D3D12: Get rid of DXIL.dll!

5 files changed, 258 insertions, 72 deletions

diff --git a/drivers/d3d12/dxil_hash.cpp b/drivers/d3d12/dxil_hash.cpp
new file mode 100644
index 0000000000..f94a4a30df
--- /dev/null
+++ b/drivers/d3d12/dxil_hash.cpp
@@ -0,0 +1,209 @@
+/**************************************************************************/
+/*  dxil_hash.cpp                                                         */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+// Based on the patched public domain implementation released by Microsoft here:
+// https://github.com/microsoft/hlsl-specs/blob/main/proposals/infra/INF-0004-validator-hashing.md
+
+#include "dxil_hash.h"
+
+#include <memory.h>
+
+#define S11 7
+#define S12 12
+#define S13 17
+#define S14 22
+#define S21 5
+#define S22 9
+#define S23 14
+#define S24 20
+#define S31 4
+#define S32 11
+#define S33 16
+#define S34 23
+#define S41 6
+#define S42 10
+#define S43 15
+#define S44 21
+
+static const BYTE padding[64] = {
+	0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+static void FF(UINT &a, UINT b, UINT c, UINT d, UINT x, UINT8 s, UINT ac) {
+	a += ((b & c) | (~b & d)) + x + ac;
+	a = ((a << s) | (a >> (32 - s))) + b;
+}
+
+static void GG(UINT &a, UINT b, UINT c, UINT d, UINT x, UINT8 s, UINT ac) {
+	a += ((b & d) | (c & ~d)) + x + ac;
+	a = ((a << s) | (a >> (32 - s))) + b;
+}
+
+static void HH(UINT &a, UINT b, UINT c, UINT d, UINT x, UINT8 s, UINT ac) {
+	a += (b ^ c ^ d) + x + ac;
+	a = ((a << s) | (a >> (32 - s))) + b;
+}
+
+static void II(UINT &a, UINT b, UINT c, UINT d, UINT x, UINT8 s, UINT ac) {
+	a += (c ^ (b | ~d)) + x + ac;
+	a = ((a << s) | (a >> (32 - s))) + b;
+}
+
+void compute_dxil_hash(const BYTE *pData, UINT byteCount, BYTE *pOutHash) {
+	UINT leftOver = byteCount & 0x3f;
+	UINT padAmount;
+	bool bTwoRowsPadding = false;
+	if (leftOver < 56) {
+		padAmount = 56 - leftOver;
+	} else {
+		padAmount = 120 - leftOver;
+		bTwoRowsPadding = true;
+	}
+	UINT padAmountPlusSize = padAmount + 8;
+	UINT state[4] = { 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476 };
+	UINT N = (byteCount + padAmountPlusSize) >> 6;
+	UINT offset = 0;
+	UINT NextEndState = bTwoRowsPadding ? N - 2 : N - 1;
+	const BYTE *pCurrData = pData;
+	for (UINT i = 0; i < N; i++, offset += 64, pCurrData += 64) {
+		UINT x[16];
+		const UINT *pX;
+		if (i == NextEndState) {
+			if (!bTwoRowsPadding && i == N - 1) {
+				UINT remainder = byteCount - offset;
+				x[0] = byteCount << 3;
+				memcpy((BYTE *)x + 4, pCurrData, remainder);
+				memcpy((BYTE *)x + 4 + remainder, padding, padAmount);
+				x[15] = 1 | (byteCount << 1);
