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Merge pull request #3228 from ReinUsesLisp/ptp

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shader/texture: Implement AOFFI and PTP for TLD4 and TLD4S
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bunnei 2019-12-26 21:43:44 -05:00 committed by GitHub
commit 8a76f816a4
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5 changed files with 142 additions and 74 deletions
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12
src/video_core/engines/shader_bytecode.h
View file

@ -1239,7 +1239,7 @@ union Instruction {
BitField<35, 1, u64> ndv_flag;
BitField<49, 1, u64> nodep_flag;
BitField<50, 1, u64> dc_flag;
BitField<54, 2, u64> info;
BitField<54, 2, u64> offset_mode;
BitField<56, 2, u64> component;
bool UsesMiscMode(TextureMiscMode mode) const {
@ -1251,9 +1251,9 @@ union Instruction {
case TextureMiscMode::DC:
return dc_flag != 0;
case TextureMiscMode::AOFFI:
return info == 1;
return offset_mode == 1;
case TextureMiscMode::PTP:
return info == 2;
return offset_mode == 2;
default:
break;
}
@ -1265,7 +1265,7 @@ union Instruction {
BitField<35, 1, u64> ndv_flag;
BitField<49, 1, u64> nodep_flag;
BitField<50, 1, u64> dc_flag;
BitField<33, 2, u64> info;
BitField<33, 2, u64> offset_mode;
BitField<37, 2, u64> component;
bool UsesMiscMode(TextureMiscMode mode) const {
@ -1277,9 +1277,9 @@ union Instruction {
case TextureMiscMode::DC:
return dc_flag != 0;
case TextureMiscMode::AOFFI:
return info == 1;
return offset_mode == 1;
case TextureMiscMode::PTP:
return info == 2;
return offset_mode == 2;
default:
break;
}

