diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2011-02-10 20:25:51 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-02-21 12:59:35 +0000 |
| commit | 8d68a90e225d831a395ba788e425cb717eec1f9a (patch) | |
| tree | 1c46eb19125ebbb205625783dd184e0489231d01 /src/mesa/drivers/dri/intel/intel_context.h | |
| parent | 3f55683927278e57f3ef8a151d15f4cffdc060dc (diff) | |
intel: use pwrite for batch
It's faster. Not only is the memcpy more efficiently performed in the
kernel (making up for the system call overhead), but by not using mmap
we remove the greater overhead of tracking the vma of every batch.
And it means we can read back from the batch buffer without incurring
the cost of a uncached read through the GTT.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_context.h')
| -rw-r--r-- | src/mesa/drivers/dri/intel/intel_context.h | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_context.h b/src/mesa/drivers/dri/intel/intel_context.h index 0ea273837d..bf2a0b4ead 100644 --- a/src/mesa/drivers/dri/intel/intel_context.h +++ b/src/mesa/drivers/dri/intel/intel_context.h @@ -169,7 +169,27 @@ struct intel_context int urb_size; - struct intel_batchbuffer *batch; + struct intel_batchbuffer { + drm_intel_bo *bo; + + uint16_t used; + uint16_t reserved_space; + uint32_t map[8192]; +#define BATCH_SZ (8192*sizeof(uint32_t)) + + uint32_t state_batch_offset; + +#ifdef DEBUG + /** Tracking of BEGIN_BATCH()/OUT_BATCH()/ADVANCE_BATCH() debugging */ + struct { + uint16_t total; + uint16_t start_ptr; + } emit; +#endif + + bool is_blit; + } batch; + drm_intel_bo *first_post_swapbuffers_batch; GLboolean need_throttle; GLboolean no_batch_wrap; @@ -177,9 +197,9 @@ struct intel_context struct { GLuint id; + uint32_t start_ptr; /**< for i8xx */ uint32_t primitive; /**< Current hardware primitive type */ void (*flush) (struct intel_context *); - GLubyte *start_ptr; /**< for i8xx */ drm_intel_bo *vb_bo; uint8_t *vb; unsigned int start_offset; /**< Byte offset of primitive sequence */ |