feat(libSceAgc): implement sceAgcGetRegisterDefaultsInternal

Return the version 0 internal register defaults, the internal
counterpart of sceAgcGetRegisterDefaults.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

core/libs/prx/libSceAgc/Misc/src/RegisterDefaults.cpp

@@ -14,6 +14,10 @@ void* APS5_VABI sceAgcGetRegisterDefaults() {
     return Agc::Command::GetRegisterDefaults(0, false, __func__);
 }
 
+void* APS5_VABI sceAgcGetRegisterDefaultsInternal() {
+    return Agc::Command::GetRegisterDefaults(0, true, __func__);
+}
+
 void* APS5_VABI sceAgcGetRegisterDefaults2(std::uint32_t version) {
     return Agc::Command::GetRegisterDefaults(version, false, __func__);
 }

core/libs/prx/libSceAgc/tests/Commands.cpp

@@ -14,6 +14,9 @@ extern "C" std::uint32_t* APS5_VABI sceAgcDcbResetQueue(CommandBuffer* buf, std:
 extern "C" std::uint32_t* APS5_VABI sceAgcDcbSetFlip(CommandBuffer* buf, std::uint32_t handle, std::int32_t index, std::uint32_t mode, std::int64_t argument);
 extern "C" int APS5_VABI sceAgcSuspendPoint();
 extern "C" int APS5_VABI sceAgcInit(std::uint32_t version);
+extern "C" void* APS5_VABI sceAgcGetRegisterDefaults();
+extern "C" void* APS5_VABI sceAgcGetRegisterDefaultsInternal();
+extern "C" void* APS5_VABI sceAgcGetRegisterDefaults2Internal(std::uint32_t version);
 extern "C" int APS5_VABI sceAgcUnknownInitState(std::uint32_t* state, std::uint32_t version);
 extern "C" std::uint32_t* APS5_VABI sceAgcDcbDrawIndexAuto(CommandBuffer* buf, std::uint32_t indexCount, std::uint64_t modifier);
 extern "C" std::uint32_t* APS5_VABI sceAgcDcbDrawIndexIndirect(CommandBuffer* buf, std::uint32_t dataOffsetInBytes, std::uint64_t modifier);
@@ -351,6 +354,9 @@ void testDefaults() {
             check(first != nullptr && first == Agc::Command::GetRegisterDefaults(version, internal, __func__), "unstable register defaults pointer");
         }
     }
+    auto* internalDefaults = sceAgcGetRegisterDefaultsInternal();
+    check(internalDefaults != nullptr && internalDefaults == Agc::Command::GetRegisterDefaults(0, true, __func__) && internalDefaults == sceAgcGetRegisterDefaults2Internal(0), "internal register defaults are not the baseline internal table");
+    check(internalDefaults != sceAgcGetRegisterDefaults(), "internal register defaults returned the public table");
     expectFailure([] { Agc::Command::GetRegisterDefaults(14, false, __func__); });
     expectFailure([] { Agc::Command::GetRegisterDefaults(0xffffffffu, true, __func__); });
 }

docs/dev/TechnicalDebt.md

@@ -37,6 +37,7 @@ Throughout the project, every function at every stage either **does exactly what
 - PPSA23566 imports declared without parameters, signatures unknown: [sceAudioOut2UserGetSupportedAttributes](../../core/libs/prx/libSceAudioOut/src/AudioOut2System.cpp), [sceConvertKeycodeGetCharacterFromKeyboardData](../../core/libs/prx/libSceConvertKeycode/Export.cpp), [sceHttpSetCookieRecvCallback, sceHttpSetRedirectCallback, sceHttpsGetSslError, sceHttpsSetSslVersion](../../core/libs/prx/libSceHttp/Export.cpp), [sce::Json::MemAllocator::notifyError, sce::Json::Value::clear](../../core/libs/prx/libSceJson2/Export.cpp), [sceNetResolverAbort](../../core/libs/prx/libSceNet/Export.cpp), [sceNpCommerceDialogOpen2](../../core/libs/prx/libSceNpCommerce/Export.cpp), [sceNpEntitlementAccessGetPftFlag](../../core/libs/prx/libSceNpEntitlementAccess/Export.cpp), [sceProprietaryVoiceChatHelper{Initialize,Terminate,SetVoiceChatState,GetVoiceChatUsageState}](../../core/libs/prx/libSceProprietaryVoiceChatHelperPrx/Export.cpp), [sceVoice{GetResourceInfo,ResetPort,EnableChat,DisableChat}](../../core/libs/prx/libSceVoice/Export.cpp). Names from the shadPS4 aerolib NID list
 - [sceAvPlayerAddSource](../../core/libs/prx/libSceAvPlayer/src/Source.cpp) (libSceAvPlayer) - requests up to 4 additional decode-ahead video framebuffers from the memory replacement beyond `num_output_video_framebuffers` when memory is available; the console's internal buffering behaviour is unknown
 - [sceVideoOutRegisterBuffers2](../../core/libs/prx/libSceVideoOut/src/Buffer.cpp) (libSceVideoOut) - buffer option 8 (STRICT_COLORIMETRY) is presented as option 0, with the stored values unchanged; what the console changes for it is unknown. Only options 0 and 8 are accepted
+- [sceAgcGetRegisterDefaultsInternal](../../core/libs/prx/libSceAgc/Misc/src/RegisterDefaults.cpp) (libSceAgc) - returns the version 0 internal table, as `sceAgcGetRegisterDefaults` returns the version 0 public one; [OpenAGC](https://github.com/OpenAGC/OpenAGC/blob/main/src/game_compat.c) returns the table of the version passed to `sceAgcInit` instead, and null before it
 - [sceVideoOutRegisterBuffers2](../../core/libs/prx/libSceVideoOut/src/Buffer.cpp) (libSceVideoOut) - DCC buffers (category 1): `dcc_control` is taken as the CB_DCC_CONTROL block layout, only bits 0x10026c are accepted; `dcc_cb_register_clear_color` as the register-clear texel, only 32-bit values are presented
 - [sceVideoOutIsOutputSupported](../../core/libs/prx/libSceVideoOut/src/Output.cpp) (libSceVideoOut) - output mode encoding unknown: every mode except the default reports not supported (0), and `sceVideoOutConfigureOutput` returns `VIDEO_OUT_ERROR_UNAVAILABLE_OUTPUT_MODE` for it, instead of returning `VIDEO_OUT_ERROR_UNSUPPORTED_OUTPUT_MODE` for values the console does not define. PPSA12544 probes `0xd000000a` and selects 7680 pixels when it is supported, 3840 otherwise
 - [sceVideoOutOpen](../../core/libs/prx/libSceVideoOut/src/Output.cpp) (libSceVideoOut) - the open param's first word is unknown (PPSA21564 passes 16; it is not the byte size, since the affinity mask is at offset 16); only 16 is accepted. Whether the param continues past offset 24 is also unknown