88
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View file

@ -48,10 +48,10 @@ class ExprDecompiler;
enum class Type { Void, Bool, Bool2, Float, Int, Uint, HalfFloat };
struct TextureAoffi {};
struct TextureOffset {};
struct TextureDerivates {};
using TextureArgument = std::pair<Type, Node>;
using TextureIR = std::variant<TextureAoffi, TextureDerivates, TextureArgument>;
using TextureIR = std::variant<TextureOffset, TextureDerivates, TextureArgument>;
constexpr u32 MAX_CONSTBUFFER_ELEMENTS =
static_cast<u32>(Maxwell::MaxConstBufferSize) / (4 * sizeof(float));
@ -1077,7 +1077,7 @@ private:
}
std::string GenerateTexture(Operation operation, const std::string& function_suffix,
const std::vector<TextureIR>& extras, bool sepparate_dc = false) {
const std::vector<TextureIR>& extras, bool separate_dc = false) {
constexpr std::array coord_constructors = {"float", "vec2", "vec3", "vec4"};
const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
@ -1090,10 +1090,12 @@ private:
std::string expr = "texture" + function_suffix;
if (!meta->aoffi.empty()) {
expr += "Offset";
} else if (!meta->ptp.empty()) {
expr += "Offsets";
}
expr += '(' + GetSampler(meta->sampler) + ", ";
expr += coord_constructors.at(count + (has_array ? 1 : 0) +
(has_shadow && !sepparate_dc ? 1 : 0) - 1);
(has_shadow && !separate_dc ? 1 : 0) - 1);
expr += '(';
for (std::size_t i = 0; i < count; ++i) {
expr += Visit(operation[i]).AsFloat();
@ -1106,7 +1108,7 @@ private:
expr += ", float(" + Visit(meta->array).AsInt() + ')';
}
if (has_shadow) {
if (sepparate_dc) {
if (separate_dc) {
expr += "), " + Visit(meta->depth_compare).AsFloat();
} else {
expr += ", " + Visit(meta->depth_compare).AsFloat() + ')';
@ -1118,8 +1120,12 @@ private:
for (const auto& variant : extras) {
if (const auto argument = std::get_if<TextureArgument>(&variant)) {
expr += GenerateTextureArgument(*argument);
} else if (std::holds_alternative<TextureAoffi>(variant)) {
} else if (std::holds_alternative<TextureOffset>(variant)) {
if (!meta->aoffi.empty()) {
expr += GenerateTextureAoffi(meta->aoffi);
} else if (!meta->ptp.empty()) {
expr += GenerateTexturePtp(meta->ptp);
}
} else if (std::holds_alternative<TextureDerivates>(variant)) {
expr += GenerateTextureDerivates(meta->derivates);
} else {
@ -1160,6 +1166,20 @@ private:
return expr;
}
std::string ReadTextureOffset(const Node& value) {
if (const auto immediate = std::get_if<ImmediateNode>(&*value)) {
// Inline the string as an immediate integer in GLSL (AOFFI arguments are required
// to be constant by the standard).
return std::to_string(static_cast<s32>(immediate->GetValue()));
} else if (device.HasVariableAoffi()) {
// Avoid using variable AOFFI on unsupported devices.
return Visit(value).AsInt();
} else {
// Insert 0 on devices not supporting variable AOFFI.
return "0";
}
}
std::string GenerateTextureAoffi(const std::vector<Node>& aoffi) {
if (aoffi.empty()) {
return {};
@ -1170,18 +1190,7 @@ private:
expr += '(';
for (std::size_t index = 0; index < aoffi.size(); ++index) {
const auto operand{aoffi.at(index)};
if (const auto immediate = std::get_if<ImmediateNode>(&*operand)) {
// Inline the string as an immediate integer in GLSL (AOFFI arguments are required
// to be constant by the standard).
expr += std::to_string(static_cast<s32>(immediate->GetValue()));
} else if (device.HasVariableAoffi()) {
// Avoid using variable AOFFI on unsupported devices.
expr += Visit(operand).AsInt();
} else {
// Insert 0 on devices not supporting variable AOFFI.
expr += '0';
}
expr += ReadTextureOffset(aoffi.at(index));
if (index + 1 < aoffi.size()) {
expr += ", ";
}
@ -1191,6 +1200,20 @@ private:
return expr;
}
std::string GenerateTexturePtp(const std::vector<Node>& ptp) {
static constexpr std::size_t num_vectors = 4;
ASSERT(ptp.size() == num_vectors * 2);
std::string expr = ", ivec2[](";
for (std::size_t vector = 0; vector < num_vectors; ++vector) {
const bool has_next = vector + 1 < num_vectors;
expr += fmt::format("ivec2({}, {}){}", ReadTextureOffset(ptp.at(vector * 2)),
ReadTextureOffset(ptp.at(vector * 2 + 1)), has_next ? ", " : "");
}
expr += ')';
return expr;
}
std::string GenerateTextureDerivates(const std::vector<Node>& derivates) {
if (derivates.empty()) {
return {};
@ -1689,7 +1712,7 @@ private:
ASSERT(meta);
std::string expr = GenerateTexture(
operation, "", {TextureAoffi{}, TextureArgument{Type::Float, meta->bias}});
operation, "", {TextureOffset{}, TextureArgument{Type::Float, meta->bias}});
if (meta->sampler.IsShadow()) {
expr = "vec4(" + expr + ')';
}
@ -1701,7 +1724,7 @@ private:
ASSERT(meta);
std::string expr = GenerateTexture(
operation, "Lod", {TextureArgument{Type::Float, meta->lod}, TextureAoffi{}});
operation, "Lod", {TextureArgument{Type::Float, meta->lod}, TextureOffset{}});
if (meta->sampler.IsShadow()) {
expr = "vec4(" + expr + ')';
}
@ -1709,21 +1732,19 @@ private:
}
Expression TextureGather(Operation operation) {
const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
ASSERT(meta);
const auto& meta = std::get<MetaTexture>(operation.GetMeta());
const auto type = meta->sampler.IsShadow() ? Type::Float : Type::Int;
if (meta->sampler.IsShadow()) {
return {GenerateTexture(operation, "Gather", {TextureAoffi{}}, true) +
GetSwizzle(meta->element),
Type::Float};
const auto type = meta.sampler.IsShadow() ? Type::Float : Type::Int;
const bool separate_dc = meta.sampler.IsShadow();
std::vector<TextureIR> ir;
if (meta.sampler.IsShadow()) {
ir = {TextureOffset{}};
} else {
return {GenerateTexture(operation, "Gather",
{TextureAoffi{}, TextureArgument{type, meta->component}},
false) +
GetSwizzle(meta->element),
Type::Float};
ir = {TextureOffset{}, TextureArgument{type, meta.component}};
}
return {GenerateTexture(operation, "Gather", ir, separate_dc) + GetSwizzle(meta.element),
Type::Float};
}
Expression TextureQueryDimensions(Operation operation) {
@ -1794,7 +1815,8 @@ private:
const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
ASSERT(meta);
std::string expr = GenerateTexture(operation, "Grad", {TextureDerivates{}, TextureAoffi{}});
std::string expr =
GenerateTexture(operation, "Grad", {TextureDerivates{}, TextureOffset{}});
return {std::move(expr) + GetSwizzle(meta->element), Type::Float};
}

