From dbd882ddeb1a1a9233c0085d0b8ccb022db385b2 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Sat, 27 Mar 2021 04:59:58 -0300
Subject: shader: Better interpolation and disabled attributes support
---
src/shader_recompiler/frontend/maxwell/program.cpp | 35 ++++++++++++++++++++++
1 file changed, 35 insertions(+)
(limited to 'src/shader_recompiler/frontend/maxwell/program.cpp')
diff --git a/src/shader_recompiler/frontend/maxwell/program.cpp b/src/shader_recompiler/frontend/maxwell/program.cpp
index 6efaf6ee08..a914a91f48 100644
--- a/src/shader_recompiler/frontend/maxwell/program.cpp
+++ b/src/shader_recompiler/frontend/maxwell/program.cpp
@@ -27,6 +27,40 @@ static void RemoveUnreachableBlocks(IR::Program& program) {
});
}
+static void CollectInterpolationInfo(Environment& env, IR::Program& program) {
+ if (program.stage != Stage::Fragment) {
+ return;
+ }
+ const ProgramHeader& sph{env.SPH()};
+ for (size_t index = 0; index < program.info.input_generics.size(); ++index) {
+ std::optional<PixelImap> imap;
+ for (const PixelImap value : sph.ps.GenericInputMap(static_cast<u32>(index))) {
+ if (value == PixelImap::Unused) {
+ continue;
+ }
+ if (imap && imap != value) {
+ throw NotImplementedException("Per component interpolation");
+ }
+ imap = value;
+ }
+ if (!imap) {
+ continue;
+ }
+ program.info.input_generics[index].interpolation = [&] {
+ switch (*imap) {
+ case PixelImap::Unused:
+ case PixelImap::Perspective:
+ return Interpolation::Smooth;
+ case PixelImap::Constant:
+ return Interpolation::Flat;
+ case PixelImap::ScreenLinear:
+ return Interpolation::NoPerspective;
+ }
+ throw NotImplementedException("Unknown interpolation {}", *imap);
+ }();
+ }
+}
+
IR::Program TranslateProgram(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Block>& block_pool,
Environment& env, Flow::CFG& cfg) {
IR::Program program;
@@ -51,6 +85,7 @@ IR::Program TranslateProgram(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Blo
Optimization::IdentityRemovalPass(program);
Optimization::VerificationPass(program);
Optimization::CollectShaderInfoPass(program);
+ CollectInterpolationInfo(env, program);
return program;
}
--
cgit v1.2.3-70-g09d2