Esempio n. 1
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	Matrix4D Matrix4D::transpose( const Matrix4D& A ) 
	{
    	return Matrix4D( A[0][0], A[0][1], A[0][2], A[0][3],
		 A[1][0], A[1][1], A[1][2], A[1][3],
		 A[2][0], A[2][1], A[2][2], A[2][3],
		 A[3][0], A[3][1], A[3][2], A[3][3] );
	}
Esempio n. 2
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	Matrix4D Matrix4D::matrixCompMult( const Matrix4D& A, const Matrix4D& B ) 
	{
    	return Matrix4D( A[0][0]*B[0][0], A[0][1]*B[0][1], A[0][2]*B[0][2], A[0][3]*B[0][3],
						A[1][0]*B[1][0], A[1][1]*B[1][1], A[1][2]*B[1][2], A[1][3]*B[1][3],
						A[2][0]*B[2][0], A[2][1]*B[2][1], A[2][2]*B[2][2], A[2][3]*B[2][3],
						A[3][0]*B[3][0], A[3][1]*B[3][1], A[3][2]*B[3][2], A[3][3]*B[3][3] );
	}
Esempio n. 3
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Matrix4D ParametrizedEulerAnglesAndTranslation::getMatrix(void)
{
    Point3D angles = value->eulerAngles;
    
    Point3D trans = value->translate;

    Matrix3D rotate = Matrix3D(angles);

    return Matrix4D(rotate, trans);
}
Esempio n. 4
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Matrix4D ParametrizedQuaternionAndTranslation::getMatrix(void)
{
    Quaternion q = value->quaternion;
    
    Point3D trans = value->translate;

    Matrix3D closestRot = Matrix3D(q);

    return Matrix4D(closestRot, trans);
}
Esempio n. 5
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Matrix4D ParametrizedRotationLogarithmAndTranslation::getMatrix(void)
{
    Matrix3D m = value->skewSymmetric;
    
    Point3D trans = value->translate;

    Matrix3D exp = Matrix3D::Exp(m, 100); //exponential

    return Matrix4D(exp, trans);
}
Esempio n. 6
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Matrix4D ParametrizedClosestRotationAndTranslation::getMatrix(void)
{
    Matrix3D notRotation = value->rotation;
    
    Point3D trans = value->translate;

    Matrix3D closestRotate = notRotation.closestRotation();

    return Matrix4D(closestRotate, trans);    
}
void ScreenSpaceAmbientOcclusionManager::generate_ssao_texture(Scene * scene) {
    //Render scene normals and depth to a texture
    glViewport(0, 0, viewport_width, viewport_height);

    Matrix4D view = scene->set_view();
    Matrix4D projection = scene->set_projection();
    Matrix3D normal = glm::inverseTranspose(glm::mat3(view));

    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, frame_buffer_object);
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, normal_depth_texture, 0);
    check_frame_buffer();

    glClearColor(0.f, 0.f, 0.f, 0.f);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    
    shaders.select_shader(NORMAL_DEPTH_TEXTURE);

    uint program = shaders.get_program_id(NORMAL_DEPTH_TEXTURE);

    GLint projection_location = glGetUniformLocation(program, "projection");
    glUniformMatrix4fv(projection_location, 1, GL_FALSE, &projection[0][0]);

    GLint view_location = glGetUniformLocation(program, "view");
    glUniformMatrix4fv(view_location, 1, GL_FALSE, &view[0][0]);

    GLint normal_matrix_location = glGetUniformLocation(program, "normal_matrix");
    glUniformMatrix3fv(normal_matrix_location, 1, GL_FALSE, &normal[0][0]);

    scene->plain_render(view, program);
    scene->render_floor(view, program);

    shaders.select_shader(-1);

    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);

    glBindTexture(GL_TEXTURE_2D, normal_depth_texture);
    glGenerateMipmap(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, 0);
    
    //Render SSAO to a texture
    glViewport(0, 0, viewport_width, viewport_height);
   
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    view = Matrix4D(1.0);

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
    projection = glm::ortho(-1.0, 1.0, -1.0, 1.0);

    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, frame_buffer_object);
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, ssao_texture, 0);
    check_frame_buffer();

    glClearColor(0.f, 0.f, 0.f, 0.f);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    shaders.select_shader(separable ? SEPARABLE_SSAO : SSAO_TEXTURE);

    glActiveTexture(GL_TEXTURE0);
    bind_normal_depth_texture();

    glActiveTexture(GL_TEXTURE1);
    glBindTexture(GL_TEXTURE_2D, textures.getID(noise));

    program = shaders.get_program_id(separable ? SEPARABLE_SSAO : SSAO_TEXTURE);
    GLint sampler_reference = glGetUniformLocation(program, "sampler");
    glUniform1i(sampler_reference, 0);

    GLint noise_reference = glGetUniformLocation(program, "noise");
    glUniform1i(noise_reference, 1);

    GLint viewport_width_reference = glGetUniformLocation(program, "viewport_width");
    glUniform1f(viewport_width_reference, viewport_width);