108
src/video_core/shader/decode/texture.cpp
View file

@ -89,59 +89,62 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
[[fallthrough]];
}
case OpCode::Id::TLD4: {
ASSERT(instr.tld4.array == 0);
UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(TextureMiscMode::NDV),
"NDV is not implemented");
UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(TextureMiscMode::PTP),
"PTP is not implemented");
const auto texture_type = instr.tld4.texture_type.Value();
const bool depth_compare = is_bindless ? instr.tld4_b.UsesMiscMode(TextureMiscMode::DC)
: instr.tld4.UsesMiscMode(TextureMiscMode::DC);
const bool is_array = instr.tld4.array != 0;
const bool is_aoffi = is_bindless ? instr.tld4_b.UsesMiscMode(TextureMiscMode::AOFFI)
: instr.tld4.UsesMiscMode(TextureMiscMode::AOFFI);
WriteTexInstructionFloat(
bb, instr,
GetTld4Code(instr, texture_type, depth_compare, is_array, is_aoffi, is_bindless));
const bool is_ptp = is_bindless ? instr.tld4_b.UsesMiscMode(TextureMiscMode::PTP)
: instr.tld4.UsesMiscMode(TextureMiscMode::PTP);
WriteTexInstructionFloat(bb, instr,
GetTld4Code(instr, texture_type, depth_compare, is_array, is_aoffi,
is_ptp, is_bindless));
break;
}
case OpCode::Id::TLD4S: {
const bool uses_aoffi = instr.tld4s.UsesMiscMode(TextureMiscMode::AOFFI);
UNIMPLEMENTED_IF_MSG(uses_aoffi, "AOFFI is not implemented");
const bool depth_compare = instr.tld4s.UsesMiscMode(TextureMiscMode::DC);
constexpr std::size_t num_coords = 2;
const bool is_aoffi = instr.tld4s.UsesMiscMode(TextureMiscMode::AOFFI);
const bool is_depth_compare = instr.tld4s.UsesMiscMode(TextureMiscMode::DC);
const Node op_a = GetRegister(instr.gpr8);
const Node op_b = GetRegister(instr.gpr20);
// TODO(Subv): Figure out how the sampler type is encoded in the TLD4S instruction.
std::vector<Node> coords;
Node dc_reg;
if (depth_compare) {
std::vector<Node> aoffi;
Node depth_compare;
if (is_depth_compare) {
// Note: TLD4S coordinate encoding works just like TEXS's
const Node op_y = GetRegister(instr.gpr8.Value() + 1);
coords.push_back(op_a);
coords.push_back(op_y);
dc_reg = uses_aoffi ? GetRegister(instr.gpr20.Value() + 1) : op_b;
if (is_aoffi) {
aoffi = GetAoffiCoordinates(op_b, num_coords, true);
depth_compare = GetRegister(instr.gpr20.Value() + 1);
} else {
depth_compare = op_b;
}
} else {
// There's no depth compare
coords.push_back(op_a);
if (uses_aoffi) {
const Node op_y = GetRegister(instr.gpr8.Value() + 1);
coords.push_back(op_y);
if (is_aoffi) {
coords.push_back(GetRegister(instr.gpr8.Value() + 1));
aoffi = GetAoffiCoordinates(op_b, num_coords, true);
} else {
coords.push_back(op_b);
}
dc_reg = {};
}
const Node component = Immediate(static_cast<u32>(instr.tld4s.component));
const SamplerInfo info{TextureType::Texture2D, false, depth_compare};
const SamplerInfo info{TextureType::Texture2D, false, is_depth_compare};
const Sampler& sampler = *GetSampler(instr.sampler, info);
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
MetaTexture meta{sampler, {}, dc_reg, {}, {}, {}, {}, component, element};
MetaTexture meta{sampler, {}, depth_compare, aoffi, {}, {}, {}, {}, component, element};
values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
}
@ -190,7 +193,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
}
for (u32 element = 0; element < values.size(); ++element) {
MetaTexture meta{*sampler, {}, {}, {}, derivates, {}, {}, {}, element};
MetaTexture meta{*sampler, {}, {}, {}, {}, derivates, {}, {}, {}, element};
values[element] = Operation(OperationCode::TextureGradient, std::move(meta), coords);
}
@ -230,7 +233,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
if (!instr.txq.IsComponentEnabled(element)) {
continue;
}
MetaTexture meta{*sampler, {}, {}, {}, {}, {}, {}, {}, element};
MetaTexture meta{*sampler, {}, {}, {}, {}, {}, {}, {}, {}, element};
const Node value =
Operation(OperationCode::TextureQueryDimensions, meta,
GetRegister(instr.gpr8.Value() + (is_bindless ? 1 : 0)));
@ -299,7 +302,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
continue;
}
auto params = coords;
MetaTexture meta{*sampler, {}, {}, {}, {}, {}, {}, {}, element};
MetaTexture meta{*sampler, {}, {}, {}, {}, {}, {}, {}, {}, element};
const Node value = Operation(OperationCode::TextureQueryLod, meta, std::move(params));
SetTemporary(bb, indexer++, value);
}
@ -367,7 +370,7 @@ const Sampler* ShaderIR::GetSampler(const Tegra::Shader::Sampler& sampler,
if (it != used_samplers.end()) {
