public OpenTK_AssimpModel()
{
_version = openGLFactory.NewVersionInformation(Console.WriteLine);
_extensions = openGLFactory.NewExtensionInformation();
_debug_callback = openGLFactory.NewDebugCallback(Console.WriteLine);
// add "built-in" meshs
_model_names[_name_trefoil_knot] = _name_trefoil_knot;
// get wavefront files
List <string> names = new List <string>();
//Assembly assembly = Assembly.GetExecutingAssembly();
//names = new List<string>(assembly.GetManifestResourceNames());
string working_directory = Directory.GetCurrentDirectory();
if (Directory.Exists(working_directory))
{
names = new List <string>(Directory.GetFiles(working_directory, "*.obj", SearchOption.AllDirectories));
}
// add wavefront models
foreach (var name in new List <string>(names))
{
if (name.EndsWith(".obj"))
{
var user_name = name.Substring(0, name.Length - 4);
var pos = user_name.LastIndexOfAny(new char[] { '.', '\\' });
user_name = user_name.Substring(pos + 1, user_name.Length - pos - 1);
_model_names[user_name] = name;
}
}
}
//! On load window (once)
protected override void OnLoad()
{
_version = openGLFactory.NewVersionInformation(Console.WriteLine);
_extensions = openGLFactory.NewExtensionInformation();
_debug_callback = openGLFactory.NewDebugCallback(Console.WriteLine);
// Version strings
_version.Retrieve();
// Get OpenGL extensions
_extensions.Retrieve();
// Debug callback
_debug_callback.Init();
// Create shader program
string vert_shader = @"#version 460
layout (location = 0) in vec2 in_pos;
layout (location = 1) in vec2 in_uv;
out vec2 vUV;
layout (location = 0) uniform mat4 model;
layout (location = 1) uniform mat4 projection;
void main()
{
vUV = in_uv.xy;
gl_Position = projection * model * vec4(in_pos.xy, 0.0, 1.0);
}";
string frag_shader = @"#version 460
in vec2 vUV;
layout (binding=0) uniform sampler2D u_texture;
layout (location = 2) uniform vec3 textColor;
out vec4 fragColor;
void main()
{
vec2 uv = vUV.xy;
float text = texture(u_texture, uv).r;
fragColor = vec4(textColor.rgb*text, text);
}";
this._text_prog = openGLFactory.VertexAndFragmentShaderProgram(vert_shader, frag_shader);
this._text_prog.Generate();
this._text_prog.Use();
// load font
_font = new FreeTypeFont(32);
base.OnLoad();
}
public AboutViewModel(IVersionInformation versionInformationService)
{
_versionInformationService = versionInformationService;
AboutItems = new ObservableCollection <KeyValuePair <string, string> >()
{
new KeyValuePair <string, string>("Version Number:", _versionInformationService.VersionNumber),
};
CloseWindowCommand = new RelayCommand <ICloseable>(CloseWindow);
}
//! On load window (once)
protected override void OnLoad()
{
_version = openGLFactory.NewVersionInformation(Console.WriteLine);
_extensions = openGLFactory.NewExtensionInformation();
_debug_callback = openGLFactory.NewDebugCallback(Console.WriteLine);
// Version strings
_version.Retrieve();
// Get OpenGL extensions
_extensions.Retrieve();
// Debug callback
_debug_callback.Init();
// create Vertex Array Object, Array Buffer Object and Element Array Buffer Object
// [...]
// Create shader program
// [...]
