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Merge pull request #3578 from ReinUsesLisp/vmnmx 

shader/video: Partially implement VMNMX
This commit is contained in:
Fernando Sahmkow 2020-04-12 10:44:03 -04:00 committed by GitHub
parent 4aec01b850 76f178ba6e
commit 3d91dbb21d
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 117 additions and 1 deletions
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57
src/video_core/engines/shader_bytecode.h
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@ -290,6 +290,23 @@ enum class VmadShr : u64 {
Shr15 = 2,
};
enum class VmnmxType : u64 {
Bits8,
Bits16,
Bits32,
};
enum class VmnmxOperation : u64 {
Mrg_16H = 0,
Mrg_16L = 1,
Mrg_8B0 = 2,
Mrg_8B2 = 3,
Acc = 4,
Min = 5,
Max = 6,
Nop = 7,
};
enum class XmadMode : u64 {
None = 0,
CLo = 1,
@ -1650,6 +1667,42 @@ union Instruction {
BitField<47, 1, u64> cc;
} vmad;
union {
BitField<54, 1, u64> is_dest_signed;
BitField<48, 1, u64> is_src_a_signed;
BitField<49, 1, u64> is_src_b_signed;
BitField<37, 2, u64> src_format_a;
BitField<29, 2, u64> src_format_b;
BitField<56, 1, u64> mx;
BitField<55, 1, u64> sat;
BitField<36, 2, u64> selector_a;
BitField<28, 2, u64> selector_b;
BitField<50, 1, u64> is_op_b_register;
BitField<51, 3, VmnmxOperation> operation;
VmnmxType SourceFormatA() const {
switch (src_format_a) {
case 0b11:
return VmnmxType::Bits32;
case 0b10:
return VmnmxType::Bits16;
default:
return VmnmxType::Bits8;
}
}
VmnmxType SourceFormatB() const {
switch (src_format_b) {
case 0b11:
return VmnmxType::Bits32;
case 0b10:
return VmnmxType::Bits16;
default:
return VmnmxType::Bits8;
}
}
} vmnmx;
union {
BitField<20, 16, u64> imm20_16;
BitField<35, 1, u64> high_b_rr; // used on RR
@ -1763,6 +1816,7 @@ public:
MEMBAR,
VMAD,
VSETP,
VMNMX,
FFMA_IMM, // Fused Multiply and Add
FFMA_CR,
FFMA_RC,
@ -2070,6 +2124,7 @@ private:
INST("1110111110011---", Id::MEMBAR, Type::Trivial, "MEMBAR"),
INST("01011111--------", Id::VMAD, Type::Video, "VMAD"),
INST("0101000011110---", Id::VSETP, Type::Video, "VSETP"),
INST("0011101---------", Id::VMNMX, Type::Video, "VMNMX"),
INST("0011001-1-------", Id::FFMA_IMM, Type::Ffma, "FFMA_IMM"),
INST("010010011-------", Id::FFMA_CR, Type::Ffma, "FFMA_CR"),
INST("010100011-------", Id::FFMA_RC, Type::Ffma, "FFMA_RC"),
@ -2170,7 +2225,7 @@ private:
INST("0011011-11111---", Id::SHF_LEFT_IMM, Type::Shift, "SHF_LEFT_IMM"),
INST("0100110011100---", Id::I2I_C, Type::Conversion, "I2I_C"),
INST("0101110011100---", Id::I2I_R, Type::Conversion, "I2I_R"),
INST("0011101-11100---", Id::I2I_IMM, Type::Conversion, "I2I_IMM"),
INST("0011100-11100---", Id::I2I_IMM, Type::Conversion, "I2I_IMM"),
INST("0100110010111---", Id::I2F_C, Type::Conversion, "I2F_C"),
INST("0101110010111---", Id::I2F_R, Type::Conversion, "I2F_R"),
INST("0011100-10111---", Id::I2F_IMM, Type::Conversion, "I2F_IMM"),

58
src/video_core/shader/decode/video.cpp
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@ -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

3
src/video_core/shader/shader_ir.h
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@ -354,6 +354,9 @@ 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);