protected override void CreateResources(ResourceFactory factory)
{
_instanceCount = 8000u;
_camera.Position = new Vector3(-36f, 20f, 100f);
_camera.Pitch = -0.3f;
_camera.Yaw = 0.1f;
_cameraProjViewBuffer = factory.CreateBuffer(
new BufferDescription((uint)(Unsafe.SizeOf <Matrix4x4>() * 2), BufferUsage.UniformBuffer | BufferUsage.Dynamic));
_lightInfoBuffer = factory.CreateBuffer(new BufferDescription(32, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
_rotationInfoBuffer = factory.CreateBuffer(new BufferDescription(16, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
_lightDir = Vector3.Normalize(new Vector3(0.3f, -0.75f, -0.3f));
VertexLayoutDescription sharedVertexLayout = new VertexLayoutDescription(
new VertexElementDescription("Position", VertexElementSemantic.Position, VertexElementFormat.Float3),
new VertexElementDescription("Normal", VertexElementSemantic.Normal, VertexElementFormat.Float3),
new VertexElementDescription("TexCoord", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float2));
bool etc2Supported = GraphicsDevice.GetPixelFormatSupport(
PixelFormat.ETC2_R8_G8_B8_UNorm,
TextureType.Texture2D,
TextureUsage.Sampled);
PixelFormat pixelFormat = etc2Supported ? PixelFormat.ETC2_R8_G8_B8_UNorm : PixelFormat.BC3_UNorm;
byte[] rockTextureData = LoadEmbeddedAsset <byte[]>(
etc2Supported
? "texturearray_rocks_etc2_unorm.binary"
: "texturearray_rocks_bc3_unorm.binary");
Texture rockTexture = KtxFile.LoadTexture(
GraphicsDevice,
ResourceFactory,
rockTextureData,
pixelFormat);
TextureView rockTextureView = ResourceFactory.CreateTextureView(rockTexture);
ResourceLayoutElementDescription[] resourceLayoutElementDescriptions =
{
new ResourceLayoutElementDescription("ProjView", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("RotationInfo", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("LightInfo", ResourceKind.UniformBuffer, ShaderStages.Fragment),
};
ResourceLayoutDescription resourceLayoutDescription = new ResourceLayoutDescription(resourceLayoutElementDescriptions);
ResourceLayout sharedLayout = factory.CreateResourceLayout(resourceLayoutDescription);
ResourceLayoutElementDescription[] textureLayoutDescriptions =
{
new ResourceLayoutElementDescription("Tex", ResourceKind.TextureReadOnly, ShaderStages.Fragment),
new ResourceLayoutElementDescription("Samp", ResourceKind.Sampler, ShaderStages.Fragment)
};
ResourceLayout textureLayout = factory.CreateResourceLayout(new ResourceLayoutDescription(textureLayoutDescriptions));
BindableResource[] bindableResources = new BindableResource[] { _cameraProjViewBuffer, _rotationInfoBuffer, _lightInfoBuffer };
ResourceSetDescription resourceSetDescription = new ResourceSetDescription(sharedLayout, bindableResources);
_sharedResourceSet = factory.CreateResourceSet(resourceSetDescription);
BindableResource[] instanceBindableResources = { rockTextureView, GraphicsDevice.LinearSampler };
_instanceTextureSet = factory.CreateResourceSet(new ResourceSetDescription(textureLayout, instanceBindableResources));
ProcessedModel rock = LoadEmbeddedAsset <ProcessedModel>("rock01.binary");
_rockModel = rock.MeshParts[0].CreateDeviceResources(GraphicsDevice, ResourceFactory);
VertexLayoutDescription vertexLayoutPerInstance = new VertexLayoutDescription(
new VertexElementDescription("InstancePosition", VertexElementSemantic.Position, VertexElementFormat.Float3),
new VertexElementDescription("InstanceRotation", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float3),
new VertexElementDescription("InstanceScale", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float3),
new VertexElementDescription("InstanceTexArrayIndex", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Int1));
vertexLayoutPerInstance.InstanceStepRate = 1;
_instanceVB = ResourceFactory.CreateBuffer(new BufferDescription(InstanceInfo.Size * _instanceCount, BufferUsage.VertexBuffer));
InstanceInfo[] infos = new InstanceInfo[_instanceCount];
Random r = new Random();
float orbitDistance = 50f;
for (uint i = 0; i < _instanceCount / 2; i++)
{
float angle = (float)(r.NextDouble() * Math.PI * 2);
infos[i] = new InstanceInfo(
new Vector3(
((float)Math.Cos(angle) * orbitDistance) + (float)(-10 + r.NextDouble() * 20),
(float)(-1.5 + r.NextDouble() * 3),