// framebuffers
_fbos = new List <IFramebuffer>();
_fbos.Add(openGLFactory.NewFramebuffer());
_fbos[0].Create(_image_cx, _image_cy, IFramebuffer.Kind.texture, IFramebuffer.Format.RGBA_F32, true, false);
_fbos[0].Clear();
_fbos.Add(openGLFactory.NewFramebuffer());
_fbos[1].Create(_image_cx, _image_cy, IFramebuffer.Kind.texture, IFramebuffer.Format.RGBA_F32, true, false);
_fbos[1].Clear();
_fbos.Add(openGLFactory.NewFramebuffer());
_fbos[2].Create(_image_cx, _image_cy, IFramebuffer.Kind.texture, IFramebuffer.Format.RGBA_F32, true, false);
_fbos[2].Clear();
// create generators
this._generators = new List <TextureGenerator>();
this._generators.Add(new TextureGenerator(openGLFactory, TextureGenerator.TType.texture_test1, new ITexture[] { _fbos[0].Textures[0] }));
this._generators.Add(new TextureGenerator(openGLFactory, TextureGenerator.TType.heightmap_test1, new ITexture[] { _fbos[1].Textures[0] }));
this._generators.Add(new TextureGenerator(openGLFactory, TextureGenerator.TType.cone_step_map, new ITexture[] { _fbos[2].Textures[0] }, new ITexture[] { _fbos[1].Textures[0] }));
foreach (var generator in this._generators)
{
generator.GenetateProgram();
}
// states
GL.ClearColor(0.0f, 0.0f, 0.0f, 0.0f);
}
//! On load window (once)
protected override void OnLoad()
{
_version = openGLFactory.NewVersionInformation(Console.WriteLine);
_extensions = openGLFactory.NewExtensionInformation();
_debug_callback = openGLFactory.NewDebugCallback(Console.WriteLine);
// Version strings
_version.Retrieve();
// Get OpenGL extensions
_extensions.Retrieve();
// Debug callback
_debug_callback.Init();
// create Vertex Array Object, Array Buffer Object and Element Array Buffer Object
float[] vquad =
{
// x y z r g b a
-1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f,
1.0f, -1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f,
1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f,
-1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f
};
uint[] iquad = { 0, 1, 2, 0, 2, 3 };
TVertexFormat[] format =
{
new TVertexFormat(0, 0, 3, 0, false),
new TVertexFormat(0, 1, 4, 3, false),
};
int vao = GL.GenVertexArray();
GL.BindVertexArray(vao);
// Create shader program
string vert_shader = @"
#version 460 core
layout(std430, binding = 0) buffer TVertex
{
vec4 vertex[];
};
uniform mat4 u_mvp;
uniform vec2 u_resolution;
uniform float u_thickness;
void main()
{
int line_i = gl_VertexID / 6;
int tri_i = gl_VertexID % 6;
vec4 va[4];
for (int i=0; i<4; ++i)
{
va[i] = u_mvp * vertex[line_i+i];
va[i].xyz /= va[i].w;
va[i].xy = (va[i].xy + 1.0) * 0.5 * u_resolution;
}
vec2 v_line = normalize(va[2].xy - va[1].xy);
vec2 nv_line = vec2(-v_line.y, v_line.x);
vec4 pos;
if (tri_i == 0 || tri_i == 1 || tri_i == 3)
{
vec2 v_pred = normalize(va[1].xy - va[0].xy);
vec2 v_miter = normalize(nv_line + vec2(-v_pred.y, v_pred.x));
pos = va[1];
pos.xy += v_miter * u_thickness * (tri_i == 1 ? -0.5 : 0.5) / dot(v_miter, nv_line);
}
else
{
vec2 v_succ = normalize(va[3].xy - va[2].xy);
vec2 v_miter = normalize(nv_line + vec2(-v_succ.y, v_succ.x));
pos = va[2];
pos.xy += v_miter * u_thickness * (tri_i == 5 ? 0.5 : -0.5) / dot(v_miter, nv_line);
}
pos.xy = pos.xy / u_resolution * 2.0 - 1.0;
pos.xyz *= pos.w;
gl_Position = pos;
}";
string frag_shader = @"
#version 460 core
out vec4 fragColor;
uniform vec4 u_color;
void main()
{
fragColor = u_color;
}";
_test_prog = openGLFactory.VertexAndFragmentShaderProgram(vert_shader, frag_shader);
