From 5ca63d06757a92fdbd7d75d81f0c9ff1d7ab4e62 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Fri, 22 Feb 2019 03:30:12 -0300
Subject: [PATCH] shader/decode: Remove extras from MetaTexture
---
src/video_core/engines/shader_bytecode.h | 8 +--
.../renderer_opengl/gl_shader_decompiler.cpp | 56 ++++++++++++-------
src/video_core/shader/decode/texture.cpp | 37 +++++++-----
src/video_core/shader/shader_ir.h | 4 +-
4 files changed, 65 insertions(+), 40 deletions(-)
diff --git a/src/video_core/engines/shader_bytecode.h b/src/video_core/engines/shader_bytecode.h
index d14cd5f20..f62ae8801 100644
--- a/src/video_core/engines/shader_bytecode.h
+++ b/src/video_core/engines/shader_bytecode.h
@@ -325,11 +325,11 @@ enum class TextureQueryType : u64 {
enum class TextureProcessMode : u64 {
None = 0,
- LZ = 1, // Unknown, appears to be the same as none.
+ LZ = 1, // Load LOD of zero.
LB = 2, // Load Bias.
- LL = 3, // Load LOD (LevelOfDetail)
- LBA = 6, // Load Bias. The A is unknown, does not appear to differ with LB
- LLA = 7 // Load LOD. The A is unknown, does not appear to differ with LL
+ LL = 3, // Load LOD.
+ LBA = 6, // Load Bias. The A is unknown, does not appear to differ with LB.
+ LLA = 7 // Load LOD. The A is unknown, does not appear to differ with LL.
};
enum class TextureMiscMode : u64 {
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index 72ff6ac6a..11d1169f0 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -5,7 +5,9 @@
#include <array>
#include <string>
#include <string_view>
+#include <utility>
#include <variant>
+#include <vector>
#include <fmt/format.h>
@@ -717,7 +719,7 @@ private:
}
std::string GenerateTexture(Operation operation, const std::string& func,
- bool is_extra_int = false) {
+ const std::vector<std::pair<Type, Node>>& extras) {
constexpr std::array<const char*, 4> coord_constructors = {"float", "vec2", "vec3", "vec4"};
const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
@@ -738,36 +740,47 @@ private:
expr += Visit(operation[i]);
const std::size_t next = i + 1;
- if (next < count || has_array || has_shadow)
+ if (next < count)
expr += ", ";
}
if (has_array) {
- expr += "float(ftoi(" + Visit(meta->array) + "))";
+ expr += ", float(ftoi(" + Visit(meta->array) + "))";
}
if (has_shadow) {
- if (has_array)
- expr += ", ";
- expr += Visit(meta->depth_compare);
+ expr += ", " + Visit(meta->depth_compare);
}
expr += ')';
- for (const Node extra : meta->extras) {
+ for (const auto& extra_pair : extras) {
+ const auto [type, operand] = extra_pair;
+ if (operand == nullptr) {
+ continue;
+ }
expr += ", ";
- if (is_extra_int) {
- if (const auto immediate = std::get_if<ImmediateNode>(extra)) {
+
+ switch (type) {
+ case Type::Int:
+ if (const auto immediate = std::get_if<ImmediateNode>(operand)) {
// Inline the string as an immediate integer in GLSL (some extra arguments are
// required to be constant)
expr += std::to_string(static_cast<s32>(immediate->GetValue()));
} else {
- expr += "ftoi(" + Visit(extra) + ')';
+ expr += "ftoi(" + Visit(operand) + ')';
}
- } else {
- expr += Visit(extra);
+ break;
+ case Type::Float:
+ expr += Visit(operand);
+ break;
+ default: {
+ const auto type_int = static_cast<u32>(type);
+ UNIMPLEMENTED_MSG("Unimplemented extra type={}", type_int);
+ expr += '0';
+ break;
+ }
}
}
- expr += ')';
- return expr;
+ return expr + ')';
}
std::string Assign(Operation operation) {
@@ -1146,7 +1159,7 @@ private:
const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
ASSERT(meta);
- std::string expr = GenerateTexture(operation, "texture");
+ std::string expr = GenerateTexture(operation, "texture", {{Type::Float, meta->bias}});
if (meta->sampler.IsShadow()) {
expr = "vec4(" + expr + ')';
}
@@ -1157,7 +1170,7 @@ private:
const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
ASSERT(meta);
- std::string expr = GenerateTexture(operation, "textureLod");
+ std::string expr = GenerateTexture(operation, "textureLod", {{Type::Float, meta->lod}});
if (meta->sampler.IsShadow()) {
expr = "vec4(" + expr + ')';
}
@@ -1168,7 +1181,8 @@ private:
const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
ASSERT(meta);
- return GenerateTexture(operation, "textureGather", !meta->sampler.IsShadow()) +
+ const auto type = meta->sampler.IsShadow() ? Type::Float : Type::Int;
+ return GenerateTexture(operation, "textureGather", {{type, meta->component}}) +
GetSwizzle(meta->element);
}
@@ -1197,8 +1211,8 @@ private:
