如何在 3d Sphere 上绑定 2D 纹理

Question

I am done with my sphere,its movements and all . I am just struck on texture stuff. Not able to load even a simple texture. So anyone have any idea about it enlighten me.

Answer 1

I would like to give u very basic Info:

First of all you need to learn about texture coordinates. It will have x and y components.Both components will range 0 to 1.

To add texture to any mesh/object you need provide texture coords.For simple rectangle mesh with image, they will be (0,0),(1,0),(1,1),(0,1)

Like wise you need to calculate tex coords for your sphere also. U can do the same while generating vertices for your sphere. These generated tex coords which will have their X and Y components in range [0,1] and wrap given rectangular/square image around the sphere.

Sample flow: tex corrds array -> vbo ->shader -> shader sampler -> pixel set to framebuffer