_test_prog.Generate();
mvpLocation = GL.GetUniformLocation(this._test_prog.Object, "u_mvp");
resolutionLocation = GL.GetUniformLocation(this._test_prog.Object, "u_resolution");
thicknessLocation = GL.GetUniformLocation(this._test_prog.Object, "u_thickness");
colorLocation = GL.GetUniformLocation(this._test_prog.Object, "u_color");
_test_prog.Use();
float[] p0 = { -1.0f, -1.0f, 0.0f, 1.0f };
float[] p1 = { 1.0f, -1.0f, 0.0f, 1.0f };
float[] p2 = { 1.0f, 1.0f, 0.0f, 1.0f };
float[] p3 = { -1.0f, 1.0f, 0.0f, 1.0f };
float[] line1 = p3.Concat(p0).Concat(p1).Concat(p2).Concat(p3).Concat(p0).Concat(p1).ToArray();
_lineBuffer1 = openGLFactory.NewStorageBuffer();
_lineBuffer1.Create(line1);
_no_vertices_1 = line1.Length / 4;
var ll2 = new List <float>();
for (int u = -8; u <= 368; u += 8)
{
double a = u * Math.PI / 180.0;
double c = Math.Cos(a), s = Math.Sin(a);
ll2.AddRange(new float[] { (float)c, (float)s, 0.0f, 1.0f });
}
float[] line2 = ll2.ToArray();
_lineBuffer2 = openGLFactory.NewStorageBuffer();
_lineBuffer2.Create(line2);
_no_vertices_2 = line2.Length / 4;
// states
GL.ClearColor(0.8f, 0.9f, 1.0f, 1.0f);
base.OnLoad();
}
public Rubiks()
{
_version = openGLFactory.NewVersionInformation(Console.WriteLine);
_extensions = openGLFactory.NewExtensionInformation();
_debug_callback = openGLFactory.NewDebugCallback(Console.WriteLine);
}
//! On load window (once)
protected override void OnLoad()
{
_version = openGLFactory.NewVersionInformation(Console.WriteLine);
_extensions = openGLFactory.NewExtensionInformation();
_debug_callback = openGLFactory.NewDebugCallback(Console.WriteLine);
// Version strings
_version.Retrieve();
// Get OpenGL extensions
_extensions.Retrieve();
// Debug callback
_debug_callback.Init();
// create Vertex Array Object, Array Buffer Object and Element Array Buffer Object
float[] vquad =
{
// x y z r g b a
-1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f,
1.0f, -1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f,
1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f,
-1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f
};
uint [] iquad = { 0, 1, 2, 0, 2, 3 };
TVertexFormat[] format =
{
new TVertexFormat(0, 0, 3, 0, false),
new TVertexFormat(0, 1, 4, 3, false),
};
_test_vao = openGLFactory.NewVertexArrayObject();
_test_vao.AppendVertexBuffer(0, 7, vquad);
_test_vao.Create(format, iquad);
// Create shader program
string vert_shader = @"#version 460 core
layout (location = 0) in vec4 a_pos;
layout (location = 1) in vec4 a_color;
out vec4 v_color;
uniform mat4 u_transform;
void main()
{
v_color = a_color;
gl_Position = u_transform * a_pos;
}";
string frag_shader = @"#version 460 core
out vec4 frag_color;
in vec4 v_color;
void main()
{
frag_color = v_color;
}";
this._test_prog = openGLFactory.VertexAndFragmentShaderProgram(vert_shader, frag_shader);
this._test_prog.Generate();
this._test_prog.Use();
// states
GL.ClearColor(0.2f, 0.3f, 0.3f, 1.0f);
base.OnLoad();
}
//! On load window (once)
protected override void OnLoad()
{
_version = openGLFactory.NewVersionInformation(Console.WriteLine);
_extensions = openGLFactory.NewExtensionInformation();
_debug_callback = openGLFactory.NewDebugCallback(Console.WriteLine);
// Version strings
_version.Retrieve();
// Get OpenGL extensions
_extensions.Retrieve();
// Debug callback
_debug_callback.Init();
// create Vertex Array Object, Array Buffer Object and Element Array Buffer Object
// ...
