diff --git a/src/graphics/guest_gpu/command_processor/pm4Handlers.cpp b/src/graphics/guest_gpu/command_processor/pm4Handlers.cpp
index 557302d2e..cd0247cd0 100644
--- a/src/graphics/guest_gpu/command_processor/pm4Handlers.cpp
+++ b/src/graphics/guest_gpu/command_processor/pm4Handlers.cpp
@@ -3644,6 +3644,12 @@ void GraphicsInitJmpTablesShIndirect() {
 	g_hw_sh_indirect_func[Pm4::SPI_SHADER_USER_DATA_ADDR_HI_GS] = [](KYTY_HW_SH_INDIRECT_ARGS) {
 		HwShIgnoreShaderRegister(cmd_offset, value);
 	};
+	g_hw_sh_indirect_func[Pm4::SPI_SHADER_PGM_CHKSUM_HS] = [](KYTY_HW_SH_INDIRECT_ARGS) {
+		HwShIgnoreShaderRegister(cmd_offset, value);
+	};
+	g_hw_sh_indirect_func[Pm4::SPI_SHADER_PGM_RSRC4_HS] = [](KYTY_HW_SH_INDIRECT_ARGS) {
+		HwShIgnoreShaderRegister(cmd_offset, value);
+	};
 	g_hw_sh_indirect_func[Pm4::SPI_GRAPHICS_SHADER_CONTROL_HS] = [](KYTY_HW_SH_INDIRECT_ARGS) {
 		HwShIgnoreShaderRegister(cmd_offset, value);
 	};
diff --git a/src/graphics/guest_gpu/pm4.h b/src/graphics/guest_gpu/pm4.h
index 7cce9ff63..0da1f65ad 100644
--- a/src/graphics/guest_gpu/pm4.h
+++ b/src/graphics/guest_gpu/pm4.h
@@ -834,8 +834,10 @@ constexpr uint32_t SPI_SHADER_USER_ACCUM_ESGS_0                   = 0xB2;
 constexpr uint32_t SPI_SHADER_USER_ACCUM_ESGS_3                   = 0xB5;
 constexpr uint32_t SPI_SHADER_PGM_LO_ES                           = 0xC8;
 constexpr uint32_t SPI_SHADER_PGM_HI_ES                           = 0xC9;
-// Retained only as an opaque AGC compiler-record tag; 0x100 is not a PS5 SH register.
+// Private AGC registers omitted from the public ShRegOffset enum. Shader binaries can still
+// include them in the ShRegister arrays submitted through SET_SH_REG_INDIRECT.
 constexpr uint32_t SPI_SHADER_PGM_CHKSUM_HS                       = 0x100;
+constexpr uint32_t SPI_SHADER_PGM_RSRC4_HS                        = 0x101;
 constexpr uint32_t SPI_SHADER_USER_DATA_ADDR_LO_HS                = 0x102;
 constexpr uint32_t SPI_SHADER_USER_DATA_ADDR_HI_HS                = 0x103;
 constexpr uint32_t SPI_GRAPHICS_SHADER_CONTROL_HS                 = 0x107;
diff --git a/tests/ShaderRecompilerComputeTests.cpp b/tests/ShaderRecompilerComputeTests.cpp
index 09b72c5d6..a93eaac6e 100644
--- a/tests/ShaderRecompilerComputeTests.cpp
+++ b/tests/ShaderRecompilerComputeTests.cpp
@@ -24556,10 +24556,10 @@ void CheckPm4NativeTargetGeometryRegisters(RenderContext &renderer) {
 
   // Removed GCN shader resource/checksum/queue registers. Numeric offsets keep
   // this check independent of the deleted legacy names.
