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Split i915 textured video commands to fit into batch buffers. 

i915 textured video commands are quite long, but must be contained in the
same batch buffer as the 3D setup commands. When the number of clip rects
for the video becomes too large for the associated commands to fit in the
same batch buffer, this change breaks the sequence into pieces, ensuring
that each batch contains the necessary setup sequence.

Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Keith Packard 2009-05-01 18:34:43 -07:00
parent e5e0fb846b
commit 8255cca2c9
1 changed files with 15 additions and 3 deletions
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18
src/i915_video.c
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@ -50,7 +50,8 @@ I915DisplayVideoTextured(ScrnInfoPtr pScrn, I830PortPrivPtr pPriv, int id,
I830Ptr pI830 = I830PTR(pScrn);
uint32_t format, ms3, s5;
BoxPtr pbox = REGION_RECTS(dstRegion);
int nbox = REGION_NUM_RECTS(dstRegion);
int nbox_total = REGION_NUM_RECTS(dstRegion);
int nbox_this_time;
int dxo, dyo, pix_xoff, pix_yoff;
Bool planar;
@ -73,7 +74,17 @@ I915DisplayVideoTextured(ScrnInfoPtr pScrn, I830PortPrivPtr pPriv, int id,
return;
}
intel_batch_start_atomic(pScrn, 200 + 20 * nbox);
#define BYTES_FOR_BOXES(n) ((200 + (n) * 20) * 4)
#define BOXES_IN_BYTES(s) ((((s)/4) - 200) / 20)
#define BATCH_BYTES(p) ((p)->batch_bo->size - 16)
while (nbox_total) {
nbox_this_time = nbox_total;
if (BYTES_FOR_BOXES(nbox_this_time) > BATCH_BYTES(pI830))
nbox_this_time = BOXES_IN_BYTES(BATCH_BYTES(pI830));
nbox_total -= nbox_this_time;
intel_batch_start_atomic(pScrn, 200 + 20 * nbox_this_time);
IntelEmitInvarientState(pScrn);
pI830->last_3d = LAST_3D_VIDEO;
@ -366,7 +377,7 @@ I915DisplayVideoTextured(ScrnInfoPtr pScrn, I830PortPrivPtr pPriv, int id,
dxo = dstRegion->extents.x1;
dyo = dstRegion->extents.y1;
while (nbox--)
while (nbox_this_time--)
{
int box_x1 = pbox->x1;
int box_y1 = pbox->y1;
@ -415,5 +426,6 @@ I915DisplayVideoTextured(ScrnInfoPtr pScrn, I830PortPrivPtr pPriv, int id,
}
intel_batch_end_atomic(pScrn);
}
}