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-rw-r--r--src/video_core/shader/decode.cpp1
-rw-r--r--src/video_core/shader/decode/video.cpp120
-rw-r--r--src/video_core/shader/shader_ir.h4
3 files changed, 125 insertions, 0 deletions
diff --git a/src/video_core/shader/decode.cpp b/src/video_core/shader/decode.cpp
index 722b32ff1..3265de869 100644
--- a/src/video_core/shader/decode.cpp
+++ b/src/video_core/shader/decode.cpp
@@ -174,6 +174,7 @@ u32 ShaderIR::DecodeInstr(BasicBlock& bb, u32 pc) {
{OpCode::Type::FloatSet, &ShaderIR::DecodeFloatSet},
{OpCode::Type::IntegerSet, &ShaderIR::DecodeIntegerSet},
{OpCode::Type::HalfSet, &ShaderIR::DecodeHalfSet},
+ {OpCode::Type::Video, &ShaderIR::DecodeVideo},
{OpCode::Type::Xmad, &ShaderIR::DecodeXmad},
};
diff --git a/src/video_core/shader/decode/video.cpp b/src/video_core/shader/decode/video.cpp
new file mode 100644
index 000000000..9510896e4
--- /dev/null
+++ b/src/video_core/shader/decode/video.cpp
@@ -0,0 +1,120 @@
+// Copyright 2018 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/assert.h"
+#include "common/common_types.h"
+#include "video_core/engines/shader_bytecode.h"
+#include "video_core/shader/shader_ir.h"
+
+namespace VideoCommon::Shader {
+
+using Tegra::Shader::Instruction;
+using Tegra::Shader::OpCode;
+using Tegra::Shader::Pred;
+using Tegra::Shader::VideoType;
+using Tegra::Shader::VmadShr;
+
+u32 ShaderIR::DecodeVideo(BasicBlock& bb, u32 pc) {
+ const Instruction instr = {program_code[pc]};
+ const auto opcode = OpCode::Decode(instr);
+
+ 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);
+ const Node op_b = [&]() {
+ if (instr.video.use_register_b) {
+ return GetVideoOperand(GetRegister(instr.gpr20), instr.video.is_byte_chunk_b,
+ instr.video.signed_b, instr.video.type_b,
+ instr.video.byte_height_b);
+ }
+ if (instr.video.signed_b) {
+ const auto imm = static_cast<s16>(instr.alu.GetImm20_16());
+ return Immediate(static_cast<u32>(imm));
+ } else {
+ return Immediate(instr.alu.GetImm20_16());
+ }
+ }();
+
+ switch (opcode->get().GetId()) {
+ case OpCode::Id::VMAD: {
+ UNIMPLEMENTED_IF_MSG(instr.generates_cc,
+ "Condition codes generation in VMAD is not implemented");
+
+ const bool result_signed = instr.video.signed_a == 1 || instr.video.signed_b == 1;
+ const Node op_c = GetRegister(instr.gpr39);
+
+ Node value = SignedOperation(OperationCode::IMul, result_signed, NO_PRECISE, op_a, op_b);
+ value = SignedOperation(OperationCode::IAdd, result_signed, NO_PRECISE, value, op_c);
+
+ if (instr.vmad.shr == VmadShr::Shr7 || instr.vmad.shr == VmadShr::Shr15) {
+ const Node shift = Immediate(instr.vmad.shr == VmadShr::Shr7 ? 7 : 15);
+ value =
+ SignedOperation(OperationCode::IArithmeticShiftRight, result_signed, value, shift);
+ }
+
+ SetRegister(bb, instr.gpr0, value);
+
+ break;
+ }
+ case OpCode::Id::VSETP: {
+ // We can't use the constant predicate as destination.