    GLint viewport_height_reference = glGetUniformLocation(program, "viewport_height");
    glUniform1f(viewport_height_reference, viewport_height);

    GLint radius_reference = glGetUniformLocation(program, "radius_modifier");
    glUniform1f(radius_reference, radius);

    projection_location = glGetUniformLocation(program, "projection");
    glUniformMatrix4fv(projection_location, 1, GL_FALSE, &projection[0][0]);

    view_location = glGetUniformLocation(program, "view");
    glUniformMatrix4fv(view_location, 1, GL_FALSE, &view[0][0]);

    glColor3f(1.0, 1.0, 1.0);
    glBegin(GL_QUADS);
        glVertex3f(-1, -1, -0.5);
        glVertex3f(1, -1, -0.5);
        glVertex3f(1, 1, -0.5);
        glVertex3f(-1, 1, -0.5);
    glEnd();

    shaders.select_shader(-1);

    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);

    glBindTexture(GL_TEXTURE_2D, ssao_texture);
    glGenerateMipmap(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, 0);

    //Blur the SSAO texture in X direction
    glViewport(0, 0, viewport_width, viewport_height);
   
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);

    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, frame_buffer_object);
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, blurred_ssao_texture_x, 0);
    check_frame_buffer();

    glClearColor(0.f, 0.f, 0.f, 0.f);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    shaders.select_shader(GAUSSIAN_X);

    glActiveTexture(GL_TEXTURE0);
    bind_ssao_texture();

    program = shaders.get_program_id(GAUSSIAN_X);

    sampler_reference = glGetUniformLocation(program, "sampler");
    glUniform1i(sampler_reference, 0);

    viewport_width_reference = glGetUniformLocation(program, "viewport_width");
    glUniform1f(viewport_width_reference, viewport_width);

    viewport_height_reference = glGetUniformLocation(program, "viewport_height");
    glUniform1f(viewport_height_reference, viewport_height);

    projection_location = glGetUniformLocation(program, "projection");
    glUniformMatrix4fv(projection_location, 1, GL_FALSE, &projection[0][0]);

    view_location = glGetUniformLocation(program, "view");
    glUniformMatrix4fv(view_location, 1, GL_FALSE, &view[0][0]);

    glColor3f(1.0, 1.0, 1.0);
    glBegin(GL_QUADS);
        glVertex3f(-1, -1, -0.5);
        glVertex3f(1, -1, -0.5);
        glVertex3f(1, 1, -0.5);
        glVertex3f(-1, 1, -0.5);
    glEnd();

    shaders.select_shader(-1);

    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);

    glBindTexture(GL_TEXTURE_2D, blurred_ssao_texture_x);
    glGenerateMipmap(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, 0);

    //Blur the SSAO texture in Y direction
    glViewport(0, 0, viewport_width, viewport_height);
   
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);

    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, frame_buffer_object);
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, blurred_ssao_texture_xy, 0);
    check_frame_buffer();

    glClearColor(0.f, 0.f, 0.f, 0.f);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    shaders.select_shader(GAUSSIAN_Y);

    glActiveTexture(GL_TEXTURE0);
    bind_blurred_ssao_texture_x();

    program = shaders.get_program_id(GAUSSIAN_Y);

    sampler_reference = glGetUniformLocation(program, "sampler");
    glUniform1i(sampler_reference, 0);

    viewport_width_reference = glGetUniformLocation(program, "viewport_width");
    glUniform1f(viewport_width_reference, viewport_width);

    viewport_height_reference = glGetUniformLocation(program, "viewport_height");
    glUniform1f(viewport_height_reference, viewport_height);

    projection_location = glGetUniformLocation(program, "projection");
    glUniformMatrix4fv(projection_location, 1, GL_FALSE, &projection[0][0]);

    view_location = glGetUniformLocation(program, "view");
    glUniformMatrix4fv(view_location, 1, GL_FALSE, &view[0][0]);

    glColor3f(1.0, 1.0, 1.0);
    glBegin(GL_QUADS);
        glVertex3f(-1, -1, -0.5);
        glVertex3f(1, -1, -0.5);
        glVertex3f(1, 1, -0.5);
        glVertex3f(-1, 1, -0.5);
    glEnd();

    shaders.select_shader(-1);

    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);

    glBindTexture(GL_TEXTURE_2D, blurred_ssao_texture_xy);
    glGenerateMipmap(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, 0);
}
Esempio n. 8
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    Matrix4D Matrix4D::operator * ( const float s ) const 
	{ 
		return Matrix4D( s*m[0], s*m[1], s*m[2], s*m[3] ); 
	}
Esempio n. 9
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    Matrix4D Matrix4D::operator - ( const Matrix4D& n ) const
	{ 
		return Matrix4D( m[0]-n[0], m[1]-n[1], m[2]-n[2], m[3]-n[3] ); 
	}
Esempio n. 10
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    Matrix4D Matrix4D::operator + ( const Matrix4D& n ) const
	{ 
		return Matrix4D( m[0]+n[0], m[1]+n[1], m[2]+n[2], m[3]+n[3] ); 
	}