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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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90
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -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)) {
expr += GenerateTextureAoffi(meta->aoffi);
} 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};
}