public bool LoadFromKtx(string path)
{
string iblPath = path + "_ibl.ktx";
if (!File.Exists(iblPath))
{
return(false);
}
string skyPath = path + "_skybox.ktx";
if (!File.Exists(skyPath))
{
return(false);
}
var iblKtx = CreateKtx(iblPath);
var skyKtx = CreateKtx(skyPath);
_skyboxTexture = KtxUtility.CreateTexture(_engine, skyKtx, false);
_texture = KtxUtility.CreateTexture(_engine, iblKtx, false);
if (!iblKtx.GetSphericalHarmonics(out _bands))
{
return(false);
}
IndirectLight = IndirectLightBuilder.Create()
.WithReflections(_texture)
.WithIntensity(Intensity)
.Build(_engine);
Skybox = SkyboxBuilder.Create()
.WithEnvironment(_skyboxTexture)
.WithSun(true)
.Build(_engine);
return(true);
}
static void Main(string[] args)
{
VertexBuffer vertexBuffer = null;
IndexBuffer indexBuffer = null;
Material material = null;
MaterialInstance materialInstance = null;
Texture splatTexture = null;
int renderable = -1;
int cameraEntity = -1;
Camera camera = null;
Skybox skybox = null;
var app = new Application(
new WindowConfig()
{
Title = "point_sprites",
},
new ApplicationConfig()
);
app.Setup = (engine, view, scene) => {
splatTexture = CreateSplatTexture(engine);
Vertex[] kVertices = new Vertex[NUM_POINTS];
float[] kPointSizes = new float[NUM_POINTS];
ushort[] kIndices = new ushort[NUM_POINTS];
var dtheta = MathF.PI * 2 / NUM_POINTS;
var dsize = MAX_POINT_SIZE / NUM_POINTS;
var dcolor = 256.0f / NUM_POINTS;
byte[] vbo = new byte[NUM_POINTS * (8 + 4)];
MemoryStream vboStream = new MemoryStream(vbo);
BinaryWriter vboWriter = new BinaryWriter(vboStream);
for (int i = 0; i < NUM_POINTS; i++)
{
float theta = dtheta * i;
uint c = (uint)(dcolor * i);
kVertices[i].Position.X = MathF.Cos(theta);
kVertices[i].Position.Y = MathF.Sin(theta);
kVertices[i].Color = 0xff000000u | c | (c << 8) | (c << 16);
kPointSizes[i] = MIN_POINT_SIZE + dsize * i;
kIndices[i] = (ushort)i;
vboWriter.Write(kVertices[i].Position.X);
vboWriter.Write(kVertices[i].Position.Y);
vboWriter.Write(kVertices[i].Color);
}
vertexBuffer = VertexBufferBuilder.Create()
.WithVertexCount(NUM_POINTS)
.WithBufferCount(2)
.WithAttribute(VertexAttribute.Position, 0, ElementType.Float2, 0, Marshal.SizeOf <Vertex>())
.WithAttribute(VertexAttribute.Color, 0, ElementType.UByte4, Marshal.SizeOf <Vector2>(), Marshal.SizeOf <Vertex>())
.WithNormalized(VertexAttribute.Color)
.WithAttribute(VertexAttribute.Custom0, 1, ElementType.Float, 0, Marshal.SizeOf <float>())
.Build(engine);
vertexBuffer.SetBufferAt(engine, 0, vbo);
vertexBuffer.SetBufferAt(engine, 1, kPointSizes);
indexBuffer = IndexBufferBuilder.Create()
.WithIndexCount(NUM_POINTS)
.WithBufferType(IndexType.UShort)
.Build(engine);
indexBuffer.SetBuffer(engine, kIndices);
var sampleData = new SampleDataLoader();
material = MaterialBuilder.Create()
.WithPackage(sampleData.LoadPointSprites())
.Build(engine);
renderable = EntityManager.Create();
materialInstance = material.CreateInstance();
