diff options
| author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2021-04-19 16:33:23 -0300 |
|---|---|---|
| committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-22 21:51:28 -0400 |
| commit | 7018e524f5e6217b3259333acc4ea09ad036d331 (patch) | |
| tree | 58e750b08d48e018accc4de9a05cb483d825904c /src/shader_recompiler/frontend/maxwell/program.cpp | |
| parent | 6325601947a523b1aea192a51ccd9e417bf0646c (diff) | |
shader: Add NVN storage buffer fallbacks
When we can't track the SSBO origin of a global memory instruction,
leave it as a global memory operation and assume these pointers are in
the NVN storage buffer slots, then apply a linear search in the shader's
runtime.
Diffstat (limited to 'src/shader_recompiler/frontend/maxwell/program.cpp')
| -rw-r--r-- | src/shader_recompiler/frontend/maxwell/program.cpp | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/program.cpp b/src/shader_recompiler/frontend/maxwell/program.cpp index 20a1d61cc4..14180dcd97 100644 --- a/src/shader_recompiler/frontend/maxwell/program.cpp +++ b/src/shader_recompiler/frontend/maxwell/program.cpp @@ -60,6 +60,48 @@ void CollectInterpolationInfo(Environment& env, IR::Program& program) { }(); } } + +void AddNVNStorageBuffers(IR::Program& program) { + if (!program.info.uses_global_memory) { + return; + } + const u32 driver_cbuf{0}; + const u32 descriptor_size{0x10}; + const u32 num_buffers{16}; + const u32 base{[&] { + switch (program.stage) { + case Stage::VertexA: + case Stage::VertexB: + return 0x110u; + case Stage::TessellationControl: + return 0x210u; + case Stage::TessellationEval: + return 0x310u; + case Stage::Geometry: + return 0x410u; + case Stage::Fragment: + return 0x510u; + case Stage::Compute: + return 0x310u; + } + throw InvalidArgument("Invalid stage {}", program.stage); + }()}; + auto& descs{program.info.storage_buffers_descriptors}; + for (u32 index = 0; index < num_buffers; ++index) { + const u32 offset{base + index * descriptor_size}; + const auto it{std::ranges::find(descs, offset, &StorageBufferDescriptor::cbuf_offset)}; + if (it != descs.end()) { + continue; + } + // Assume these are written for now + descs.push_back({ + .cbuf_index = driver_cbuf, + .cbuf_offset = offset, + .count = 1, + .is_written = true, + }); + } +} } // Anonymous namespace IR::Program TranslateProgram(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Block>& block_pool, @@ -105,6 +147,7 @@ IR::Program TranslateProgram(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Blo Optimization::VerificationPass(program); Optimization::CollectShaderInfoPass(env, program); CollectInterpolationInfo(env, program); + AddNVNStorageBuffers(program); return program; } |