From 4feada1bf4e2cb14f1be4f35bb789b8902e88926 Mon Sep 17 00:00:00 2001
From: Valentin Popov <valentin@popov.link>
Date: Sat, 18 Jul 2026 08:40:40 +0400
Subject: feat(vulkan): add alpha test shader path

---
 adapters/fparkan-render-vulkan/src/ffi/smoke.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'adapters/fparkan-render-vulkan/src/ffi/smoke.rs')

diff --git a/adapters/fparkan-render-vulkan/src/ffi/smoke.rs b/adapters/fparkan-render-vulkan/src/ffi/smoke.rs
index 92db1a0..4862ca0 100644
--- a/adapters/fparkan-render-vulkan/src/ffi/smoke.rs
+++ b/adapters/fparkan-render-vulkan/src/ffi/smoke.rs
@@ -678,6 +678,14 @@ impl VulkanSmokeRenderer {
                     std::slice::from_ref(descriptor_set),
                     &[],
                 );
+                let alpha_cutoff = range.alpha_test_cutoff().to_ne_bytes();
+                device.device().cmd_push_constants(
+                    command_buffer,
+                    resources.pipeline_layout,
+                    vk::ShaderStageFlags::FRAGMENT,
+                    0,
+                    &alpha_cutoff,
+                );
                 device.device().cmd_draw_indexed(
                     command_buffer,
                     range.index_count,
-- 
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