Making the Applications Interesting - Essentials of Interactive Computer Graphics - page 345

class UWBD3D _ TextureResource : public UWBD3D _ Resource {
.

Source file. uwbgl _ D3D
TextureResource1.h
file in the D3D Files/
D3D_Resources

// Access the D3D Texture Structure
A: LPDIRECT3DTEXTURE9 GetD3DTexture();
protected :
// To load image file

subfolder

UWBGL _ D3D _ Lib13

of the

project.

B: virtual bool LoadResourceFromFile(fullPathName);

// D3D Texture structure

LPDIRECT3DTEXTURE9 m _ pTexture;
.

C:

Listing 12.13. Texture resource support.

tion for accessing the D3D texture structure. At label B, LoadResourceFrom
File() is overridden to load the specified image file into the D3D texture struc-
ture defined at label C (similar to the texture loading shown in Listing 12.10).

Texture Resource Storage and Activation

At label B of Listing 12.14, we see an array of file texture resources. The FindTex
tureResource() function searches the file texture resource array for a texture file
name. If the name is not found, the image file will be opened, and a new texture re-
source will be created and stored into the file texture resource table. Listing 12.15
shows the implementation of the activate/deactivate texture methods. At label A,

class UWBD3D _ GraphicsSystem {
.

Source file.
uwbgl _ GraphicsSystem3.h
file in the D3D Files/
D3D_GraphicsSystem
subfolder

A: bool ActivateTexture(texName ...); // enable texture mapping

void DeactivateTexture(); // disable texture mapping

of the

UWBGL _ D3D _ Lib13 project.

.
// table (array) of file textures

UWB _ PointerArray<UWBD3D _ TextureResource * >m _ texture _ resources;
// find texture in table
UWBD3D _ TextureResource * FindTextureResource(texture _ name ...);
.

B:

Listing 12.14. Array of texture resources in UWBGL .