ASSERT(!it->IsBindless() && it->GetType() == info.type && it->IsArray() == info.is_array &&
it->IsShadow() == info.is_shadow && it->IsBuffer() == info.is_buffer);
return &(*it);
return &*it;
}
// Otherwise create a new mapping for this sampler
@ -397,7 +400,7 @@ const Sampler* ShaderIR::GetBindlessSampler(Tegra::Shader::Register reg,
if (it != used_samplers.end()) {
ASSERT(it->IsBindless() && it->GetType() == info.type && it->IsArray() == info.is_array &&
it->IsShadow() == info.is_shadow);
return &(*it);
return &*it;
}
// Otherwise create a new mapping for this sampler
@ -538,7 +541,7 @@ Node4 ShaderIR::GetTextureCode(Instruction instr, TextureType texture_type,
for (u32 element = 0; element < values.size(); ++element) {
auto copy_coords = coords;
MetaTexture meta{*sampler, array, depth_compare, aoffi, {}, bias, lod, {}, element};
MetaTexture meta{*sampler, array, depth_compare, aoffi, {}, {}, bias, lod, {}, element};
values[element] = Operation(read_method, meta, std::move(copy_coords));
}
@ -635,7 +638,9 @@ Node4 ShaderIR::GetTexsCode(Instruction instr, TextureType texture_type,
}
Node4 ShaderIR::GetTld4Code(Instruction instr, TextureType texture_type, bool depth_compare,
bool is_array, bool is_aoffi, bool is_bindless) {
bool is_array, bool is_aoffi, bool is_ptp, bool is_bindless) {
ASSERT_MSG(!(is_aoffi && is_ptp), "AOFFI and PTP can't be enabled at the same time");
const std::size_t coord_count = GetCoordCount(texture_type);
// If enabled arrays index is always stored in the gpr8 field
@ -661,12 +666,15 @@ Node4 ShaderIR::GetTld4Code(Instruction instr, TextureType texture_type, bool de
return values;
}
std::vector<Node> aoffi;
std::vector<Node> aoffi, ptp;
if (is_aoffi) {
aoffi = GetAoffiCoordinates(GetRegister(parameter_register++), coord_count, true);
} else if (is_ptp) {
ptp = GetPtpCoordinates(
{GetRegister(parameter_register++), GetRegister(parameter_register++)});
}
Node dc{};
Node dc;
if (depth_compare) {
dc = GetRegister(parameter_register++);
}
@ -676,8 +684,8 @@ Node4 ShaderIR::GetTld4Code(Instruction instr, TextureType texture_type, bool de
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
MetaTexture meta{*sampler, GetRegister(array_register), dc, aoffi, {}, {}, {}, component,
element};
MetaTexture meta{
*sampler, GetRegister(array_register), dc, aoffi, ptp, {}, {}, {}, component, element};
values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
}
@ -710,7 +718,7 @@ Node4 ShaderIR::GetTldCode(Tegra::Shader::Instruction instr) {
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
MetaTexture meta{sampler, array_register, {}, {}, {}, {}, lod, {}, element};
MetaTexture meta{sampler, array_register, {}, {}, {}, {}, {}, lod, {}, element};
values[element] = Operation(OperationCode::TexelFetch, meta, std::move(coords_copy));
}
@ -760,7 +768,7 @@ Node4 ShaderIR::GetTldsCode(Instruction instr, TextureType texture_type, bool is
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
MetaTexture meta{sampler, array, {}, {}, {}, {}, lod, {}, element};
MetaTexture meta{sampler, array, {}, {}, {}, {}, {}, lod, {}, element};
values[element] = Operation(OperationCode::TexelFetch, meta, std::move(coords_copy));
}
return values;
@ -825,4 +833,38 @@ std::vector<Node> ShaderIR::GetAoffiCoordinates(Node aoffi_reg, std::size_t coor
return aoffi;
}
std::vector<Node> ShaderIR::GetPtpCoordinates(std::array<Node, 2> ptp_regs) {
static constexpr u32 num_entries = 8;
std::vector<Node> ptp;
ptp.reserve(num_entries);
const auto global_size = static_cast<s64>(global_code.size());
const std::optional low = TrackImmediate(ptp_regs[0], global_code, global_size);
const std::optional high = TrackImmediate(ptp_regs[1], global_code, global_size);
if (!low || !high) {
for (u32 entry = 0; entry < num_entries; ++entry) {
const u32 reg = entry / 4;
const u32 offset = entry % 4;
const Node value = BitfieldExtract(ptp_regs[reg], offset * 8, 6);
const Node condition =
Operation(OperationCode::LogicalIGreaterEqual, value, Immediate(32));
const Node negative = Operation(OperationCode::IAdd, value, Immediate(-64));
ptp.push_back(Operation(OperationCode::Select, condition, negative, value));
}
return ptp;
}
const u64 immediate = (static_cast<u64>(*high) << 32) | static_cast<u64>(*low);
for (u32 entry = 0; entry < num_entries; ++entry) {
s32 value = (immediate >> (entry * 8)) & 0b111111;
if (value >= 32) {
value -= 64;
}
ptp.push_back(Immediate(value));
}
return ptp;
}
} // namespace VideoCommon::Shader

