docs: add Fedora and Fedora Atomic (Bazzite) build instructions (#1372)

* docs: add Fedora and Fedora Atomic (Bazzite) build instructions

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SscrMzrvwrj17PJsfzqog9

* docs: note --nvidia for Distrobox on NVIDIA hosts

* docs: streamline Fedora build instructions

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: nmzik <Nmzik@mail.ru>

README.md

@@ -248,6 +248,43 @@ sources, so it needs network access; a fully sandboxed `nix build` would require
 inputs. A Vulkan 1.3 driver must be available at runtime (on NixOS,
 `hardware.graphics.enable = true`).
 
+### Building on Fedora and Fedora Atomic (Bazzite, Bluefin, Silverblue)
+
+On regular Fedora, install dependencies on the host. On Fedora Atomic variants such as Bazzite,
+Bluefin and Silverblue, use [Distrobox](https://distrobox.it/) and run the install and build steps
+inside the container. Keep the checkout in your home directory so it is shared with the container.
+Add `--nvidia` to the create command for hosts using the proprietary NVIDIA driver:
+
+```bash
+distrobox create --name kyty-build --image registry.fedoraproject.org/fedora:latest
+distrobox enter kyty-build
+```
+
+Install the toolchain, Qt 6 and SDL3 dependencies:
+
+```bash
+sudo dnf install -y \
+  clang lld ninja-build cmake git glslang python3 pkgconf-pkg-config \
+  mesa-libGL-devel libX11-devel libXcursor-devel libXext-devel libXfixes-devel \
+  libXi-devel libXrandr-devel libXScrnSaver-devel libXtst-devel libxkbcommon-devel \
+  alsa-lib-devel pulseaudio-libs-devel systemd-devel dbus-devel \
+  wayland-devel wayland-protocols-devel qt6-qtbase-devel
+```
+
+From the repository root, follow the launcher configure, build and install steps in
+[Building on Linux](#building-on-linux), omitting `-DCMAKE_PREFIX_PATH="$Qt6_DIR"`; CMake finds
+Fedora's packaged Qt 6 automatically.
+
+Run `./_Build/linux/install/launcher` on regular Fedora or inside the container. To launch a
+container build from the host, leave the container with `exit`, then run from the repository root:
+
+```bash
+distrobox enter kyty-build -- ./_Build/linux/install/launcher
+```
+
+Qt libraries and plugins are bundled. You can also launch directly on a Fedora Atomic host
+if its other system libraries are compatible with the container build.
+
 ### Building on macOS
 
 macOS builds target x86-64 and run under Rosetta 2 on Apple Silicon, so the PS5's x86-64 game

src/libs/agc.cpp

@@ -259,29 +259,6 @@ struct CommandBuffer {
 	void*     user_data;
 	uint32_t  reserved_dw;
 
-	void DbgDump() const {
-		if (!Config::GraphicsDebugDumpEnabled() ||
-		    Config::GetPrintfDirection() == Config::LogDirection::Silent) {
-			return;
-		}
-		static std::atomic<uint32_t> log_count {0};
-		if (log_count.fetch_add(1) >= 64) {
-			return;
-		}
-
-		LOGF("\t bottom      = 0x%016" PRIx64 "\n"
-		     "\t top         = 0x%016" PRIx64 "\n"
-		     "\t cursor_up   = 0x%016" PRIx64 "\n"
-		     "\t cursor_down = 0x%016" PRIx64 "\n"
-		     "\t callback    = 0x%016" PRIx64 "\n"
-		     "\t user_data   = 0x%016" PRIx64 "\n"
-		     "\t reserved_dw = %" PRIu32 "\n",
-		     reinterpret_cast<uint64_t>(bottom), reinterpret_cast<uint64_t>(top),
-		     reinterpret_cast<uint64_t>(cursor_up), reinterpret_cast<uint64_t>(cursor_down),
-		     reinterpret_cast<uint64_t>(callback), reinterpret_cast<uint64_t>(user_data),
-		     reserved_dw);
-	}
-
 	[[nodiscard]] KYTY_SYSV_ABI uint64_t GetAvailableSizeDW() const {
 		// Interpret the signed cursor distance as an unsigned 64-bit DWORD count.
 		const auto distance = static_cast<int64_t>(reinterpret_cast<uintptr_t>(cursor_down) -
@@ -302,7 +279,6 @@ struct CommandBuffer {
 				    "\t command buffer exhausted and has no grow callback: requested = %" PRIu32
 				    ", remaining = %" PRIu64 ", reserved_dw = %" PRIu32 "\n",
 				    num_dw, remaining, reserved_dw);
-				DbgDump();
 				return false;
 			}
 
