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shader: Implement ViewportIndex

This commit is contained in:
FernandoS27 2021-04-01 08:34:45 +02:00 committed by ameerj
parent fd496d0401
commit d819ba4489
8 changed files with 33 additions and 2 deletions

View file

@ -509,6 +509,12 @@ void EmitContext::DefineOutputs(const Info& info) {
const Id type{TypeArray(F32[1], Constant(U32[1], 8U))};
clip_distances = DefineOutput(*this, type, spv::BuiltIn::ClipDistance);
}
if (info.stores_viewport_index && !ignore_viewport_layer) {
if (stage == Stage::Fragment) {
throw NotImplementedException("Storing ViewportIndex in Fragment stage");
}
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]);

View file

@ -106,6 +106,7 @@ public:
Id front_face{};
Id point_coord{};
Id clip_distances{};
Id viewport_index{};
Id fswzadd_lut_a{};
Id fswzadd_lut_b{};
@ -133,6 +134,8 @@ public:
std::vector<Id> interfaces;
bool ignore_viewport_layer{};
private:
void DefineCommonTypes(const Info& info);
void DefineCommonConstants();

View file

@ -225,6 +225,16 @@ void SetupCapabilities(const Profile& profile, const Info& info, EmitContext& ct
ctx.AddExtension("SPV_EXT_demote_to_helper_invocation");
ctx.AddCapability(spv::Capability::DemoteToHelperInvocationEXT);
}
if (info.stores_viewport_index) {
ctx.AddCapability(spv::Capability::MultiViewport);
if (profile.support_viewport_index_layer_non_geometry &&
ctx.stage == Shader::Stage::VertexB) {
ctx.AddExtension("SPV_EXT_shader_viewport_index_layer");
ctx.AddCapability(spv::Capability::ShaderViewportIndexLayerEXT);
} else {
ctx.ignore_viewport_layer = true;
}
}
if (!profile.support_vertex_instance_id && (info.loads_instance_id || info.loads_vertex_id)) {
ctx.AddExtension("SPV_KHR_shader_draw_parameters");
ctx.AddCapability(spv::Capability::DrawParameters);

View file

@ -29,7 +29,7 @@ std::optional<AttrInfo> AttrTypes(EmitContext& ctx, u32 index) {
throw InvalidArgument("Invalid attribute type {}", type);
}
Id OutputAttrPointer(EmitContext& ctx, IR::Attribute attr) {
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)) {
@ -57,6 +57,8 @@ Id OutputAttrPointer(EmitContext& ctx, IR::Attribute attr) {
const Id clip_num{ctx.Constant(ctx.U32[1], index)};
return ctx.OpAccessChain(ctx.output_f32, ctx.clip_distances, clip_num);
}
case IR::Attribute::ViewportIndex:
return ctx.ignore_viewport_layer ? std::nullopt : std::optional<Id>{ctx.viewport_index};
default:
throw NotImplementedException("Read attribute {}", attr);
}
@ -204,7 +206,11 @@ Id EmitGetAttribute(EmitContext& ctx, IR::Attribute attr) {
}
void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, Id value) {
ctx.OpStore(OutputAttrPointer(ctx, attr), value);
auto output = OutputAttrPointer(ctx, attr);
if (!output) {
return;
}
ctx.OpStore(*output, value);
}
void EmitGetAttributeIndexed(EmitContext&) {

View file

@ -81,6 +81,9 @@ void SetAttribute(Info& info, IR::Attribute attribute) {
case IR::Attribute::ClipDistance7:
info.stores_clip_distance = true;
break;
case IR::Attribute::ViewportIndex:
info.stores_viewport_index = true;
break;
default:
throw NotImplementedException("Set attribute {}", attribute);
}

View file

@ -35,6 +35,7 @@ struct Profile {
bool support_fp64_signed_zero_nan_preserve{};
bool support_explicit_workgroup_layout{};
bool support_vote{};
bool support_viewport_index_layer_non_geometry{};
bool warp_size_potentially_larger_than_guest{};
// FClamp is broken and OpFMax + OpFMin should be used instead

View file

@ -82,6 +82,7 @@ struct Info {
bool stores_position{};
bool stores_point_size{};
bool stores_clip_distance{};
bool stores_viewport_index{};
bool uses_fp16{};
bool uses_fp64{};

View file

@ -631,6 +631,7 @@ PipelineCache::PipelineCache(RasterizerVulkan& rasterizer_, Tegra::GPU& gpu_,
float_control.shaderSignedZeroInfNanPreserveFloat64 != VK_FALSE,
.support_explicit_workgroup_layout = device.IsKhrWorkgroupMemoryExplicitLayoutSupported(),
.support_vote = true,
.support_viewport_index_layer_non_geometry = device.IsExtShaderViewportIndexLayerSupported(),
.warp_size_potentially_larger_than_guest = device.IsWarpSizePotentiallyBiggerThanGuest(),
.has_broken_spirv_clamp = driver_id == VK_DRIVER_ID_INTEL_PROPRIETARY_WINDOWS_KHR,
.generic_input_types{},