X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Feffects%2Fenvironmentmap.h;h=9ef0e87d87a599fa8632a45234b8d3de6a3f0b95;hp=c54968de35d5cfc7bf11be0ee14559c34cf766fc;hb=HEAD;hpb=7aaec9a70b8d7733429bec043f8e33e02956f266

diff --git a/source/effects/environmentmap.h b/source/effects/environmentmap.h
index c54968de..9ef0e87d 100644
--- a/source/effects/environmentmap.h
+++ b/source/effects/environmentmap.h
@@ -1,55 +1,121 @@
 #ifndef MSP_GL_ENVIRONMENTMAP_H_
 #define MSP_GL_ENVIRONMENTMAP_H_
 
+#include <vector>
 #include "camera.h"
 #include "effect.h"
 #include "framebuffer.h"
-#include "matrix.h"
 #include "programdata.h"
-#include "renderbuffer.h"
+#include "texture2d.h"
 #include "texturecube.h"
-#include "vector.h"
 
 namespace Msp {
 namespace GL {
 
-class Renderable;
+class Mesh;
+class Sampler;
 
 /**
-Creates a cube map texture of the surroundings of the renderable.  This texture
-can then be used to implement effects such as reflections or refractions.
+Creates a cube map texture of the surroundings of the content renderable, for
+use in image-based lighting.  Also called a light probe.
 
-If the EnvironmentMap is used in a Pipeline, it's worth noting that the cube
-map will be prepared outside of any rendering pass.  It's recommended to use
-another Pipeline to define which passes should be used to render the
-environment.
+The cube map can optionally be prefiltered for varying amounts of roughness.
+An irradiance map for diffuse lighting is also created.
+
+The EnvironmentMap won't be rendered inside its own environment.  This avoids
+artifacts if one is used to create reflections on a complex object.
+
+The shader fragment common.glsl provides interfaces to access the environment
+data.
 */
 class EnvironmentMap: public Effect
 {
-private:
+public:
+	struct Template: Effect::Template
+	{
+		class Loader: public DataFile::DerivedObjectLoader<Template, Effect::Template::Loader>
+		{
+		private:
+			static ActionMap shared_actions;
+
+		public:
+			Loader(Template &, Collection &);
+		private:
+			virtual void init_actions();
+
+			void fixed_position(float, float, float);
+		};
+
+		unsigned size = 512;
+		PixelFormat format = RGBA16F;
+		std::string environment_name;
+		unsigned roughness_levels = 5;
+		Vector3 fixed_position;
+		bool use_fixed_position = false;
+		float near_clip = 0.1f;
+		float far_clip = 100.0f;
+
+		virtual EnvironmentMap *create(const std::map<std::string, Renderable *> &) const;
+	};
+
+protected:
+	struct Face
+	{
+		Framebuffer fbo;
+		Camera camera;
+	};
+
 	unsigned size;
 	Renderable &environment;
 	TextureCube env_tex;
-	Renderbuffer depth_buf;
-	Framebuffer fbo[6];
-	RefPtr<Sampler> sampler;
-	Camera camera;
-	mutable ProgramData shdata;
-	bool rendered;
-	unsigned update_interval;
-	unsigned update_delay;
+	Texture2D depth_buf;
+	Face faces[6];
+	Vector3 fixed_position;
+	bool use_fixed_pos = false;
+
+	TextureCube irradiance;
+	const Program &irradiance_shprog;
+	Framebuffer irradiance_fbo;
+	const Program &specular_shprog;
+	std::vector<Framebuffer> specular_fbos;
+	ProgramData prefilter_shdata;
+	const Mesh &fullscreen_mesh;
+
+	const Sampler &sampler;
+	const Sampler &mip_sampler;
+	ProgramData shdata;
+	bool rendered = false;
+	bool in_setup_frame = false;
+	unsigned update_interval = 1;
+	unsigned update_delay = 0;
 
 public:
-	EnvironmentMap(unsigned size, Renderable &rend, Renderable &env);
+	EnvironmentMap(unsigned size, PixelFormat, Renderable &content, Renderable &env);
+
+	/** Creates an EnvironmentMap with prefiltering for varying amounts of
+	roughness.  Levels specifies the number of prefilter mipmap levels and must
+	be valid for the size. */
+	EnvironmentMap(unsigned size, PixelFormat, unsigned levels, Renderable &content, Renderable &env);
+
+	/** Sets a fixed position to render the environment map from.  This can be
+	useful if the content renderable does not have a model matrix. */
+	void set_fixed_position(const Vector3 &);
 
 	void set_depth_clip(float, float);
+
+	/** Sets the interval in frames between environment map updates.  A value of
+	0 means an update is only done when manually requested. */
 	void set_update_interval(unsigned);
+
+	/** Request that the environment map is updated on the next frame. */
 	void queue_update();
 
 	virtual void setup_frame(Renderer &);
 	virtual void finish_frame();
 
-	virtual void render(Renderer &, const Tag & = Tag()) const;
+	virtual void render(Renderer &, Tag = Tag()) const;
+
+	virtual void set_debug_name(const std::string &);
 };
 
 } // namespace GL