FramebufferManager: Support saving EFB to save state

1 files changed, 20 insertions, 0 deletions

diff --git a/Source/Core/VideoCommon/FramebufferShaderGen.cpp b/Source/Core/VideoCommon/FramebufferShaderGen.cpp
index 5789c0a0d2..00ff753d92 100644
--- a/Source/Core/VideoCommon/FramebufferShaderGen.cpp
+++ b/Source/Core/VideoCommon/FramebufferShaderGen.cpp
@@ -644,4 +644,24 @@ std::string GenerateTextureReinterpretShader(TextureFormat from_format, TextureF
   return ss.str();
 }
 
+std::string GenerateEFBRestorePixelShader()
+{
+  std::stringstream ss;
+  EmitSamplerDeclarations(ss, 0, 2, false);
+  EmitPixelMainDeclaration(ss, 1, 0, "float4",
+                           GetAPIType() == APIType::D3D ? "out float depth : SV_Depth, " : "");
+  ss << "{\n";
+  ss << "  float3 coords = float3(v_tex0.x, "
+     << (g_ActiveConfig.backend_info.bUsesLowerLeftOrigin ? "1.0 - " : "")
+     << "v_tex0.y, v_tex0.z);\n";
+  ss << "  ocol0 = ";
+  EmitSampleTexture(ss, 0, "coords");
+  ss << ";\n";
+  ss << "  " << (GetAPIType() == APIType::D3D ? "depth" : "gl_FragDepth") << " = ";
+  EmitSampleTexture(ss, 1, "coords");
+  ss << ".r;\n";
+  ss << "}\n";
+  return ss.str();
+}
+
 }  // namespace FramebufferShaderGen