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renderer: added support for instance step rates

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This commit is contained in:
psucien 2024-07-06 17:01:43 +02:00
parent 986ed0662c
commit cfbe8b9e6d
9 changed files with 129 additions and 26 deletions
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21
src/shader_recompiler/frontend/translate/translate.cpp
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@ -235,9 +235,21 @@ void Translator::EmitFetch(const GcnInst& inst) {
ir.SetVectorReg(dst_reg++, comp);
}
if (attrib.instance_data == 2 || attrib.instance_data == 3) {
LOG_WARNING(Render_Recompiler, "Unsupported instance step rate = {}",
attrib.instance_data);
// In case of programmable step rates we need to fallback to instance data pulling in
// shader, so VBs should be bound as regular data buffers
s32 instance_buf_handle = -1;
const auto step_rate = static_cast<Info::VsInput::InstanceIdType>(attrib.instance_data);
if (step_rate == Info::VsInput::OverStepRate0 ||
step_rate == Info::VsInput::OverStepRate1) {
info.buffers.push_back({
.sgpr_base = attrib.sgpr_base,
.dword_offset = attrib.dword_offset,
.stride = buffer.GetStride(),
.num_records = buffer.num_records,
.used_types = IR::Type::F32,
.is_instance_data = true,
});
instance_buf_handle = s32(info.buffers.size() - 1);
}
const u32 num_components = AmdGpu::NumComponents(buffer.GetDataFmt());
@ -247,7 +259,8 @@ void Translator::EmitFetch(const GcnInst& inst) {
.num_components = std::min<u16>(attrib.num_elements, num_components),
.sgpr_base = attrib.sgpr_base,
.dword_offset = attrib.dword_offset,
.instance_step_rate = static_cast<Info::VsInput::InstanceIdType>(attrib.instance_data),
.instance_step_rate = step_rate,
.instance_data_buf = instance_buf_handle,
});
}
}