diff --git a/src/frontend-common/d3d11_host_display.cpp b/src/frontend-common/d3d11_host_display.cpp
index d33dc8ff9..7ef7b8651 100644
--- a/src/frontend-common/d3d11_host_display.cpp
+++ b/src/frontend-common/d3d11_host_display.cpp
@@ -96,7 +96,8 @@ void D3D11HostDisplay::EndTextureUpdate(GPUTexture* texture, u32 x, u32 y, u32 w
   m_context->Unmap(tex->GetD3DTexture(), 0);
 }
 
-bool D3D11HostDisplay::UpdateTexture(GPUTexture* texture, u32 x, u32 y, u32 width, u32 height, const void* data, u32 pitch)
+bool D3D11HostDisplay::UpdateTexture(GPUTexture* texture, u32 x, u32 y, u32 width, u32 height, const void* data,
+                                     u32 pitch)
 {
   D3D11::Texture* tex = static_cast<D3D11::Texture*>(texture);
   if (tex->IsDynamic())
@@ -1007,6 +1008,7 @@ bool D3D11HostDisplay::SetPostProcessingChain(const std::string_view& config)
     return false;
   }
 
+  m_post_processing_timer.Reset();
   return true;
 }
 
@@ -1061,6 +1063,8 @@ void D3D11HostDisplay::ApplyPostProcessingChain(ID3D11RenderTargetView* final_ta
   RenderDisplay(final_left, final_top, final_width, final_height, texture, texture_view_x, texture_view_y,
                 texture_view_width, texture_view_height, IsUsingLinearFiltering());
 
+  const s32 orig_texture_width = texture_view_width;
+  const s32 orig_texture_height = texture_view_height;
   texture = &m_post_processing_input_texture;
   texture_view_x = final_left;
   texture_view_y = final_top;
@@ -1091,7 +1095,8 @@ void D3D11HostDisplay::ApplyPostProcessingChain(ID3D11RenderTargetView* final_ta
       m_display_uniform_buffer.Map(m_context.Get(), m_display_uniform_buffer.GetSize(), pps.uniforms_size);
     m_post_processing_chain.GetShaderStage(i).FillUniformBuffer(
       map.pointer, texture->GetWidth(), texture->GetHeight(), texture_view_x, texture_view_y, texture_view_width,
-      texture_view_height, GetWindowWidth(), GetWindowHeight(), 0.0f);
+      texture_view_height, GetWindowWidth(), GetWindowHeight(), orig_texture_width, orig_texture_height,
+      static_cast<float>(m_post_processing_timer.GetTimeSeconds()));
     m_display_uniform_buffer.Unmap(m_context.Get(), pps.uniforms_size);
     m_context->VSSetConstantBuffers(0, 1, m_display_uniform_buffer.GetD3DBufferArray());
     m_context->PSSetConstantBuffers(0, 1, m_display_uniform_buffer.GetD3DBufferArray());
diff --git a/src/frontend-common/d3d11_host_display.h b/src/frontend-common/d3d11_host_display.h
index 79a885baf..350636c8f 100644
--- a/src/frontend-common/d3d11_host_display.h
+++ b/src/frontend-common/d3d11_host_display.h
@@ -1,6 +1,7 @@
 #pragma once
 #include "common/d3d11/stream_buffer.h"
 #include "common/d3d11/texture.h"
+#include "common/timer.h"
 #include "common/window_info.h"
 #include "common/windows_headers.h"
 #include "core/host_display.h"
@@ -146,6 +147,7 @@ protected:
   FrontendCommon::PostProcessingChain m_post_processing_chain;
   D3D11::Texture m_post_processing_input_texture;
   std::vector<PostProcessingStage> m_post_processing_stages;
+  Common::Timer m_post_processing_timer;
 
   std::array<std::array<ComPtr<ID3D11Query>, 3>, NUM_TIMESTAMP_QUERIES> m_timestamp_queries = {};
   u8 m_read_timestamp_query = 0;
diff --git a/src/frontend-common/opengl_host_display.cpp b/src/frontend-common/opengl_host_display.cpp
index 4daad42d7..6e7629cee 100644
--- a/src/frontend-common/opengl_host_display.cpp
+++ b/src/frontend-common/opengl_host_display.cpp
@@ -929,6 +929,8 @@ void OpenGLHostDisplay::ApplyPostProcessingChain(GLuint final_target, s32 final_
   RenderDisplay(final_left, target_height - final_top - final_height, final_width, final_height, texture,
                 texture_view_x, texture_view_y, texture_view_width, texture_view_height, IsUsingLinearFiltering());
 