// Create shader program
string compute_shader =
@"#version 460
layout(local_size_x = 1, local_size_y = 1) in;
layout(rgba32f, binding = 1) writeonly uniform image2D img_output;
layout(location = 1) uniform vec4 u_color;
layout(location = 2) uniform float u_margin;
layout(location = 3) uniform float u_random;
layout(std430, binding = 1) buffer TCoord1
{
vec4 pos;
} coord_inout;
vec4[7] constants = vec4[7](
vec4(0.0, 0.85, 0.2, -0.15),
vec4(0.0, 0.04, -0.26, 0.28),
vec4(0.0, -0.04, 0.23, 0.26),
vec4(0.16, 0.85, 0.22, 0.24),
vec4(0.0, 0.0, 0.0, 0.0 ),
vec4(0.0, 1.6, 1.6, 0.44),
vec4(1.0, 86.0, 93.0, 100.0 ));
void main() {
vec2 dims = vec2(imageSize(img_output)); // fetch image dimensions
int i = 0;
for (; i < 4; ++i)
{
if (u_random*100.0 < constants[6][i])
break;
}
i = min(i, 3);
vec2 fern = vec2(
constants[0][i] * coord_inout.pos.x + constants[1][i] * coord_inout.pos.y + constants[4][i],
constants[2][i] * coord_inout.pos.x + constants[3][i] * coord_inout.pos.y + constants[5][i]);
coord_inout.pos.xy = fern;
vec2 pixel_coords = vec2(
(fern.x + 2.1820 + u_margin) * dims.x / (2.1820 + 2.6558 + 2.0 * u_margin),
dims.y - (-fern.y + 9.9983 + u_margin) * dims.y / (9.9983 + 2.0 * u_margin));
// output to a specific pixel in the image
imageStore(img_output, ivec2(pixel_coords), u_color);
}";
this._compute_prog = openGLFactory.ComputeShaderProgram(compute_shader);
this._compute_prog.Generate();
// Model view projection shader storage block objects and buffers
_coord_ssbo = openGLFactory.NewStorageBuffer();
TCoordinate coord_data = new TCoordinate(Vector2.Zero);
this._coord_ssbo.Create(ref coord_data, IStorageBuffer.Usage.ReadWrite);
this._coord_ssbo.Bind(1);
// framebuffers
_fbo = openGLFactory.NewFramebuffer();
_fbo.Create(_image_cx, _image_cy, IFramebuffer.Kind.texture, IFramebuffer.Format.RGBA_F32, true, false);
_fbo.Clear(new Color4(0.2f, 0.1f, 0.0f, 1.0f));
// states
GL.ClearColor(0.0f, 0.0f, 0.0f, 0.0f);
base.OnLoad();
}
//! On load window (once)
protected override void OnLoad()
{
_version = openGLFactory.NewVersionInformation(Console.WriteLine);
_extensions = openGLFactory.NewExtensionInformation();
_debug_callback = openGLFactory.NewDebugCallback(Console.WriteLine);
// Version strings
_version.Retrieve();
// Get OpenGL extensions
_extensions.Retrieve();
// Debug callback
_debug_callback.Init();
// create Vertex Array Object, Array Buffer Object and Element Array Buffer Object
(float[] attributes, uint[] indices) = new TrefoilKnot(256, 16).Create();
TVertexFormat[] format =
{
new TVertexFormat(0, 0, 3, 0, false),
new TVertexFormat(0, 1, 3, 3, false),
//new TVertexFormat(0, ?, 2, 6, false),
new TVertexFormat(0, 2, 4, 8, false),
};
_test_vao = openGLFactory.NewVertexArrayObject();
_test_vao.AppendVertexBuffer(0, 12, attributes);
_test_vao.Create(format, indices);
_test_vao.Bind();
// Create shader program
string vert_shader = @"#version 460 core
layout (location = 0) in vec4 a_pos;
layout (location = 1) in vec3 a_nv;
layout (location = 2) in vec4 a_color;
layout (location = 0) out TVertexData
{
vec3 pos;
vec3 nv;
vec4 col;
} outData;
layout(std430, binding = 1) buffer MVP
{
mat4 proj;
mat4 view;
mat4 model;
} mvp;
void main()
{
mat4 mv_mat = mvp.view * mvp.model;
mat3 normal_mat = inverse(transpose(mat3(mv_mat)));
outData.nv = normalize(normal_mat * a_nv);
outData.col = a_color;
vec4 viewPos = mv_mat * a_pos;
outData.pos = viewPos.xyz / viewPos.w;
gl_Position = mvp.proj * viewPos;
}";
string frag_shader = @"#version 460 core
out vec4 frag_color;
layout (location = 0) in TVertexData
{
vec3 pos;
vec3 nv;
vec4 col;
} inData;
layout(std430, binding = 2) buffer TLight
{
vec4 u_lightDir;
float u_ambient;
float u_diffuse;
float u_specular;
