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r200: make use of DMA buffers for Elts a lot better.

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This allows us to return the unused portion of the dma buffer
to the allocator instead of wasting nearly 16k a pop.
This commit is contained in:
Dave Airlie 2009-06-26 15:05:02 +10:00
parent db54579628
commit 0952645fe0
3 changed files with 19 additions and 16 deletions
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15
src/mesa/drivers/dri/r200/r200_cmdbuf.c
View file

@ -213,6 +213,9 @@ void r200FlushElts(GLcontext *ctx)
radeon_bo_unref(rmesa->radeon.tcl.elt_dma_bo);
rmesa->radeon.tcl.elt_dma_bo = NULL;
if (R200_ELT_BUF_SZ > elt_used)
radeonReturnDmaRegion(rmesa, R200_ELT_BUF_SZ - elt_used);
if (R200_DEBUG & DEBUG_SYNC) {
fprintf(stderr, "%s: Syncing\n", __FUNCTION__);
radeonFinish( rmesa->radeon.glCtx );
@ -233,21 +236,13 @@ GLushort *r200AllocEltsOpenEnded( r200ContextPtr rmesa,
radeonEmitState(&rmesa->radeon);
rmesa->radeon.tcl.elt_dma_bo = radeon_bo_open(rmesa->radeon.radeonScreen->bom,
0, R200_ELT_BUF_SZ, 4,
RADEON_GEM_DOMAIN_GTT, 0);
rmesa->radeon.tcl.elt_dma_offset = 0;
radeonAllocDmaRegion(&rmesa->radeon, &rmesa->radeon.tcl.elt_dma_bo,
&rmesa->radeon.tcl.elt_dma_offset, R200_ELT_BUF_SZ, 4);
rmesa->tcl.elt_used = min_nr * 2;
radeon_validate_bo(&rmesa->radeon, rmesa->radeon.tcl.elt_dma_bo,
RADEON_GEM_DOMAIN_GTT, 0);
if (radeon_revalidate_bos(rmesa->radeon.glCtx) == GL_FALSE)
fprintf(stderr,"failure to revalidate BOs - badness\n");
radeon_bo_map(rmesa->radeon.tcl.elt_dma_bo, 1);
retval = rmesa->radeon.tcl.elt_dma_bo->ptr + rmesa->radeon.tcl.elt_dma_offset;
if (R200_DEBUG & DEBUG_PRIMS)
fprintf(stderr, "%s: header prim %x \n",
__FUNCTION__, primitive);

19
src/mesa/drivers/dri/radeon/radeon_dma.c
View file

@ -167,7 +167,7 @@ void radeonRefillCurrentDmaRegion(radeonContextPtr rmesa, int size)
size = MAX2(size, MAX_DMA_BUF_SZ);
if (RADEON_DEBUG & (DEBUG_IOCTL | DEBUG_DMA))
fprintf(stderr, "%s\n", __FUNCTION__);
fprintf(stderr, "%s %d\n", __FUNCTION__, rmesa->dma.nr_released_bufs);
if (rmesa->dma.flush) {
rmesa->dma.flush(rmesa->glCtx);
@ -178,11 +178,7 @@ void radeonRefillCurrentDmaRegion(radeonContextPtr rmesa, int size)
rmesa->dma.nr_released_bufs = 0;
}
if (rmesa->dma.current) {
radeon_bo_unmap(rmesa->dma.current);
radeon_bo_unref(rmesa->dma.current);
rmesa->dma.current = 0;
}
radeonReleaseDmaRegion(rmesa);
again_alloc:
rmesa->dma.current = radeon_bo_open(rmesa->radeonScreen->bom,
@ -244,6 +240,17 @@ void radeonAllocDmaRegion(radeonContextPtr rmesa,
assert(rmesa->dma.current_used <= rmesa->dma.current->size);
}
void radeonReturnDmaRegion(radeonContextPtr rmesa, int return_bytes)
{
if (!rmesa->dma.current)
return;
if (RADEON_DEBUG & DEBUG_IOCTL)
fprintf(stderr, "%s %d\n", __FUNCTION__, return_bytes);
rmesa->dma.current_used -= return_bytes;
rmesa->dma.current_vertexptr = rmesa->dma.current_used;
}
void radeonReleaseDmaRegion(radeonContextPtr rmesa)
{
if (RADEON_DEBUG & DEBUG_IOCTL)

1
src/mesa/drivers/dri/radeon/radeon_dma.h
View file

@ -39,6 +39,7 @@ void radeonEmitVec12(uint32_t *out, GLvoid * data, int stride, int count);
void rcommon_emit_vector(GLcontext * ctx, struct radeon_aos *aos,
GLvoid * data, int size, int stride, int count);
void radeonReturnDmaRegion(radeonContextPtr rmesa, int return_bytes);
void radeonRefillCurrentDmaRegion(radeonContextPtr rmesa, int size);
void radeonAllocDmaRegion(radeonContextPtr rmesa,
struct radeon_bo **pbo, int *poffset,