+			} else if (bTwoRowsPadding) {
+				if (i == N - 2) {
+					UINT remainder = byteCount - offset;
+					memcpy(x, pCurrData, remainder);
+					memcpy((BYTE *)x + remainder, padding, padAmount - 56);
+					NextEndState = N - 1;
+				} else if (i == N - 1) {
+					x[0] = byteCount << 3;
+					memcpy((BYTE *)x + 4, padding + padAmount - 56, 56);
+					x[15] = 1 | (byteCount << 1);
+				}
+			}
+			pX = x;
+		} else {
+			pX = (const UINT *)pCurrData;
+		}
+
+		UINT a = state[0];
+		UINT b = state[1];
+		UINT c = state[2];
+		UINT d = state[3];
+
+		/* Round 1 */
+		FF(a, b, c, d, pX[0], S11, 0xd76aa478); /* 1 */
+		FF(d, a, b, c, pX[1], S12, 0xe8c7b756); /* 2 */
+		FF(c, d, a, b, pX[2], S13, 0x242070db); /* 3 */
+		FF(b, c, d, a, pX[3], S14, 0xc1bdceee); /* 4 */
+		FF(a, b, c, d, pX[4], S11, 0xf57c0faf); /* 5 */
+		FF(d, a, b, c, pX[5], S12, 0x4787c62a); /* 6 */
+		FF(c, d, a, b, pX[6], S13, 0xa8304613); /* 7 */
+		FF(b, c, d, a, pX[7], S14, 0xfd469501); /* 8 */
+		FF(a, b, c, d, pX[8], S11, 0x698098d8); /* 9 */
+		FF(d, a, b, c, pX[9], S12, 0x8b44f7af); /* 10 */
+		FF(c, d, a, b, pX[10], S13, 0xffff5bb1); /* 11 */
+		FF(b, c, d, a, pX[11], S14, 0x895cd7be); /* 12 */
+		FF(a, b, c, d, pX[12], S11, 0x6b901122); /* 13 */
+		FF(d, a, b, c, pX[13], S12, 0xfd987193); /* 14 */
+		FF(c, d, a, b, pX[14], S13, 0xa679438e); /* 15 */
+		FF(b, c, d, a, pX[15], S14, 0x49b40821); /* 16 */
+
+		/* Round 2 */
+		GG(a, b, c, d, pX[1], S21, 0xf61e2562); /* 17 */
+		GG(d, a, b, c, pX[6], S22, 0xc040b340); /* 18 */
+		GG(c, d, a, b, pX[11], S23, 0x265e5a51); /* 19 */
+		GG(b, c, d, a, pX[0], S24, 0xe9b6c7aa); /* 20 */
+		GG(a, b, c, d, pX[5], S21, 0xd62f105d); /* 21 */
+		GG(d, a, b, c, pX[10], S22, 0x2441453); /* 22 */
+		GG(c, d, a, b, pX[15], S23, 0xd8a1e681); /* 23 */
+		GG(b, c, d, a, pX[4], S24, 0xe7d3fbc8); /* 24 */
+		GG(a, b, c, d, pX[9], S21, 0x21e1cde6); /* 25 */
+		GG(d, a, b, c, pX[14], S22, 0xc33707d6); /* 26 */
+		GG(c, d, a, b, pX[3], S23, 0xf4d50d87); /* 27 */
+		GG(b, c, d, a, pX[8], S24, 0x455a14ed); /* 28 */
+		GG(a, b, c, d, pX[13], S21, 0xa9e3e905); /* 29 */
+		GG(d, a, b, c, pX[2], S22, 0xfcefa3f8); /* 30 */
+		GG(c, d, a, b, pX[7], S23, 0x676f02d9); /* 31 */
+		GG(b, c, d, a, pX[12], S24, 0x8d2a4c8a); /* 32 */
+
+		/* Round 3 */
+		HH(a, b, c, d, pX[5], S31, 0xfffa3942); /* 33 */
+		HH(d, a, b, c, pX[8], S32, 0x8771f681); /* 34 */
+		HH(c, d, a, b, pX[11], S33, 0x6d9d6122); /* 35 */
+		HH(b, c, d, a, pX[14], S34, 0xfde5380c); /* 36 */
+		HH(a, b, c, d, pX[1], S31, 0xa4beea44); /* 37 */
+		HH(d, a, b, c, pX[4], S32, 0x4bdecfa9); /* 38 */
+		HH(c, d, a, b, pX[7], S33, 0xf6bb4b60); /* 39 */