+  const s32 orig_texture_width = texture_view_width;
+  const s32 orig_texture_height = texture_view_height;
   texture = &m_post_processing_input_texture;
   texture_view_x = final_left;
   texture_view_y = final_top;
@@ -959,7 +961,8 @@ void OpenGLHostDisplay::ApplyPostProcessingChain(GLuint final_target, s32 final_
     const auto map_result = m_post_processing_ubo->Map(m_uniform_buffer_alignment, pps.uniforms_size);
     m_post_processing_chain.GetShaderStage(i).FillUniformBuffer(
       map_result.pointer, texture->GetWidth(), texture->GetHeight(), texture_view_x, texture_view_y, texture_view_width,
-      texture_view_height, GetWindowWidth(), GetWindowHeight(), 0.0f);
+      texture_view_height, GetWindowWidth(), GetWindowHeight(), orig_texture_width, orig_texture_height,
+      static_cast<float>(m_post_processing_timer.GetTimeSeconds()));
     m_post_processing_ubo->Unmap(pps.uniforms_size);
     glBindBufferRange(GL_UNIFORM_BUFFER, 1, m_post_processing_ubo->GetGLBufferId(), map_result.buffer_offset,
                       pps.uniforms_size);
diff --git a/src/frontend-common/opengl_host_display.h b/src/frontend-common/opengl_host_display.h
index 303d30565..0f42c513e 100644
--- a/src/frontend-common/opengl_host_display.h
+++ b/src/frontend-common/opengl_host_display.h
@@ -4,6 +4,7 @@
 #include "common/gl/program.h"
 #include "common/gl/stream_buffer.h"
 #include "common/gl/texture.h"
+#include "common/timer.h"
 #include "common/window_info.h"
 #include "core/host_display.h"
 #include "postprocessing_chain.h"
@@ -121,6 +122,7 @@ protected:
   GL::Texture m_post_processing_input_texture;
   std::unique_ptr<GL::StreamBuffer> m_post_processing_ubo;
   std::vector<PostProcessingStage> m_post_processing_stages;
+  Common::Timer m_post_processing_timer;
 
   std::array<GLuint, NUM_TIMESTAMP_QUERIES> m_timestamp_queries = {};
   float m_accumulated_gpu_time = 0.0f;
diff --git a/src/frontend-common/postprocessing_shader.cpp b/src/frontend-common/postprocessing_shader.cpp
index 1c6479cf7..abdc5f9a4 100644
--- a/src/frontend-common/postprocessing_shader.cpp
+++ b/src/frontend-common/postprocessing_shader.cpp
@@ -248,11 +248,11 @@ u32 PostProcessingShader::GetUniformsSize() const
 
 void PostProcessingShader::FillUniformBuffer(void* buffer, u32 texture_width, s32 texture_height, s32 texture_view_x,
                                              s32 texture_view_y, s32 texture_view_width, s32 texture_view_height,
-                                             u32 window_width, u32 window_height, float time) const
+                                             u32 window_width, u32 window_height, s32 original_width,
+                                             s32 original_height, float time) const
 {
   CommonUniforms* common = static_cast<CommonUniforms*>(buffer);
 
-  // TODO: OpenGL?
   const float rcp_texture_width = 1.0f / static_cast<float>(texture_width);
   const float rcp_texture_height = 1.0f / static_cast<float>(texture_height);
   common->src_rect[0] = static_cast<float>(texture_view_x) * rcp_texture_width;
@@ -269,6 +269,17 @@ void PostProcessingShader::FillUniformBuffer(void* buffer, u32 texture_width, s3
   common->window_resolution[1] = static_cast<float>(window_height);
   common->rcp_window_resolution[0] = 1.0f / static_cast<float>(window_width);
   common->rcp_window_resolution[1] = 1.0f / static_cast<float>(window_height);
+
+  // pad the "original size" relative to the positioning on the screen
+  const float view_scale_x = static_cast<float>(original_width) / static_cast<float>(texture_view_width);
+  const float view_scale_y = static_cast<float>(original_height) / static_cast<float>(texture_view_height);
+  const s32 view_pad_x = texture_view_x + (texture_width - texture_view_width - texture_view_x);
+  const s32 view_pad_y = texture_view_y + (texture_height - texture_view_height - texture_view_y);
+  common->original_size[0] = static_cast<float>(original_width);
+  common->original_size[1] = static_cast<float>(original_height);
+  common->padded_original_size[0] = common->original_size[0] + static_cast<float>(view_pad_x) * view_scale_x;
+  common->padded_original_size[1] = common->original_size[1] + static_cast<float>(view_pad_y) * view_scale_y;
+
   common->time = time;
 
   u8* option_values = reinterpret_cast<u8*>(common + 1);
diff --git a/src/frontend-common/postprocessing_shader.h b/src/frontend-common/postprocessing_shader.h
index 8dffb6cee..599cfb41c 100644
--- a/src/frontend-common/postprocessing_shader.h
+++ b/src/frontend-common/postprocessing_shader.h
@@ -83,7 +83,7 @@ public:
   u32 GetUniformsSize() const;
   void FillUniformBuffer(void* buffer, u32 texture_width, s32 texture_height, s32 texture_view_x, s32 texture_view_y,
                          s32 texture_view_width, s32 texture_view_height, u32 window_width, u32 window_height,
-                         float time) const;
+                         s32 original_width, s32 original_height, float time) const;
 
