VideoCommon: remove remnants of old custom shader feature, it will be replaced by Materials in the future

8 files changed, 10 insertions, 681 deletions

diff --git a/Source/Core/VideoCommon/CMakeLists.txt b/Source/Core/VideoCommon/CMakeLists.txt
index 69a0968e4d..6bbdcd9897 100644
--- a/Source/Core/VideoCommon/CMakeLists.txt
+++ b/Source/Core/VideoCommon/CMakeLists.txt
@@ -99,8 +99,6 @@ add_library(videocommon
   GraphicsModSystem/Runtime/Actions/SkipAction.h
   GraphicsModSystem/Runtime/CustomPipeline.cpp
   GraphicsModSystem/Runtime/CustomPipeline.h
-  GraphicsModSystem/Runtime/CustomShaderCache.cpp
-  GraphicsModSystem/Runtime/CustomShaderCache.h
   GraphicsModSystem/Runtime/FBInfo.cpp
   GraphicsModSystem/Runtime/FBInfo.h
   GraphicsModSystem/Runtime/GraphicsModAction.h
diff --git a/Source/Core/VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.cpp b/Source/Core/VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.cpp
deleted file mode 100644
index 91d4082348..0000000000
--- a/Source/Core/VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.cpp
+++ /dev/null
@@ -1,387 +0,0 @@
-// Copyright 2022 Dolphin Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include "VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.h"
-
-#include <utility>
-
-#include "VideoCommon/AbstractGfx.h"
-#include "VideoCommon/VideoConfig.h"
-#include "VideoCommon/VideoEvents.h"
-
-CustomShaderCache::CustomShaderCache()
-{
-  m_api_type = g_backend_info.api_type;
-  m_host_config.bits = ShaderHostConfig::GetCurrent().bits;
-
-  m_async_shader_compiler = g_gfx->CreateAsyncShaderCompiler();
-  m_async_shader_compiler->StartWorkerThreads(1);  // TODO
-
-  m_async_uber_shader_compiler = g_gfx->CreateAsyncShaderCompiler();
-  m_async_uber_shader_compiler->StartWorkerThreads(1);  // TODO
-
-  m_frame_end_handler = GetVideoEvents().after_frame_event.Register(
-      [this](Core::System&) { RetrieveAsyncShaders(); });
-}
-
-CustomShaderCache::~CustomShaderCache()
-{
-  if (m_async_shader_compiler)
-  {
-    m_async_shader_compiler->StopWorkerThreads();
-    m_async_shader_compiler->ClearAllWork();
-  }
-
-  if (m_async_uber_shader_compiler)
-  {
-    m_async_uber_shader_compiler->StopWorkerThreads();
-    m_async_uber_shader_compiler->ClearAllWork();
-  }
-}
-
-void CustomShaderCache::RetrieveAsyncShaders()
-{
-  m_async_shader_compiler->RetrieveWorkItems();
-  m_async_uber_shader_compiler->RetrieveWorkItems();
-}
-
-void CustomShaderCache::Reload()
-{
-  while (m_async_shader_compiler->HasPendingWork() || m_async_shader_compiler->HasCompletedWork())
-  {
-    m_async_shader_compiler->RetrieveWorkItems();
-  }
-
-  while (m_async_uber_shader_compiler->HasPendingWork() ||
-         m_async_uber_shader_compiler->HasCompletedWork())
-  {
-    m_async_uber_shader_compiler->RetrieveWorkItems();
-  }
-
-  m_ps_cache = {};
-  m_uber_ps_cache = {};
-  m_pipeline_cache = {};
-  m_uber_pipeline_cache = {};
-}
-
-std::optional<const AbstractPipeline*>
-CustomShaderCache::GetPipelineAsync(const VideoCommon::GXPipelineUid& uid,
-                                    const CustomShaderInstance& custom_shaders,
-                                    const AbstractPipelineConfig& pipeline_config)
-{
-  if (auto holder = m_pipeline_cache.GetHolder(uid, custom_shaders))
-  {
-    if (holder->pending)
-      return std::nullopt;
-    return holder->value.get();
-  }
-  AsyncCreatePipeline(uid, custom_shaders, pipeline_config);
-  return std::nullopt;
-}
-
-std::optional<const AbstractPipeline*>
-CustomShaderCache::GetPipelineAsync(const VideoCommon::GXUberPipelineUid& uid,
-                                    const CustomShaderInstance& custom_shaders,
-                                    const AbstractPipelineConfig& pipeline_config)
-{
-  if (auto holder = m_uber_pipeline_cache.GetHolder(uid, custom_shaders))
-  {
-    if (holder->pending)
-      return std::nullopt;
-    return holder->value.get();
-  }
-  AsyncCreatePipeline(uid, custom_shaders, pipeline_config);
-  return std::nullopt;
-}
-
-void CustomShaderCache::AsyncCreatePipeline(const VideoCommon::GXPipelineUid& uid,
-
-                                            const CustomShaderInstance& custom_shaders,