-  constexpr std::array<uint32_t, 22> legacy_shader_slots{
+  constexpr std::array<uint32_t, 20> legacy_shader_slots{
       0x000u, 0x001u, 0x002u, 0x003u, 0x030u, 0x081u, 0x0b0u, 0x0bcu,
-      0x100u, 0x101u, 0x130u, 0x14au, 0x14bu, 0x20eu, 0x20fu, 0x210u,
-      0x211u, 0x216u, 0x217u, 0x219u, 0x21au, 0x27du,
+      0x130u, 0x14au, 0x14bu, 0x20eu, 0x20fu, 0x210u, 0x211u, 0x216u,
+      0x217u, 0x219u, 0x21au, 0x27du,
   };
   for (const auto offset : legacy_shader_slots) {
     legacy_slots_are_unhandled &= g_hw_sh_func[offset] == nullptr &&
@@ -24601,6 +24601,30 @@ void CheckPm4NativeTargetGeometryRegisters(RenderContext &renderer) {
   std::printf("[host]    %-32s ok\n", "Pm4NativeTargetGeometry");
 }
 
+void CheckPm4PrivateAgcShaderRegisters(RenderContext &renderer) {
+  GraphicsInitJmpTables();
+  CommandProcessor processor(renderer, 0);
+  std::array<uint32_t, 4> registers{
+      Pm4::SPI_SHADER_PGM_CHKSUM_HS, 0x12345678u,
+      Pm4::SPI_SHADER_PGM_RSRC4_HS, 0x87654321u,
+  };
+  const auto address = reinterpret_cast<uint64_t>(registers.data());
+  std::array<uint32_t, 5> command{
+      KYTY_PM4(5, Pm4::IT_SET_SH_REG_INDIRECT, Pm4::R_ZERO),
+      static_cast<uint32_t>(address), static_cast<uint32_t>(address >> 32u),
+      0x80000000u, 2u,
+  };
+  Pm4Execution execution;
+  const bool handlers_present =
+      g_hw_sh_indirect_func[Pm4::SPI_SHADER_PGM_CHKSUM_HS] != nullptr &&
+      g_hw_sh_indirect_func[Pm4::SPI_SHADER_PGM_RSRC4_HS] != nullptr;
+  Require("Pm4PrivateAgcShaderRegisters", "private HS register stream",
+          handlers_present &&
+              processor.Process(execution, command) == Pm4ProcessResult::Complete,
+          "private AGC HS registers were rejected by SET_SH_REG_INDIRECT");
+  std::printf("[host]    %-32s ok\n", "Pm4PrivateAgcShaderRegisters");
+}
+
 void CheckPm4DirectShaderRegisterFallback(RenderContext &renderer) {
   GraphicsInitJmpTables();
   CommandProcessor processor(renderer, 0);
@@ -25361,6 +25385,7 @@ int main(int argc, char **argv) {
   if (argc == 2 && std::strcmp(argv[1], "--context-state-only") == 0) {
     VulkanHarness vulkan;
     CheckPm4NativeTargetGeometryRegisters(vulkan.RuntimeRenderer());
+    CheckPm4PrivateAgcShaderRegisters(vulkan.RuntimeRenderer());
     CheckPm4BlendColorRegisterRanges(vulkan.RuntimeRenderer());
     CheckPm4PolygonOffsetRegisters(vulkan.RuntimeRenderer());
     CheckPm4ContextStateOperations(vulkan.RuntimeRenderer());
@@ -25541,6 +25566,7 @@ int main(int argc, char **argv) {
   CheckPm4SyntheticOcclusionCounterDump(vulkan.RuntimeRenderer());
   CheckPm4StencilInfoValueLane(vulkan.RuntimeRenderer());
   CheckPm4NativeTargetGeometryRegisters(vulkan.RuntimeRenderer());
+  CheckPm4PrivateAgcShaderRegisters(vulkan.RuntimeRenderer());
   CheckPm4DirectShaderRegisterFallback(vulkan.RuntimeRenderer());
   CheckPm4GuardBandRegisterRanges(vulkan.RuntimeRenderer());
   CheckPm4BlendColorRegisterRanges(vulkan.RuntimeRenderer());