ASSERT(meta);
if (meta->element < 2) {
- return "itof(int((" + GenerateTexture(operation, "textureQueryLod") + " * vec2(256))" +
- GetSwizzle(meta->element) + "))";
+ return "itof(int((" + GenerateTexture(operation, "textureQueryLod", {}) +
+ " * vec2(256))" + GetSwizzle(meta->element) + "))";
}
return "0";
}
@@ -1224,9 +1238,9 @@ private:
else if (next < count)
expr += ", ";
}
- for (std::size_t i = 0; i < meta->extras.size(); ++i) {
+ if (meta->lod) {
expr += ", ";
- expr += CastOperand(Visit(meta->extras.at(i)), Type::Int);
+ expr += CastOperand(Visit(meta->lod), Type::Int);
}
expr += ')';
diff --git a/src/video_core/shader/decode/texture.cpp b/src/video_core/shader/decode/texture.cpp
index 50e2d0584..a99ae19bf 100644
--- a/src/video_core/shader/decode/texture.cpp
+++ b/src/video_core/shader/decode/texture.cpp
@@ -119,8 +119,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
coords.push_back(op_a);
coords.push_back(op_b);
}
- std::vector<Node> extras;
- extras.push_back(Immediate(static_cast<u32>(instr.tld4s.component)));
+ const Node component = Immediate(static_cast<u32>(instr.tld4s.component));
const auto& sampler =
GetSampler(instr.sampler, TextureType::Texture2D, false, depth_compare);
@@ -128,7 +127,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
- MetaTexture meta{sampler, {}, {}, extras, element};
+ MetaTexture meta{sampler, {}, {}, {}, {}, component, element};
values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
}
@@ -153,7 +152,7 @@ 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));
SetTemporal(bb, indexer++, value);
@@ -203,7 +202,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
for (u32 element = 0; element < 2; ++element) {
auto params = coords;
- MetaTexture meta{sampler, {}, {}, {}, element};
+ MetaTexture meta{sampler, {}, {}, {}, {}, {}, element};
const Node value = Operation(OperationCode::TextureQueryLod, meta, std::move(params));
SetTemporal(bb, element, value);
}
@@ -347,25 +346,35 @@ Node4 ShaderIR::GetTextureCode(Instruction instr, TextureType texture_type,
(texture_type == Tegra::Shader::TextureType::TextureCube && is_array && is_shadow));
const OperationCode read_method =
- lod_needed && gl_lod_supported ? OperationCode::TextureLod : OperationCode::Texture;
+ (lod_needed && gl_lod_supported) ? OperationCode::TextureLod : OperationCode::Texture;
UNIMPLEMENTED_IF(process_mode != TextureProcessMode::None && !gl_lod_supported);
- std::vector<Node> extras;
+ Node bias = {};
+ Node lod = {};
if (process_mode != TextureProcessMode::None && gl_lod_supported) {
- if (process_mode == TextureProcessMode::LZ) {
- extras.push_back(Immediate(0.0f));
- } else {
+ switch (process_mode) {
+ case TextureProcessMode::LZ:
+ lod = Immediate(0.0f);
+ break;
+ case TextureProcessMode::LB:
// If present, lod or bias are always stored in the register indexed by the gpr20
// field with an offset depending on the usage of the other registers
- extras.push_back(GetRegister(instr.gpr20.Value() + bias_offset));
+ bias = GetRegister(instr.gpr20.Value() + bias_offset);
+ break;
+ case TextureProcessMode::LL:
+ lod = GetRegister(instr.gpr20.Value() + bias_offset);
+ break;
+ default:
+ UNIMPLEMENTED_MSG("Unimplemented process mode={}", static_cast<u32>(process_mode));
+ break;
}
}
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto copy_coords = coords;
- MetaTexture meta{sampler, array, depth_compare, extras, element};
+ MetaTexture meta{sampler, array, depth_compare, bias, lod, {}, element};
values[element] = Operation(read_method, meta, std::move(copy_coords));
}
@@ -462,7 +471,7 @@ Node4 ShaderIR::GetTld4Code(Instruction instr, TextureType texture_type, bool de
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
- MetaTexture meta{sampler, GetRegister(array_register), {}, {}, element};
+ MetaTexture meta{sampler, GetRegister(array_register), {}, {}, {}, {}, element};
values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
}
@@ -498,7 +507,7 @@ 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;
diff --git a/src/video_core/shader/shader_ir.h b/src/video_core/shader/shader_ir.h
index 0548c46f0..5bc3a3900 100644
--- a/src/video_core/shader/shader_ir.h
+++ b/src/video_core/shader/shader_ir.h
@@ -290,7 +290,9 @@ struct MetaTexture {
const Sampler& sampler;
Node array{};
Node depth_compare{};
- std::vector<Node> extras;
+ Node bias{};
+ Node lod{};
+ Node component{};
u32 element{};
};