diff options
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state_draw.c | 60 |
1 files changed, 53 insertions, 7 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c index 141dd8f7526..1ff1547efe7 100644 --- a/src/gallium/drivers/radeonsi/si_state_draw.c +++ b/src/gallium/drivers/radeonsi/si_state_draw.c @@ -914,13 +914,59 @@ static void si_get_draw_start_count(struct si_context *sctx, unsigned *start, unsigned *count) { if (info->indirect) { - struct r600_resource *indirect = - (struct r600_resource*)info->indirect; - int *data = r600_buffer_map_sync_with_rings(&sctx->b, - indirect, PIPE_TRANSFER_READ); - data += info->indirect_offset/sizeof(int); - *start = data[2]; - *count = data[0]; + unsigned indirect_count; + struct pipe_transfer *transfer; + unsigned begin, end; + unsigned map_size; + unsigned *data; + + if (info->indirect_params) { + data = pipe_buffer_map_range(&sctx->b.b, + info->indirect_params, + info->indirect_params_offset, + sizeof(unsigned), + PIPE_TRANSFER_READ, &transfer); + + indirect_count = *data; + + pipe_buffer_unmap(&sctx->b.b, transfer); + } else { + indirect_count = info->indirect_count; + } + + if (!indirect_count) { + *start = *count = 0; + return; + } + + map_size = (indirect_count - 1) * info->indirect_stride + 3 * sizeof(unsigned); + data = pipe_buffer_map_range(&sctx->b.b, info->indirect, + info->indirect_offset, map_size, + PIPE_TRANSFER_READ, &transfer); + + begin = UINT_MAX; + end = 0; + + for (unsigned i = 0; i < indirect_count; ++i) { + unsigned count = data[0]; + unsigned start = data[2]; + + if (count > 0) { + begin = MIN2(begin, start); + end = MAX2(end, start + count); + } + + data += info->indirect_stride / sizeof(unsigned); + } + + pipe_buffer_unmap(&sctx->b.b, transfer); + + if (begin < end) { + *start = begin; + *count = end - begin; + } else { + *start = *count = 0; + } } else { *start = info->start; *count = info->count; |