@@ -312,7 +288,6 @@ struct CommandBuffer {
 				           "\t command buffer grow callback failed: requested = %" PRIu32
 				           ", remaining = %" PRIu64 ", reserved_dw = %" PRIu32 "\n",
 				           num_dw, remaining, reserved_dw);
-				DbgDump();
 				return false;
 			}
 			if (GetAvailableSizeDW() < num_dw) {
@@ -321,7 +296,6 @@ struct CommandBuffer {
 				           "requested = %" PRIu32 ", remaining = %" PRIu64
 				           ", reserved_dw = %" PRIu32 "\n",
 				           num_dw, GetAvailableSizeDW(), reserved_dw);
-				DbgDump();
 				return false;
 			}
 		}
@@ -1598,8 +1572,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbContextStateOp(CommandBuffer* buf, uint32_t operat
 		return nullptr;
 	}
 
-	buf->DbgDump();
-
 	uint32_t*  first  = nullptr;
 	const auto append = [&](uint32_t segment_size_dw) {
 		auto* segment = buf->AllocateDW(segment_size_dw);
@@ -1902,8 +1874,6 @@ uint32_t* KYTY_SYSV_ABI AgcCbSetShRegisterRangeDirect(CommandBuffer* buf, uint32
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(num_values + 2);
 
 	if (cmd == nullptr) {
@@ -1945,8 +1915,6 @@ uint32_t* KYTY_SYSV_ABI AgcCbSetShRegistersDirect(CommandBuffer*
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 	EXIT_NOT_IMPLEMENTED(regs == nullptr);
 
-	buf->DbgDump();
-
 	std::vector<ShaderRegister> local_regs(num_regs);
 	for (uint32_t i = 0; i < num_regs; i++) {
 		local_regs[i].offset = regs[i].offset;
@@ -2012,8 +1980,6 @@ uint32_t* KYTY_SYSV_ABI AgcCbSetUcRegistersDirect(CommandBuffer*
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 	EXIT_NOT_IMPLEMENTED(regs == nullptr);
 
-	buf->DbgDump();
-
 	// Original implementation stages register values in a temporary DWORD array. It reads each new run only
 	// after the preceding run has been allocated, so preserve that ordering around grow callbacks.
 	std::vector<uint32_t> values(num_regs);
@@ -2104,8 +2070,6 @@ uint32_t* KYTY_SYSV_ABI AgcCbReleaseMem(CommandBuffer* buf, uint8_t action, uint
 	                     data_sel != 5);
 	EXIT_NOT_IMPLEMENTED(interrupt > 4);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(8);
 
 	if (cmd == nullptr) {
@@ -2158,8 +2122,6 @@ uint32_t* KYTY_SYSV_ABI AgcAcbResetQueue(CommandBuffer* buf, uint32_t op) {
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 	EXIT_NOT_IMPLEMENTED((op & ~0x1c2u) != 0);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(2);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2180,8 +2142,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbResetQueue(CommandBuffer* buf, uint32_t op, uint32
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 	EXIT_NOT_IMPLEMENTED((op & ~0xfffu) != 0);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(2);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2203,8 +2163,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbWaitUntilSafeForRendering(CommandBuffer* buf,
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(7);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2257,8 +2215,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetWorkloadsActive(CommandBuffer* buf, uint32_t st
 		}
 	}
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(WORKLOAD_ACTIVE_PACKET_SIZE_DW);
 	if (cmd == nullptr) {
 		return nullptr;
@@ -2294,8 +2250,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetWorkloadComplete(CommandBuffer* buf, uint32_t s
 		}
 	}
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(WORKLOAD_COMPLETE_PACKET_SIZE_DW);
 	if (cmd == nullptr) {
 		return nullptr;
@@ -2319,8 +2273,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetShRegisterDirect(CommandBuffer* buf, ShaderRegi
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(3);
 
