VideoCommon: add constant value to set the allowed maximum number of pixel samplers

Source/Core/DolphinLib.props

@@ -635,6 +635,7 @@
     <ClInclude Include="VideoCommon\BPStructs.h" />
     <ClInclude Include="VideoCommon\CommandProcessor.h" />
     <ClInclude Include="VideoCommon\ConstantManager.h" />
+    <ClInclude Include="VideoCommon\Constants.h" />
     <ClInclude Include="VideoCommon\CPMemory.h" />
     <ClInclude Include="VideoCommon\CPUCull.h" />
     <ClInclude Include="VideoCommon\CPUCullImpl.h" />

Source/Core/VideoBackends/D3D/D3DState.cpp

@@ -205,7 +205,7 @@ u32 StateManager::UnsetTexture(ID3D11ShaderResourceView* srv)
 {
   u32 mask = 0;
 
-  for (u32 index = 0; index < 8; ++index)
+  for (u32 index = 0; index < VideoCommon::MAX_PIXEL_SHADER_SAMPLERS; ++index)
   {
     if (m_current.textures[index] == srv)
     {

Source/Core/VideoBackends/D3D/D3DState.h

@@ -12,6 +12,7 @@
 #include "Common/BitField.h"
 #include "Common/CommonTypes.h"
 #include "VideoBackends/D3D/D3DBase.h"
+#include "VideoCommon/Constants.h"
 #include "VideoCommon/RenderState.h"
 
 namespace DX11
@@ -263,8 +264,8 @@ private:
 
   struct Resources
   {
-    std::array<ID3D11ShaderResourceView*, 8> textures;
+    std::array<ID3D11ShaderResourceView*, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS> textures;
-    std::array<ID3D11SamplerState*, 8> samplers;
+    std::array<ID3D11SamplerState*, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS> samplers;
     std::array<ID3D11Buffer*, 2> pixelConstants;
     ID3D11Buffer* vertexConstants;
     ID3D11Buffer* geometryConstants;

Source/Core/VideoBackends/D3D12/D3D12Gfx.cpp

@@ -33,8 +33,7 @@ Gfx::Gfx(std::unique_ptr<SwapChain> swap_chain, float backbuffer_scale)
 {
   m_state.root_signature = g_dx_context->GetGXRootSignature();
 
-  // Textures must be populated with null descriptors, since we copy directly from this array.
+  for (u32 i = 0; i < VideoCommon::MAX_PIXEL_SHADER_SAMPLERS; i++)
-  for (u32 i = 0; i < MAX_TEXTURES; i++)
   {
     m_state.textures[i].ptr = g_dx_context->GetNullSRVDescriptor().cpu_handle.ptr;
     m_state.samplers.states[i] = RenderState::GetPointSamplerState();
@@ -301,7 +300,7 @@ void Gfx::UnbindTexture(const AbstractTexture* texture)
 {
   const auto srv_shadow_descriptor =
       static_cast<const DXTexture*>(texture)->GetSRVDescriptor().cpu_handle;
-  for (u32 i = 0; i < MAX_TEXTURES; i++)
+  for (u32 i = 0; i < VideoCommon::MAX_PIXEL_SHADER_SAMPLERS; i++)
   {
     if (m_state.textures[i].ptr == srv_shadow_descriptor.ptr)
     {
@@ -666,15 +665,17 @@ void Gfx::UpdateDescriptorTables()
 
 bool Gfx::UpdateSRVDescriptorTable()
 {
-  static constexpr std::array<UINT, MAX_TEXTURES> src_sizes = {1, 1, 1, 1, 1, 1, 1, 1};
+  static constexpr std::array<UINT, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS> src_sizes = {
+      1, 1, 1, 1, 1, 1, 1, 1};
   DescriptorHandle dst_base_handle;
   const UINT dst_handle_sizes = 8;
-  if (!g_dx_context->GetDescriptorAllocator()->Allocate(MAX_TEXTURES, &dst_base_handle))
+  if (!g_dx_context->GetDescriptorAllocator()->Allocate(VideoCommon::MAX_PIXEL_SHADER_SAMPLERS,
+                                                        &dst_base_handle))
     return false;
 
