GPU/Vulkan: Fix MSAA

And disable sample rate shading ("SSAA") on AMD, Intel, and broken
mobile drivers, because it doesn't work.

src/core/gpu_hw.cpp

@@ -1049,8 +1049,9 @@ void GPU_HW::DestroyPipelines()
 
 void GPU_HW::UpdateVRAMReadTexture()
 {
-  const auto scaled_rect = m_vram_dirty_rect * m_resolution_scale;
+  GL_SCOPE("UpdateVRAMReadTexture()");
 
+  const auto scaled_rect = m_vram_dirty_rect * m_resolution_scale;
   if (m_vram_texture->IsMultisampled())
   {
     if (g_gpu_device->GetFeatures().partial_msaa_resolve)

src/util/opengl_device.cpp

@@ -348,9 +348,9 @@ bool OpenGLDevice::CheckFeatures(bool* buggy_pbo)
 {
   const bool is_gles = m_gl_context->IsGLES();
 
-  // bool vendor_id_amd = false;
-  // bool vendor_id_nvidia = false;
-  //  bool vendor_id_intel = false;
+  bool vendor_id_amd = false;
+  //bool vendor_id_nvidia = false;
+  bool vendor_id_intel = false;
   bool vendor_id_arm = false;
   bool vendor_id_qualcomm = false;
   bool vendor_id_powervr = false;
@@ -361,7 +361,7 @@ bool OpenGLDevice::CheckFeatures(bool* buggy_pbo)
       std::strstr(vendor, "ATI"))
   {
     Log_InfoPrint("AMD GPU detected.");
-    // vendor_id_amd = true;
+    vendor_id_amd = true;
   }
   else if (std::strstr(vendor, "NVIDIA Corporation"))
   {
@@ -371,7 +371,7 @@ bool OpenGLDevice::CheckFeatures(bool* buggy_pbo)
   else if (std::strstr(vendor, "Intel"))
   {
     Log_InfoPrint("Intel GPU detected.");
-    // vendor_id_intel = true;
+    vendor_id_intel = true;
   }
   else if (std::strstr(vendor, "ARM"))
   {
@@ -452,7 +452,10 @@ bool OpenGLDevice::CheckFeatures(bool* buggy_pbo)
     }
   }
 
-  m_features.per_sample_shading = GLAD_GL_VERSION_4_0 || GLAD_GL_ES_VERSION_3_2 || GLAD_GL_ARB_sample_shading;
+  // Sample rate shading is broken on AMD and Intel.
+  // If AMD and Intel can't get it right, I very much doubt broken mobile drivers can.
+  m_features.per_sample_shading = (GLAD_GL_VERSION_4_0 || GLAD_GL_ES_VERSION_3_2 || GLAD_GL_ARB_sample_shading) &&
+                                  (!vendor_id_amd && !vendor_id_intel && !is_shitty_mobile_driver);
 
   // noperspective is not supported in GLSL ES.
   m_features.noperspective_interpolation = !is_gles;

src/util/vulkan_device.cpp

@@ -365,6 +365,7 @@ bool VulkanDevice::SelectDeviceFeatures()
   m_device_features.largePoints = available_features.largePoints;
   m_device_features.wideLines = available_features.wideLines;
   m_device_features.samplerAnisotropy = available_features.samplerAnisotropy;
+  m_device_features.sampleRateShading = available_features.sampleRateShading;
 
   return true;
 }
@@ -2208,7 +2209,7 @@ bool VulkanDevice::CheckFeatures()
     Log_WarningPrintf("Vulkan driver is missing dual-source blending. This will have an impact on performance.");
 
   m_features.noperspective_interpolation = true;
-  m_features.per_sample_shading = true;
+  m_features.per_sample_shading = m_device_features.sampleRateShading;
   m_features.supports_texture_buffers = true;
 
 #ifdef __APPLE__
@@ -2326,12 +2327,19 @@ void VulkanDevice::ResolveTextureRegion(GPUTexture* dst, u32 dst_x, u32 dst_y, u
   VulkanTexture* S = static_cast<VulkanTexture*>(src);
   const VkCommandBuffer cmdbuf = GetCurrentCommandBuffer();
 