-                                            const AbstractPipelineConfig& pipeline_config)
-{
-  class PipelineWorkItem final : public VideoCommon::AsyncShaderCompiler::WorkItem
-  {
-  public:
-    PipelineWorkItem(CustomShaderCache* shader_cache, VideoCommon::GXPipelineUid uid,
-                     CustomShaderInstance custom_shaders, PipelineIterator iterator,
-                     AbstractPipelineConfig pipeline_config)
-        : m_shader_cache(shader_cache), m_uid(std::move(uid)), m_iterator(iterator),
-          m_config(std::move(pipeline_config)), m_custom_shaders(std::move(custom_shaders))
-    {
-      SetStagesReady();
-    }
-
-    void SetStagesReady()
-    {
-      m_stages_ready = true;
-
-      PixelShaderUid ps_uid = m_uid.ps_uid;
-      ClearUnusedPixelShaderUidBits(m_shader_cache->m_api_type, m_shader_cache->m_host_config,
-                                    &ps_uid);
-
-      if (auto holder = m_shader_cache->m_ps_cache.GetHolder(ps_uid, m_custom_shaders))
-      {
-        // If the pixel shader is no longer pending compilation
-        // and the shader compilation succeeded, set
-        // the pipeline to use the new pixel shader.
-        // Otherwise, use the existing shader.
-        if (!holder->pending && holder->value.get())
-        {
-          m_config.pixel_shader = holder->value.get();
-        }
-        m_stages_ready &= !holder->pending;
-      }
-      else
-      {
-        m_stages_ready &= false;
-        m_shader_cache->QueuePixelShaderCompile(ps_uid, m_custom_shaders);
-      }
-    }
-
-    bool Compile() override
-    {
-      if (m_stages_ready)
-      {
-        m_pipeline = g_gfx->CreatePipeline(m_config);
-      }
-      return true;
-    }
-
-    void Retrieve() override
-    {
-      if (m_stages_ready)
-      {
-        m_shader_cache->NotifyPipelineFinished(m_iterator, std::move(m_pipeline));
-      }
-      else
-      {
-        // Re-queue for next frame.
-        auto wi = m_shader_cache->m_async_shader_compiler->CreateWorkItem<PipelineWorkItem>(
-            m_shader_cache, m_uid, m_custom_shaders, m_iterator, m_config);
-        m_shader_cache->m_async_shader_compiler->QueueWorkItem(std::move(wi), 0);
-      }
-    }
-
-  private:
-    CustomShaderCache* m_shader_cache;
-    std::unique_ptr<AbstractPipeline> m_pipeline;
-    VideoCommon::GXPipelineUid m_uid;
-    PipelineIterator m_iterator;
-    AbstractPipelineConfig m_config;
-    CustomShaderInstance m_custom_shaders;
-    bool m_stages_ready;
-  };
-
-  auto list_iter = m_pipeline_cache.InsertElement(uid, custom_shaders);
-  auto work_item = m_async_shader_compiler->CreateWorkItem<PipelineWorkItem>(
-      this, uid, custom_shaders, list_iter, pipeline_config);
-  m_async_shader_compiler->QueueWorkItem(std::move(work_item), 0);
-}
-
-void CustomShaderCache::AsyncCreatePipeline(const VideoCommon::GXUberPipelineUid& uid,
-
-                                            const CustomShaderInstance& custom_shaders,
-                                            const AbstractPipelineConfig& pipeline_config)
-{
-  class PipelineWorkItem final : public VideoCommon::AsyncShaderCompiler::WorkItem
-  {
-  public:
-    PipelineWorkItem(CustomShaderCache* shader_cache, VideoCommon::GXUberPipelineUid uid,
-                     CustomShaderInstance custom_shaders, UberPipelineIterator iterator,
-                     AbstractPipelineConfig pipeline_config)
-        : m_shader_cache(shader_cache), m_uid(std::move(uid)), m_iterator(iterator),
-          m_config(std::move(pipeline_config)), m_custom_shaders(std::move(custom_shaders))
-    {
-      SetStagesReady();
-    }
-
-    void SetStagesReady()
-    {
-      m_stages_ready = true;
-
-      UberShader::PixelShaderUid ps_uid = m_uid.ps_uid;
-      ClearUnusedPixelShaderUidBits(m_shader_cache->m_api_type, m_shader_cache->m_host_config,
-                                    &ps_uid);
-
-      if (auto holder = m_shader_cache->m_uber_ps_cache.GetHolder(ps_uid, m_custom_shaders))
-      {
-        if (!holder->pending && holder->value.get())
-        {
-          m_config.pixel_shader = holder->value.get();
-        }
-        m_stages_ready &= !holder->pending;
-      }
-      else