float u_shininess;
} light_data;
void main()
{
vec3 color = inData.col.rgb;
// ambient part
vec3 lightCol = light_data.u_ambient * color;
vec3 normalV = normalize( inData.nv );
vec3 eyeV = normalize( -inData.pos );
vec3 lightV = normalize( -light_data.u_lightDir.xyz );
// diffuse part
float NdotL = max( 0.0, dot( normalV, lightV ) );
lightCol += NdotL * light_data.u_diffuse * color;
// specular part
vec3 halfV = normalize( eyeV + lightV );
float NdotH = max( 0.0, dot( normalV, halfV ) );
float kSpecular = ( light_data.u_shininess + 2.0 ) * pow( NdotH, light_data.u_shininess ) / ( 2.0 * 3.14159265 );
lightCol += kSpecular * light_data.u_specular * color;
frag_color = vec4( lightCol.rgb, inData.col.a );
}";
this._test_prog = openGLFactory.VertexAndFragmentShaderProgram(vert_shader, frag_shader);
this._test_prog.Generate();
// Model view projection shader storage block objects and buffers
TMVP mvp = new TMVP(Matrix4.Identity, Matrix4.Identity, Matrix4.Identity);
this._mvp_ssbo = openGLFactory.NewStorageBuffer();
this._mvp_ssbo.Create(ref mvp);
this._mvp_ssbo.Bind(1);
TLightSource light_source = new TLightSource(new Vector4(-1.0f, -0.5f, -2.0f, 0.0f), 0.2f, 0.8f, 0.8f, 10.0f);
this._light_ssbo = openGLFactory.NewStorageBuffer();
this._light_ssbo.Create(ref light_source);
this._light_ssbo.Bind(2);
// states
GL.ClearColor(0.2f, 0.3f, 0.3f, 1.0f);
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.CullFace);
GL.FrontFace(FrontFaceDirection.Ccw);
GL.CullFace(CullFaceMode.Back);
// matrices and controller
this._view = Matrix4.LookAt(0.0f, 0.0f, 1.5f, 0, 0, 0, 0, 1, 0);
var spin = new ModelSpinningControls(
() => { return(this._period); },
() => { return(new float[] { 0, 0, (float)this.Size.X, (float)this.Size.Y }); },
() => { return(this._view); }
);
spin.SetAttenuation(1.0f, 0.05f, 0.0f);
this._controls = spin;
base.OnLoad();
}
//! On load window (once)
protected override void OnLoad()
{
_version = openGLFactory.NewVersionInformation(Console.WriteLine);
_extensions = openGLFactory.NewExtensionInformation();
_debug_callback = openGLFactory.NewDebugCallback(Console.WriteLine);
// Version strings
_version.Retrieve();
// Get OpenGL extensions
_extensions.Retrieve();
// Debug callback
_debug_callback.Init();
// create Vertex Array Object, Array Buffer Object and Element Array Buffer Object
float[] vquad =
{
// x y z u v
-0.5f, -0.5f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.0f, 1.0f, 1.0f,
0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, 0.0f, 0.0f, 0.0f
};
uint[] iquad = { 0, 1, 2, 0, 2, 3 };
TVertexFormat[] format =
{
new TVertexFormat(0, 0, 3, 0, false),
new TVertexFormat(0, 1, 2, 3, false),
};
_test_vao = openGLFactory.NewVertexArrayObject();
_test_vao.AppendVertexBuffer(0, 5, vquad);
_test_vao.Create(format, iquad);
// Create texture
Assembly assembly = Assembly.GetExecutingAssembly();
string[] names = assembly.GetManifestResourceNames();
Stream resource_stream = assembly.GetManifestResourceStream("OpenTK_example_3.Resource.background.jpg");
_test_texture = openGLFactory.NewTexture();
_test_texture.Create2D(new Bitmap(resource_stream));
// Create shader program
string vert_shader = @"#version 460 core
layout (location = 0) in vec4 a_pos;
layout (location = 1) in vec2 a_uv;
out vec2 v_uv;
void main()
{
v_uv = a_uv;
gl_Position = a_pos;
}";
string frag_shader = @"#version 460 core
out vec4 frag_color;
in vec2 v_uv;
layout(binding = 7) uniform sampler2D u_texture;
void main()
{
frag_color = texture(u_texture, v_uv).rgba;
}";
this._test_prog = openGLFactory.VertexAndFragmentShaderProgram(vert_shader, frag_shader);
this._test_prog.Generate();
this._test_prog.Use();
// states
GL.ClearColor(0.2f, 0.3f, 0.3f, 1.0f);
base.OnLoad();
}
