他奶奶的我直接给 imgui dx11 后端加上创建资源时错误处理

Author: Kuanlan

imgui/CMakeLists.txt

@@ -72,7 +72,8 @@ target_include_directories(imgui_impl_dx11 PUBLIC
 )
 target_sources(imgui_impl_dx11 PRIVATE
     imgui/backends/imgui_impl_dx11.h
-    imgui/backends/imgui_impl_dx11.cpp
+    #imgui/backends/imgui_impl_dx11.cpp
+    backend/imgui_impl_dx11.cpp
 )
 target_link_libraries(imgui_impl_dx11 PUBLIC
     imgui

imgui/backend/imgui_impl_dx11.cpp

@@ -303,7 +303,7 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
     ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release();
 }
 
-static void ImGui_ImplDX11_CreateFontsTexture()
+static bool ImGui_ImplDX11_CreateFontsTexture()
 {
     // Build texture atlas
     ImGuiIO& io = ImGui::GetIO();
@@ -331,8 +331,8 @@ static void ImGui_ImplDX11_CreateFontsTexture()
         subResource.pSysMem = pixels;
         subResource.SysMemPitch = desc.Width * 4;
         subResource.SysMemSlicePitch = 0;
-        bd->pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
-        IM_ASSERT(pTexture != NULL);
+        if (FAILED(bd->pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture)))
+            return false;
 
         // Create texture view
         D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
@@ -341,7 +341,12 @@ static void ImGui_ImplDX11_CreateFontsTexture()
         srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
         srvDesc.Texture2D.MipLevels = desc.MipLevels;
         srvDesc.Texture2D.MostDetailedMip = 0;
-        bd->pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &bd->pFontTextureView);
+        if (FAILED(bd->pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &bd->pFontTextureView)))
+        {
+            pTexture->Release();
+            return false;
+        }
+
         pTexture->Release();
     }
 
@@ -361,8 +366,11 @@ static void ImGui_ImplDX11_CreateFontsTexture()
         desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
         desc.MinLOD = 0.f;
         desc.MaxLOD = 0.f;
-        bd->pd3dDevice->CreateSamplerState(&desc, &bd->pFontSampler);
+        if (FAILED(bd->pd3dDevice->CreateSamplerState(&desc, &bd->pFontSampler)))
+            return false;
     }
+
+    return true;
 }
 
 bool    ImGui_ImplDX11_CreateDeviceObjects()
@@ -514,7 +522,8 @@ bool    ImGui_ImplDX11_CreateDeviceObjects()
         bd->pd3dDevice->CreateDepthStencilState(&desc, &bd->pDepthStencilState);
     }
 
-    ImGui_ImplDX11_CreateFontsTexture();
+    if (!ImGui_ImplDX11_CreateFontsTexture())
+        return false;
 
     return true;
 }