From 7c530e06661d760eb6366724d109468423363072 Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Tue, 7 Jan 2020 17:45:12 -0400
Subject: [PATCH] Shader_IR: Propagate bindless index into the GL compiler.
---
.../renderer_opengl/gl_shader_decompiler.cpp | 2 +-
src/video_core/shader/decode/texture.cpp | 40 +++++++++++--------
src/video_core/shader/node.h | 2 +-
src/video_core/shader/shader_ir.h | 5 +--
src/video_core/shader/track.cpp | 29 ++++++++++++--
5 files changed, 54 insertions(+), 24 deletions(-)
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index 8b413ae9a..df681bdcb 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -1123,7 +1123,7 @@ private:
if (!meta->sampler.IsIndexed()) {
expr += '(' + GetSampler(meta->sampler) + ", ";
} else {
- expr += '(' + GetSampler(meta->sampler) + "[0], ";
+ expr += '(' + GetSampler(meta->sampler) + '[' + Visit(meta->index).AsUint() + "], ";
}
expr += coord_constructors.at(count + (has_array ? 1 : 0) +
(has_shadow && !separate_dc ? 1 : 0) - 1);
diff --git a/src/video_core/shader/decode/texture.cpp b/src/video_core/shader/decode/texture.cpp
index e7c38f5d6..31b09b18c 100644
--- a/src/video_core/shader/decode/texture.cpp
+++ b/src/video_core/shader/decode/texture.cpp
@@ -144,7 +144,8 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
Node4 values;
for (u32 element = 0; element < values.size(); ++element) {
auto coords_copy = coords;
- MetaTexture meta{sampler, {}, depth_compare, aoffi, {}, {}, {}, {}, component, element};
+ MetaTexture meta{sampler, {}, depth_compare, aoffi, {}, {},
+ {}, {}, component, element, {}};
values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
}
@@ -167,9 +168,9 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
const auto derivate_reg = instr.gpr20.Value();
const auto texture_type = instr.txd.texture_type.Value();
const auto coord_count = GetCoordCount(texture_type);
-
+ Node index_var{};
const Sampler* sampler =
- is_bindless ? GetBindlessSampler(base_reg, {{texture_type, is_array, false}})
+ is_bindless ? GetBindlessSampler(base_reg, index_var, {{texture_type, is_array, false}})
: GetSampler(instr.sampler, {{texture_type, is_array, false}});
Node4 values;
if (sampler == nullptr) {
@@ -200,7 +201,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
}
for (u32 element = 0; element < values.size(); ++element) {
- MetaTexture meta{*sampler, array_node, {}, {}, {}, derivates, {}, {}, {}, element};
+ MetaTexture meta{*sampler, array_node, {}, {}, {}, derivates, {}, {}, {}, element, index_var};
values[element] = Operation(OperationCode::TextureGradient, std::move(meta), coords);
}
@@ -215,8 +216,9 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
// TODO: The new commits on the texture refactor, change the way samplers work.
// Sadly, not all texture instructions specify the type of texture their sampler
// uses. This must be fixed at a later instance.