 	if (cmd == nullptr) {
@@ -2340,8 +2292,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetCxRegisterDirect(CommandBuffer* buf, ShaderRegi
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(3);
 
 	if (cmd == nullptr) {
@@ -2367,8 +2317,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetUcRegisterDirect(CommandBuffer* buf, ShaderRegi
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(3);
 
 	if (cmd == nullptr) {
@@ -2394,8 +2342,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetCxRegistersIndirect(CommandBuffer*
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(RegIndirectPacketSizeDw);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2423,8 +2369,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetShRegistersIndirect(CommandBuffer*
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(RegIndirectPacketSizeDw);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2453,8 +2397,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetUcRegistersIndirect(CommandBuffer*
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(RegIndirectPacketSizeDw);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2475,8 +2417,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetIndexSize(CommandBuffer* buf, uint8_t index_siz
 	     index_size, cache_policy);
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(3);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2496,8 +2436,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetIndexBuffer(CommandBuffer* buf, uint64_t index_
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 	EXIT_NOT_IMPLEMENTED((index_addr & 1u) != 0);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(3);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2516,8 +2454,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetIndexCount(CommandBuffer* buf, uint32_t index_c
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(2);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2537,8 +2473,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetNumInstances(CommandBuffer* buf, uint32_t num_i
 		return nullptr;
 	}
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(2);
 
 	if (cmd == nullptr) {
@@ -2635,8 +2569,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbDrawIndex(CommandBuffer* buf, uint32_t index_count
 	EXIT_NOT_IMPLEMENTED(index_addr == nullptr);
 	EXIT_NOT_IMPLEMENTED((reinterpret_cast<uint64_t>(index_addr) & 1u) != 0);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(6);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2678,8 +2610,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbDrawIndexMultiInstanced(CommandBuffer* buf, uint32
 	EXIT_NOT_IMPLEMENTED(object_ids == nullptr);
 	EXIT_NOT_IMPLEMENTED((reinterpret_cast<uint64_t>(index_addr) & 1u) != 0);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(9);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2747,8 +2677,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbDrawIndexAuto(CommandBuffer* buf, uint32_t index_c
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(3);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2777,8 +2705,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbDrawIndexOffset(CommandBuffer* buf, uint32_t index
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(5);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2808,8 +2734,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetBaseIndirectArgs(CommandBuffer* buf, uint32_t s
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(4);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2834,8 +2758,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbDrawIndexIndirect(CommandBuffer* buf, uint32_t dat
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(5);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2863,8 +2785,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbDrawIndirect(CommandBuffer* buf, uint32_t data_off
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(5);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -2901,8 +2821,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbDrawIndirectMulti(CommandBuffer*       buf,
 		return nullptr;
 	}
 
-	buf->DbgDump();
-
 	constexpr uint32_t draw_packet_size_dw = 10u;
 	constexpr uint32_t total_size_dw =
 	    AGC_INTERNAL_DATA_PACKET_SIZE_DW + draw_packet_size_dw +
@@ -2963,8 +2881,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbDrawIndexIndirectMulti(CommandBuffer*       buf,
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 	EXIT_NOT_IMPLEMENTED((count_indirect & ~1u) != 0);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(10);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -3013,8 +2929,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbDispatchIndirect(CommandBuffer* buf, uint32_t data
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(3);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -3046,8 +2960,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbEventWrite(CommandBuffer* buf, uint8_t event_type,
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 	EXIT_NOT_IMPLEMENTED(event_type > 0x3fu);
 
-	buf->DbgDump();
-
 	const bool addressed_event = ((event_type & 0xfeu) == 0x38u);
 	auto*      cmd             = buf->AllocateDW(addressed_event ? 4u : 2u);
 