-      {
-        m_stages_ready &= false;
-        m_shader_cache->QueuePixelShaderCompile(ps_uid, m_custom_shaders);
-      }
-    }
-
-    bool Compile() override
-    {
-      if (m_stages_ready)
-      {
-        if (m_config.pixel_shader == nullptr || m_config.vertex_shader == nullptr)
-          return false;
-
-        m_pipeline = g_gfx->CreatePipeline(m_config);
-      }
-      return true;
-    }
-
-    void Retrieve() override
-    {
-      if (m_stages_ready)
-      {
-        m_shader_cache->NotifyPipelineFinished(m_iterator, std::move(m_pipeline));
-      }
-      else
-      {
-        // Re-queue for next frame.
-        auto wi = m_shader_cache->m_async_uber_shader_compiler->CreateWorkItem<PipelineWorkItem>(
-            m_shader_cache, m_uid, m_custom_shaders, m_iterator, m_config);
-        m_shader_cache->m_async_uber_shader_compiler->QueueWorkItem(std::move(wi), 0);
-      }
-    }
-
-  private:
-    CustomShaderCache* m_shader_cache;
-    std::unique_ptr<AbstractPipeline> m_pipeline;
-    VideoCommon::GXUberPipelineUid m_uid;
-    UberPipelineIterator m_iterator;
-    AbstractPipelineConfig m_config;
-    CustomShaderInstance m_custom_shaders;
-    bool m_stages_ready;
-  };
-
-  auto list_iter = m_uber_pipeline_cache.InsertElement(uid, custom_shaders);
-  auto work_item = m_async_uber_shader_compiler->CreateWorkItem<PipelineWorkItem>(
-      this, uid, custom_shaders, list_iter, pipeline_config);
-  m_async_uber_shader_compiler->QueueWorkItem(std::move(work_item), 0);
-}
-
-void CustomShaderCache::NotifyPipelineFinished(PipelineIterator iterator,
-                                               std::unique_ptr<AbstractPipeline> pipeline)
-{
-  iterator->second.pending = false;
-  iterator->second.value = std::move(pipeline);
-}
-
-void CustomShaderCache::NotifyPipelineFinished(UberPipelineIterator iterator,
-                                               std::unique_ptr<AbstractPipeline> pipeline)
-{
-  iterator->second.pending = false;
-  iterator->second.value = std::move(pipeline);
-}
-
-void CustomShaderCache::QueuePixelShaderCompile(const PixelShaderUid& uid,
-
-                                                const CustomShaderInstance& custom_shaders)
-{
-  class PixelShaderWorkItem final : public VideoCommon::AsyncShaderCompiler::WorkItem
-  {
-  public:
-    PixelShaderWorkItem(CustomShaderCache* shader_cache, const PixelShaderUid& uid,
-                        CustomShaderInstance custom_shaders, PixelShaderIterator iter)
-        : m_shader_cache(shader_cache), m_uid(uid), m_custom_shaders(std::move(custom_shaders)),
-          m_iter(iter)
-    {
-    }
-
-    bool Compile() override
-    {
-      m_shader = m_shader_cache->CompilePixelShader(m_uid, m_custom_shaders);
-      return true;
-    }
-
-    void Retrieve() override
-    {
-      m_shader_cache->NotifyPixelShaderFinished(m_iter, std::move(m_shader));
-    }
-
-  private:
-    CustomShaderCache* m_shader_cache;
-    std::unique_ptr<AbstractShader> m_shader;
-    PixelShaderUid m_uid;
-    CustomShaderInstance m_custom_shaders;
-    PixelShaderIterator m_iter;
-  };
-
-  auto list_iter = m_ps_cache.InsertElement(uid, custom_shaders);
-  auto work_item = m_async_shader_compiler->CreateWorkItem<PixelShaderWorkItem>(
-      this, uid, custom_shaders, list_iter);
-  m_async_shader_compiler->QueueWorkItem(std::move(work_item), 0);
-}
-
-void CustomShaderCache::QueuePixelShaderCompile(const UberShader::PixelShaderUid& uid,
-
-                                                const CustomShaderInstance& custom_shaders)
-{
-  class PixelShaderWorkItem final : public VideoCommon::AsyncShaderCompiler::WorkItem
-  {
-  public:
-    PixelShaderWorkItem(CustomShaderCache* shader_cache, const UberShader::PixelShaderUid& uid,
-                        CustomShaderInstance custom_shaders, UberPixelShaderIterator iter)
-        : m_shader_cache(shader_cache), m_uid(uid), m_custom_shaders(std::move(custom_shaders)),
-          m_iter(iter)
-    {
-    }
-
-    bool Compile() override
-    {
-      m_shader = m_shader_cache->CompilePixelShader(m_uid, m_custom_shaders);
-      return true;
-    }
-
-    void Retrieve() override
-    {
