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Vulkan: Add a workaround for input_position on Adreno drivers

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Adreno drivers will crash compiling geometry shaders if the input position is not wrapped in a gl_in struct.
This commit is contained in:
Billy Laws
2022-08-02 17:41:41 +01:00
parent 1428451722
commit bbfad79c89
5 changed files with 42 additions and 11 deletions
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42
src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
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@ -721,9 +721,21 @@ void EmitContext::DefineAttributeMemAccess(const Info& info) {
size_t label_index{0};
if (info.loads.AnyComponent(IR::Attribute::PositionX)) {
AddLabel(labels[label_index]);
const Id pointer{is_array
? OpAccessChain(input_f32, input_position, vertex, masked_index)
: OpAccessChain(input_f32, input_position, masked_index)};
const Id pointer{[&]() {
if (need_input_position_indirect) {
if (is_array)
return OpAccessChain(input_f32, input_position, vertex, u32_zero_value,
masked_index);
else
return OpAccessChain(input_f32, input_position, u32_zero_value,
masked_index);
} else {
if (is_array)
return OpAccessChain(input_f32, input_position, vertex, masked_index);
else
return OpAccessChain(input_f32, input_position, masked_index);
}
}()};
const Id result{OpLoad(F32[1], pointer)};
OpReturnValue(result);
++label_index;
@ -1367,12 +1379,24 @@ void EmitContext::DefineInputs(const IR::Program& program) {
Decorate(layer, spv::Decoration::Flat);
}
if (loads.AnyComponent(IR::Attribute::PositionX)) {
const bool is_fragment{stage != Stage::Fragment};
const spv::BuiltIn built_in{is_fragment ? spv::BuiltIn::Position : spv::BuiltIn::FragCoord};
input_position = DefineInput(*this, F32[4], true, built_in);
if (profile.support_geometry_shader_passthrough) {
if (info.passthrough.AnyComponent(IR::Attribute::PositionX)) {
Decorate(input_position, spv::Decoration::PassthroughNV);
const bool is_fragment{stage == Stage::Fragment};
if (!is_fragment && profile.has_broken_spirv_position_input) {
need_input_position_indirect = true;
const Id input_position_struct = TypeStruct(F32[4]);
input_position = DefineInput(*this, input_position_struct, true);
MemberDecorate(input_position_struct, 0, spv::Decoration::BuiltIn,
static_cast<unsigned>(spv::BuiltIn::Position));
Decorate(input_position_struct, spv::Decoration::Block);
} else {
const spv::BuiltIn built_in{is_fragment ? spv::BuiltIn::FragCoord : spv::BuiltIn::Position};
input_position = DefineInput(*this, F32[4], true, built_in);
if (profile.support_geometry_shader_passthrough) {
if (info.passthrough.AnyComponent(IR::Attribute::PositionX)) {
Decorate(input_position, spv::Decoration::PassthroughNV);
}
}
}
}