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-rw-r--r--src/video_core/shader/decode/video.cpp58
-rw-r--r--src/video_core/shader/shader_ir.h3
2 files changed, 61 insertions, 0 deletions
diff --git a/src/video_core/shader/decode/video.cpp b/src/video_core/shader/decode/video.cpp
index b047cf870..64ba60ea2 100644
--- a/src/video_core/shader/decode/video.cpp
+++ b/src/video_core/shader/decode/video.cpp
@@ -10,16 +10,24 @@
namespace VideoCommon::Shader {
+using std::move;
using Tegra::Shader::Instruction;
using Tegra::Shader::OpCode;
using Tegra::Shader::Pred;
using Tegra::Shader::VideoType;
using Tegra::Shader::VmadShr;
+using Tegra::Shader::VmnmxOperation;
+using Tegra::Shader::VmnmxType;
u32 ShaderIR::DecodeVideo(NodeBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const auto opcode = OpCode::Decode(instr);
+ if (opcode->get().GetId() == OpCode::Id::VMNMX) {
+ DecodeVMNMX(bb, instr);
+ return pc;
+ }
+
const Node op_a =
GetVideoOperand(GetRegister(instr.gpr8), instr.video.is_byte_chunk_a, instr.video.signed_a,
instr.video.type_a, instr.video.byte_height_a);
@@ -109,4 +117,54 @@ Node ShaderIR::GetVideoOperand(Node op, bool is_chunk, bool is_signed,
}
}
+void ShaderIR::DecodeVMNMX(NodeBlock& bb, Tegra::Shader::Instruction instr) {
+ UNIMPLEMENTED_IF(!instr.vmnmx.is_op_b_register);
+ UNIMPLEMENTED_IF(instr.vmnmx.SourceFormatA() != VmnmxType::Bits32);
+ UNIMPLEMENTED_IF(instr.vmnmx.SourceFormatB() != VmnmxType::Bits32);
+ UNIMPLEMENTED_IF(instr.vmnmx.is_src_a_signed != instr.vmnmx.is_src_b_signed);
+ UNIMPLEMENTED_IF(instr.vmnmx.sat);
+ UNIMPLEMENTED_IF(instr.generates_cc);
+
+ Node op_a = GetRegister(instr.gpr8);
+ Node op_b = GetRegister(instr.gpr20);
+ Node op_c = GetRegister(instr.gpr39);
+
+ const bool is_oper1_signed = instr.vmnmx.is_src_a_signed; // Stubbed
+ const bool is_oper2_signed = instr.vmnmx.is_dest_signed;
+
+ const auto operation_a = instr.vmnmx.mx ? OperationCode::IMax : OperationCode::IMin;
+ Node value = SignedOperation(operation_a, is_oper1_signed, move(op_a), move(op_b));
+
+ switch (instr.vmnmx.operation) {
+ case VmnmxOperation::Mrg_16H:
+ value = BitfieldInsert(move(op_c), move(value), 16, 16);
+ break;
+ case VmnmxOperation::Mrg_16L:
+ value = BitfieldInsert(move(op_c), move(value), 0, 16);
+ break;
+ case VmnmxOperation::Mrg_8B0:
+ value = BitfieldInsert(move(op_c), move(value), 0, 8);
+ break;
+ case VmnmxOperation::Mrg_8B2:
+ value = BitfieldInsert(move(op_c), move(value), 16, 8);
+ break;
+ case VmnmxOperation::Acc:
+ value = Operation(OperationCode::IAdd, move(value), move(op_c));
+ break;
+ case VmnmxOperation::Min:
+ value = SignedOperation(OperationCode::IMin, is_oper2_signed, move(value), move(op_c));
+ break;
+ case VmnmxOperation::Max:
+ value = SignedOperation(OperationCode::IMax, is_oper2_signed, move(value), move(op_c));
+ break;
+ case VmnmxOperation::Nop:
+ break;
+ default:
+ UNREACHABLE();
+ break;
+ }
+
+ SetRegister(bb, instr.gpr0, move(value));
+}
+
} // namespace VideoCommon::Shader
diff --git a/src/video_core/shader/shader_ir.h b/src/video_core/shader/shader_ir.h
index 80fc9b82c..0f1ebef1b 100644
--- a/src/video_core/shader/shader_ir.h
+++ b/src/video_core/shader/shader_ir.h
@@ -350,6 +350,9 @@ private:
/// Marks the usage of a input or output attribute.
void MarkAttributeUsage(Tegra::Shader::Attribute::Index index, u64 element);
+ /// Decodes VMNMX instruction and inserts its code into the passed basic block.
+ void DecodeVMNMX(NodeBlock& bb, Tegra::Shader::Instruction instr);
+
void WriteTexInstructionFloat(NodeBlock& bb, Tegra::Shader::Instruction instr,
const Node4& components);