moltenvk: remove DXVK compatibility patches

pkgs/misc/dxvk/default.nix

@@ -72,11 +72,6 @@ stdenvNoCC.mkDerivation (finalAttrs:
       done
     '';
 
-    # DXVK is patched to work with an unpatched MoltenVK. This function is kept to facilitate
-    # backporting of MoltenVK updates to 22.05. It should be removed for 22.11.
-    passthru.patchMoltenVK = moltenvk:
-      lib.warn "patchMoltenVK is deprecated, does nothing, and is no longer necessary. Use MoltenVK directly." moltenvk;
-
     meta = {
       description = "A Vulkan-based translation layer for Direct3D 9/10/11";
       homepage = "https://github.com/doitsujin/dxvk";

pkgs/os-specific/darwin/moltenvk/default.nix

@@ -43,10 +43,6 @@ stdenvNoCC.mkDerivation rec {
   # MoltenVK requires specific versions of its dependencies.
   # Pin them here except for cereal, which is four years old and has several CVEs.
   passthru = {
-    # The patch required to support DXVK may different from version to version. This should never
-    # be used except with DXVK, so there’s no package for it. To emphasize that this patch should
-    # never be used except with DXVK, `dxvk` provides a function for applying this patch.
-    dxvkPatch = ./dxvk-moltenvk-compat.patch;
     glslang = (glslang.overrideAttrs (old: {
       src = fetchFromGitHub {
         owner = "KhronosGroup";

pkgs/os-specific/darwin/moltenvk/dxvk-moltenvk-compat.patch

@@ -1,59 +0,0 @@
-Source: https://github.com/Gcenx/MoltenVK/commit/1f268bd45f6c928784d7cb90dedce382895f10ae
-
-Fake extensions for DXVK;
-- _features.geometryShader
-- _features.tessellationShader
-- _features.shaderCullDistance
-
-Enabled defaults;
-- MVK_ALLOW_METAL_FENCES=1
-- MVK_CONFIG_RESUME_LOST_DEVICE=1
----
- MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm  | 3 +++
- MoltenVK/MoltenVK/Utility/MVKEnvironment.h | 4 ++--
- 2 files changed, 5 insertions(+), 2 deletions(-)
-
-diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
-index bc6d19df..e1959c6e 100644
---- a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
-+++ b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
-@@ -1656,6 +1656,8 @@
-     _features.robustBufferAccess = true;  // XXX Required by Vulkan spec
-     _features.fullDrawIndexUint32 = true;
-     _features.independentBlend = true;
-+    _features.geometryShader = true;  // XXX Required by DXVK for D3D10
-+    _features.tessellationShader = true;  // XXX Required by DXVK for D3D11
-     _features.sampleRateShading = true;
-     _features.depthBiasClamp = true;
-     _features.fillModeNonSolid = true;
-@@ -1669,6 +1671,7 @@
-     _features.shaderUniformBufferArrayDynamicIndexing = true;
-     _features.shaderStorageBufferArrayDynamicIndexing = true;
-     _features.shaderClipDistance = true;
-+    _features.shaderCullDistance = true;  // XXX Required by DXVK for 10level9
-     _features.shaderInt16 = true;
-     _features.multiDrawIndirect = true;
-     _features.inheritedQueries = true;
-diff --git a/MoltenVK/MoltenVK/Utility/MVKEnvironment.h b/MoltenVK/MoltenVK/Utility/MVKEnvironment.h
-index 81d0defc..80c414d3 100644
---- a/MoltenVK/MoltenVK/Utility/MVKEnvironment.h
-+++ b/MoltenVK/MoltenVK/Utility/MVKEnvironment.h
-@@ -240,7 +240,7 @@ void mvkSetConfig(const MVKConfiguration& mvkConfig);
- #   define MVK_ALLOW_METAL_EVENTS    1
- #endif
- #ifndef MVK_ALLOW_METAL_FENCES
--#   define MVK_ALLOW_METAL_FENCES    0
-+#   define MVK_ALLOW_METAL_FENCES    1 // XXX Required by DXVK for Apple/NVidia GPUs (better FPS than CPU Emulation)
- #endif
- 
- /** Substitute Metal 2D textures for Vulkan 1D images. Enabled by default. */
-@@ -275,7 +275,7 @@ void mvkSetConfig(const MVKConfiguration& mvkConfig);
- 
- /** Resume MVKDevice VK_ERROR_DEVICE_LOST errors that do not cause MVKPhysicalDevice errors. Disabled by default. */
- #ifndef MVK_CONFIG_RESUME_LOST_DEVICE
--#   define MVK_CONFIG_RESUME_LOST_DEVICE    0
-+#   define MVK_CONFIG_RESUME_LOST_DEVICE    1
- #endif
- 
- /** Support Metal argument buffers. Disabled by default. */
-