This program tests simultaneous use of preloaded and cached texture. Textured cubes are displayed on the screen. Out of the 16 textures used in this example some are preloaded and others use caches. You can set up to seven preloaded textures up (this program prepares only 8 regions shared for preloading and caching).
| Functions | Parameters | Description |
GXInitTexObj |
Pointer to image data. | Appropriate value. |
| Width and height | Fixed. | |
| format | Always GX_RGB565 |
|
| Wrap mode (s, t). | Always GX_REPEAT |
|
| Mipmap | Always GX_TRUE |
|
GXInitTexObjUserData |
User data pointer | Existing pointer (to texture region objects). |
GXGetTexObjUserData |
(no parameter) | |
GXPreLoadEntireTexture |
Texture region | Appropriate GXTexRegion object |
GXLoadTexObjPreLoaded |
Texture region | The correct region where the texture data is preloaded. |
| Destination texture name | Always GX_TEXMAP0 |
|
|
Destination texture name | Always GX_TEXMAP0 |
GXInitTexCacheRegion |
32-bit mipmap flag. | Always GX_FALSE |
| TMEM address (even, odd). | Appropriate lower bank address (even) Appropriate higher bank address (odd) |
|
| Cache size (even, odd). | Always GX_TEXCACHE_32K |
|
GXInitTexPreloadRegion |
TMEM address (even/odd) | Appropriate lower bank address (even) Appropriate higher bank address (odd) |
| Texture region size (even/odd) | Always 32768 | |
GXSetTexRegionCallBack |
Callback Functions | One function |
GXInvalidateTexAll |
(no parameter) | |
GXTexModeSync |
(no parameter) | |
GXSetTevOp |
TEV stage ID | Always GX_TEVSTAGE0 |
| Operation mode | Always GX_REPLACE |
START exits the demo.
The L and R Buttons change the number of preloaded textures (0-7).
If the number is n, textures with numbers that are less than n are preloaded.
The X and Y Buttons change the number of layers drawn.
Drawing many layers to check the difference in performance may be useful.
$REVOLUTION_SDK_ROOT/dvddata/gxTests/tex-07.tpl
2006/03/01 Initial version.
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