materialInstance.SetParameter("fade", splatTexture, new TextureSampler(SamplerMinFilter.Linear, SamplerMagFilter.Linear));
RenderableBuilder.Create()
.WithBoundingBox(
new Box(
new Vector3(-1, -1, -1),
new Vector3(1, 1, 1)
)
)
.WithMaterial(0, materialInstance)
.WithGeometry(0, PrimitiveType.Points, vertexBuffer, indexBuffer, 0, NUM_POINTS)
.WithCulling(false)
.WithReceiveShadows(false)
.WithCastShadows(false)
.Build(engine, renderable);
scene.AddEntity(renderable);
cameraEntity = EntityManager.Create();
camera = engine.CreateCamera(cameraEntity);
view.Camera = camera;
skybox = SkyboxBuilder.Create()
.WithColor(new Color(0.1f, 0.125f, 0.25f, 1.0f))
.Build(engine);
scene.Skybox = skybox;
};
app.Animate = (engine, view, now) => {
var zoom = 1.5f;
var width = view.Viewport.Width;
var height = view.Viewport.Height;
var aspect = (float)width / height;
camera.SetProjection(Projection.Ortho, -aspect * zoom, aspect * zoom, -zoom, zoom, 0, 1);
var tcm = engine.TransformManager;
tcm.SetTransform(tcm.GetInstance(renderable), Matrix4x4.CreateFromAxisAngle(Vector3.UnitZ, now));
};
app.Cleanup = (engine, view, scene) => {
engine.Destroy(skybox);
engine.Destroy(renderable);
engine.Destroy(materialInstance);
engine.Destroy(material);
engine.Destroy(vertexBuffer);
engine.Destroy(indexBuffer);
engine.DestroyCameraComponent(cameraEntity);
EntityManager.Destroy(cameraEntity);
};
app.Run();
}
static void Main(string[] args)
{
Skybox skybox = null;
VertexBuffer vertexBuffer = null;
IndexBuffer indexBuffer = null;
Material material = null;
int renderable = -1;
Camera camera = null;
int cameraEntity = -1;
var vbo = new VertexBufferObject();
vbo.Write(new Vector2(1, 0));
vbo.Write(0xffff0000u);
vbo.Write(new Vector2(MathF.Cos(MathF.PI * 2 / 3), MathF.Sin(MathF.PI * 2 / 3)));
vbo.Write(0xff00ff00u);
vbo.Write(new Vector2(MathF.Cos(MathF.PI * 4 / 3), MathF.Sin(MathF.PI * 4 / 3)));
vbo.Write(0xff0000ffu);
var app = new Application(
new WindowConfig()
{
Title = "hellotriangle",
},
new ApplicationConfig()
);
app.Setup = (engine, view, scene) => {
skybox = SkyboxBuilder.Create()
.WithColor(new Color(0.1f, 0.125f, 0.25f, 1.0f))
.Build(engine);
scene.Skybox = skybox;
view.PostProcessingEnabled = false;
vertexBuffer = VertexBufferBuilder.Create()
.WithVertexCount(3)
.WithBufferCount(1)
.WithAttribute(VertexAttribute.Position, 0, ElementType.Float2, 0, 12)
.WithAttribute(VertexAttribute.Color, 0, ElementType.UByte4, 8, 12)
.WithNormalized(VertexAttribute.Color)
.Build(engine);
vertexBuffer.SetBufferAt(engine, 0, vbo);
indexBuffer = IndexBufferBuilder.Create()
.WithIndexCount(3)
.WithBufferType(IndexType.UShort)
.Build(engine);
indexBuffer.SetBuffer(engine, TRIANGLE_INDICES);
var sampleData = new SampleDataLoader();
material = MaterialBuilder.Create()
.WithPackage(sampleData.LoadBakedColor())
.Build(engine);
renderable = EntityManager.Create();
RenderableBuilder.Create()
.WithBoundingBox(
new Box(
new Vector3(-1, -1, -1),
new Vector3(1, 1, 1)
)
)
.WithMaterial(0, material.DefaultInstance)