-  S->CommitClear(cmdbuf);
-  D->CommitClear(cmdbuf);
+  if (S->GetState() == GPUTexture::State::Cleared)
+    S->CommitClear(cmdbuf);
+  if (D->IsRenderTargetOrDepthStencil() && D->GetState() == GPUTexture::State::Cleared)
+  {
+    if (width < dst->GetWidth() || height < dst->GetHeight())
+      D->CommitClear(cmdbuf);
+    else
+      D->SetState(GPUTexture::State::Dirty);
+  }
 
   S->TransitionSubresourcesToLayout(cmdbuf, 0, 1, 0, 1, S->GetLayout(), VulkanTexture::Layout::TransferSrc);
   D->TransitionSubresourcesToLayout(cmdbuf, dst_layer, 1, dst_level, 1, D->GetLayout(),
-                                    VulkanTexture::Layout::TransferSrc);
+                                    VulkanTexture::Layout::TransferDst);
 
   const VkImageResolve resolve = {{VK_IMAGE_ASPECT_COLOR_BIT, 0u, 0u, 1u},
                                   {static_cast<s32>(src_x), static_cast<s32>(src_y), 0},
@@ -2342,7 +2350,7 @@ void VulkanDevice::ResolveTextureRegion(GPUTexture* dst, u32 dst_x, u32 dst_y, u
                     VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &resolve);
 
   S->TransitionSubresourcesToLayout(cmdbuf, 0, 1, 0, 1, VulkanTexture::Layout::TransferSrc, S->GetLayout());
-  D->TransitionSubresourcesToLayout(cmdbuf, dst_layer, 1, dst_level, 1, VulkanTexture::Layout::TransferSrc,
+  D->TransitionSubresourcesToLayout(cmdbuf, dst_layer, 1, dst_level, 1, VulkanTexture::Layout::TransferDst,
                                     D->GetLayout());
 }
 

src/util/vulkan_texture.cpp

@@ -71,9 +71,9 @@ std::unique_ptr<VulkanTexture> VulkanTexture::Create(u32 width, u32 height, u32
                            0,
                            VK_IMAGE_TYPE_2D,
                            vk_format,
-                           {static_cast<u32>(width), static_cast<u32>(height), 1},
-                           static_cast<u32>(levels),
-                           1,
+                           {width, height, 1u},
+                           levels,
+                           layers,
                            static_cast<VkSampleCountFlagBits>(samples),
                            VK_IMAGE_TILING_OPTIMAL};
 
@@ -336,7 +336,7 @@ bool VulkanTexture::Update(u32 x, u32 y, u32 width, u32 height, const void* data
   // if we're an rt and have been cleared, and the full rect isn't being uploaded, do the clear
   if (m_type == Type::RenderTarget)
   {
-    if (x != 0 || y != 0 || width != m_width || height != m_height)
+    if (m_state == State::Cleared && (x != 0 || y != 0 || width != m_width || height != m_height))
       CommitClear(cmdbuf);
     else
       m_state = State::Dirty;
@@ -979,7 +979,8 @@ std::unique_ptr<GPUFramebuffer> VulkanDevice::CreateFramebuffer(GPUTexture* rt_o
 
   const VkRenderPass render_pass =
     GetRenderPass(RT ? RT->GetVkFormat() : VK_FORMAT_UNDEFINED, DS ? DS->GetVkFormat() : VK_FORMAT_UNDEFINED,
-                  VK_SAMPLE_COUNT_1_BIT, RT ? VK_ATTACHMENT_LOAD_OP_LOAD : VK_ATTACHMENT_LOAD_OP_DONT_CARE,
+                  static_cast<VkSampleCountFlagBits>(RT ? RT->GetSamples() : DS->GetSamples()),
+                  RT ? VK_ATTACHMENT_LOAD_OP_LOAD : VK_ATTACHMENT_LOAD_OP_DONT_CARE,
                   RT ? VK_ATTACHMENT_STORE_OP_STORE : VK_ATTACHMENT_STORE_OP_DONT_CARE,
                   DS ? VK_ATTACHMENT_LOAD_OP_LOAD : VK_ATTACHMENT_LOAD_OP_DONT_CARE,
                   DS ? VK_ATTACHMENT_STORE_OP_STORE : VK_ATTACHMENT_STORE_OP_DONT_CARE);