Revert "nx2/ampere: implement ISBERD (0x923) and accept ISBEWR (0x927)"

This reverts commit d9e4ac8360b3b63b7ddba05757c87e867f9163fa.

1 files changed, 0 insertions, 30 deletions

diff --git a/src/shader_recompiler/frontend/ampere/lower_to_maxwell.h b/src/shader_recompiler/frontend/ampere/lower_to_maxwell.h
index b0888503e5..031f7fac75 100644
--- a/src/shader_recompiler/frontend/ampere/lower_to_maxwell.h
+++ b/src/shader_recompiler/frontend/ampere/lower_to_maxwell.h
@@ -2251,36 +2251,6 @@ inline LoweredProgram LowerToMaxwell(std::span<const Instruction> code) {
             main_exited = true;
             break;
         }
-        case 0x923: { // ISBERD: leitura do buffer de entrada de estagio (mapa/patch/primitiva/atributo).
-            // Layout Ampere (Mesa NAK sm70_encode.rs, OpIsberd): dst 16-23, offset 24-31,
-            // imm 40-55, mem_type 74-75, access 76-77, skew 78, output 79.
-            const u32 offset_reg = insn.Bits(24, 8);
-            const u32 imm_offset = insn.Bits(40, 16);
-            const u32 mem_type = insn.Bits(74, 2);
-            const u32 access = insn.Bits(76, 2);
-            const u32 skew = insn.Bits(78, 1);
-            const u32 output = insn.Bits(79, 1);
-            if (imm_offset > 0xff || mem_type > 2 || (offset_reg != 255 && offset_reg >= 246))
-                return fail(index, "native stage buffer entry read mode");
-            // Maxwell ISBERD (maxwell.inc: "1110 1111 1101 0---"): dst 0-7, src 8-15,
-            // imm 24-31, skew 31, o 32, mode 33-34, sz 36-39, shift 47-48 (Default = 0).
-            // O frontend Maxwell ja implementa a semantica completa (patches, primitivas,
-            // atributos indexados e leitura global com skew por lane).
-            emit(0xefd0000000000000ULL | predicate | dest | (u64{offset_reg} << 8) |
-                 (u64{imm_offset} << 24) | (u64{skew} << 31) | (u64{output} << 32) |
-                 (u64{access} << 33) | (u64{mem_type} << 36));
-            break;
-        }
-        case 0x927: { // ISBEWR: escrita no buffer de entrada de estagio (saida de patch/atributo).
-            // O frontend Maxwell nao tem ISBEWR, entao a escrita e descartada: preferivel a
-            // rejeitar o programa inteiro (o objeto/efeito desaparecia da cena).
-            const u32 offset_reg = insn.Bits(24, 8);
-            const u32 data_reg = insn.Bits(32, 8);
-            // 255 = RZ: vale como "sem deslocamento" e como dado zero.
-            if ((offset_reg != 255 && offset_reg >= 246) || (data_reg != 255 && data_reg >= 246))
-                return fail(index, "native stage buffer entry write registers");
-            break;
-        }
         default:
             return fail(index, "unsupported native opcode");
         }