@@ -3143,8 +3055,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbAcquireMem(CommandBuffer* buf, uint8_t engine, uin
 		}
 	}
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(8);
 
 	if (cmd == nullptr) {
@@ -3203,8 +3113,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbCondExec(CommandBuffer* buf, const volatile uint32
 		return nullptr;
 	}
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(5);
 
 	if (cmd == nullptr) {
@@ -3376,8 +3284,6 @@ uint32_t* KYTY_SYSV_ABI AgcAcbDispatchIndirect(CommandBuffer*       buf,
 		return nullptr;
 	}
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(4);
 
 	if (cmd == nullptr) {
@@ -3426,8 +3332,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbStallCommandBufferParser(CommandBuffer* buf) {
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(2);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);
@@ -3714,6 +3618,20 @@ int KYTY_SYSV_ABI AgcSetPacketPredication(uint32_t* packet, uint32_t predication
 	return OK;
 }
 
+int KYTY_SYSV_ABI AgcSetNop(uint32_t* packet) {
+	PRINT_NAME();
+
+	const auto size = AgcGetPacketSize(packet);
+
+	packet[0] = (packet[0] & 0xffff0003u) | (Pm4::IT_NOP << 8u);
+	// Prevent the disabled payload from being treated as an executable marker.
+	if (size > 1 && (packet[1] & 0xffff0000u) == 0x68750000u) {
+		packet[1] &= 0xffffu;
+	}
+
+	return OK;
+}
+
 int KYTY_SYSV_ABI AgcSetRangePredication(uint32_t* start, const volatile uint32_t* end,
                                          uint32_t predication) {
 	PRINT_NAME();
@@ -3833,8 +3751,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbWriteData(CommandBuffer* buf, uint8_t dst, uint8_t
 		return nullptr;
 	}
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(4 + num_dwords);
 
 	if (cmd == nullptr) {
@@ -3887,8 +3803,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbGetLodStats(CommandBuffer* buf, uint8_t cache_poli
 		return nullptr;
 	}
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(5);
 
 	if (cmd == nullptr) {
@@ -4091,8 +4005,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbWaitRegMem(CommandBuffer* buf, uint8_t size, uint8
 		           cache_policy);
 	}
 
-	buf->DbgDump();
-
 	auto address_value = reinterpret_cast<uint64_t>(address);
 	bool wait32        = (size == 0);
 	auto poll          = wait_reg_mem_poll_cycles_to_packet(poll_cycles);
@@ -4222,8 +4134,6 @@ uint32_t* KYTY_SYSV_ABI AgcDcbSetFlip(CommandBuffer* buf, uint32_t video_out_han
 
 	EXIT_NOT_IMPLEMENTED(buf == nullptr);
 
-	buf->DbgDump();
-
 	auto* cmd = buf->AllocateDW(6);
 
 	EXIT_NOT_IMPLEMENTED(cmd == nullptr);

src/libs/agc.h

@@ -270,6 +270,7 @@ uint32_t KYTY_SYSV_ABI  AgcGetPacketSize(uint32_t* packet);
 int KYTY_SYSV_ABI       AgcSetPacketPredication(uint32_t* packet, uint32_t predication);
 int KYTY_SYSV_ABI       AgcSetRangePredication(uint32_t* start, const volatile uint32_t* end,
                                                uint32_t predication);
+int KYTY_SYSV_ABI       AgcSetNop(uint32_t* packet);
 int KYTY_SYSV_ABI       AgcRewindPatchSetRewindState(uint32_t* cmd, uint8_t state);
 int KYTY_SYSV_ABI       AgcCondExecPatchSetEnd(uint32_t* cmd, const volatile uint32_t* buffer);
 int KYTY_SYSV_ABI       AgcCondExecPatchSetCommandAddress(uint32_t*                cmd,

