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Merge pull request #12487 from liamwhite/clip3

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shader_recompiler: use default value for clip distances array
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Fernando S 2023-12-30 06:54:44 +01:00 committed by GitHub
commit 8517d7cb44
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1 changed files with 38 additions and 22 deletions
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34
src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
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@ -96,9 +96,9 @@ Id ImageType(EmitContext& ctx, const ImageDescriptor& desc, Id sampled_type) {
}
Id DefineVariable(EmitContext& ctx, Id type, std::optional<spv::BuiltIn> builtin,
spv::StorageClass storage_class) {
spv::StorageClass storage_class, std::optional<Id> initializer = std::nullopt) {
const Id pointer_type{ctx.TypePointer(storage_class, type)};
const Id id{ctx.AddGlobalVariable(pointer_type, storage_class)};
const Id id{ctx.AddGlobalVariable(pointer_type, storage_class, initializer)};
if (builtin) {
ctx.Decorate(id, spv::Decoration::BuiltIn, *builtin);
}
@ -144,11 +144,12 @@ Id DefineInput(EmitContext& ctx, Id type, bool per_invocation,
}
Id DefineOutput(EmitContext& ctx, Id type, std::optional<u32> invocations,
std::optional<spv::BuiltIn> builtin = std::nullopt) {
std::optional<spv::BuiltIn> builtin = std::nullopt,
std::optional<Id> initializer = std::nullopt) {
if (invocations && ctx.stage == Stage::TessellationControl) {
type = ctx.TypeArray(type, ctx.Const(*invocations));
}
return DefineVariable(ctx, type, builtin, spv::StorageClass::Output);
return DefineVariable(ctx, type, builtin, spv::StorageClass::Output, initializer);
}
void DefineGenericOutput(EmitContext& ctx, size_t index, std::optional<u32> invocations) {
@ -811,11 +812,15 @@ void EmitContext::DefineAttributeMemAccess(const Info& info) {
labels.push_back(OpLabel());
}
if (info.stores.ClipDistances()) {
if (profile.max_user_clip_distances >= 4) {
literals.push_back(static_cast<u32>(IR::Attribute::ClipDistance0) >> 2);
labels.push_back(OpLabel());
}
if (profile.max_user_clip_distances >= 8) {
literals.push_back(static_cast<u32>(IR::Attribute::ClipDistance4) >> 2);
labels.push_back(OpLabel());
}
}
OpSelectionMerge(end_block, spv::SelectionControlMask::MaskNone);
OpSwitch(compare_index, default_label, literals, labels);
AddLabel(default_label);
@ -843,18 +848,22 @@ void EmitContext::DefineAttributeMemAccess(const Info& info) {
++label_index;
}
if (info.stores.ClipDistances()) {
if (profile.max_user_clip_distances >= 4) {
AddLabel(labels[label_index]);
const Id pointer{OpAccessChain(output_f32, clip_distances, masked_index)};
OpStore(pointer, store_value);
OpReturn();
++label_index;
}
if (profile.max_user_clip_distances >= 8) {
AddLabel(labels[label_index]);
const Id fixed_index{OpIAdd(U32[1], masked_index, Const(4U))};
const Id pointer2{OpAccessChain(output_f32, clip_distances, fixed_index)};
OpStore(pointer2, store_value);
const Id pointer{OpAccessChain(output_f32, clip_distances, fixed_index)};
OpStore(pointer, store_value);
OpReturn();
++label_index;
}
}
AddLabel(end_block);
OpUnreachable();
OpFunctionEnd();
@ -1532,9 +1541,16 @@ void EmitContext::DefineOutputs(const IR::Program& program) {
if (stage == Stage::Fragment) {
throw NotImplementedException("Storing ClipDistance in fragment stage");
}
const Id type{TypeArray(
F32[1], Const(std::min(info.used_clip_distances, profile.max_user_clip_distances)))};
clip_distances = DefineOutput(*this, type, invocations, spv::BuiltIn::ClipDistance);
if (profile.max_user_clip_distances > 0) {
const u32 used{std::min(profile.max_user_clip_distances, 8u)};
const std::array<Id, 8> zero{f32_zero_value, f32_zero_value, f32_zero_value,
f32_zero_value, f32_zero_value, f32_zero_value,
f32_zero_value, f32_zero_value};
const Id type{TypeArray(F32[1], Const(used))};
const Id initializer{ConstantComposite(type, std::span(zero).subspan(0, used))};
clip_distances =
DefineOutput(*this, type, invocations, spv::BuiltIn::ClipDistance, initializer);
}
}
if (info.stores[IR::Attribute::Layer] &&
(profile.support_viewport_index_layer_non_geometry || stage == Stage::Geometry)) {