   g_dx_context->GetDevice()->CopyDescriptors(
-      1, &dst_base_handle.cpu_handle, &dst_handle_sizes, MAX_TEXTURES, m_state.textures.data(),
+      1, &dst_base_handle.cpu_handle, &dst_handle_sizes, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS,
-      src_sizes.data(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
+      m_state.textures.data(), src_sizes.data(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
   m_state.srv_descriptor_base = dst_base_handle.gpu_handle;
   m_dirty_bits = (m_dirty_bits & ~DirtyState_Textures) | DirtyState_SRV_Descriptor;
   return true;

Source/Core/VideoBackends/D3D12/D3D12Gfx.h

@@ -7,6 +7,7 @@
 #include "VideoBackends/D3D12/DescriptorAllocator.h"
 #include "VideoBackends/D3D12/DescriptorHeapManager.h"
 #include "VideoCommon/AbstractGfx.h"
+#include "VideoCommon/Constants.h"
 
 namespace DX12
 {
@@ -96,7 +97,6 @@ protected:
   void OnConfigChanged(u32 bits) override;
 
 private:
-  static const u32 MAX_TEXTURES = 8;
   static const u32 NUM_CONSTANT_BUFFERS = 3;
 
   // Dirty bits
@@ -158,7 +158,7 @@ private:
     ID3D12RootSignature* root_signature = nullptr;
     DXShader* compute_shader = nullptr;
     std::array<D3D12_GPU_VIRTUAL_ADDRESS, 3> constant_buffers = {};
-    std::array<D3D12_CPU_DESCRIPTOR_HANDLE, MAX_TEXTURES> textures = {};
+    std::array<D3D12_CPU_DESCRIPTOR_HANDLE, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS> textures = {};
     D3D12_CPU_DESCRIPTOR_HANDLE vs_srv = {};
     D3D12_CPU_DESCRIPTOR_HANDLE ps_uav = {};
     SamplerStateSet samplers = {};

Source/Core/VideoBackends/D3D12/DX12Context.cpp

@@ -334,8 +334,8 @@ bool DXContext::CreateGXRootSignature()
 {
   // GX:
   //  - 3 constant buffers (bindings 0-2), 0/1 visible in PS, 2 visible in VS, 1 visible in GS.
-  //  - 8 textures (visible in PS).
+  //  - VideoCommon::MAX_PIXEL_SHADER_SAMPLERS textures (visible in PS).
-  //  - 8 samplers (visible in PS).
+  //  - VideoCommon::MAX_PIXEL_SHADER_SAMPLERS samplers (visible in PS).
   //  - 1 UAV (visible in PS).
 
   std::array<D3D12_ROOT_PARAMETER, NUM_ROOT_PARAMETERS> params;
@@ -344,10 +344,10 @@ bool DXContext::CreateGXRootSignature()
   SetRootParamCBV(&params[param_count], 0, D3D12_SHADER_VISIBILITY_PIXEL);
   param_count++;
   SetRootParamTable(&params[param_count], &ranges[param_count], D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 0,
-                    8, D3D12_SHADER_VISIBILITY_PIXEL);
+                    VideoCommon::MAX_PIXEL_SHADER_SAMPLERS, D3D12_SHADER_VISIBILITY_PIXEL);
   param_count++;
   SetRootParamTable(&params[param_count], &ranges[param_count], D3D12_DESCRIPTOR_RANGE_TYPE_SAMPLER,
-                    0, 8, D3D12_SHADER_VISIBILITY_PIXEL);
+                    0, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS, D3D12_SHADER_VISIBILITY_PIXEL);
   param_count++;
   SetRootParamCBV(&params[param_count], 0, D3D12_SHADER_VISIBILITY_VERTEX);
   param_count++;