.WithGeometry(0, PrimitiveType.Triangles, vertexBuffer, indexBuffer, 0, 3)
.WithCulling(false)
.WithReceiveShadows(false)
.WithCastShadows(false)
.Build(engine, renderable);
scene.AddEntity(renderable);
cameraEntity = EntityManager.Create();
camera = engine.CreateCamera(cameraEntity);
view.Camera = camera;
};
app.Cleanup = (engine, view, scene) => {
engine.Destroy(skybox);
engine.Destroy(renderable);
engine.Destroy(material);
engine.Destroy(vertexBuffer);
engine.Destroy(indexBuffer);
engine.DestroyCameraComponent(cameraEntity);
EntityManager.Destroy(cameraEntity);
};
app.Animate = (engine, view, now) => {
var ZOOM = 1.5f;
var w = view.Viewport.Width;
var h = view.Viewport.Height;
;
var aspect = (float)w / h;
camera.SetProjection(Projection.Ortho, -aspect * ZOOM, aspect * ZOOM, -ZOOM, ZOOM, 0, 1);
var tcm = engine.TransformManager;
tcm.SetTransform(tcm.GetInstance(renderable), Matrix4x4.CreateFromAxisAngle(Vector3.UnitZ, now));
};
app.Run();
}
static void Main(string[] args)
{
Texture texture = null;
Skybox skybox = null;
VertexBuffer vertexBuffer = null;
IndexBuffer indexBuffer = null;
Material material = null;
MaterialInstance materialInstance = null;
Camera camera = null;
int cameraEntity = -1;
int renderable = -1;
var app = new Application(
new WindowConfig()
{
Title = "texturedquad"
},
new ApplicationConfig()
);
app.Setup = (engine, view, scene) => {
var path = Path.Combine(app.RootAssetPath, "textures/Moss_01/Moss_01_Color.png");
if (!File.Exists(path))
{
Console.WriteLine("The texture {0} does not exist", path);
Environment.Exit(1);
}
using (var stream = File.OpenRead(path)) {
var imageResult = ImageResult.FromStream(stream, ColorComponents.RedGreenBlueAlpha);
Console.WriteLine("Loaded texture: {0}x{1}", imageResult.Width, imageResult.Height);
var pixelBuffer = new PixelBufferDescriptor(imageResult.Data, PixelDataFormat.Rgba, PixelDataType.UByte);
texture = TextureBuilder.Create()
.WithWidth(imageResult.Width)
.WithHeight(imageResult.Height)
.WithLevels(1)
.WithSampler(TextureSamplerType.Texture2d)
.WithFormat(TextureFormat.Rgba8)
.Build(engine);
texture.SetImage(engine, 0, pixelBuffer);
}
// Set up view
skybox = SkyboxBuilder.Create()
.WithColor(new Color(0.1f, 0.125f, 0.25f, 1.0f))
.Build(engine);
scene.Skybox = skybox;
cameraEntity = EntityManager.Create();
camera = engine.CreateCamera(cameraEntity);
view.PostProcessingEnabled = false;
view.Camera = camera;
// Create quad renderable
var vbo = new VertexBufferObject();
vbo.Write(new Vector2(-1, -1));
vbo.Write(new Vector2(0, 0));
vbo.Write(new Vector2(1, -1));
vbo.Write(new Vector2(1, 0));
vbo.Write(new Vector2(-1, 1));
vbo.Write(new Vector2(0, 1));
vbo.Write(new Vector2(1, 1));
vbo.Write(new Vector2(1, 1));
vertexBuffer = VertexBufferBuilder.Create()
.WithVertexCount(4)
.WithBufferCount(1)
.WithAttribute(VertexAttribute.Position, 0, ElementType.Float2, 0, 16)
.WithAttribute(VertexAttribute.Uv0, 0, ElementType.Float2, 8, 16)
.Build(engine);