+		HH(b, c, d, a, pX[10], S34, 0xbebfbc70); /* 40 */
+		HH(a, b, c, d, pX[13], S31, 0x289b7ec6); /* 41 */
+		HH(d, a, b, c, pX[0], S32, 0xeaa127fa); /* 42 */
+		HH(c, d, a, b, pX[3], S33, 0xd4ef3085); /* 43 */
+		HH(b, c, d, a, pX[6], S34, 0x4881d05); /* 44 */
+		HH(a, b, c, d, pX[9], S31, 0xd9d4d039); /* 45 */
+		HH(d, a, b, c, pX[12], S32, 0xe6db99e5); /* 46 */
+		HH(c, d, a, b, pX[15], S33, 0x1fa27cf8); /* 47 */
+		HH(b, c, d, a, pX[2], S34, 0xc4ac5665); /* 48 */
+
+		/* Round 4 */
+		II(a, b, c, d, pX[0], S41, 0xf4292244); /* 49 */
+		II(d, a, b, c, pX[7], S42, 0x432aff97); /* 50 */
+		II(c, d, a, b, pX[14], S43, 0xab9423a7); /* 51 */
+		II(b, c, d, a, pX[5], S44, 0xfc93a039); /* 52 */
+		II(a, b, c, d, pX[12], S41, 0x655b59c3); /* 53 */
+		II(d, a, b, c, pX[3], S42, 0x8f0ccc92); /* 54 */
+		II(c, d, a, b, pX[10], S43, 0xffeff47d); /* 55 */
+		II(b, c, d, a, pX[1], S44, 0x85845dd1); /* 56 */
+		II(a, b, c, d, pX[8], S41, 0x6fa87e4f); /* 57 */
+		II(d, a, b, c, pX[15], S42, 0xfe2ce6e0); /* 58 */
+		II(c, d, a, b, pX[6], S43, 0xa3014314); /* 59 */
+		II(b, c, d, a, pX[13], S44, 0x4e0811a1); /* 60 */
+		II(a, b, c, d, pX[4], S41, 0xf7537e82); /* 61 */
+		II(d, a, b, c, pX[11], S42, 0xbd3af235); /* 62 */
+		II(c, d, a, b, pX[2], S43, 0x2ad7d2bb); /* 63 */
+		II(b, c, d, a, pX[9], S44, 0xeb86d391); /* 64 */
+
+		state[0] += a;
+		state[1] += b;
+		state[2] += c;
+		state[3] += d;
+	}
+
+	memcpy(pOutHash, state, 16);
+}
diff --git a/drivers/d3d12/dxil_hash.h b/drivers/d3d12/dxil_hash.h
new file mode 100644
index 0000000000..db8ee85a0d
--- /dev/null
+++ b/drivers/d3d12/dxil_hash.h
@@ -0,0 +1,39 @@
+/**************************************************************************/
+/*  dxil_hash.h                                                           */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef DXIL_HASH_H
+#define DXIL_HASH_H
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+void compute_dxil_hash(const BYTE *pData, UINT byteCount, BYTE *pOutHash);
+
+#endif // DXIL_HASH_H
diff --git a/drivers/d3d12/rendering_context_driver_d3d12.cpp b/drivers/d3d12/rendering_context_driver_d3d12.cpp
index c4cb99fcaa..d01ae5a73f 100644
--- a/drivers/d3d12/rendering_context_driver_d3d12.cpp
+++ b/drivers/d3d12/rendering_context_driver_d3d12.cpp
@@ -71,10 +71,6 @@ const GUID CLSID_D3D12DeviceFactoryGodot = { 0x114863bf, 0xc386, 0x4aee, { 0xb3,
 const GUID CLSID_D3D12DebugGodot = { 0xf2352aeb, 0xdd84, 0x49fe, { 0xb9, 0x7b, 0xa9, 0xdc, 0xfd, 0xcc, 0x1b, 0x4f } };
 const GUID CLSID_D3D12SDKConfigurationGodot = { 0x7cda6aca, 0xa03e, 0x49c8, { 0x94, 0x58, 0x03, 0x34, 0xd2, 0x0e, 0x07, 0xce } };
 