+ ASSERT(instr.vsetp.pred3 != static_cast<u64>(Pred::UnusedIndex));
+
+ const bool sign = instr.video.signed_a == 1 || instr.video.signed_b == 1;
+ const Node first_pred = GetPredicateComparisonInteger(instr.vsetp.cond, sign, op_a, op_b);
+ const Node second_pred = GetPredicate(instr.vsetp.pred39, false);
+
+ const OperationCode combiner = GetPredicateCombiner(instr.vsetp.op);
+
+ // Set the primary predicate to the result of Predicate OP SecondPredicate
+ SetPredicate(bb, instr.vsetp.pred3, Operation(combiner, first_pred, second_pred));
+
+ if (instr.vsetp.pred0 != static_cast<u64>(Pred::UnusedIndex)) {
+ // Set the secondary predicate to the result of !Predicate OP SecondPredicate,
+ // if enabled
+ const Node negate_pred = Operation(OperationCode::LogicalNegate, first_pred);
+ SetPredicate(bb, instr.vsetp.pred0, Operation(combiner, negate_pred, second_pred));
+ }
+ break;
+ }
+ default:
+ UNIMPLEMENTED_MSG("Unhandled video instruction: {}", opcode->get().GetName());
+ }
+
+ return pc;
+}
+
+Node ShaderIR::GetVideoOperand(Node op, bool is_chunk, bool is_signed,
+ Tegra::Shader::VideoType type, u64 byte_height) {
+ if (!is_chunk) {
+ const auto offset = static_cast<u32>(byte_height * 8);
+ const Node shift = SignedOperation(OperationCode::ILogicalShiftRight, is_signed, NO_PRECISE,
+ op, Immediate(offset));
+ return SignedOperation(OperationCode::IBitwiseAnd, is_signed, NO_PRECISE, shift,
+ Immediate(0xff));
+ }
+ const Node zero = Immediate(0);
+
+ switch (type) {
+ case Tegra::Shader::VideoType::Size16_Low:
+ return SignedOperation(OperationCode::IBitwiseAnd, is_signed, NO_PRECISE, op,
+ Immediate(0xffff));
+ case Tegra::Shader::VideoType::Size16_High:
+ return SignedOperation(OperationCode::ILogicalShiftRight, is_signed, NO_PRECISE, op,
+ Immediate(16));
+ case Tegra::Shader::VideoType::Size32:
+ // TODO(Rodrigo): From my hardware tests it becomes a bit "mad" when this type is used
+ // (1 * 1 + 0 == 0x5b800000). Until a better explanation is found: abort.
+ UNIMPLEMENTED();
+ return zero;
+ case Tegra::Shader::VideoType::Invalid:
+ UNREACHABLE_MSG("Invalid instruction encoding");
+ return zero;
+ default:
+ UNREACHABLE();
+ return zero;
+ }
+}
+
+} // namespace VideoCommon::Shader \ No newline at end of file
diff --git a/src/video_core/shader/shader_ir.h b/src/video_core/shader/shader_ir.h
index 69ff18058..0ea2df6bd 100644
--- a/src/video_core/shader/shader_ir.h
+++ b/src/video_core/shader/shader_ir.h
@@ -595,6 +595,7 @@ private:
u32 DecodeFloatSet(BasicBlock& bb, u32 pc);
u32 DecodeIntegerSet(BasicBlock& bb, u32 pc);
u32 DecodeHalfSet(BasicBlock& bb, u32 pc);
+ u32 DecodeVideo(BasicBlock& bb, u32 pc);
u32 DecodeXmad(BasicBlock& bb, u32 pc);
u32 DecodeOther(BasicBlock& bb, u32 pc);
@@ -712,6 +713,9 @@ private:
bool is_array, std::size_t array_offset, std::size_t bias_offset,
std::vector<Node>&& coords);
+ Node GetVideoOperand(Node op, bool is_chunk, bool is_signed, Tegra::Shader::VideoType type,
+ u64 byte_height);
+
void WriteLogicOperation(BasicBlock& bb, Tegra::Shader::Register dest,
Tegra::Shader::LogicOperation logic_op, Node op_a, Node op_b,
Tegra::Shader::PredicateResultMode predicate_mode,
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 09:06:13 +0100