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shader_recompiler: support const buffer indirect addressing on OpenGL SPIR-V

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This commit is contained in:
Liam 2022-04-01 11:17:54 -04:00
parent 8e9d253687
commit a45baa0e78
3 changed files with 14 additions and 17 deletions
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21
src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
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@ -1043,15 +1043,15 @@ void EmitContext::DefineConstantBufferIndirectFunctions(const Info& info) {
const Id merge_label{OpLabel()};
const Id uniform_type{uniform_types.*member_ptr};
std::array<Id, Info::MAX_CBUFS> buf_labels;
std::array<Sirit::Literal, Info::MAX_CBUFS> buf_literals;
for (u32 i = 0; i < Info::MAX_CBUFS; i++) {
std::array<Id, Info::MAX_INDIRECT_CBUFS> buf_labels;
std::array<Sirit::Literal, Info::MAX_INDIRECT_CBUFS> buf_literals;
for (u32 i = 0; i < Info::MAX_INDIRECT_CBUFS; i++) {
buf_labels[i] = OpLabel();
buf_literals[i] = Sirit::Literal{i};
}
OpSelectionMerge(merge_label, spv::SelectionControlMask::MaskNone);
OpSwitch(binding, buf_labels[0], buf_literals, buf_labels);
for (u32 i = 0; i < Info::MAX_CBUFS; i++) {
for (u32 i = 0; i < Info::MAX_INDIRECT_CBUFS; i++) {
AddLabel(buf_labels[i]);
const Id cbuf{cbufs[i].*member_ptr};
const Id access_chain{OpAccessChain(uniform_type, cbuf, u32_zero_value, offset)};
@ -1064,22 +1064,23 @@ void EmitContext::DefineConstantBufferIndirectFunctions(const Info& info) {
return func;
}};
IR::Type types{info.used_indirect_cbuf_types};
if (True(types & IR::Type::U8)) {
bool supports_aliasing = profile.support_descriptor_aliasing;
if (supports_aliasing && True(types & IR::Type::U8)) {
load_const_func_u8 = make_accessor(U8, &UniformDefinitions::U8);
}
if (True(types & IR::Type::U16)) {
if (supports_aliasing && True(types & IR::Type::U16)) {
load_const_func_u16 = make_accessor(U16, &UniformDefinitions::U16);
}
if (True(types & IR::Type::F32)) {
if (supports_aliasing && True(types & IR::Type::F32)) {
load_const_func_f32 = make_accessor(F32[1], &UniformDefinitions::F32);
}
if (True(types & IR::Type::U32)) {
if (supports_aliasing && True(types & IR::Type::U32)) {
load_const_func_u32 = make_accessor(U32[1], &UniformDefinitions::U32);
}
if (True(types & IR::Type::U32x2)) {
if (supports_aliasing && True(types & IR::Type::U32x2)) {
load_const_func_u32x2 = make_accessor(U32[2], &UniformDefinitions::U32x2);
}
if (True(types & IR::Type::U32x4)) {
if (!supports_aliasing || True(types & IR::Type::U32x4)) {
load_const_func_u32x4 = make_accessor(U32[4], &UniformDefinitions::U32x4);
}
}

9
src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp
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@ -32,13 +32,8 @@ void AddConstantBufferDescriptor(Info& info, u32 index, u32 count) {
void AddRegisterIndexedLdc(Info& info) {
info.uses_cbuf_indirect = true;
// The shader can use any possible constant buffer
info.constant_buffer_mask = (1 << Info::MAX_CBUFS) - 1;
auto& cbufs{info.constant_buffer_descriptors};
cbufs.clear();
for (u32 i = 0; i < Info::MAX_CBUFS; i++) {
cbufs.push_back(ConstantBufferDescriptor{.index = i, .count = 1});
for (u32 i = 0; i < Info::MAX_INDIRECT_CBUFS; i++) {
AddConstantBufferDescriptor(info, i, 1);
// The shader can use any possible access size
info.constant_buffer_used_sizes[i] = 0x10'000;

1
src/shader_recompiler/shader_info.h
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@ -105,6 +105,7 @@ struct ImageDescriptor {
using ImageDescriptors = boost::container::small_vector<ImageDescriptor, 4>;
struct Info {
static constexpr size_t MAX_INDIRECT_CBUFS{16};
static constexpr size_t MAX_CBUFS{18};
static constexpr size_t MAX_SSBOS{32};