-extern "C" {
-char godot_nir_arch_name[32];
-}
-
 #ifdef PIX_ENABLED
 #if defined(__GNUC__)
 #define _MSC_VER 1800
@@ -86,10 +82,7 @@ char godot_nir_arch_name[32];
 #endif
 #endif
 
-RenderingContextDriverD3D12::RenderingContextDriverD3D12() {
-	CharString cs = Engine::get_singleton()->get_architecture_name().ascii();
-	memcpy(godot_nir_arch_name, (const char *)cs.get_data(), cs.size());
-}
+RenderingContextDriverD3D12::RenderingContextDriverD3D12() {}
 
 RenderingContextDriverD3D12::~RenderingContextDriverD3D12() {
 	if (lib_d3d12) {
diff --git a/drivers/d3d12/rendering_device_driver_d3d12.cpp b/drivers/d3d12/rendering_device_driver_d3d12.cpp
index a6bce1d79a..4f3cd56b07 100644
--- a/drivers/d3d12/rendering_device_driver_d3d12.cpp
+++ b/drivers/d3d12/rendering_device_driver_d3d12.cpp
@@ -36,6 +36,7 @@
 #include "thirdparty/zlib/zlib.h"
 
 #include "d3d12_godot_nir_bridge.h"
+#include "dxil_hash.h"
 #include "rendering_context_driver_d3d12.h"
 
 // No point in fighting warnings in Mesa.
@@ -59,7 +60,6 @@
 #pragma clang diagnostic ignored "-Wmissing-field-initializers"
 #endif
 
-#include "dxil_validator.h"
 #include "nir_spirv.h"
 #include "nir_to_dxil.h"
 #include "spirv_to_dxil.h"
@@ -2867,23 +2867,6 @@ static uint32_t SHADER_STAGES_BIT_OFFSET_INDICES[RenderingDevice::SHADER_STAGE_M
 	/* SHADER_STAGE_COMPUTE */ 2,
 };
 
-dxil_validator *RenderingDeviceDriverD3D12::_get_dxil_validator_for_current_thread() {
-	MutexLock lock(dxil_mutex);
-
-	int thread_idx = WorkerThreadPool::get_singleton()->get_thread_index();
-	if (dxil_validators.has(thread_idx)) {
-		return dxil_validators[thread_idx];
-	}
-
-#ifdef DEV_ENABLED
-	print_verbose("Creating DXIL validator for worker thread index " + itos(thread_idx));
-#endif
-
-	dxil_validator *dxil_validator = dxil_create_validator(nullptr);
-	dxil_validators.insert(thread_idx, dxil_validator);
-	return dxil_validator;
-}
-
 uint32_t RenderingDeviceDriverD3D12::_shader_patch_dxil_specialization_constant(
 		PipelineSpecializationConstantType p_type,
 		const void *p_value,
@@ -3006,40 +2989,20 @@ bool RenderingDeviceDriverD3D12::_shader_apply_specialization_constants(
 		ShaderStage stage = E.key;
 		if ((stages_re_sign_mask & (1 << stage))) {
 			Vector<uint8_t> &bytecode = E.value;
-			bool sign_ok = _shader_sign_dxil_bytecode(stage, bytecode);
-			ERR_FAIL_COND_V(!sign_ok, false);
+			_shader_sign_dxil_bytecode(stage, bytecode);
 		}
 	}
 
 	return true;
 }
 
-bool RenderingDeviceDriverD3D12::_shader_sign_dxil_bytecode(ShaderStage p_stage, Vector<uint8_t> &r_dxil_blob) {
-	dxil_validator *validator = _get_dxil_validator_for_current_thread();
-	if (!validator) {
-		if (is_in_developer_mode()) {
-			return true;
-		} else {
-			OS::get_singleton()->alert("Shader validation failed: DXIL.dll was not found, and developer mode is disabled.\n\nClick OK to exit.");
-			CRASH_NOW();
-		}
-	}
-
-	char *err = nullptr;
-	bool res = dxil_validate_module(validator, r_dxil_blob.ptrw(), r_dxil_blob.size(), &err);
-	if (!res) {
-		if (err) {
-			ERR_FAIL_COND_V_MSG(!res, false, "Shader signing invocation at stage " + String(SHADER_STAGE_NAMES[p_stage]) + " failed:\n" + String(err));
-		} else {
-			ERR_FAIL_COND_V_MSG(!res, false, "Shader signing invocation at stage " + String(SHADER_STAGE_NAMES[p_stage]) + " failed.");
-		}
-	}
-
-	return true;
+void RenderingDeviceDriverD3D12::_shader_sign_dxil_bytecode(ShaderStage p_stage, Vector<uint8_t> &r_dxil_blob) {
+	uint8_t *w = r_dxil_blob.ptrw();
+	compute_dxil_hash(w + 20, r_dxil_blob.size() - 20, w + 4);
 }
 
