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Source/Core/VideoBackends/D3D/Render.cpp

@@ -578,7 +578,10 @@ void Renderer::SetViewport()
   Wd = (X + Wd <= GetTargetWidth()) ? Wd : (GetTargetWidth() - X);
   Ht = (Y + Ht <= GetTargetHeight()) ? Ht : (GetTargetHeight() - Y);
 
-  D3D11_VIEWPORT vp = CD3D11_VIEWPORT(X, Y, Wd, Ht, D3D11_MIN_DEPTH, 16777215.0f / 16777216.0f);
+  // We do depth clipping and depth range in the vertex shader instead of relying
+  // on the graphics API. However we still need to ensure depth values don't exceed
+  // the maximum value supported by the console GPU.
+  D3D11_VIEWPORT vp = CD3D11_VIEWPORT(X, Y, Wd, Ht, D3D11_MIN_DEPTH, GX_MAX_DEPTH);
   D3D::context->RSSetViewports(1, &vp);
 }
 

Source/Core/VideoBackends/D3D12/Render.cpp

@@ -482,8 +482,10 @@ void Renderer::SetViewport()
   width = (x + width <= GetTargetWidth()) ? width : (GetTargetWidth() - x);
   height = (y + height <= GetTargetHeight()) ? height : (GetTargetHeight() - y);
 
-  D3D12_VIEWPORT vp = {x, y, width, height, D3D12_MIN_DEPTH, 16777215.0f / 16777216.0f};
-
+  // We do depth clipping and depth range in the vertex shader instead of relying
+  // on the graphics API. However we still need to ensure depth values don't exceed
+  // the maximum value supported by the console GPU.
+  D3D12_VIEWPORT vp = {x, y, width, height, D3D12_MIN_DEPTH, GX_MAX_DEPTH};
   D3D::current_command_list->RSSetViewports(1, &vp);
 }
 

Source/Core/VideoBackends/OGL/Render.cpp

@@ -1159,8 +1159,12 @@ void Renderer::SetViewport()
     glViewport(iceilf(X), iceilf(Y), iceilf(Width), iceilf(Height));
   }
 
+  // Set the reversed depth range. If we do depth clipping and depth range in the
+  // vertex shader we only need to ensure depth values don't exceed the maximum
+  // value supported by the console GPU. If not, we simply clamp the near/far values
+  // themselves to the maximum value as done above.
   if (g_ActiveConfig.backend_info.bSupportsDepthClamp)
-    glDepthRangef(16777215.0f / 16777216.0f, 0.0f);
+    glDepthRangef(GX_MAX_DEPTH, 0.0f);
   else
     glDepthRangef(GLFar, GLNear);
 }