+ Node index_var{};
const Sampler* sampler =
- is_bindless ? GetBindlessSampler(instr.gpr8) : GetSampler(instr.sampler);
+ is_bindless ? GetBindlessSampler(instr.gpr8, index_var) : GetSampler(instr.sampler);
if (sampler == nullptr) {
u32 indexer = 0;
@@ -240,7 +242,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
if (!instr.txq.IsComponentEnabled(element)) {
continue;
}
- MetaTexture meta{*sampler, {}, {}, {}, {}, {}, {}, {}, {}, element};
+ MetaTexture meta{*sampler, {}, {}, {}, {}, {}, {}, {}, {}, element, index_var};
const Node value =
Operation(OperationCode::TextureQueryDimensions, meta,
GetRegister(instr.gpr8.Value() + (is_bindless ? 1 : 0)));
@@ -266,8 +268,9 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
auto texture_type = instr.tmml.texture_type.Value();
const bool is_array = instr.tmml.array != 0;
+ Node index_var{};
const Sampler* sampler =
- is_bindless ? GetBindlessSampler(instr.gpr20) : GetSampler(instr.sampler);
+ is_bindless ? GetBindlessSampler(instr.gpr20, index_var) : GetSampler(instr.sampler);
if (sampler == nullptr) {
u32 indexer = 0;
@@ -309,7 +312,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
continue;
}
auto params = coords;
- MetaTexture meta{*sampler, {}, {}, {}, {}, {}, {}, {}, {}, element};
+ MetaTexture meta{*sampler, {}, {}, {}, {}, {}, {}, {}, {}, element, index_var};
const Node value = Operation(OperationCode::TextureQueryLod, meta, std::move(params));
SetTemporary(bb, indexer++, value);
}
@@ -386,7 +389,7 @@ const Sampler* ShaderIR::GetSampler(const Tegra::Shader::Sampler& sampler,
info.is_buffer, false);
}
-const Sampler* ShaderIR::GetBindlessSampler(Tegra::Shader::Register reg,
+const Sampler* ShaderIR::GetBindlessSampler(Tegra::Shader::Register reg, Node& index_var,
std::optional<SamplerInfo> sampler_info) {
const Node sampler_register = GetRegister(reg);
const auto [base_node, tracked_sampler_info] =
@@ -421,6 +424,7 @@ const Sampler* ShaderIR::GetBindlessSampler(Tegra::Shader::Register reg,
} else if (const auto array_sampler_info =
std::get_if<ArraySamplerNode>(&*tracked_sampler_info)) {
const u32 base_offset = array_sampler_info->GetBaseOffset() / 4;
+ index_var = GetCustomVariable(array_sampler_info->GetIndexVar());
const auto info = GetSamplerInfo(sampler_info, base_offset);
// If this sampler has already been used, return the existing mapping.
@@ -526,8 +530,9 @@ Node4 ShaderIR::GetTextureCode(Instruction instr, TextureType texture_type,
"This method is not supported.");
const SamplerInfo info{texture_type, is_array, is_shadow, false};
- const Sampler* sampler =
- is_bindless ? GetBindlessSampler(*bindless_reg, info) : GetSampler(instr.sampler, info);
+ Node index_var{};
+ const Sampler* sampler = is_bindless ? GetBindlessSampler(*bindless_reg, index_var, info)
+ : GetSampler(instr.sampler, info);
Node4 values;
if (sampler == nullptr) {
for (u32 element = 0; element < values.size(); ++element) {
@@ -575,7 +580,8 @@ 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, index_var};
values[element] = Operation(read_method, meta, std::move(copy_coords));
}
@@ -690,7 +696,8 @@ Node4 ShaderIR::GetTld4Code(Instruction instr, TextureType texture_type, bool de
u64 parameter_register = instr.gpr20.Value();
const SamplerInfo info{texture_type, is_array, depth_compare, false};
- const Sampler* sampler = is_bindless ? GetBindlessSampler(parameter_register++, info)
+ Node index_var{};
+ const Sampler* sampler = is_bindless ? GetBindlessSampler(parameter_register++, index_var, info)
: GetSampler(instr.sampler, info);
Node4 values;
if (sampler == nullptr) {
@@ -719,7 +726,8 @@ 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, ptp, {}, {}, {}, component, element};
+ *sampler, GetRegister(array_register), dc, aoffi, ptp, {}, {}, {}, component, element,
+ index_var};
values[element] = Operation(OperationCode::TextureGather, meta, std::move(coords_copy));
}
@@ -752,7 +760,7 @@ 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));
}
@@ -802,7 +810,7 @@ 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/node.h b/src/video_core/shader/node.h
index db06767f6..d75453458 100644
--- a/src/video_core/shader/node.h
+++ b/src/video_core/shader/node.h
@@ -445,6 +445,7 @@ struct MetaTexture {
Node lod;
Node component{};
u32 element{};
+ Node index{};
};
struct MetaImage {
@@ -564,7 +565,6 @@ private:
u32 index{};
};
-
/// A 32-bits value that represents an immediate value
class ImmediateNode final {
public:
diff --git a/src/video_core/shader/shader_ir.h b/src/video_core/shader/shader_ir.h
index 2fe14e815..0421dac0c 100644
--- a/src/video_core/shader/shader_ir.h
+++ b/src/video_core/shader/shader_ir.h
@@ -328,7 +328,7 @@ private:
std::optional<SamplerInfo> sampler_info = std::nullopt);
/// Accesses a texture sampler for a bindless texture.