Source/Core/VideoBackends/D3D12/DescriptorAllocator.cpp

@@ -86,23 +86,23 @@ bool SamplerAllocator::GetGroupHandle(const SamplerStateSet& sss,
 
   // Allocate a group of descriptors.
   DescriptorHandle allocation;
-  if (!Allocate(SamplerStateSet::NUM_SAMPLERS_PER_GROUP, &allocation))
+  if (!Allocate(VideoCommon::MAX_PIXEL_SHADER_SAMPLERS, &allocation))
     return false;
 
   // Lookup sampler handles from global cache.
-  std::array<D3D12_CPU_DESCRIPTOR_HANDLE, SamplerStateSet::NUM_SAMPLERS_PER_GROUP> source_handles;
+  std::array<D3D12_CPU_DESCRIPTOR_HANDLE, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS> source_handles;
-  for (u32 i = 0; i < SamplerStateSet::NUM_SAMPLERS_PER_GROUP; i++)
+  for (u32 i = 0; i < VideoCommon::MAX_PIXEL_SHADER_SAMPLERS; i++)
   {
     if (!g_dx_context->GetSamplerHeapManager().Lookup(sss.states[i], &source_handles[i]))
       return false;
   }
 
   // Copy samplers from the sampler heap.
-  static constexpr std::array<UINT, SamplerStateSet::NUM_SAMPLERS_PER_GROUP> source_sizes = {
+  static constexpr std::array<UINT, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS> source_sizes = {
       {1, 1, 1, 1, 1, 1, 1, 1}};
   g_dx_context->GetDevice()->CopyDescriptors(
-      1, &allocation.cpu_handle, &SamplerStateSet::NUM_SAMPLERS_PER_GROUP,
+      1, &allocation.cpu_handle, &VideoCommon::MAX_PIXEL_SHADER_SAMPLERS,
-      SamplerStateSet::NUM_SAMPLERS_PER_GROUP, source_handles.data(), source_sizes.data(),
+      VideoCommon::MAX_PIXEL_SHADER_SAMPLERS, source_handles.data(), source_sizes.data(),
       D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER);
   *handle = allocation.gpu_handle;
   m_sampler_map.emplace(sss, allocation.gpu_handle);

Source/Core/VideoBackends/D3D12/DescriptorAllocator.h

@@ -5,6 +5,7 @@
 
 #include <map>
 #include "VideoBackends/D3D12/DescriptorHeapManager.h"
+#include "VideoCommon/Constants.h"
 
 namespace DX12
 {
@@ -34,8 +35,7 @@ protected:
 
 struct SamplerStateSet final
 {
-  static const u32 NUM_SAMPLERS_PER_GROUP = 8;
+  SamplerState states[VideoCommon::MAX_PIXEL_SHADER_SAMPLERS];
-  SamplerState states[NUM_SAMPLERS_PER_GROUP];
 };
 
 bool operator==(const SamplerStateSet& lhs, const SamplerStateSet& rhs);

Source/Core/VideoBackends/OGL/OGLGfx.h

@@ -4,6 +4,7 @@
 #pragma once
 
 #include "VideoCommon/AbstractGfx.h"
+#include "VideoCommon/Constants.h"
 
 class GLContext;
 
@@ -100,7 +101,7 @@ private:
 
   std::unique_ptr<GLContext> m_main_gl_context;
   std::unique_ptr<OGLFramebuffer> m_system_framebuffer;
-  std::array<const OGLTexture*, 8> m_bound_textures{};
+  std::array<const OGLTexture*, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS> m_bound_textures{};
   AbstractTexture* m_bound_image_texture = nullptr;
   RasterizationState m_current_rasterization_state;
   DepthState m_current_depth_state;

Source/Core/VideoBackends/OGL/SamplerCache.h

@@ -9,6 +9,7 @@
 
 #include "Common/CommonTypes.h"
 #include "Common/GL/GLUtil.h"
+#include "VideoCommon/Constants.h"
 #include "VideoCommon/RenderState.h"
 
 namespace OGL
@@ -35,7 +36,8 @@ private:
   static void SetParameters(GLuint sampler_id, const SamplerState& params);
 
   std::map<SamplerState, GLuint> m_cache;
-  std::array<std::pair<SamplerState, GLuint>, 8> m_active_samplers{};
+  std::array<std::pair<SamplerState, GLuint>, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS>
+      m_active_samplers{};
 
