Mesa (master): nvc0: expose ARB_compute_variable_group_size
Samuel Pitoiset
hakzsam at kemper.freedesktop.org
Thu Oct 6 22:25:22 UTC 2016
Module: Mesa
Branch: master
Commit: 56a0bed2c18e45da3808b0bc74a53a20d2c8e8f2
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=56a0bed2c18e45da3808b0bc74a53a20d2c8e8f2
Author: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Date: Sat Sep 10 16:45:32 2016 +0200
nvc0: expose ARB_compute_variable_group_size
Only expose 512 threads/block on Fermi to not be limited by
32 GPRs/thread.
v4: - use 512 threads on Fermi, 1024 on Kepler+
Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
---
src/gallium/drivers/nouveau/nvc0/nvc0_screen.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
index df6c6af..afcb08b 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -448,6 +448,12 @@ nvc0_screen_get_compute_param(struct pipe_screen *pscreen,
RET(((uint64_t []) { 1024, 1024, 64 }));
case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
RET((uint64_t []) { 1024 });
+ case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
+ if (obj_class >= NVE4_COMPUTE_CLASS) {
+ RET((uint64_t []) { 1024 });
+ } else {
+ RET((uint64_t []) { 512 });
+ }
case PIPE_COMPUTE_CAP_MAX_GLOBAL_SIZE: /* g[] */
RET((uint64_t []) { 1ULL << 40 });
case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE: /* s[] */
@@ -478,8 +484,6 @@ nvc0_screen_get_compute_param(struct pipe_screen *pscreen,
RET((uint32_t []) { 512 }); /* FIXME: arbitrary limit */
case PIPE_COMPUTE_CAP_ADDRESS_BITS:
RET((uint32_t []) { 64 });
- case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
- RET((uint64_t []) { 0 });
default:
return 0;
}
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