[d3d11] Re-implemented shader read

src/d3d11/d3d11_shader.cpp

@@ -35,6 +35,22 @@ namespace dxvk {
       m_shader->dump(std::ofstream(str::format(baseName, ".spv"),
         std::ios_base::binary | std::ios_base::trunc));
     }
+    
+    
+    // If requested by the user, replace
+    // the shader with another file.
+    const std::string readPath
+      = env::getEnvVar(L"DXVK_SHADER_READ_PATH");
+    
+    if (readPath.size() != 0) {
+      const std::string baseName = str::format(readPath, "/",
+        ConstructFileName(ComputeShaderHash(pShaderBytecode, BytecodeLength),
+        module.version().type()));
+      
+      m_shader->read(std::ifstream(
+        str::format(baseName, ".spv"),
+        std::ios_base::binary));
+    }
   }
   
   

src/dxvk/dxvk_shader.cpp

@@ -88,4 +88,9 @@ namespace dxvk {
     m_code.store(std::move(outputStream));
   }
   
+  
+  void DxvkShader::read(std::istream&& inputStream) {
+    m_code = SpirvCodeBuffer(std::move(inputStream));
+  }
+  
 }

src/dxvk/dxvk_shader.h

@@ -105,6 +105,14 @@ namespace dxvk {
      */
     void dump(std::ostream&& outputStream) const;
     
+    /**
+     * \brief Reads SPIR-V shader
+     * 
+     * Can be used to replace the compiled SPIR-V code.
+     * \param [in] inputStream Stream to read from
+     */
+    void read(std::istream&& inputStream);
+    
   private:
     
     VkShaderStageFlagBits m_stage;