diff options
Diffstat (limited to 'src/video_core/renderer_opengl')
| -rw-r--r-- | src/video_core/renderer_opengl/gl_shader_decompiler.cpp | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp index 94e318966..7e5ebfe24 100644 --- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp +++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp @@ -1287,6 +1287,67 @@ private: instr.alu.saturate_d); break; } + case OpCode::Id::IADD3_C: + case OpCode::Id::IADD3_R: + case OpCode::Id::IADD3_IMM: { + std::string op_c = regs.GetRegisterAsInteger(instr.gpr39); + + auto apply_height = [](auto height, auto& oprand) { + switch (height) { + case Tegra::Shader::IAdd3Height::None: + break; + case Tegra::Shader::IAdd3Height::LowerHalfWord: + oprand = "((" + oprand + ") & 0xFFFF)"; + break; + case Tegra::Shader::IAdd3Height::UpperHalfWord: + oprand = "((" + oprand + ") >> 16)"; + break; + default: + LOG_CRITICAL(HW_GPU, "Unhandled IADD3 height: {}", + static_cast<u32>(height.Value())); + UNREACHABLE(); + } + }; + + if (opcode->GetId() == OpCode::Id::IADD3_R) { + apply_height(instr.iadd3.height_a, op_a); + apply_height(instr.iadd3.height_b, op_b); + apply_height(instr.iadd3.height_c, op_c); + } + + if (instr.iadd3.neg_a) + op_a = "-(" + op_a + ')'; + + if (instr.iadd3.neg_b) + op_b = "-(" + op_b + ')'; + + if (instr.iadd3.neg_c) + op_c = "-(" + op_c + ')'; + + std::string result; + if (opcode->GetId() == OpCode::Id::IADD3_R) { + switch (instr.iadd3.mode) { + case Tegra::Shader::IAdd3Mode::RightShift: + // TODO(tech4me): According to + // https://envytools.readthedocs.io/en/latest/hw/graph/maxwell/cuda/int.html?highlight=iadd3 + // The addition between op_a and op_b should be done in uint33, more + // investigation required + result = "(((" + op_a + " + " + op_b + ") >> 16) + " + op_c + ')'; + break; + case Tegra::Shader::IAdd3Mode::LeftShift: + result = "(((" + op_a + " + " + op_b + ") << 16) + " + op_c + ')'; + break; + default: + result = '(' + op_a + " + " + op_b + " + " + op_c + ')'; + break; + } + } else { + result = '(' + op_a + " + " + op_b + " + " + op_c + ')'; + } + + regs.SetRegisterToInteger(instr.gpr0, true, 0, result, 1, 1); + break; + } case OpCode::Id::ISCADD_C: case OpCode::Id::ISCADD_R: case OpCode::Id::ISCADD_IMM: { |