make a few PostProcessManager methods "package" public

we make PostProcessMaterial, getPostProcessMaterial() as well as
render(), commitAndRender() public (as in public to filament internals).

These methods have no reason to be private to PostProcessManager.

filament/src/PostProcessManager.h

@@ -273,44 +273,6 @@ class PostProcessManager {
         return mHaltonSamples[index & 0xFu];
     }
 
-private:
-    FEngine& mEngine;
-    class PostProcessMaterial;
-
-    struct BilateralPassConfig {
-        uint8_t kernelSize = 11;
-        bool bentNormals = false;
-        float standardDeviation = 1.0f;
-        float bilateralThreshold = 0.0625f;
-        float scale = 1.0f;
-    };
-
-    FrameGraphId<FrameGraphTexture> bilateralBlurPass(FrameGraph& fg,
-            FrameGraphId<FrameGraphTexture> input, FrameGraphId<FrameGraphTexture> depth,
-            math::int2 axis, float zf, backend::TextureFormat format,
-            BilateralPassConfig const& config) noexcept;
-
-    BloomPassOutput bloomPass(FrameGraph& fg,
-            FrameGraphId<FrameGraphTexture> input, backend::TextureFormat outFormat,
-            BloomOptions& inoutBloomOptions, math::float2 scale) noexcept;
-
-    FrameGraphId<FrameGraphTexture> downscalePass(FrameGraph& fg,
-            FrameGraphId<FrameGraphTexture> input,
-            FrameGraphTexture::Descriptor const& outDesc,
-            bool threshold, float highlight, bool fireflies) noexcept;
-
-    void commitAndRender(FrameGraphResources::RenderPassInfo const& out,
-            PostProcessMaterial const& material, uint8_t variant,
-            backend::DriverApi& driver) const noexcept;
-
-    void commitAndRender(FrameGraphResources::RenderPassInfo const& out,
-            PostProcessMaterial const& material,
-            backend::DriverApi& driver) const noexcept;
-
-    void render(FrameGraphResources::RenderPassInfo const& out,
-            backend::PipelineState const& pipeline,
-            backend::DriverApi& driver) const noexcept;
-
     class PostProcessMaterial {
     public:
         PostProcessMaterial() noexcept;
@@ -344,15 +306,53 @@ class PostProcessManager {
         utils::FixedCapacityVector<ConstantInfo> mConstants{};
     };
 
+    void registerPostProcessMaterial(std::string_view name, MaterialInfo const& info);
+
+    PostProcessMaterial& getPostProcessMaterial(std::string_view name) noexcept;
+
+    void commitAndRender(FrameGraphResources::RenderPassInfo const& out,
+            PostProcessMaterial const& material, uint8_t variant,
+            backend::DriverApi& driver) const noexcept;
+
+    void commitAndRender(FrameGraphResources::RenderPassInfo const& out,
+            PostProcessMaterial const& material,
+            backend::DriverApi& driver) const noexcept;
+
+    void render(FrameGraphResources::RenderPassInfo const& out,
+            backend::PipelineState const& pipeline,
+            backend::DriverApi& driver) const noexcept;
+
+private:
+    FEngine& mEngine;
+
+    struct BilateralPassConfig {
+        uint8_t kernelSize = 11;
+        bool bentNormals = false;
+        float standardDeviation = 1.0f;
+        float bilateralThreshold = 0.0625f;
+        float scale = 1.0f;
+    };
+
+    FrameGraphId<FrameGraphTexture> bilateralBlurPass(FrameGraph& fg,
+            FrameGraphId<FrameGraphTexture> input, FrameGraphId<FrameGraphTexture> depth,
+            math::int2 axis, float zf, backend::TextureFormat format,
+            BilateralPassConfig const& config) noexcept;
+
+    BloomPassOutput bloomPass(FrameGraph& fg,
+            FrameGraphId<FrameGraphTexture> input, backend::TextureFormat outFormat,
+            BloomOptions& inoutBloomOptions, math::float2 scale) noexcept;
+
+    FrameGraphId<FrameGraphTexture> downscalePass(FrameGraph& fg,
+            FrameGraphId<FrameGraphTexture> input,
+            FrameGraphTexture::Descriptor const& outDesc,
+            bool threshold, float highlight, bool fireflies) noexcept;
+
     using MaterialRegistryMap = tsl::robin_map<
             std::string_view,
             PostProcessMaterial>;
 
     MaterialRegistryMap mMaterialRegistry;
 
-    void registerPostProcessMaterial(std::string_view name, MaterialInfo const& info);
-    PostProcessMaterial& getPostProcessMaterial(std::string_view name) noexcept;
-
     backend::Handle<backend::HwTexture> mStarburstTexture;
 
     std::uniform_real_distribution<float> mUniformDistribution{0.0f, 1.0f};