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Rearranged some code and added some comments to mgaAllocDmaLow. The

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modified code performs identically, but cuts 16KiB from the resulting
mga_dri.so.
This commit is contained in:
Ian Romanick
2005-05-16 23:23:51 +00:00
parent ffd97d20aa
commit c1082804a8
1 changed files with 15 additions and 7 deletions
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src/mesa/drivers/dri/mga/mgaioctl.h
+15 -7
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@@ -78,14 +78,22 @@ GLuint *mgaAllocDmaLow( mgaContextPtr mmesa, int bytes )
{
GLuint *head;
if (!mmesa->vertex_dma_buffer) {
/* If there is no DMA buffer currently allocated or the currently
* allocated DMA buffer doesn't have enough room left for this request,
* a new buffer will need to be allocated.
*/
if ( (mmesa->vertex_dma_buffer == NULL)
|| ((mmesa->vertex_dma_buffer->used + bytes)
> mmesa->vertex_dma_buffer->total) ) {
LOCK_HARDWARE( mmesa );
mmesa->vertex_dma_buffer = mga_get_buffer_ioctl( mmesa );
UNLOCK_HARDWARE( mmesa );
} else if (mmesa->vertex_dma_buffer->used + bytes >
mmesa->vertex_dma_buffer->total) {
LOCK_HARDWARE( mmesa );
mgaFlushVerticesLocked( mmesa );
/* In the case where the existing buffer does not have enough room,
* we need to flush it out to the hardware.
*/
if ( mmesa->vertex_dma_buffer != NULL ) {
mgaFlushVerticesLocked( mmesa );
}
mmesa->vertex_dma_buffer = mga_get_buffer_ioctl( mmesa );
UNLOCK_HARDWARE( mmesa );
}