GnmDriver: Clear context support (#567)

* gnmdriver: added support for gpu context reset

* shader_recompiler: minor validation fixes

* shader_recompiler: added `V_CMPX_GT_I32`

* shader_recompiler: fix for crash on inline sampler access

* compilation warnings and dead code elimination

* amdgpu: fix for registers addressing

* libraries: videoout: reduce logging pressure

* shader_recompiler: fix for devergence scope detection

src/video_core/amdgpu/default_context.cpp

@@ -0,0 +1,55 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/types.h"
+#include "video_core/amdgpu/liverpool.h"
+
+#include <array>
+
+namespace AmdGpu {
+
+// The following values are taken from fpPS4:
+// https://github.com/red-prig/fpPS4/blob/436b43064be4c78229500f3d3c054fc76639247d/chip/pm4_pfp.pas#L410
+//
+static constexpr std::array reg_array_default{
+    0x00000000u, 0x80000000u, 0x40004000u, 0xdeadbeefu, 0x00000000u, 0x40004000u, 0x00000000u,
+    0x40004000u, 0x00000000u, 0x40004000u, 0x00000000u, 0x40004000u, 0xaa99aaaau, 0x00000000u,
+    0xdeadbeefu, 0xdeadbeefu, 0x80000000u, 0x40004000u, 0x00000000u, 0x00000000u, 0x80000000u,
+    0x40004000u, 0x80000000u, 0x40004000u, 0x80000000u, 0x40004000u, 0x80000000u, 0x40004000u,
+    0x80000000u, 0x40004000u, 0x80000000u, 0x40004000u, 0x80000000u, 0x40004000u, 0x80000000u,
+    0x40004000u, 0x80000000u, 0x40004000u, 0x80000000u, 0x40004000u, 0x80000000u, 0x40004000u,
+    0x80000000u, 0x40004000u, 0x80000000u, 0x40004000u, 0x80000000u, 0x40004000u, 0x80000000u,
+    0x40004000u, 0x80000000u, 0x40004000u, 0x00000000u, 0x3f800000u, 0x00000000u, 0x3f800000u,
+    0x00000000u, 0x3f800000u, 0x00000000u, 0x3f800000u, 0x00000000u, 0x3f800000u, 0x00000000u,
+    0x3f800000u, 0x00000000u, 0x3f800000u, 0x00000000u, 0x3f800000u, 0x00000000u, 0x3f800000u,
+    0x00000000u, 0x3f800000u, 0x00000000u, 0x3f800000u, 0x00000000u, 0x3f800000u, 0x00000000u,
+    0x3f800000u, 0x00000000u, 0x3f800000u, 0x00000000u, 0x3f800000u, 0x00000000u, 0x3f800000u,
+    0x2a00161au,
+};
+
+void Liverpool::Regs::SetDefaults() {
+    std::memset(reg_array.data(), 0, reg_array.size() * sizeof(u32));
+
+    std::memcpy(&reg_array[ContextRegWordOffset + 0x80], reg_array_default.data(),
+                reg_array_default.size() * sizeof(u32));
+
+    // Individual context regs values
+    reg_array[ContextRegWordOffset + 0x000d] = 0x40004000u;
+    reg_array[ContextRegWordOffset + 0x01b6] = 0x00000002u;
+    reg_array[ContextRegWordOffset + 0x0204] = 0x00090000u;
+    reg_array[ContextRegWordOffset + 0x0205] = 0x00000004u;
+    reg_array[ContextRegWordOffset + 0x0295] = 0x00000100u;
+    reg_array[ContextRegWordOffset + 0x0296] = 0x00000080u;
+    reg_array[ContextRegWordOffset + 0x0297] = 0x00000002u;
+    reg_array[ContextRegWordOffset + 0x02aa] = 0x00001000u;
+    reg_array[ContextRegWordOffset + 0x02f7] = 0x00001000u;
+    reg_array[ContextRegWordOffset + 0x02f9] = 0x00000005u;
+    reg_array[ContextRegWordOffset + 0x02fa] = 0x3f800000u;
+    reg_array[ContextRegWordOffset + 0x02fb] = 0x3f800000u;
+    reg_array[ContextRegWordOffset + 0x02fc] = 0x3f800000u;
+    reg_array[ContextRegWordOffset + 0x02fd] = 0x3f800000u;
+    reg_array[ContextRegWordOffset + 0x0316] = 0x0000000eu;
+    reg_array[ContextRegWordOffset + 0x0317] = 0x00000010u;
+}
+
+} // namespace AmdGpu

src/video_core/amdgpu/liverpool.cpp

@@ -216,6 +216,7 @@ Liverpool::Task Liverpool::ProcessGraphics(std::span<const u32> dcb, std::span<c
             break;
         }
         case PM4ItOpcode::ClearState: {
+            regs.SetDefaults();
             break;
         }
         case PM4ItOpcode::SetConfigReg: {

src/video_core/amdgpu/liverpool.h

@@ -1017,6 +1017,8 @@ struct Liverpool {
             }
             return nullptr;
         }
+
+        void SetDefaults();
     };
 
     Regs regs{};