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Merge pull request #1071 from bunnei/fix-ldc 

gl_shader_decompiler: Several fixes for indirect constant buffer loads.
This commit is contained in:
bunnei 2018-08-14 23:14:09 -04:00 committed by GitHub
parent 991eb4824c 5e66a24423
commit c8cd1785e6
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 22 additions and 13 deletions
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35
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -383,15 +383,13 @@ public:
}
}
std::string GetUniformIndirect(u64 index, s64 offset, const Register& index_reg,
std::string GetUniformIndirect(u64 cbuf_index, s64 offset, const std::string& index_str,
GLSLRegister::Type type) {
declr_const_buffers[index].MarkAsUsedIndirect(index, stage);
declr_const_buffers[cbuf_index].MarkAsUsedIndirect(cbuf_index, stage);
std::string final_offset = "((floatBitsToInt(" + GetRegister(index_reg, 0) + ") + " +
std::to_string(offset) + ") / 4)";
std::string value =
'c' + std::to_string(index) + '[' + final_offset + " / 4][" + final_offset + " % 4]";
std::string final_offset = fmt::format("({} + {})", index_str, offset / 4);
std::string value = 'c' + std::to_string(cbuf_index) + '[' + final_offset + " / 4][" +
final_offset + " % 4]";
if (type == GLSLRegister::Type::Float) {
return value;
@ -1355,11 +1353,16 @@ private:
case OpCode::Id::LD_C: {
ASSERT_MSG(instr.ld_c.unknown == 0, "Unimplemented");
// Add an extra scope and declare the index register inside to prevent
// overwriting it in case it is used as an output of the LD instruction.
shader.AddLine("{");
++shader.scope;
shader.AddLine("uint index = (" + regs.GetRegisterAsInteger(instr.gpr8, 0, false) +
" / 4) & (MAX_CONSTBUFFER_ELEMENTS - 1);");
std::string op_a =
regs.GetUniformIndirect(instr.cbuf36.index, instr.cbuf36.offset + 0, instr.gpr8,
GLSLRegister::Type::Float);
std::string op_b =
regs.GetUniformIndirect(instr.cbuf36.index, instr.cbuf36.offset + 4, instr.gpr8,
regs.GetUniformIndirect(instr.cbuf36.index, instr.cbuf36.offset + 0, "index",
GLSLRegister::Type::Float);
switch (instr.ld_c.type.Value()) {
@ -1367,16 +1370,22 @@ private:
regs.SetRegisterToFloat(instr.gpr0, 0, op_a, 1, 1);
break;
case Tegra::Shader::UniformType::Double:
case Tegra::Shader::UniformType::Double: {
std::string op_b =
regs.GetUniformIndirect(instr.cbuf36.index, instr.cbuf36.offset + 4,
"index", GLSLRegister::Type::Float);
regs.SetRegisterToFloat(instr.gpr0, 0, op_a, 1, 1);
regs.SetRegisterToFloat(instr.gpr0.Value() + 1, 0, op_b, 1, 1);
break;
}
default:
LOG_CRITICAL(HW_GPU, "Unhandled type: {}",
static_cast<unsigned>(instr.ld_c.type.Value()));
UNREACHABLE();
}
--shader.scope;
shader.AddLine("}");
break;
}
case OpCode::Id::ST_A: {