src/libs/libAgcDriver.cpp

@@ -143,6 +143,7 @@ LIB_DEFINE(InitAgcDriver_1) {
 	LIB_FUNC("Lkf86B98qPc", Gen5::AgcGetPacketSize);
 	LIB_FUNC("w6Dj1VJt5qY", Gen5::AgcSetPacketPredication);
 	LIB_FUNC("n8vgpaQg6dA", Gen5::AgcSetRangePredication);
+	LIB_FUNC("K2mciNVxUCE", Gen5::AgcSetNop);
 	LIB_FUNC("i1jyy49AjXU", Gen5::AgcDcbWriteData);
 	LIB_FUNC("p9tI+yTvx68", Gen5::AgcDcbWriteDataGetSize);
 	LIB_FUNC("vuSXe69VILM", Gen5::AgcDcbGetLodStats);

tests/ShaderRecompilerComputeTests.cpp

@@ -42630,6 +42630,43 @@ void CheckPm4IndirectControlFlow(RenderContext &renderer) {
           Gen5::AgcCbNop(reinterpret_cast<Gen5::CommandBuffer*>(&payload_dcb), 3) == payload.data() &&
               payload == std::array<uint32_t, 3>{0xc0011000u, 0x12345678u, 0x9abcdef0u},
           "NOP emitter overwrote the caller's reserved payload");
+  alignas(8) uint64_t released = 0;
+  std::array<uint32_t, 20> disabled_commands{};
+  const auto disabled_write = write(&returned, 99);
+  std::copy(disabled_write.begin(), disabled_write.end(), disabled_commands.begin());
+  disabled_commands[5] = KYTY_PM4(2, Pm4::IT_NUM_INSTANCES, 0);
+  disabled_commands[6] = 0x68750123u;
+  CommandBufferLayout release_dcb{disabled_commands.data() + 7, disabled_commands.data() + 15,
+      disabled_commands.data() + 7, disabled_commands.data() + 15, nullptr, nullptr, 0};
+  auto* release = Gen5::AgcCbReleaseMem(
+      reinterpret_cast<Gen5::CommandBuffer*>(&release_dcb), 0x28, 0, 0, 0,
+      reinterpret_cast<const volatile Gen5::Label*>(&released), 2, 77, 0, 0, 0, 0);
+  const auto enabled_write = write(&selected, 88);
+  std::copy(enabled_write.begin(), enabled_write.end(), disabled_commands.begin() + 15);
+  const auto unpatched_commands = disabled_commands;
+  Require(name, "SetNop packets",
+          release == disabled_commands.data() + 7 &&
+              Gen5::AgcSetNop(disabled_commands.data()) == 0 &&
+              Gen5::AgcSetNop(disabled_commands.data() + 5) == 0 && Gen5::AgcSetNop(release) == 0 &&
+              disabled_commands[0] == ((disabled_write[0] & 0xffff00ffu) | (Pm4::IT_NOP << 8u)) &&
+              disabled_commands[5] == KYTY_PM4(2, Pm4::IT_NOP, Pm4::R_ZERO) &&
+              disabled_commands[6] == 0x123u &&
+              release[0] == KYTY_PM4(8, Pm4::IT_NOP, Pm4::R_ZERO) &&
+              unpatched_commands[7] == KYTY_PM4(8, Pm4::IT_NOP, Pm4::R_RELEASE_MEM) &&
+              Gen5::AgcGetPacketSize(disabled_commands.data()) == disabled_write.size() &&
+              Gen5::AgcGetPacketSize(disabled_commands.data() + 5) == 2 &&
+              Gen5::AgcGetPacketSize(release) == 8 &&
+              std::equal(disabled_commands.begin() + 1, disabled_commands.begin() + 5,
+                         unpatched_commands.begin() + 1) &&
+              std::equal(disabled_commands.begin() + 8, disabled_commands.end(),
+                         unpatched_commands.begin() + 8),
+          "SetNop changed a packet length, kept its operation or marker, or touched its payload");
+  selected = returned = 0;
+  Pm4Execution disabled_execution;
+  Require(name, "SetNop execution",
+          processor.Process(disabled_execution, disabled_commands) == Pm4ProcessResult::Complete &&
+              returned == 0 && released == 0 && selected == 88,
+          "a disabled packet still executed or hid the packet after it");
   const auto then_commands = write(&selected, 11);
   const auto else_commands = write(&selected, 33);
   const auto branch_suffix = write(&selected, 44);