-      m_shader_cache->NotifyPixelShaderFinished(m_iter, std::move(m_shader));
-    }
-
-  private:
-    CustomShaderCache* m_shader_cache;
-    std::unique_ptr<AbstractShader> m_shader;
-    UberShader::PixelShaderUid m_uid;
-    CustomShaderInstance m_custom_shaders;
-    UberPixelShaderIterator m_iter;
-  };
-
-  auto list_iter = m_uber_ps_cache.InsertElement(uid, custom_shaders);
-  auto work_item = m_async_uber_shader_compiler->CreateWorkItem<PixelShaderWorkItem>(
-      this, uid, custom_shaders, list_iter);
-  m_async_uber_shader_compiler->QueueWorkItem(std::move(work_item), 0);
-}
-
-std::unique_ptr<AbstractShader>
-CustomShaderCache::CompilePixelShader(const PixelShaderUid& uid,
-                                      const CustomShaderInstance& custom_shaders) const
-{
-  const ShaderCode source_code =
-      GeneratePixelShaderCode(m_api_type, m_host_config, uid.GetUidData(), {});
-  return g_gfx->CreateShaderFromSource(ShaderStage::Pixel, source_code.GetBuffer(), nullptr,
-                                       "Custom Pixel Shader");
-}
-
-std::unique_ptr<AbstractShader>
-CustomShaderCache::CompilePixelShader(const UberShader::PixelShaderUid& uid,
-                                      const CustomShaderInstance& custom_shaders) const
-{
-  const ShaderCode source_code = GenPixelShader(m_api_type, m_host_config, uid.GetUidData());
-  return g_gfx->CreateShaderFromSource(ShaderStage::Pixel, source_code.GetBuffer(), nullptr,
-                                       "Custom Uber Pixel Shader");
-}
-
-void CustomShaderCache::NotifyPixelShaderFinished(PixelShaderIterator iterator,
-                                                  std::unique_ptr<AbstractShader> shader)
-{
-  iterator->second.pending = false;
-  iterator->second.value = std::move(shader);
-}
-
-void CustomShaderCache::NotifyPixelShaderFinished(UberPixelShaderIterator iterator,
-                                                  std::unique_ptr<AbstractShader> shader)
-{
-  iterator->second.pending = false;
-  iterator->second.value = std::move(shader);
-}
diff --git a/Source/Core/VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.h b/Source/Core/VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.h
deleted file mode 100644
index 7890cafeb6..0000000000
--- a/Source/Core/VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.h
+++ /dev/null
@@ -1,142 +0,0 @@
-// Copyright 2022 Dolphin Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <list>
-#include <map>
-#include <memory>
-#include <optional>
-
-#include "Common/HookableEvent.h"
-
-#include "VideoCommon/AbstractPipeline.h"
-#include "VideoCommon/AbstractShader.h"
-#include "VideoCommon/AsyncShaderCompiler.h"
-#include "VideoCommon/GXPipelineTypes.h"
-#include "VideoCommon/PixelShaderGen.h"
-#include "VideoCommon/ShaderGenCommon.h"
-#include "VideoCommon/UberShaderPixel.h"
-
-struct CustomShaderInstance
-{
-  CustomPixelShaderContents pixel_contents;
-
-  bool operator==(const CustomShaderInstance& other) const = default;
-};
-
-class CustomShaderCache
-{
-public:
-  CustomShaderCache();
-  ~CustomShaderCache();
-  CustomShaderCache(const CustomShaderCache&) = delete;
-  CustomShaderCache(CustomShaderCache&&) = delete;
-  CustomShaderCache& operator=(const CustomShaderCache&) = delete;
-  CustomShaderCache& operator=(CustomShaderCache&&) = delete;
-
-  // Changes the shader host config. Shaders should be reloaded afterwards.
-  void SetHostConfig(const ShaderHostConfig& host_config) { m_host_config.bits = host_config.bits; }
-
-  // Retrieves all pending shaders/pipelines from the async compiler.
-  void RetrieveAsyncShaders();
-
-  // Reloads/recreates all shaders and pipelines.
-  void Reload();
-
-  // The optional will be empty if this pipeline is now background compiling.
-  std::optional<const AbstractPipeline*>
-  GetPipelineAsync(const VideoCommon::GXPipelineUid& uid,
-                   const CustomShaderInstance& custom_shaders,
-                   const AbstractPipelineConfig& pipeline_config);
-  std::optional<const AbstractPipeline*>
-  GetPipelineAsync(const VideoCommon::GXUberPipelineUid& uid,
-                   const CustomShaderInstance& custom_shaders,
-                   const AbstractPipelineConfig& pipeline_config);
