disable fwht shader on Intel Windows due to driver bug

0cc4m · 0cc4m · commit e6d79f129858 · 2026-06-02T08:40:17.000+02:00
diff --git a/ggml/src/ggml-vulkan/ggml-vulkan.cpp b/ggml/src/ggml-vulkan/ggml-vulkan.cpp
@@ -5047,7 +5047,8 @@ static void ggml_vk_load_shaders(vk_device& device) {
             }
             ++idx;
         }
-    } else {
+    } else if (device->driver_id != vk::DriverId::eIntelProprietaryWindows) {
+        // Disabled on Intel Windows due to a driver bug: https://github.com/ggml-org/llama.cpp/pull/23964#issuecomment-4598226147
         int idx = 0;
         for (uint32_t n : {64, 128, 256, 512}) {
             const uint32_t block_size = std::min(device->subgroup_size, n);

Original file line number	Diff line number	Diff line change
`@@ -5047,7 +5047,8 @@ static void ggml_vk_load_shaders(vk_device& device) {`
`5047`	`5047`	`}`
`5048`	`5048`	`++idx;`
`5049`	`5049`	`}`
`5050`		`- } else {`
	`5050`	`+ } else if (device->driver_id != vk::DriverId::eIntelProprietaryWindows) {`
	`5051`	`+ // Disabled on Intel Windows due to a driver bug: https://github.com/ggml-org/llama.cpp/pull/23964#issuecomment-4598226147`
`5051`	`5052`	`int idx = 0;`
`5052`	`5053`	`for (uint32_t n : {64, 128, 256, 512}) {`
`5053`	`5054`	`const uint32_t block_size = std::min(device->subgroup_size, n);`