1
src/video_core/shader/node.h
View file

@ -374,6 +374,7 @@ struct MetaTexture {
Node array;
Node depth_compare;
std::vector<Node> aoffi;
std::vector<Node> ptp;
std::vector<Node> derivates;
Node bias;
Node lod;

5
src/video_core/shader/shader_ir.h
View file

@ -350,7 +350,8 @@ private:
bool is_array);
Node4 GetTld4Code(Tegra::Shader::Instruction instr, Tegra::Shader::TextureType texture_type,
bool depth_compare, bool is_array, bool is_aoffi, bool is_bindless);
bool depth_compare, bool is_array, bool is_aoffi, bool is_ptp,
bool is_bindless);
Node4 GetTldCode(Tegra::Shader::Instruction instr);
@ -363,6 +364,8 @@ private:
std::vector<Node> GetAoffiCoordinates(Node aoffi_reg, std::size_t coord_count, bool is_tld4);
std::vector<Node> GetPtpCoordinates(std::array<Node, 2> ptp_regs);
Node4 GetTextureCode(Tegra::Shader::Instruction instr, Tegra::Shader::TextureType texture_type,
Tegra::Shader::TextureProcessMode process_mode, std::vector<Node> coords,
Node array, Node depth_compare, u32 bias_offset, std::vector<Node> aoffi,