((float)Math.Sin(angle) * orbitDistance) + (float)(-10 + r.NextDouble() * 20)),
new Vector3(
(float)(r.NextDouble() * Math.PI * 2),
(float)(r.NextDouble() * Math.PI * 2),
(float)(r.NextDouble() * Math.PI * 2)),
new Vector3((float)(0.65 + r.NextDouble() * 0.35)),
r.Next(0, (int)rockTexture.ArrayLayers));
}
orbitDistance = 100f;
for (uint i = _instanceCount / 2; i < _instanceCount; i++)
{
float angle = (float)(r.NextDouble() * Math.PI * 2);
infos[i] = new InstanceInfo(
new Vector3(
((float)Math.Cos(angle) * orbitDistance) + (float)(-10 + r.NextDouble() * 20),
(float)(-1.5 + r.NextDouble() * 3),
((float)Math.Sin(angle) * orbitDistance) + (float)(-10 + r.NextDouble() * 20)),
new Vector3(
(float)(r.NextDouble() * Math.PI * 2),
(float)(r.NextDouble() * Math.PI * 2),
(float)(r.NextDouble() * Math.PI * 2)),
new Vector3((float)(0.65 + r.NextDouble() * 0.35)),
r.Next(0, (int)rockTexture.ArrayLayers));
}
GraphicsDevice.UpdateBuffer(_instanceVB, 0, infos);
Shader instanceVS = LoadShader(ResourceFactory, "Instance", ShaderStages.Vertex, "VS");
Shader instanceFS = LoadShader(ResourceFactory, "Instance", ShaderStages.Fragment, "FS");
GraphicsPipelineDescription pipelineDescription = new GraphicsPipelineDescription()
{
BlendState = BlendStateDescription.SingleOverrideBlend,
DepthStencilState = new DepthStencilStateDescription(
depthTestEnabled: true,
depthWriteEnabled: true,
comparisonKind: ComparisonKind.LessEqual),
RasterizerState = new RasterizerStateDescription(
cullMode: FaceCullMode.Back,
fillMode: PolygonFillMode.Solid,
frontFace: FrontFace.Clockwise,
depthClipEnabled: true,
scissorTestEnabled: false
),
PrimitiveTopology = PrimitiveTopology.TriangleList,
ResourceLayouts = new ResourceLayout[] { sharedLayout, textureLayout },
ShaderSet = new ShaderSetDescription(
// The ordering of layouts directly impacts shader layout schemes
vertexLayouts: new VertexLayoutDescription[] { sharedVertexLayout, vertexLayoutPerInstance },
shaders: new Shader[] { instanceVS, instanceFS }
),
Outputs = MainSwapchain.Framebuffer.OutputDescription
};
_instancePipeline = factory.CreateGraphicsPipeline(pipelineDescription);
// Create planet Pipeline
// Almost everything is the same as the rock Pipeline,
// except no instance vertex buffer is needed, and different shaders are used.
pipelineDescription.ShaderSet = new ShaderSetDescription(
new[] { sharedVertexLayout },
new[]
{
LoadShader(ResourceFactory, "Planet", ShaderStages.Vertex, "VS"),
LoadShader(ResourceFactory, "Planet", ShaderStages.Fragment, "FS"),
});
_planetPipeline = ResourceFactory.CreateGraphicsPipeline(pipelineDescription);
ProcessedModel planet = LoadEmbeddedAsset <ProcessedModel>("sphere.binary");
_planetModel = planet.MeshParts[0].CreateDeviceResources(GraphicsDevice, ResourceFactory);
byte[] planetTexData = LoadEmbeddedAsset <byte[]>(
etc2Supported
? "lavaplanet_etc2_unorm.binary"
: "lavaplanet_bc3_unorm.binary");
Texture planetTexture = KtxFile.LoadTexture(GraphicsDevice, ResourceFactory, planetTexData, pixelFormat);
TextureView planetTextureView = ResourceFactory.CreateTextureView(planetTexture);
_planetTextureSet = ResourceFactory.CreateResourceSet(new ResourceSetDescription(textureLayout, planetTextureView, GraphicsDevice.Aniso4xSampler));
// Starfield resources
ResourceLayout invCameraInfoLayout = ResourceFactory.CreateResourceLayout(new ResourceLayoutDescription(
new ResourceLayoutElementDescription("InvCameraInfo", ResourceKind.UniformBuffer, ShaderStages.Fragment)));
_viewInfoBuffer = ResourceFactory.CreateBuffer(new BufferDescription((uint)Unsafe.SizeOf <InvCameraInfo>(), BufferUsage.UniformBuffer | BufferUsage.Dynamic));
_viewInfoSet = ResourceFactory.CreateResourceSet(new ResourceSetDescription(invCameraInfoLayout, _viewInfoBuffer));
ShaderSetDescription starfieldShaders = new ShaderSetDescription(
Array.Empty <VertexLayoutDescription>(),
new[]
{
LoadShader(ResourceFactory, "Starfield", ShaderStages.Vertex, "VS"),
LoadShader(ResourceFactory, "Starfield", ShaderStages.Fragment, "FS"),
});
_starfieldPipeline = ResourceFactory.CreateGraphicsPipeline(new GraphicsPipelineDescription(
BlendStateDescription.SingleOverrideBlend,
DepthStencilStateDescription.Disabled,
RasterizerStateDescription.CullNone,
PrimitiveTopology.TriangleList,
starfieldShaders,
new[] { invCameraInfoLayout },
