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authorReinUsesLisp <reinuseslisp@airmail.cc>2021-04-14 06:04:59 +0200
committerameerj <52414509+ameerj@users.noreply.github.com>2021-07-23 03:51:27 +0200
commitb126987c59964d81ae3705ad7ad6c0ace8714e19 (patch)
treed6384469b9450431de5679dcd12fa2ce18e9a8dd /src/shader_recompiler/backend
parentshader: Implement early Z tests (diff)
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Diffstat (limited to 'src/shader_recompiler/backend')
-rw-r--r--src/shader_recompiler/backend/spirv/emit_context.cpp54
-rw-r--r--src/shader_recompiler/backend/spirv/emit_context.h8
-rw-r--r--src/shader_recompiler/backend/spirv/emit_spirv.cpp3
-rw-r--r--src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp19
-rw-r--r--src/shader_recompiler/backend/spirv/emit_spirv_special.cpp29
5 files changed, 97 insertions, 16 deletions
diff --git a/src/shader_recompiler/backend/spirv/emit_context.cpp b/src/shader_recompiler/backend/spirv/emit_context.cpp
index df53e58a8..74c42233d 100644
--- a/src/shader_recompiler/backend/spirv/emit_context.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_context.cpp
@@ -135,6 +135,45 @@ Id DefineOutput(EmitContext& ctx, Id type, std::optional<spv::BuiltIn> builtin =
return DefineVariable(ctx, type, builtin, spv::StorageClass::Output);
}
+void DefineGenericOutput(EmitContext& ctx, size_t index) {
+ static constexpr std::string_view swizzle{"xyzw"};
+ const size_t base_attr_index{static_cast<size_t>(IR::Attribute::Generic0X) + index * 4};
+ u32 element{0};
+ while (element < 4) {
+ const u32 remainder{4 - element};
+ const TransformFeedbackVarying* xfb_varying{};
+ if (!ctx.profile.xfb_varyings.empty()) {
+ xfb_varying = &ctx.profile.xfb_varyings[base_attr_index + element];
+ xfb_varying = xfb_varying && xfb_varying->components > 0 ? xfb_varying : nullptr;
+ }
+ const u32 num_components{xfb_varying ? xfb_varying->components : remainder};
+
+ const Id id{DefineOutput(ctx, ctx.F32[num_components])};
+ ctx.Decorate(id, spv::Decoration::Location, static_cast<u32>(index));
+ if (element > 0) {
+ ctx.Decorate(id, spv::Decoration::Component, element);
+ }
+ if (xfb_varying) {
+ ctx.Decorate(id, spv::Decoration::XfbBuffer, xfb_varying->buffer);
+ ctx.Decorate(id, spv::Decoration::XfbStride, xfb_varying->stride);
+ ctx.Decorate(id, spv::Decoration::Offset, xfb_varying->offset);
+ }
+ if (num_components < 4 || element > 0) {
+ ctx.Name(id, fmt::format("out_attr{}", index));
+ } else {
+ const std::string_view subswizzle{swizzle.substr(element, num_components)};
+ ctx.Name(id, fmt::format("out_attr{}_{}", index, subswizzle));
+ }
+ const GenericElementInfo info{
+ .id = id,
+ .first_element = element,
+ .num_components = num_components,
+ };
+ std::fill_n(ctx.output_generics[index].begin(), num_components, info);
+ element += num_components;
+ }
+}
+
Id GetAttributeType(EmitContext& ctx, AttributeType type) {
switch (type) {
case AttributeType::Float:
@@ -663,12 +702,15 @@ void EmitContext::DefineAttributeMemAccess(const Info& info) {
OpReturn();
++label_index;
}
- for (size_t i = 0; i < info.stores_generics.size(); i++) {
+ for (size_t i = 0; i < info.stores_generics.size(); ++i) {
if (!info.stores_generics[i]) {
continue;
}
+ if (output_generics[i][0].num_components != 4) {
+ throw NotImplementedException("Physical stores and transform feedbacks");
+ }
AddLabel(labels[label_index]);
- const Id generic_id{output_generics.at(i)};
+ const Id generic_id{output_generics[i][0].id};
const Id pointer{OpAccessChain(output_f32, generic_id, masked_index)};
OpStore(pointer, store_value);
OpReturn();
@@ -1015,11 +1057,9 @@ void EmitContext::DefineOutputs(const Info& info) {
}
viewport_index = DefineOutput(*this, U32[1], spv::BuiltIn::ViewportIndex);
}
- for (size_t i = 0; i < info.stores_generics.size(); ++i) {
- if (info.stores_generics[i]) {
- output_generics[i] = DefineOutput(*this, F32[4]);
- Decorate(output_generics[i], spv::Decoration::Location, static_cast<u32>(i));
- Name(output_generics[i], fmt::format("out_attr{}", i));
+ for (size_t index = 0; index < info.stores_generics.size(); ++index) {
+ if (info.stores_generics[index]) {
+ DefineGenericOutput(*this, index);
}
}
if (stage == Stage::Fragment) {
diff --git a/src/shader_recompiler/backend/spirv/emit_context.h b/src/shader_recompiler/backend/spirv/emit_context.h
index cade1fa0d..b27e5540c 100644
--- a/src/shader_recompiler/backend/spirv/emit_context.h
+++ b/src/shader_recompiler/backend/spirv/emit_context.h
@@ -79,6 +79,12 @@ struct StorageDefinitions {
Id U32x4{};
};
+struct GenericElementInfo {
+ Id id{};
+ u32 first_element{};
+ u32 num_components{};
+};
+
class EmitContext final : public Sirit::Module {
public:
explicit EmitContext(const Profile& profile, IR::Program& program, u32& binding);
@@ -189,7 +195,7 @@ public:
Id output_point_size{};
Id output_position{};
- std::array<Id, 32> output_generics{};
+ std::array<std::array<GenericElementInfo, 4>, 32> output_generics{};
std::array<Id, 8> frag_color{};
Id frag_depth{};
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.cpp b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
index 7ad00c434..444ba276f 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
@@ -288,6 +288,9 @@ void SetupCapabilities(const Profile& profile, const Info& info, EmitContext& ct
if (info.uses_typeless_image_writes) {
ctx.AddCapability(spv::Capability::StorageImageWriteWithoutFormat);
}
+ if (!ctx.profile.xfb_varyings.empty()) {
+ ctx.AddCapability(spv::Capability::TransformFeedback);
+ }
// TODO: Track this usage
ctx.AddCapability(spv::Capability::ImageGatherExtended);
ctx.AddCapability(spv::Capability::ImageQuery);
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp
index a91b4c212..f9c151a5c 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp
@@ -40,11 +40,17 @@ Id AttrPointer(EmitContext& ctx, Id pointer_type, Id vertex, Id base, Args&&...