-
-private:
-  // Configuration bits.
-  APIType m_api_type = APIType::Nothing;
-  ShaderHostConfig m_host_config = {};
-  std::unique_ptr<VideoCommon::AsyncShaderCompiler> m_async_shader_compiler;
-  std::unique_ptr<VideoCommon::AsyncShaderCompiler> m_async_uber_shader_compiler;
-
-  void AsyncCreatePipeline(const VideoCommon::GXPipelineUid& uid,
-                           const CustomShaderInstance& custom_shaders,
-                           const AbstractPipelineConfig& pipeline_config);
-  void AsyncCreatePipeline(const VideoCommon::GXUberPipelineUid& uid,
-                           const CustomShaderInstance& custom_shaders,
-                           const AbstractPipelineConfig& pipeline_config);
-
-  // Shader/Pipeline cache helper
-  template <typename Uid, typename ValueType>
-  struct Cache
-  {
-    struct CacheHolder
-    {
-      std::unique_ptr<ValueType> value = nullptr;
-      bool pending = true;
-    };
-    using CacheElement = std::pair<CustomShaderInstance, CacheHolder>;
-    using CacheList = std::list<CacheElement>;
-    std::map<Uid, CacheList> uid_to_cachelist;
-
-    const CacheHolder* GetHolder(const Uid& uid, const CustomShaderInstance& custom_shaders) const
-    {
-      if (auto uuid_it = uid_to_cachelist.find(uid); uuid_it != uid_to_cachelist.end())
-      {
-        for (const auto& [custom_shader_val, holder] : uuid_it->second)
-        {
-          if (custom_shaders == custom_shader_val)
-          {
-            return &holder;
-          }
-        }
-      }
-
-      return nullptr;
-    }
-
-    typename CacheList::iterator InsertElement(const Uid& uid,
-                                               const CustomShaderInstance& custom_shaders)
-    {
-      CacheList& cachelist = uid_to_cachelist[uid];
-      CacheElement e{custom_shaders, CacheHolder{}};
-      return cachelist.emplace(cachelist.begin(), std::move(e));
-    }
-  };
-
-  Cache<PixelShaderUid, AbstractShader> m_ps_cache;
-  Cache<UberShader::PixelShaderUid, AbstractShader> m_uber_ps_cache;
-  Cache<VideoCommon::GXPipelineUid, AbstractPipeline> m_pipeline_cache;
-  Cache<VideoCommon::GXUberPipelineUid, AbstractPipeline> m_uber_pipeline_cache;
-
-  using PipelineIterator = Cache<VideoCommon::GXPipelineUid, AbstractPipeline>::CacheList::iterator;
-  using UberPipelineIterator =
-      Cache<VideoCommon::GXUberPipelineUid, AbstractPipeline>::CacheList::iterator;
-  using PixelShaderIterator = Cache<PixelShaderUid, AbstractShader>::CacheList::iterator;
-  using UberPixelShaderIterator =
-      Cache<UberShader::PixelShaderUid, AbstractShader>::CacheList::iterator;
-
-  void NotifyPipelineFinished(PipelineIterator iterator,
-                              std::unique_ptr<AbstractPipeline> pipeline);
-  void NotifyPipelineFinished(UberPipelineIterator iterator,
-                              std::unique_ptr<AbstractPipeline> pipeline);
-
-  std::unique_ptr<AbstractShader>
-  CompilePixelShader(const PixelShaderUid& uid, const CustomShaderInstance& custom_shaders) const;
-  void NotifyPixelShaderFinished(PixelShaderIterator iterator,
-                                 std::unique_ptr<AbstractShader> shader);
-  std::unique_ptr<AbstractShader>
-  CompilePixelShader(const UberShader::PixelShaderUid& uid,
-                     const CustomShaderInstance& custom_shaders) const;
-  void NotifyPixelShaderFinished(UberPixelShaderIterator iterator,
-                                 std::unique_ptr<AbstractShader> shader);
-
-  void QueuePixelShaderCompile(const PixelShaderUid& uid,
-                               const CustomShaderInstance& custom_shaders);
-  void QueuePixelShaderCompile(const UberShader::PixelShaderUid& uid,
-                               const CustomShaderInstance& custom_shaders);
-
-  Common::EventHook m_frame_end_handler;
-};
diff --git a/Source/Core/VideoCommon/GraphicsModSystem/Runtime/GraphicsModActionData.h b/Source/Core/VideoCommon/GraphicsModSystem/Runtime/GraphicsModActionData.h
index e82c87e0e4..2ea2381dd6 100644
--- a/Source/Core/VideoCommon/GraphicsModSystem/Runtime/GraphicsModActionData.h
+++ b/Source/Core/VideoCommon/GraphicsModSystem/Runtime/GraphicsModActionData.h
@@ -3,8 +3,6 @@
 
