Module: Mesa
Branch: staging/23.2
Commit: 90edcc41f835d21e48a371fcbd9e8e251ac8e454
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=90edcc41f835d21e48a371fcbd9e8e251ac8e454

Author: Samuel Pitoiset <[email protected]>
Date:   Tue Sep 26 16:37:28 2023 +0200

radv: stop skip emitting CB states when there is no color attachment

This is actually wrong. For example, if there is a DCC decompress
draw followed by a draw without any color attachments,
CB_COLOR_CONTROL.MODE is still CB_DCC_DECOMPRESS but it should be
CB_DISABLED. For some reasons, this hangs on RDNA3 (VM faults are also
reported through dmesg).

This fixes GPU hangs with Resident Evil 6, Star Wars The Old Republic
and probably more games on RDNA3.

Strictly speaking, I don't think this dynamic state optimization is
worth a try, even for other states, and I think it would be safer to
remove it completely.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9335
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/8327
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9878
Fixes: c08082e8615 ("radv: ignore all CB dynamic states when there is no color 
attachments")
Signed-off-by: Samuel Pitoiset <[email protected]>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25402>
(cherry picked from commit af2a96bb37b099067adb490d189399b46324b46f)

---

 .pick_status.json                       |  2 +-
 src/amd/vulkan/radv_pipeline_graphics.c | 59 ++++++++++++++++-----------------
 2 files changed, 30 insertions(+), 31 deletions(-)

diff --git a/.pick_status.json b/.pick_status.json
index e0bfa2da370..f5779415b93 100644
--- a/.pick_status.json
+++ b/.pick_status.json
@@ -3094,7 +3094,7 @@
         "description": "radv: stop skip emitting CB states when there is no 
color attachment",
         "nominated": true,
         "nomination_type": 1,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": "c08082e86151e88c1a0677914bc365910c82714a",
         "notes": null
diff --git a/src/amd/vulkan/radv_pipeline_graphics.c 
b/src/amd/vulkan/radv_pipeline_graphics.c
index 7747a007cf6..b87161d38eb 100644
--- a/src/amd/vulkan/radv_pipeline_graphics.c
+++ b/src/amd/vulkan/radv_pipeline_graphics.c
@@ -568,9 +568,6 @@ radv_pipeline_needed_dynamic_state(const struct radv_device 
*device, const struc
    if (!has_color_att || !radv_pipeline_is_blend_enabled(pipeline, state->cb))
       states &= ~RADV_DYNAMIC_BLEND_CONSTANTS;
 
-   if (!has_color_att)
-      states &= ~RADV_DYNAMIC_CB_STATES;
-
    if (!(pipeline->active_stages & VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT))
       states &= ~(RADV_DYNAMIC_PATCH_CONTROL_POINTS | 
RADV_DYNAMIC_TESS_DOMAIN_ORIGIN);
 
@@ -1089,42 +1086,44 @@ radv_pipeline_init_dynamic_state(const struct 
radv_device *device, struct radv_g
       typed_memcpy(dynamic->vk.cb.blend_constants, state->cb->blend_constants, 
4);
    }
 
-   if (states & RADV_DYNAMIC_LOGIC_OP) {
-      if ((pipeline->dynamic_states & RADV_DYNAMIC_LOGIC_OP_ENABLE) || 
state->cb->logic_op_enable) {
-         dynamic->vk.cb.logic_op = 
si_translate_blend_logic_op(state->cb->logic_op);
+   if (radv_pipeline_has_color_attachments(state->rp)) {
+      if (states & RADV_DYNAMIC_LOGIC_OP) {
+         if ((pipeline->dynamic_states & RADV_DYNAMIC_LOGIC_OP_ENABLE) || 
state->cb->logic_op_enable) {
+            dynamic->vk.cb.logic_op = 
si_translate_blend_logic_op(state->cb->logic_op);
+         }
       }
-   }
 
-   if (states & RADV_DYNAMIC_COLOR_WRITE_ENABLE) {
-      dynamic->vk.cb.color_write_enables = state->cb->color_write_enables;
-   }
+      if (states & RADV_DYNAMIC_COLOR_WRITE_ENABLE) {
+         dynamic->vk.cb.color_write_enables = state->cb->color_write_enables;
+      }
 
-   if (states & RADV_DYNAMIC_LOGIC_OP_ENABLE) {
-      dynamic->vk.cb.logic_op_enable = state->cb->logic_op_enable;
-   }
+      if (states & RADV_DYNAMIC_LOGIC_OP_ENABLE) {
+         dynamic->vk.cb.logic_op_enable = state->cb->logic_op_enable;
+      }
 
-   if (states & RADV_DYNAMIC_COLOR_WRITE_MASK) {
-      for (unsigned i = 0; i < state->cb->attachment_count; i++) {
-         dynamic->vk.cb.attachments[i].write_mask = 
state->cb->attachments[i].write_mask;
+      if (states & RADV_DYNAMIC_COLOR_WRITE_MASK) {
+         for (unsigned i = 0; i < state->cb->attachment_count; i++) {
+            dynamic->vk.cb.attachments[i].write_mask = 
state->cb->attachments[i].write_mask;
+         }
       }
-   }
 
-   if (states & RADV_DYNAMIC_COLOR_BLEND_ENABLE) {
-      for (unsigned i = 0; i < state->cb->attachment_count; i++) {
-         dynamic->vk.cb.attachments[i].blend_enable = 
state->cb->attachments[i].blend_enable;
+      if (states & RADV_DYNAMIC_COLOR_BLEND_ENABLE) {
+         for (unsigned i = 0; i < state->cb->attachment_count; i++) {
+            dynamic->vk.cb.attachments[i].blend_enable = 
state->cb->attachments[i].blend_enable;
+         }
       }
-   }
 
-   if (states & RADV_DYNAMIC_COLOR_BLEND_EQUATION) {
-      for (unsigned i = 0; i < state->cb->attachment_count; i++) {
-         const struct vk_color_blend_attachment_state *att = 
&state->cb->attachments[i];
+      if (states & RADV_DYNAMIC_COLOR_BLEND_EQUATION) {
+         for (unsigned i = 0; i < state->cb->attachment_count; i++) {
+            const struct vk_color_blend_attachment_state *att = 
&state->cb->attachments[i];
 
-         dynamic->vk.cb.attachments[i].src_color_blend_factor = 
att->src_color_blend_factor;
-         dynamic->vk.cb.attachments[i].dst_color_blend_factor = 
att->dst_color_blend_factor;
-         dynamic->vk.cb.attachments[i].color_blend_op = att->color_blend_op;
-         dynamic->vk.cb.attachments[i].src_alpha_blend_factor = 
att->src_alpha_blend_factor;
-         dynamic->vk.cb.attachments[i].dst_alpha_blend_factor = 
att->dst_alpha_blend_factor;
-         dynamic->vk.cb.attachments[i].alpha_blend_op = att->alpha_blend_op;
+            dynamic->vk.cb.attachments[i].src_color_blend_factor = 
att->src_color_blend_factor;
+            dynamic->vk.cb.attachments[i].dst_color_blend_factor = 
att->dst_color_blend_factor;
+            dynamic->vk.cb.attachments[i].color_blend_op = att->color_blend_op;
+            dynamic->vk.cb.attachments[i].src_alpha_blend_factor = 
att->src_alpha_blend_factor;
+            dynamic->vk.cb.attachments[i].dst_alpha_blend_factor = 
att->dst_alpha_blend_factor;
+            dynamic->vk.cb.attachments[i].alpha_blend_op = att->alpha_blend_op;
+         }
       }
    }
 

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