   GLuint m_point_sampler;
   GLuint m_linear_sampler;

Source/Core/VideoBackends/Vulkan/CommandBufferManager.cpp

@@ -11,6 +11,7 @@
 #include "Common/Thread.h"
 
 #include "VideoBackends/Vulkan/VulkanContext.h"
+#include "VideoCommon/Constants.h"
 
 namespace Vulkan
 {
@@ -148,14 +149,17 @@ VkDescriptorPool CommandBufferManager::CreateDescriptorPool(u32 max_descriptor_s
   /*
    * Worst case descriptor counts according to the descriptor layout created in ObjectCache.cpp:
    * UNIFORM_BUFFER_DYNAMIC: 3
-   * COMBINED_IMAGE_SAMPLER: 18
+   * COMBINED_IMAGE_SAMPLER: NUM_UTILITY_PIXEL_SAMPLERS + NUM_COMPUTE_SHADER_SAMPLERS +
+   * VideoCommon::MAX_PIXEL_SHADER_SAMPLERS
    * STORAGE_BUFFER: 2
    * UNIFORM_TEXEL_BUFFER: 3
    * STORAGE_IMAGE: 1
    */
   const std::array<VkDescriptorPoolSize, 5> pool_sizes{{
       {VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, max_descriptor_sets * 3},
-      {VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, max_descriptor_sets * 18},
+      {VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
+       max_descriptor_sets * (VideoCommon::MAX_PIXEL_SHADER_SAMPLERS + NUM_COMPUTE_SHADER_SAMPLERS +
+                              NUM_UTILITY_PIXEL_SAMPLERS)},
       {VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, max_descriptor_sets * 2},
       {VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, max_descriptor_sets * 3},
       {VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, max_descriptor_sets * 1},

Source/Core/VideoBackends/Vulkan/Constants.h

@@ -78,8 +78,8 @@ enum UNIFORM_BUFFER_DESCRIPTOR_SET_BINDING
 constexpr u32 MAX_VERTEX_ATTRIBUTES = 16;
 
 // Number of pixel shader texture slots
-constexpr u32 NUM_PIXEL_SHADER_SAMPLERS = 8;
 constexpr u32 NUM_COMPUTE_SHADER_SAMPLERS = 2;
+constexpr u32 NUM_UTILITY_PIXEL_SAMPLERS = 8;
 
 // Number of texel buffer binding points.
 constexpr u32 NUM_COMPUTE_TEXEL_BUFFERS = 2;

Source/Core/VideoBackends/Vulkan/ObjectCache.cpp

@@ -21,6 +21,7 @@
 #include "VideoBackends/Vulkan/VKTexture.h"
 #include "VideoBackends/Vulkan/VKVertexFormat.h"
 #include "VideoBackends/Vulkan/VulkanContext.h"
+#include "VideoCommon/Constants.h"
 #include "VideoCommon/VideoCommon.h"
 
 namespace Vulkan
@@ -119,8 +120,8 @@ bool ObjectCache::CreateDescriptorSetLayouts()
   }};
 
   static const std::array<VkDescriptorSetLayoutBinding, 1> standard_sampler_bindings{{
-      {0, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, static_cast<u32>(NUM_PIXEL_SHADER_SAMPLERS),
+      {0, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
-       VK_SHADER_STAGE_FRAGMENT_BIT},
+       static_cast<u32>(VideoCommon::MAX_PIXEL_SHADER_SAMPLERS), VK_SHADER_STAGE_FRAGMENT_BIT},
   }};
 
   // The dynamic veretex loader's vertex buffer must be last here, for similar reasons

