First, we will load an image using an image loader.  In the template code, there is a helper class CTexture.  We can use it load a texture like this:

CTexture m_texture;
m_texture.Load(filename);

• The method Load() will generate a texture object, bind the texture, and transfer it to the GPU

In our VBO, we can include texture coordinates as vertex attributes.  For example, interleaved attributes:




Recall the VBO is highly configurable and could include additional vertex attributes.  In the template, the VBO contains

• Position
• Texture coordinate
• Normal

In the fragment shader, we will use a sampler to read texels at different fragment locations.  On the client side, we must indicate which texture unit the sampler will use.  For example:

pMainProgram->SetUniform("sampler0", 0);

• This will instruct the sampler “sampler0” in the fragment shader to use texture unit 0 (more on this later).

Before rendering, we must bind the texture to make it active:

m_texture.Bind();

Rendering occurs with the function glDrawArrays() or one of its variants.

High