mesa/SOURCES/lavapipe-disable-env-var.patch

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diff -up mesa-21.3.0/src/gallium/frontends/lavapipe/lvp_device.cdma mesa-21.3.0/src/gallium/frontends/lavapipe/lvp_device.c
--- mesa-21.3.0/src/gallium/frontends/lavapipe/lvp_device.cdma 2021-11-18 06:16:20.000000000 +1000
+++ mesa-21.3.0/src/gallium/frontends/lavapipe/lvp_device.c 2021-11-18 07:03:17.652283186 +1000
@@ -213,6 +213,9 @@ VKAPI_ATTR VkResult VKAPI_CALL lvp_Creat
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if (pAllocator == NULL)
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pAllocator = vk_default_allocator();
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+ if (!getenv("RH_SW_VULKAN"))
+ return VK_ERROR_INITIALIZATION_FAILED;
+
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instance = vk_zalloc(pAllocator, sizeof(*instance), 8,
VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
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if (!instance)