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When the SurfaceHeapclass is created, the constructor allocates a heap starting from an address that you specify. Initially, drivers should create a SurfaceHeapobject, giving it the total memory size available for graphics. Thereafter, that SurfaceHeapobject can be used to request smaller blocks of data.
When a SurfaceHeapobject is destroyed, memory that has been allocated for it, and all of its subheaps, is marked for reuse. If the top-level heap is destroyed, all memory is deallocated.
SurfaceHeap ( DWORD size , ADDRESS base , SurfaceHeap * pNext , SurfaceHeap * pPrev );
Parameters
- size
- The size, in bytes, for the new heap. When you first create your heap, this value should be the total size of available memory.
- base
- The starting address for the heap.
- pNext
- The next heap in the list. When the heap is first created, this parameter should be set to NULL.
- pPrev
- The previous heap in the list. When the heap is first created, this parameter should be set to NULL.
Last updated on Tuesday, July 13, 2004