 #pragma once
 
-#include <optional>
-#include <span>
 #include <string_view>
 #include <vector>
 
@@ -13,7 +11,6 @@
 #include "Common/SmallVector.h"
 #include "VideoCommon/Assets/TextureAsset.h"
 #include "VideoCommon/Resources/MaterialResource.h"
-#include "VideoCommon/ShaderGenCommon.h"
 
 namespace GraphicsModActionData
 {
@@ -21,8 +18,6 @@ struct DrawStarted
 {
   const Common::SmallVector<u32, 8>& texture_units;
   bool* skip;
-  std::optional<CustomPixelShader>* custom_pixel_shader;
-  std::span<u8>* material_uniform_buffer;
 };
 
 struct PreEFB
diff --git a/Source/Core/VideoCommon/ShaderGenCommon.h b/Source/Core/VideoCommon/ShaderGenCommon.h
index 7d2c80f086..551aeacb6f 100644
--- a/Source/Core/VideoCommon/ShaderGenCommon.h
+++ b/Source/Core/VideoCommon/ShaderGenCommon.h
@@ -328,20 +328,3 @@ static const char s_geometry_shader_uniforms[] = "\tfloat4 " I_STEREOPARAMS ";\n
                                                  "\tfloat4 " I_LINEPTPARAMS ";\n"
                                                  "\tint4 " I_TEXOFFSET ";\n"
                                                  "\tuint vs_expand;\n";
-
-constexpr std::string_view CUSTOM_PIXELSHADER_COLOR_FUNC = "customShaderColor";
-
-struct CustomPixelShader
-{
-  std::string custom_shader;
-  std::string material_uniform_block;
-
-  bool operator==(const CustomPixelShader& other) const = default;
-};
-
-struct CustomPixelShaderContents
-{
-  std::vector<CustomPixelShader> shaders;
-
-  bool operator==(const CustomPixelShaderContents& other) const = default;
-};
diff --git a/Source/Core/VideoCommon/VertexManagerBase.cpp b/Source/Core/VideoCommon/VertexManagerBase.cpp
index 2bc6d586d7..f3f27518bf 100644
--- a/Source/Core/VideoCommon/VertexManagerBase.cpp
+++ b/Source/Core/VideoCommon/VertexManagerBase.cpp
@@ -25,7 +25,6 @@
 #include "VideoCommon/DataReader.h"
 #include "VideoCommon/FramebufferManager.h"
 #include "VideoCommon/GeometryShaderManager.h"
-#include "VideoCommon/GraphicsModSystem/Runtime/CustomShaderCache.h"
 #include "VideoCommon/GraphicsModSystem/Runtime/GraphicsModActionData.h"
 #include "VideoCommon/GraphicsModSystem/Runtime/GraphicsModManager.h"
 #include "VideoCommon/IndexGenerator.h"
@@ -124,7 +123,6 @@ bool VertexManagerBase::Initialize()
   m_after_present_event = video_events.after_present_event.Register(
       [this](const PresentInfo& pi) { m_ticks_elapsed = pi.emulated_timestamp; });
   m_index_generator.Init();
-  m_custom_shader_cache = std::make_unique<CustomShaderCache>();
   m_cpu_cull.Init();
   return true;
 }
@@ -610,25 +608,12 @@ void VertexManagerBase::Flush()
 
   if (!m_cull_all)
   {
-    CustomPixelShaderContents custom_pixel_shader_contents;
-    std::optional<CustomPixelShader> custom_pixel_shader;
-    std::vector<std::string> custom_pixel_texture_names;
-    std::span<u8> custom_pixel_shader_uniforms;
     bool skip = false;
-    for (size_t i = 0; i < texture_names.size(); i++)
+    for (const std::string& texture_name : texture_names)
     {
-      GraphicsModActionData::DrawStarted draw_started{texture_units, &skip, &custom_pixel_shader,
-                                                      &custom_pixel_shader_uniforms};
-      for (const auto& action : g_graphics_mod_manager->GetDrawStartedActions(texture_names[i]))
-      {
+      GraphicsModActionData::DrawStarted draw_started{texture_units, &skip};
+      for (const auto& action : g_graphics_mod_manager->GetDrawStartedActions(texture_name))
         action->OnDrawStarted(&draw_started);
-        if (custom_pixel_shader)
-        {
-          custom_pixel_shader_contents.shaders.push_back(*custom_pixel_shader);
-          custom_pixel_texture_names.push_back(texture_names[i]);
-        }
-        custom_pixel_shader = std::nullopt;
-      }
     }
 