Source/Core/VideoBackends/Vulkan/StateTracker.cpp

@@ -13,6 +13,7 @@
 #include "VideoBackends/Vulkan/VKTexture.h"
 #include "VideoBackends/Vulkan/VKVertexFormat.h"
 #include "VideoBackends/Vulkan/VulkanContext.h"
+#include "VideoCommon/Constants.h"
 
 namespace Vulkan
 {
@@ -65,7 +66,7 @@ bool StateTracker::Initialize()
                                       VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
 
   // Initialize all samplers to point by default
-  for (size_t i = 0; i < NUM_PIXEL_SHADER_SAMPLERS; i++)
+  for (size_t i = 0; i < VideoCommon::MAX_PIXEL_SHADER_SAMPLERS; i++)
   {
     m_bindings.samplers[i].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
     m_bindings.samplers[i].imageView = m_dummy_texture->GetView();
@@ -498,7 +499,7 @@ void StateTracker::UpdateGXDescriptorSet()
                             m_gx_descriptor_sets[1],
                             0,
                             0,
-                            static_cast<u32>(NUM_PIXEL_SHADER_SAMPLERS),
+                            static_cast<u32>(VideoCommon::MAX_PIXEL_SHADER_SAMPLERS),
                             VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
                             m_bindings.samplers.data(),
                             nullptr,
@@ -602,7 +603,7 @@ void StateTracker::UpdateUtilityDescriptorSet()
                           m_utility_descriptor_sets[1],
                           0,
                           0,
-                          NUM_PIXEL_SHADER_SAMPLERS,
+                          NUM_UTILITY_PIXEL_SAMPLERS,
                           VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
                           m_bindings.samplers.data(),
                           nullptr,

Source/Core/VideoBackends/Vulkan/StateTracker.h

@@ -9,6 +9,7 @@
 
 #include "Common/CommonTypes.h"
 #include "VideoBackends/Vulkan/Constants.h"
+#include "VideoCommon/Constants.h"
 
 namespace Vulkan
 {
@@ -141,7 +142,7 @@ private:
     std::array<u32, NUM_UBO_DESCRIPTOR_SET_BINDINGS> gx_ubo_offsets;
     VkDescriptorBufferInfo utility_ubo_binding;
     u32 utility_ubo_offset;
-    std::array<VkDescriptorImageInfo, NUM_PIXEL_SHADER_SAMPLERS> samplers;
+    std::array<VkDescriptorImageInfo, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS> samplers;
     std::array<VkBufferView, NUM_COMPUTE_TEXEL_BUFFERS> texel_buffers;
     VkDescriptorBufferInfo ssbo;
     VkDescriptorBufferInfo gx_uber_vertex_ssbo;

Source/Core/VideoBackends/Vulkan/VKGfx.h

@@ -10,6 +10,7 @@
 #include "Common/CommonTypes.h"
 #include "VideoBackends/Vulkan/Constants.h"
 #include "VideoCommon/AbstractGfx.h"
+#include "VideoCommon/Constants.h"
 
 namespace Vulkan
 {
@@ -96,6 +97,6 @@ private:
   float m_backbuffer_scale;
 
   // Keep a copy of sampler states to avoid cache lookups every draw
-  std::array<SamplerState, NUM_PIXEL_SHADER_SAMPLERS> m_sampler_states = {};
+  std::array<SamplerState, VideoCommon::MAX_PIXEL_SHADER_SAMPLERS> m_sampler_states = {};
 };
 }  // namespace Vulkan

Source/Core/VideoCommon/CMakeLists.txt

@@ -23,6 +23,7 @@ add_library(videocommon
   CommandProcessor.cpp
   CommandProcessor.h
   ConstantManager.h
+  Constants.h
   CPMemory.cpp
   CPMemory.h
   CPUCull.cpp

Source/Core/VideoCommon/Constants.h

@@ -0,0 +1,11 @@
+// Copyright 2023 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "Common/CommonTypes.h"
+
+namespace VideoCommon
+{
+constexpr u32 MAX_PIXEL_SHADER_SAMPLERS = 8;
+}