From 39db6731c056f19793a901613db61ce7f3d29021 Mon Sep 17 00:00:00 2001
From: Evan Tang <etang@codeweavers.com>
Date: Wed, 2 Jul 2025 16:23:51 -0500
Subject: [PATCH] vkd3d: Mask colour writes on graphics pipelines without
 fragment shaders.

Vulkan leaves the contents of colour attachments undefined in this case.
---
 libs/vkd3d/state.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libs/vkd3d/state.c b/libs/vkd3d/state.c
index 0a5bd1122..517354c90 100644
--- a/libs/vkd3d/state.c
+++ b/libs/vkd3d/state.c
@@ -3401,6 +3401,11 @@ static HRESULT d3d12_pipeline_state_init_graphics(struct d3d12_pipeline_state *s
 
         if (!desc->ps.pShaderBytecode)
         {
+            for (i = 0; i < rt_count; i++)
+            {
+                graphics->blend_attachments[i].colorWriteMask = 0;
+            }
+
             if (FAILED(hr = create_shader_stage(device, &graphics->stages[graphics->stage_count],
                     VK_SHADER_STAGE_FRAGMENT_BIT, &default_ps, NULL)))
                 goto fail;