X-Git-Url: http://git.tdb.fi/?p=libs%2Fdemoscene.git;a=blobdiff_plain;f=source%2Ffilmgrain.h;fp=source%2Ffilmgrain.h;h=810b9a46627a4f9c1732ec1c5a54b268578fa3a1;hp=0000000000000000000000000000000000000000;hb=77d0c7ac9e3ebe1cecaf0c84e1501d3b6459055f;hpb=1e3954a988c6d6d946260019f25a4ad3262e01c4

diff --git a/source/filmgrain.h b/source/filmgrain.h
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+++ b/source/filmgrain.h
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+#ifndef MSP_DEMOSCENE_FILMGRAIN_H_
+#define MSP_DEMOSCENE_FILMGRAIN_H_
+
+#include <msp/gl/mesh.h>
+#include <msp/gl/postprocessor.h>
+#include <msp/gl/program.h>
+#include <msp/gl/programdata.h>
+#include <msp/gl/texture2darray.h>
+#include <msp/gl/texturing.h>
+
+namespace Msp {
+namespace DemoScene {
+
+class FilmGrain: public GL::PostProcessor
+{
+public:
+	struct Template: public PostProcessor::Template
+	{
+		class Loader: public DataFile::DerivedObjectLoader<Template, PostProcessor::Template::Loader>
+		{
+		public:
+			Loader(Template &t);
+		};
+
+		unsigned size;
+		unsigned layers;
+		float coarseness;
+		float strength;
+
+		Template();
+
+		virtual FilmGrain *create(unsigned, unsigned) const;
+	};
+
+private:
+	const Msp::GL::Mesh &mesh;
+	const Msp::GL::Program &shprog;
+	Msp::GL::ProgramData shdata;
+	Msp::GL::Texturing texturing;
+	unsigned size;
+	unsigned layers;
+	Msp::GL::Texture2DArray grain;
+	unsigned current_layer;
+
+public:
+	FilmGrain(unsigned = 256, unsigned = 16);
+
+private:
+	void generate_grain();
+	void bicubic2x(const UInt8 *, UInt8 *, Int16 *);
+	static UInt8 clamp(int);
+
+public:
+	void set_coarseness(float);
+	void set_strength(float);
+
+	virtual void render(GL::Renderer &, const GL::Texture2D &, const GL::Texture2D &);
+};
+
+} // namespace DemoScene
+} // namespace Msp
+
+#endif