     // Now the vertices can be flushed to the GPU. Everything following the CommitBuffer() call
@@ -648,18 +633,8 @@ void VertexManagerBase::Flush()
       UpdatePipelineObject();
       if (m_current_pipeline_object)
       {
-        const AbstractPipeline* pipeline_object = m_current_pipeline_object;
-        if (!custom_pixel_shader_contents.shaders.empty())
-        {
-          if (const auto custom_pipeline =
-                  GetCustomPipeline(custom_pixel_shader_contents, m_current_pipeline_config,
-                                    m_current_uber_pipeline_config, m_current_pipeline_object))
-          {
-            pipeline_object = custom_pipeline;
-          }
-        }
-        RenderDrawCall(pixel_shader_manager, geometry_shader_manager, custom_pixel_shader_contents,
-                       custom_pixel_shader_uniforms, m_current_primitive_type, pipeline_object);
+        RenderDrawCall(pixel_shader_manager, geometry_shader_manager, m_current_primitive_type,
+                       m_current_pipeline_object);
       }
     }
 
@@ -1048,27 +1023,14 @@ void VertexManagerBase::OnEndFrame()
   InvalidatePipelineObject();
 }
 
-void VertexManagerBase::NotifyCustomShaderCacheOfHostChange(const ShaderHostConfig& host_config)
-{
-  m_custom_shader_cache->SetHostConfig(host_config);
-  m_custom_shader_cache->Reload();
-}
-
-void VertexManagerBase::RenderDrawCall(
-    PixelShaderManager& pixel_shader_manager, GeometryShaderManager& geometry_shader_manager,
-    const CustomPixelShaderContents& custom_pixel_shader_contents,
-    std::span<u8> custom_pixel_shader_uniforms, PrimitiveType primitive_type,
-    const AbstractPipeline* current_pipeline)
+void VertexManagerBase::RenderDrawCall(PixelShaderManager& pixel_shader_manager,
+                                       GeometryShaderManager& geometry_shader_manager,
+                                       PrimitiveType primitive_type,
+                                       const AbstractPipeline* current_pipeline)
 {
   // Now we can upload uniforms, as nothing else will override them.
   geometry_shader_manager.SetConstants(primitive_type);
   pixel_shader_manager.SetConstants();
-  if (!custom_pixel_shader_uniforms.empty() &&
-      pixel_shader_manager.custom_constants.data() != custom_pixel_shader_uniforms.data())
-  {
-    pixel_shader_manager.custom_constants_dirty = true;
-  }
-  pixel_shader_manager.custom_constants = custom_pixel_shader_uniforms;
   UploadUniforms();
 
