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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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45
src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
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@ -171,17 +171,47 @@ Id MakeDefaultValue(EmitContext& ctx, u32 default_value) {
void EmitContext::DefineInputs(const Info& info) {
switch (stage) {
case Stage::Vertex:
case Stage::Vertex: {
vertex_index = DefineVariable(U32[1], spv::BuiltIn::VertexIndex, spv::StorageClass::Input);
base_vertex = DefineVariable(U32[1], spv::BuiltIn::BaseVertex, spv::StorageClass::Input);
instance_id = DefineVariable(U32[1], spv::BuiltIn::InstanceIndex, spv::StorageClass::Input);
// Create push constants block for instance steps rates
const Id struct_type{Name(TypeStruct(U32[1], U32[1]), "instance_step_rates")};
Decorate(struct_type, spv::Decoration::Block);
MemberName(struct_type, 0, "sr0");
MemberName(struct_type, 1, "sr1");
MemberDecorate(struct_type, 0, spv::Decoration::Offset, 0U);
MemberDecorate(struct_type, 1, spv::Decoration::Offset, 4U);
instance_step_rates = DefineVar(struct_type, spv::StorageClass::PushConstant);
Name(instance_step_rates, "step_rates");
interfaces.push_back(instance_step_rates);
for (const auto& input : info.vs_inputs) {
const Id type{GetAttributeType(*this, input.fmt)};
const Id id{DefineInput(type, input.binding)};
Name(id, fmt::format("vs_in_attr{}", input.binding));
input_params[input.binding] = GetAttributeInfo(input.fmt, id);
interfaces.push_back(id);
if (input.instance_step_rate == Info::VsInput::InstanceIdType::OverStepRate0 ||
input.instance_step_rate == Info::VsInput::InstanceIdType::OverStepRate1) {
const u32 rate_idx =
input.instance_step_rate == Info::VsInput::InstanceIdType::OverStepRate0 ? 0
: 1;
// Note that we pass index rather than Id
input_params[input.binding] = {
rate_idx, input_u32, U32[1], input.num_components, input.instance_data_buf,
};
} else {
Id id{DefineInput(type, input.binding)};
if (input.instance_step_rate == Info::VsInput::InstanceIdType::Plain) {
Name(id, fmt::format("vs_instance_attr{}", input.binding));
} else {
Name(id, fmt::format("vs_in_attr{}", input.binding));
}
input_params[input.binding] = GetAttributeInfo(input.fmt, id);
interfaces.push_back(id);
}
}
break;
}
case Stage::Fragment:
if (info.uses_group_quad) {
subgroup_local_invocation_id = DefineVariable(
@ -276,7 +306,10 @@ void EmitContext::DefineBuffers(const Info& info) {
if (std::ranges::find(type_ids, record_array_type.value, &Id::value) == type_ids.end()) {
Decorate(record_array_type, spv::Decoration::ArrayStride, 4);
const auto name =
fmt::format("{}_cbuf_block_{}{}", stage, 'f', sizeof(float) * CHAR_BIT);
buffer.is_instance_data
? fmt::format("{}_instance_data{}_{}{}", stage, i, 'f',
sizeof(float) * CHAR_BIT)
: fmt::format("{}_cbuf_block_{}{}", stage, 'f', sizeof(float) * CHAR_BIT);
Name(struct_type, name);
Decorate(struct_type, spv::Decoration::Block);
MemberName(struct_type, 0, "data");