Tutorial 6 : Texturing

In this Tutorial we want to use the same texturing as the original OpenGL program, i.e. if you remove shaders it should look same way.

I load 2 textures and use glBindTexture(..) before drawing a teapot.

Vertex Shader Source

void main(void)
{
 gl_TexCoord[0] = gl_MultiTexCoord0;
 gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; 
}

gl_MultiTexCoord0: Our texture is in unit 0, we fill the predefined varying variable gl_TexCoord[0] with it. (In Tutorial 8 we will learn more about multitexturing).

Fragment Shader Source

uniform sampler2D myTexture;

void main (void)
{
  gl_FragColor  = texture2D(myTexture, vec2(gl_TexCoord[0]));         
}

Go to Tutorial 7