   g_gfx->SetPipeline(current_pipeline);
@@ -1098,70 +1060,3 @@ void VertexManagerBase::RenderDrawCall(
   if (PerfQueryBase::ShouldEmulate())
     g_perf_query->DisableQuery(bpmem.zcontrol.early_ztest ? PQG_ZCOMP_ZCOMPLOC : PQG_ZCOMP);
 }
-
-const AbstractPipeline* VertexManagerBase::GetCustomPipeline(
-    const CustomPixelShaderContents& custom_pixel_shader_contents,
-    const VideoCommon::GXPipelineUid& current_pipeline_config,
-    const VideoCommon::GXUberPipelineUid& current_uber_pipeline_config,
-    const AbstractPipeline* current_pipeline) const
-{
-  if (current_pipeline)
-  {
-    if (!custom_pixel_shader_contents.shaders.empty())
-    {
-      CustomShaderInstance custom_shaders;
-      custom_shaders.pixel_contents = custom_pixel_shader_contents;
-      switch (g_ActiveConfig.iShaderCompilationMode)
-      {
-      case ShaderCompilationMode::Synchronous:
-      case ShaderCompilationMode::AsynchronousSkipRendering:
-      {
-        if (auto pipeline = m_custom_shader_cache->GetPipelineAsync(
-                current_pipeline_config, custom_shaders, current_pipeline->m_config))
-        {
-          return *pipeline;
-        }
-      }
-      break;
-      case ShaderCompilationMode::SynchronousUberShaders:
-      {
-        // D3D has issues compiling large custom ubershaders
-        // use specialized shaders instead
-        if (g_backend_info.api_type == APIType::D3D)
-        {
-          if (auto pipeline = m_custom_shader_cache->GetPipelineAsync(
-                  current_pipeline_config, custom_shaders, current_pipeline->m_config))
-          {
-            return *pipeline;
-          }
-        }
-        else
-        {
-          if (auto pipeline = m_custom_shader_cache->GetPipelineAsync(
-                  current_uber_pipeline_config, custom_shaders, current_pipeline->m_config))
-          {
-            return *pipeline;
-          }
-        }
-      }
-      break;
-      case ShaderCompilationMode::AsynchronousUberShaders:
-      {
-        if (auto pipeline = m_custom_shader_cache->GetPipelineAsync(
-                current_pipeline_config, custom_shaders, current_pipeline->m_config))
-        {
-          return *pipeline;
-        }
-        else if (auto uber_pipeline = m_custom_shader_cache->GetPipelineAsync(
-                     current_uber_pipeline_config, custom_shaders, current_pipeline->m_config))
-        {
-          return *uber_pipeline;
-        }
-      }
-      break;
-      };
-    }
-  }
-
-  return nullptr;
-}
diff --git a/Source/Core/VideoCommon/VertexManagerBase.h b/Source/Core/VideoCommon/VertexManagerBase.h
index 715dbee692..8397efe707 100644
--- a/Source/Core/VideoCommon/VertexManagerBase.h
+++ b/Source/Core/VideoCommon/VertexManagerBase.h
@@ -15,8 +15,6 @@
 #include "VideoCommon/ShaderCache.h"
 #include "VideoCommon/VideoEvents.h"
 
-struct CustomPixelShaderContents;
-class CustomShaderCache;
 class DataReader;
 class GeometryShaderManager;
 class NativeVertexFormat;
@@ -134,7 +132,6 @@ public:
     m_current_pipeline_object = nullptr;
     m_pipeline_config_changed = true;
   }
-  void NotifyCustomShaderCacheOfHostChange(const ShaderHostConfig& host_config);
 
   // Utility pipeline drawing (e.g. EFB copies, post-processing, UI).
   virtual void UploadUtilityUniforms(const void* uniforms, u32 uniforms_size);
@@ -224,19 +221,11 @@ private:
   static constexpr u32 MINIMUM_DRAW_CALLS_PER_COMMAND_BUFFER_FOR_READBACK = 10;
 
   void RenderDrawCall(PixelShaderManager& pixel_shader_manager,
-                      GeometryShaderManager& geometry_shader_manager,
-                      const CustomPixelShaderContents& custom_pixel_shader_contents,
-                      std::span<u8> custom_pixel_shader_uniforms, PrimitiveType primitive_type,
+                      GeometryShaderManager& geometry_shader_manager, PrimitiveType primitive_type,
                       const AbstractPipeline* current_pipeline);
   void UpdatePipelineConfig();
   void UpdatePipelineObject();
 
-  const AbstractPipeline*
-  GetCustomPipeline(const CustomPixelShaderContents& custom_pixel_shader_contents,
-                    const VideoCommon::GXPipelineUid& current_pipeline_config,
-                    const VideoCommon::GXUberPipelineUid& current_uber_pipeline_confi,
-                    const AbstractPipeline* current_pipeline) const;
-
   bool m_is_flushed = true;
   FlushStatistics m_flush_statistics = {};
 
@@ -248,7 +237,6 @@ private:
   std::vector<u32> m_scheduled_command_buffer_kicks;
   bool m_allow_background_execution = true;
 
-  std::unique_ptr<CustomShaderCache> m_custom_shader_cache;
   u64 m_ticks_elapsed = 0;
 
   Common::EventHook m_frame_end_event;
diff --git a/Source/Core/VideoCommon/VideoConfig.cpp b/Source/Core/VideoCommon/VideoConfig.cpp
index c56f32c00c..1bb8796abf 100644
--- a/Source/Core/VideoCommon/VideoConfig.cpp
+++ b/Source/Core/VideoCommon/VideoConfig.cpp
@@ -390,7 +390,6 @@ void CheckForConfigChanges()
     OSD::AddMessage("Video config changed, reloading shaders.", OSD::Duration::NORMAL);
     g_gfx->WaitForGPUIdle();
     g_vertex_manager->InvalidatePipelineObject();
-    g_vertex_manager->NotifyCustomShaderCacheOfHostChange(new_host_config);
     g_shader_cache->SetHostConfig(new_host_config);
     g_shader_cache->Reload();
     g_framebuffer_manager->RecompileShaders();