vertexBuffer.SetBufferAt(engine, 0, vbo);
var sampleData = new SampleDataLoader();
indexBuffer = IndexBufferBuilder.Create()
.WithIndexCount(6)
.WithBufferType(IndexType.UShort)
.Build(engine);
indexBuffer.SetBuffer(engine, QUAD_INDICES);
material = MaterialBuilder.Create()
.WithPackage(sampleData.LoadBakedTexture())
.Build(engine);
var sampler = new TextureSampler(SamplerMinFilter.Linear, SamplerMagFilter.Linear);
materialInstance = material.CreateInstance();
materialInstance.SetParameter("albedo", texture, sampler);
renderable = EntityManager.Create();
RenderableBuilder.Create()
.WithBoundingBox(
new Box(
new Vector3(-1, -1, -1),
new Vector3(1, 1, 1)
)
)
.WithMaterial(0, materialInstance)
.WithGeometry(0, PrimitiveType.Triangles, vertexBuffer, indexBuffer, 0, 6)
.WithCulling(false)
.WithReceiveShadows(false)
.WithCastShadows(false)
.Build(engine, renderable);
scene.AddEntity(renderable);
};
app.Cleanup = (engine, view, scene) => {
engine.Destroy(skybox);
engine.Destroy(renderable);
engine.Destroy(materialInstance);
engine.Destroy(material);
engine.Destroy(texture);
engine.Destroy(vertexBuffer);
engine.Destroy(indexBuffer);
engine.DestroyCameraComponent(cameraEntity);
EntityManager.Destroy(cameraEntity);
};
app.Animate = (engine, view, now) => {
var zoom = 2.0f + 2.0f * MathF.Sin(now);
var width = view.Viewport.Width;
var height = view.Viewport.Height;
var aspect = (float)width / (float)height;
camera.SetProjection(Projection.Ortho,
-aspect * zoom, aspect * zoom,
-zoom, zoom,
-1, 1
);
};
app.Run();
}
public bool LoadFromDirectory(string path)
{
// First check if KTX files are available.
if (LoadFromKtx(Path.Combine(path, Path.GetFileName(path))))
{
return(true);
}
// Read spherical harmonics
string sh = Path.Combine(path, "sh.txt");
var pattern = new Regex(@"^\([\s]{0,}(.+),[\s]{0,}(.+),[\s]{0,}(.+)\)", RegexOptions.Compiled);
if (File.Exists(sh))
{
var lines = File.ReadAllLines(sh);
if (lines.Length != _bands.Length)
{
return(false);
}
for (var i = 0; i < _bands.Length; i++)
{
var matches = pattern.Matches(lines[i]);
if (!pattern.IsMatch(lines[0]))
{
return(false);
}
var parts = matches[0].Groups;
if (!float.TryParse(parts[1].Value, out var r))
{
return(false);
}
if (!float.TryParse(parts[2].Value, out var g))
{
return(false);
}
if (!float.TryParse(parts[3].Value, out var b))
{
return(false);
}
_bands[i] = new Vector3(r, g, b);
}
}
else
{
return(false);
}
// Read mip-mapped cubemap
string prefix = "m";
if (!LoadCubemapLevel(ref _texture, path, 0, prefix + "0_"))
{
return(false);
}
int numLevels = _texture.Levels;
for (var i = 1; i < numLevels; i++)
{
LoadCubemapLevel(ref _texture, path, i, prefix + i + "_");
}
if (!LoadCubemapLevel(ref _skyboxTexture, path))
{
return(false);
}
IndirectLight = IndirectLightBuilder.Create()
.WithReflections(_texture)
.WithIrradiance(3, _bands)
.WithIntensity(Intensity)
.Build(_engine);
Skybox = SkyboxBuilder.Create()
.WithEnvironment(_skyboxTexture)
.WithSun(true)
.Build(_engine);
return(true);
}