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shader_ir/other: Implement IPA.IDX

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This commit is contained in:
ReinUsesLisp 2019-05-02 21:45:53 -03:00
parent 5321cdd276
commit d4df803b2b
2 changed files with 9 additions and 5 deletions
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1
src/video_core/engines/shader_bytecode.h
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@ -596,6 +596,7 @@ union Instruction {
} alu;
union {
BitField<38, 1, u64> idx;
BitField<51, 1, u64> saturate;
BitField<52, 2, IpaSampleMode> sample_mode;
BitField<54, 2, IpaInterpMode> interp_mode;

13
src/video_core/shader/decode/other.cpp
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@ -130,15 +130,18 @@ u32 ShaderIR::DecodeOther(NodeBlock& bb, u32 pc) {
break;
}
case OpCode::Id::IPA: {
const auto& attribute = instr.attribute.fmt28;
const bool is_physical = instr.ipa.idx && instr.gpr8.Value() != 0xff;
const auto attribute = instr.attribute.fmt28;
const Tegra::Shader::IpaMode input_mode{instr.ipa.interp_mode.Value(),
instr.ipa.sample_mode.Value()};
const Node attr = GetInputAttribute(attribute.index, attribute.element);
Node value = attr;
Node value = is_physical ? GetPhysicalInputAttribute(instr.gpr8)
: GetInputAttribute(attribute.index, attribute.element);
const Tegra::Shader::Attribute::Index index = attribute.index.Value();
if (index >= Tegra::Shader::Attribute::Index::Attribute_0 &&
index <= Tegra::Shader::Attribute::Index::Attribute_31) {
const bool is_generic = index >= Tegra::Shader::Attribute::Index::Attribute_0 &&
index <= Tegra::Shader::Attribute::Index::Attribute_31;
if (is_generic || is_physical) {
// TODO(Blinkhawk): There are cases where a perspective attribute use PASS.
// In theory by setting them as perspective, OpenGL does the perspective correction.
// A way must figured to reverse the last step of it.