Mesa (master): radv: Fix uninitialized variable in renderpass.

[GitLab Mirror]

Module: Mesa
Branch: master
Commit: 18fe130ec9e07213c5b4e1e46232e3c3c1835057
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=18fe130ec9e07213c5b4e1e46232e3c3c1835057

Author: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
Date:   Fri Jul 24 21:56:04 2020 +0200

radv: Fix uninitialized variable in renderpass.

Fixes some dEQP-VK.renderpass2.* flakes. Valgrind:

Test case 'dEQP-VK.renderpass2.dedicated_allocation.attachment.8.724'..
==754520== Conditional jump or move depends on uninitialised value(s)
==754520==    at 0x575B21C: radv_layout_is_htile_compressed (radv_image.c:1690)
==754520==    by 0x572F470: radv_handle_depth_image_transition (radv_cmd_buffer.c:5855)
==754520==    by 0x572F2F2: radv_handle_image_transition (radv_cmd_buffer.c:6123)
==754520==    by 0x572EEC6: radv_handle_subpass_image_transition (radv_cmd_buffer.c:3385)
==754520==    by 0x572A104: radv_cmd_buffer_begin_subpass (radv_cmd_buffer.c:4843)
==754520==    by 0x572A007: radv_CmdBeginRenderPass (radv_cmd_buffer.c:4913)
==754520==    by 0x572A197: radv_CmdBeginRenderPass2 (radv_cmd_buffer.c:4921)

Why false?

A renderloop happens when the same attachment is both used as input
attachment and output (color, ds) attachment in a subpass. Of course
this doesn't happen outside of a renderpass and hence we can initialize
it to false at the start of the renderpass.

Fixes: 66131ceb8bc "radv: Pass through render loop detection to internal layout decisions."
Reviewed-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Reviewed-by: Daniel Schürmann <daniel at schuermann.dev>
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3074
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6068>

---

 src/amd/vulkan/radv_cmd_buffer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/amd/vulkan/radv_cmd_buffer.c b/src/amd/vulkan/radv_cmd_buffer.c
index 4130a62d3f9..0e6a310cf8e 100644
--- a/src/amd/vulkan/radv_cmd_buffer.c
+++ b/src/amd/vulkan/radv_cmd_buffer.c
@@ -3548,6 +3548,7 @@ radv_cmd_state_setup_attachments(struct radv_cmd_buffer *cmd_buffer,
 		}
 
 		state->attachments[i].current_layout = att->initial_layout;
+		state->attachments[i].current_in_render_loop = false;
 		state->attachments[i].current_stencil_layout = att->stencil_initial_layout;
 		state->attachments[i].sample_location.count = 0;