}
std::optional<Id> OutputAttrPointer(EmitContext& ctx, IR::Attribute attr) {
- const u32 element{static_cast<u32>(attr) % 4};
- const auto element_id{[&] { return ctx.Constant(ctx.U32[1], element); }};
if (IR::IsGeneric(attr)) {
const u32 index{IR::GenericAttributeIndex(attr)};
- return ctx.OpAccessChain(ctx.output_f32, ctx.output_generics.at(index), element_id());
+ const u32 element{IR::GenericAttributeElement(attr)};
+ const GenericElementInfo& info{ctx.output_generics.at(index).at(element)};
+ if (info.num_components == 1) {
+ return info.id;
+ } else {
+ const u32 index_element{element - info.first_element};
+ const Id index_id{ctx.Constant(ctx.U32[1], index_element)};
+ return ctx.OpAccessChain(ctx.output_f32, info.id, index_id);
+ }
}
switch (attr) {
case IR::Attribute::PointSize:
@@ -52,8 +58,11 @@ std::optional<Id> OutputAttrPointer(EmitContext& ctx, IR::Attribute attr) {
case IR::Attribute::PositionX:
case IR::Attribute::PositionY:
case IR::Attribute::PositionZ:
- case IR::Attribute::PositionW:
- return ctx.OpAccessChain(ctx.output_f32, ctx.output_position, element_id());
+ case IR::Attribute::PositionW: {
+ const u32 element{static_cast<u32>(attr) % 4};
+ const Id element_id{ctx.Constant(ctx.U32[1], element)};
+ return ctx.OpAccessChain(ctx.output_f32, ctx.output_position, element_id);
+ }
case IR::Attribute::ClipDistance0:
case IR::Attribute::ClipDistance1:
case IR::Attribute::ClipDistance2:
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_special.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_special.cpp
index fee740c08..7af29e4dd 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv_special.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv_special.cpp
@@ -22,6 +22,21 @@ void SetFixedPipelinePointSize(EmitContext& ctx) {
ctx.OpStore(ctx.output_point_size, ctx.Constant(ctx.F32[1], point_size));
}
}
+
+Id DefaultVarying(EmitContext& ctx, u32 num_components, u32 element, Id zero, Id one,
+ Id default_vector) {
+ switch (num_components) {
+ case 1:
+ return element == 3 ? one : zero;
+ case 2:
+ return ctx.ConstantComposite(ctx.F32[2], zero, element + 1 == 3 ? one : zero);
+ case 3:
+ return ctx.ConstantComposite(ctx.F32[3], zero, zero, element + 2 == 3 ? one : zero);
+ case 4:
+ return default_vector;
+ }
+ throw InvalidArgument("Bad element");
+}
} // Anonymous namespace
void EmitPrologue(EmitContext& ctx) {
@@ -30,9 +45,17 @@ void EmitPrologue(EmitContext& ctx) {
const Id one{ctx.Constant(ctx.F32[1], 1.0f)};
const Id default_vector{ctx.ConstantComposite(ctx.F32[4], zero, zero, zero, one)};
ctx.OpStore(ctx.output_position, default_vector);
- for (const Id generic_id : ctx.output_generics) {
- if (Sirit::ValidId(generic_id)) {
- ctx.OpStore(generic_id, default_vector);
+ for (const auto& info : ctx.output_generics) {
+ if (info[0].num_components == 0) {
+ continue;
+ }
+ u32 element{0};
+ while (element < 4) {
+ const auto& element_info{info[element]};
+ const u32 num{element_info.num_components};
+ const Id value{DefaultVarying(ctx, num, element, zero, one, default_vector)};
+ ctx.OpStore(element_info.id, value);
+ element += num;
}
}
}