- const Sampler* GetBindlessSampler(Tegra::Shader::Register reg,
+ const Sampler* GetBindlessSampler(Tegra::Shader::Register reg, Node& index_var,
std::optional<SamplerInfo> sampler_info = std::nullopt);
/// Accesses an image.
@@ -394,8 +394,7 @@ private:
std::tuple<Node, u32, u32> TrackCbuf(Node tracked, const NodeBlock& code, s64 cursor) const;
- std::tuple<Node, TrackSampler> TrackSampler(Node tracked, const NodeBlock& code,
- s64 cursor) const;
+ std::tuple<Node, TrackSampler> TrackSampler(Node tracked, const NodeBlock& code, s64 cursor);
std::optional<u32> TrackImmediate(Node tracked, const NodeBlock& code, s64 cursor) const;
diff --git a/src/video_core/shader/track.cpp b/src/video_core/shader/track.cpp
index 69a677394..d449b625e 100644
--- a/src/video_core/shader/track.cpp
+++ b/src/video_core/shader/track.cpp
@@ -61,8 +61,19 @@ std::optional<std::pair<Node, Node>> DecoupleIndirectRead(const OperationNode& o
return std::nullopt;
}
+bool AmendNodeCv(std::size_t amend_index, Node node) {
+ if (const auto operation = std::get_if<OperationNode>(&*node)) {
+ operation->SetAmendIndex(amend_index);
+ return true;
+ } else if (const auto conditional = std::get_if<ConditionalNode>(&*node)) {
+ conditional->SetAmendIndex(amend_index);
+ return true;
+ }
+ return false;
+}
+
std::tuple<Node, TrackSampler> ShaderIR::TrackSampler(Node tracked, const NodeBlock& code,
- s64 cursor) const {
+ s64 cursor) {
if (const auto cbuf = std::get_if<CbufNode>(&*tracked)) {
// Constant buffer found, test if it's an immediate
const auto offset = cbuf->GetOffset();
@@ -84,9 +95,21 @@ std::tuple<Node, TrackSampler> ShaderIR::TrackSampler(Node tracked, const NodeBl
}
auto [gpr, base_offset] = *pair;
const auto offset_inm = std::get_if<ImmediateNode>(&*base_offset);
+ auto gpu_driver = locker.AccessGuestDriverProfile();
+ if (gpu_driver == nullptr) {
+ return {};
+ }
+ const u32 bindless_cv = NewCustomVariable();
+ const Node op = Operation(OperationCode::UDiv, NO_PRECISE, gpr,
+ Immediate(gpu_driver->GetTextureHandlerSize()));
+
+ const Node cv_node = GetCustomVariable(bindless_cv);
+ Node amend_op = Operation(OperationCode::Assign, cv_node, std::move(op));
+ const std::size_t amend_index = DeclareAmend(amend_op);
+ AmendNodeCv(amend_index, code[cursor]);
// TODO Implement Bindless Index custom variable
- auto track =
- MakeTrackSampler<ArraySamplerNode>(cbuf->GetIndex(), offset_inm->GetValue(), 0);
+ auto track = MakeTrackSampler<ArraySamplerNode>(cbuf->GetIndex(),
+ offset_inm->GetValue(), bindless_cv);
return {tracked, track};
}
return {};