 private:
   struct CommonUniforms
@@ -94,8 +94,10 @@ private:
     float rcp_resolution[2];
     float window_resolution[2];
     float rcp_window_resolution[2];
+    float original_size[2];
+    float padded_original_size[2];
     float time;
-    float padding[1];
+    float padding;
   };
 
   void LoadOptions();
diff --git a/src/frontend-common/postprocessing_shadergen.cpp b/src/frontend-common/postprocessing_shadergen.cpp
index 0eb418f58..0671b73e6 100644
--- a/src/frontend-common/postprocessing_shadergen.cpp
+++ b/src/frontend-common/postprocessing_shadergen.cpp
@@ -106,6 +106,14 @@ float2 GetCoordinates()
 {
   return v_tex0;
 }
+float2 GetOriginalSize()
+{
+  return original_size;
+}
+float2 GetPaddedOriginalSize()
+{
+  return padded_original_size;
+}
 float GetTime()
 {
   return time;
@@ -150,6 +158,8 @@ void PostProcessingShaderGen::WriteUniformBuffer(std::stringstream& ss, const Po
   ss << "  float2 rcp_resolution;\n";
   ss << "  float2 window_resolution;\n";
   ss << "  float2 rcp_window_resolution;\n";
+  ss << "  float2 original_size;\n";
+  ss << "  float2 padded_original_size;\n";
   ss << "  float time;\n";
   ss << "  float ubo_pad" << (pad_counter++) << ";\n";
   ss << "\n";
diff --git a/src/frontend-common/vulkan_host_display.cpp b/src/frontend-common/vulkan_host_display.cpp
index 93dada004..21bbeea45 100644
--- a/src/frontend-common/vulkan_host_display.cpp
+++ b/src/frontend-common/vulkan_host_display.cpp
@@ -1113,6 +1113,8 @@ void VulkanHostDisplay::ApplyPostProcessingChain(VkFramebuffer target_fb, s32 fi
   Vulkan::Util::EndDebugScope(g_vulkan_context->GetCurrentCommandBuffer());
   m_post_processing_input_texture.TransitionToLayout(cmdbuffer, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
 
+  const s32 orig_texture_width = texture_view_width;
+  const s32 orig_texture_height = texture_view_height;
   texture = &m_post_processing_input_texture;
   texture_view_x = final_left;
   texture_view_y = final_top;
@@ -1154,7 +1156,8 @@ void VulkanHostDisplay::ApplyPostProcessingChain(VkFramebuffer target_fb, s32 fi
       Assert(pps.uniforms_size <= sizeof(buffer));
       m_post_processing_chain.GetShaderStage(i).FillUniformBuffer(
         buffer, texture->GetWidth(), texture->GetHeight(), texture_view_x, texture_view_y, texture_view_width,
-        texture_view_height, GetWindowWidth(), GetWindowHeight(), 0.0f);
+        texture_view_height, GetWindowWidth(), GetWindowHeight(), orig_texture_width, orig_texture_height,
+        static_cast<float>(m_post_processing_timer.GetTimeSeconds()));
 
       vkCmdPushConstants(cmdbuffer, m_post_process_pipeline_layout,
                          VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0, pps.uniforms_size, buffer);
@@ -1174,7 +1177,8 @@ void VulkanHostDisplay::ApplyPostProcessingChain(VkFramebuffer target_fb, s32 fi
       const u32 offset = m_post_processing_ubo.GetCurrentOffset();
       m_post_processing_chain.GetShaderStage(i).FillUniformBuffer(
         m_post_processing_ubo.GetCurrentHostPointer(), texture->GetWidth(), texture->GetHeight(), texture_view_x,
-        texture_view_y, texture_view_width, texture_view_height, GetWindowWidth(), GetWindowHeight(), 0.0f);
+        texture_view_y, texture_view_width, texture_view_height, GetWindowWidth(), GetWindowHeight(),
+        orig_texture_width, orig_texture_height, static_cast<float>(m_post_processing_timer.GetTimeSeconds()));
       m_post_processing_ubo.CommitMemory(pps.uniforms_size);
 
       dsupdate.AddBufferDescriptorWrite(ds, 0, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC,
diff --git a/src/frontend-common/vulkan_host_display.h b/src/frontend-common/vulkan_host_display.h
index 1ed68646c..ada24886c 100644
--- a/src/frontend-common/vulkan_host_display.h
+++ b/src/frontend-common/vulkan_host_display.h
@@ -1,4 +1,5 @@
 #pragma once
+#include "common/timer.h"
 #include "common/vulkan/loader.h"
 #include "common/vulkan/stream_buffer.h"
 #include "common/vulkan/swap_chain.h"
@@ -137,4 +138,5 @@ protected:
   VkFramebuffer m_post_processing_input_framebuffer = VK_NULL_HANDLE;
   Vulkan::StreamBuffer m_post_processing_ubo;
   std::vector<PostProcessingStage> m_post_processing_stages;
+  Common::Timer m_post_processing_timer;
 };