElements. > Isn't there an efficient way around this. Should i use a cube map > texture instead of a GL_TEXTURE_2D? > > Any suggestions would be appreciated? > Thanks -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
