Add compression option for texture dumps.

Enable through command line options:
-C Graphics.Settings.TexturePNGCompressionLevel=[0-9]

Or from GFX.ini:
[Settings]
TexturePNGCompressionLevel=[0-9]

@see #10792

Source/Core/Core/Config/GraphicsSettings.cpp

@@ -44,6 +44,8 @@ const Info<bool> GFX_OVERLAY_SCISSOR_STATS{{System::GFX, "Settings", "OverlaySci
 const Info<bool> GFX_DUMP_TEXTURES{{System::GFX, "Settings", "DumpTextures"}, false};
 const Info<bool> GFX_DUMP_MIP_TEXTURES{{System::GFX, "Settings", "DumpMipTextures"}, true};
 const Info<bool> GFX_DUMP_BASE_TEXTURES{{System::GFX, "Settings", "DumpBaseTextures"}, true};
+const Info<int> GFX_TEXTURE_PNG_COMPRESSION_LEVEL{
+    {System::GFX, "Settings", "TexturePNGCompressionLevel"}, 6};
 const Info<bool> GFX_HIRES_TEXTURES{{System::GFX, "Settings", "HiresTextures"}, false};
 const Info<bool> GFX_CACHE_HIRES_TEXTURES{{System::GFX, "Settings", "CacheHiresTextures"}, false};
 const Info<bool> GFX_DUMP_EFB_TARGET{{System::GFX, "Settings", "DumpEFBTarget"}, false};

Source/Core/Core/Config/GraphicsSettings.h

@@ -46,6 +46,7 @@ extern const Info<bool> GFX_OVERLAY_SCISSOR_STATS;
 extern const Info<bool> GFX_DUMP_TEXTURES;
 extern const Info<bool> GFX_DUMP_MIP_TEXTURES;
 extern const Info<bool> GFX_DUMP_BASE_TEXTURES;
+extern const Info<int> GFX_TEXTURE_PNG_COMPRESSION_LEVEL;
 extern const Info<bool> GFX_HIRES_TEXTURES;
 extern const Info<bool> GFX_CACHE_HIRES_TEXTURES;
 extern const Info<bool> GFX_DUMP_EFB_TARGET;

Source/Core/VideoCommon/AbstractTexture.cpp

@@ -19,7 +19,7 @@ void AbstractTexture::FinishedRendering()
 {
 }
 
-bool AbstractTexture::Save(const std::string& filename, unsigned int level)
+bool AbstractTexture::Save(const std::string& filename, unsigned int level, int compression)
 {
   // We can't dump compressed textures currently (it would mean drawing them to a RGBA8
   // framebuffer, and saving that). TextureCache does not call Save for custom textures
@@ -51,7 +51,7 @@ bool AbstractTexture::Save(const std::string& filename, unsigned int level)
   return Common::SavePNG(filename,
                          reinterpret_cast<const u8*>(readback_texture->GetMappedPointer()),
                          Common::ImageByteFormat::RGBA, level_width, level_height,
-                         static_cast<int>(readback_texture->GetMappedStride()));
+                         static_cast<int>(readback_texture->GetMappedStride()), compression);
 }
 
 bool AbstractTexture::IsCompressedFormat(AbstractTextureFormat format)

Source/Core/VideoCommon/AbstractTexture.h

@@ -38,7 +38,7 @@ public:
   MathUtil::Rectangle<int> GetRect() const { return m_config.GetRect(); }
   MathUtil::Rectangle<int> GetMipRect(u32 level) const { return m_config.GetMipRect(level); }
   bool IsMultisampled() const { return m_config.IsMultisampled(); }
-  bool Save(const std::string& filename, unsigned int level);
+  bool Save(const std::string& filename, unsigned int level, int compression = 6);
 
   static bool IsCompressedFormat(AbstractTextureFormat format);
   static bool IsDepthFormat(AbstractTextureFormat format);

Source/Core/VideoCommon/TextureCacheBase.cpp

@@ -1023,7 +1023,7 @@ void TextureCacheBase::DumpTexture(RcTcacheEntry& entry, std::string basename, u
   if (File::Exists(filename))
     return;
 
-  entry->texture->Save(filename, level);
+  entry->texture->Save(filename, level, Config::Get(Config::GFX_TEXTURE_PNG_COMPRESSION_LEVEL));
 }
 
 // Helper for checking if a BPMemory TexMode0 register is set to Point