X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fshadowmap.h;h=fe36fca0e5bac9e6e7eff35f3a33065d9fb3d85e;hp=11407462c3e1922c48cd9bb0b3725829e207f595;hb=c3b339da673601c283abf9222b5e8f66ba80a688;hpb=7cbe8cc9893fe14f889321bd55e78b0ed6503e23

diff --git a/source/shadowmap.h b/source/shadowmap.h
index 11407462..fe36fca0 100644
--- a/source/shadowmap.h
+++ b/source/shadowmap.h
@@ -1,8 +1,9 @@
-#ifndef SHADOWMAP_H_
-#define SHADOWMAP_H_
+#ifndef MSP_GL_SHADOWMAP_H_
+#define MSP_GL_SHADOWMAP_H_
 
 #include "effect.h"
 #include "framebuffer.h"
+#include "programdata.h"
 #include "texture2d.h"
 #include "vector.h"
 
@@ -23,25 +24,41 @@ class ShadowMap: public Effect
 private:
 	unsigned size;
 	const Light &light;
-	mutable Framebuffer fbo;
-	unsigned unit;
+	Framebuffer fbo;
+	Matrix shadow_matrix;
 	Texture2D depth_buf;
 	Vector3 target;
 	float radius;
+	float depth_bias;
+	mutable ProgramData shdata;
+	bool rendered;
 
 public:
-	ShadowMap(unsigned, const Renderable &, const Light &);
+	ShadowMap(unsigned, Renderable &, const Light &);
 
 	/** Sets the ShadowMap target point and radius.  The transformation matrix is
 	computed so that a sphere with the specified parameters will be completely
 	covered by the ShadowMap. */
 	void set_target(const Vector3 &, float);
 
-	/** Sets the texture unit to bind the shadow map to during the rendering
-	phase.  The default is texture unit 3. */
-	void set_texture_unit(unsigned);
+	/** Sets the darkness of shadows.  Must be in the range between 0.0 and 1.0,
+	inclusive.  Only usable with shaders, and provided through the
+	shadow_darkness uniform. */
+	void set_darkness(float);
 
-	virtual void render(Renderer &, const Tag &) const;
+	/** Sets a distance beyond objects from which the shadow starts.  Expressed
+	in pixel-sized units.  Must be positive; values less than 1.0 are not
+	recommended.  Larger values produce less depth artifacts, but may prevent
+	thin objects from casting shadows on nearby sufraces. */
+	void set_depth_bias(float);
+
+	const Texture2D &get_depth_texture() const { return depth_buf; }
+	const Matrix &get_shadow_matrix() const { return shadow_matrix; }
+
+	virtual void setup_frame(Renderer &);
+	virtual void finish_frame();
+
+	virtual void render(Renderer &, const Tag & = Tag()) const;
 };
 
 } // namespace GL