From 489bb5473b96a22ae445107297b66bc38b4701f7 Mon Sep 17 00:00:00 2001 From: Jan Vesely Date: Sat, 25 Jun 2016 22:06:09 -0400 Subject: [PATCH] r600,compute: Reserve vtx 3 for kernel arguments Using vtx 0 does not work for dynamic offsets. v2: add explanatory comment Signed-off-by: Jan Vesely Reviewed-by: Tom Stellard --- src/gallium/drivers/r600/evergreen_compute.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/src/gallium/drivers/r600/evergreen_compute.c b/src/gallium/drivers/r600/evergreen_compute.c index 6dd6e748a1b..b711786da29 100644 --- a/src/gallium/drivers/r600/evergreen_compute.c +++ b/src/gallium/drivers/r600/evergreen_compute.c @@ -369,7 +369,11 @@ static void evergreen_compute_upload_input(struct pipe_context *ctx, ctx->transfer_unmap(ctx, transfer); - /* ID=0 is reserved for the parameters */ + /* ID=0 and ID=3 are reserved for the parameters. + * LLVM will preferably use ID=0, but it does not work for dynamic + * indices. */ + evergreen_cs_set_vertex_buffer(rctx, 3, 0, + (struct pipe_resource*)shader->kernel_param); evergreen_cs_set_constant_buffer(rctx, 0, 0, input_size, (struct pipe_resource*)shader->kernel_param); } @@ -615,9 +619,9 @@ static void evergreen_set_compute_resources(struct pipe_context *ctx, start, count); for (unsigned i = 0; i < count; i++) { - /* The First three vertex buffers are reserved for parameters and + /* The First four vertex buffers are reserved for parameters and * global buffers. */ - unsigned vtx_id = 3 + i; + unsigned vtx_id = 4 + i; if (resources[i]) { struct r600_resource_global *buffer = (struct r600_resource_global*) -- 2.30.2