 String RenderingDeviceDriverD3D12::shader_get_binary_cache_key() {
-	return "D3D12-SV" + uitos(ShaderBinary::VERSION) + "-" + itos(shader_capabilities.shader_model) + (is_in_developer_mode() ? "dev" : "");
+	return "D3D12-SV" + uitos(ShaderBinary::VERSION) + "-" + itos(shader_capabilities.shader_model);
 }
 
 Vector<uint8_t> RenderingDeviceDriverD3D12::shader_compile_binary_from_spirv(VectorView<ShaderStageSPIRVData> p_spirv, const String &p_shader_name) {
@@ -3307,10 +3270,7 @@ Vector<uint8_t> RenderingDeviceDriverD3D12::shader_compile_binary_from_spirv(Vec
 			nir_to_dxil_options nir_to_dxil_options = {};
 			nir_to_dxil_options.environment = DXIL_ENVIRONMENT_VULKAN;
 			nir_to_dxil_options.shader_model_max = shader_model_d3d_to_dxil(shader_capabilities.shader_model);
-			dxil_validator *validator = _get_dxil_validator_for_current_thread();
-			if (validator) {
-				nir_to_dxil_options.validator_version_max = dxil_get_validator_version(validator);
-			}
+			nir_to_dxil_options.validator_version_max = NO_DXIL_VALIDATION;
 			nir_to_dxil_options.godot_nir_callbacks = &godot_nir_callbacks;
 
 			dxil_logger logger = {};
@@ -3361,8 +3321,7 @@ Vector<uint8_t> RenderingDeviceDriverD3D12::shader_compile_binary_from_spirv(Vec
 	for (KeyValue<ShaderStage, Vector<uint8_t>> &E : dxil_blobs) {
 		ShaderStage stage = E.key;
 		Vector<uint8_t> &dxil_blob = E.value;
-		bool sign_ok = _shader_sign_dxil_bytecode(stage, dxil_blob);
-		ERR_FAIL_COND_V(!sign_ok, Vector<uint8_t>());
+		_shader_sign_dxil_bytecode(stage, dxil_blob);
 	}
 
 	// Build the root signature.
@@ -6287,15 +6246,6 @@ RenderingDeviceDriverD3D12::RenderingDeviceDriverD3D12(RenderingContextDriverD3D
 }
 
 RenderingDeviceDriverD3D12::~RenderingDeviceDriverD3D12() {
-	{
-		MutexLock lock(dxil_mutex);
-		for (const KeyValue<int, dxil_validator *> &E : dxil_validators) {
-			if (E.value) {
-				dxil_destroy_validator(E.value);
-			}
-		}
-	}
-
 	glsl_type_singleton_decref();
 }
 
diff --git a/drivers/d3d12/rendering_device_driver_d3d12.h b/drivers/d3d12/rendering_device_driver_d3d12.h
index 92e8e494d4..34e4840247 100644
--- a/drivers/d3d12/rendering_device_driver_d3d12.h
+++ b/drivers/d3d12/rendering_device_driver_d3d12.h
@@ -79,7 +79,6 @@ using Microsoft::WRL::ComPtr;
 #define CUSTOM_INFO_QUEUE_ENABLED 0
 #endif
 
-struct dxil_validator;
 class RenderingContextDriverD3D12;
 
 // Design principles:
@@ -692,10 +691,6 @@ private:
 		uint32_t root_signature_crc = 0;
 	};
 
-	Mutex dxil_mutex;
-	HashMap<int, dxil_validator *> dxil_validators; // One per WorkerThreadPool thread used for shader compilation, plus one (-1) for all the other.
-
-	dxil_validator *_get_dxil_validator_for_current_thread();
 	uint32_t _shader_patch_dxil_specialization_constant(
 			PipelineSpecializationConstantType p_type,
 			const void *p_value,
@@ -706,7 +701,7 @@ private:
 			const ShaderInfo *p_shader_info,
 			VectorView<PipelineSpecializationConstant> p_specialization_constants,
 			HashMap<ShaderStage, Vector<uint8_t>> &r_final_stages_bytecode);
-	bool _shader_sign_dxil_bytecode(ShaderStage p_stage, Vector<uint8_t> &r_dxil_blob);
+	void _shader_sign_dxil_bytecode(ShaderStage p_stage, Vector<uint8_t> &r_dxil_blob);
 
 public:
 	virtual String shader_get_binary_cache_key() override final;