update pointsprite for VR

include/Utils/pointSprite.frag

@@ -5,8 +5,6 @@ uniform vec3 lightPos;
 uniform vec3 ambiant;
 uniform float size;
 #ifdef WITH_PLANE
-	uniform vec3 eyePos;
-	uniform vec3 eyeY;
 	VARYING_FRAG vec3 eyePosFrag;
 #endif
 
@@ -21,18 +19,14 @@ uniform float size;
 VARYING_FRAG vec2 texCoord;
 VARYING_FRAG vec3 sphereCenter;
 
-
-
 void main(void)
 {
-
 	vec3 billboard_frag_pos = sphereCenter + vec3(texCoord, 0.0) * size;
 #ifdef WITH_PLANE
 	vec3 ray_direction = normalize(billboard_frag_pos - eyePosFrag;);
 #else
 	vec3 ray_direction = normalize(billboard_frag_pos);
 #endif
-
 	float TD = -dot(ray_direction,sphereCenter);
 	float c = dot(sphereCenter, sphereCenter) - size * size;
 	float arg = TD * TD - c;
@@ -50,5 +44,4 @@ void main(void)
 	float lambertTerm = dot(N,L);
 	
 	gl_FragColor = vec4(colorsprite*lambertTerm + ambiant ,1.0);
-
 }

include/Utils/pointSprite.geom

@@ -5,7 +5,6 @@ uniform mat4 ModelViewMatrix;
 uniform mat4 ProjectionMatrix;
 #ifdef WITH_PLANE
 	uniform vec3 eyePos;
-	uniform vec3 eyeY;
 	VARYING_OUT vec4 eyePosFrag;
 #endif
 
@@ -51,7 +50,8 @@ void main()
 
 	vec3 V = sphereCenter-eyePosFrag;
 	V.normalize();
-	vec3 planeX = cross(V, eyeY);
+//	vec3 planeX = cross(V, vec3(0.0,1.0,0.0));
+	vec3 planeX = vec3(-V[2],0.0,V[0]);
 	vec3 planeY = cross(X,V);
 	corner(posCenter, planeX, planeY, -1.0, 1.0);
 	corner(posCenter, planeX, planeY, -1.0,-1.0);

include/Utils/pointSprite.h

@@ -64,7 +64,7 @@ protected:
 	
 	CGoGNGLuint m_uniform_EyePos;
 	
-	CGoGNGLuint m_uniform_EyeY;
+//	CGoGNGLuint m_uniform_EyeY;
 
 	CGoGNGLuint m_uniform_ambiant;
 
@@ -109,7 +109,7 @@ public:
 	/**
 	* set the plane of rendering for VR rendering
 	*/
-	void setEyePosition(const Geom::Vec3f& ox, const Geom::Vec3f& oy);
+	void setEyePosition(const Geom::Vec3f& ep);
 
 
 	/**

src/Utils/pointSprite.cpp

@@ -94,7 +94,7 @@ PointSprite::PointSprite(bool withColorPervertex, float radius,  bool with_plane
 	if (with_plane)
 	{
 		*m_uniform_EyePos = glGetUniformLocation(program_handler(),"eyePos");
-		*m_uniform_EyeY = glGetUniformLocation(program_handler(),"eyeY");
+//		*m_uniform_EyeY = glGetUniformLocation(program_handler(),"eyeY");
 	}
 
 	*m_uniform_ambiant = glGetUniformLocation(program_handler(),"ambiant");
@@ -156,11 +156,11 @@ void PointSprite::setSize(float radius)
 	unbind();
 }
 
-void PointSprite::setEyePosition(const Geom::Vec3f& ox, const Geom::Vec3f& oy)
+void PointSprite::setEyePosition(const Geom::Vec3f& ep)
 {
 	bind();
-	glUniform3fv(*m_uniform_EyePos, 1, ox.data());
-	glUniform3fv(*m_uniform_EyeY, 1, oy.data());
+	glUniform3fv(*m_uniform_EyePos, 1, ep.data());
+//	glUniform3fv(*m_uniform_EyeY, 1, oy.data());
 	unbind();
 }