MainSwapchain.Framebuffer.OutputDescription));
_commandList = factory.CreateCommandList();
}
protected override void CreateResources(ResourceFactory factory)
{
_instanceCount = 1 << 14;
_camera.Position = new Vector3(-36f, 20f, 100f);
_camera.Pitch = -0.3f;
_camera.Yaw = 0.1f;
_cameraProjViewBuffer = factory.CreateBuffer(
new BufferDescription((uint)(Unsafe.SizeOf <Matrix4x4>() * 2), BufferUsage.UniformBuffer | BufferUsage.Dynamic));
_lightInfoBuffer = factory.CreateBuffer(new BufferDescription(32, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
_rotationInfoBuffer = factory.CreateBuffer(new BufferDescription(16, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
_lightDir = Vector3.Normalize(new Vector3(0.3f, -0.75f, -0.3f));
VertexLayoutDescription sharedVertexLayout = new VertexLayoutDescription(
new VertexElementDescription("Position", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float3),
new VertexElementDescription("Normal", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float3),
new VertexElementDescription("TexCoord", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float2));
bool etc2Supported = GraphicsDevice.GetPixelFormatSupport(
PixelFormat.ETC2_R8_G8_B8_UNorm,
TextureType.Texture2D,
TextureUsage.Sampled);
PixelFormat pixelFormat = etc2Supported ? PixelFormat.ETC2_R8_G8_B8_UNorm : PixelFormat.BC3_UNorm;
byte[] rockTextureData = LoadEmbeddedAsset <byte[]>(
etc2Supported
? "texturearray_rocks_etc2_unorm.binary"
: "texturearray_rocks_bc3_unorm.binary");
Texture rockTexture = KtxFile.LoadTexture(
GraphicsDevice,
ResourceFactory,
rockTextureData,
pixelFormat);
TextureView rockTextureView = ResourceFactory.CreateTextureView(rockTexture);
ResourceLayoutElementDescription[] resourceLayoutElementDescriptions =
{
new ResourceLayoutElementDescription("LightInfo", ResourceKind.UniformBuffer, ShaderStages.Fragment),
new ResourceLayoutElementDescription("ProjView", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("RotationInfo", ResourceKind.UniformBuffer, ShaderStages.Vertex),
};
ResourceLayoutDescription resourceLayoutDescription = new ResourceLayoutDescription(resourceLayoutElementDescriptions);
ResourceLayout sharedLayout = factory.CreateResourceLayout(resourceLayoutDescription);
ResourceLayoutElementDescription[] textureLayoutDescriptions =
{
new ResourceLayoutElementDescription("Tex", ResourceKind.TextureReadOnly, ShaderStages.Fragment),
new ResourceLayoutElementDescription("Samp", ResourceKind.Sampler, ShaderStages.Fragment)
};
ResourceLayout textureLayout = factory.CreateResourceLayout(new ResourceLayoutDescription(textureLayoutDescriptions));
BindableResource[] bindableResources = new BindableResource[] { _lightInfoBuffer, _cameraProjViewBuffer, _rotationInfoBuffer };
ResourceSetDescription resourceSetDescription = new ResourceSetDescription(sharedLayout, bindableResources);
_sharedResourceSet = factory.CreateResourceSet(resourceSetDescription);
BindableResource[] instanceBindableResources = { rockTextureView, GraphicsDevice.LinearSampler };
_instanceTextureSet = factory.CreateResourceSet(new ResourceSetDescription(textureLayout, instanceBindableResources));
ProcessedModel rock = LoadEmbeddedAsset <ProcessedModel>("sphere.binary");
_rockModel = rock.MeshParts[0].CreateDeviceResources(GraphicsDevice, ResourceFactory);
VertexLayoutDescription vertexLayoutPerInstancePos = new VertexLayoutDescription(
new VertexElementDescription("InstancePosition", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float3));
VertexLayoutDescription vertexLayoutPerInstanceScale = new VertexLayoutDescription(
new VertexElementDescription("InstanceScale", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float3));
VertexLayoutDescription vertexLayoutPerInstanceColor = new VertexLayoutDescription(
new VertexElementDescription("InstanceColor", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float3));
vertexLayoutPerInstancePos.InstanceStepRate = 1;
vertexLayoutPerInstanceScale.InstanceStepRate = 1;
vertexLayoutPerInstanceColor.InstanceStepRate = 1;
_instanceVBPos = ResourceFactory.CreateBuffer(new BufferDescription(Vector3.Size * _instanceCount, BufferUsage.VertexBuffer));
_instanceVBScale = ResourceFactory.CreateBuffer(new BufferDescription(Vector3.Size * _instanceCount, BufferUsage.VertexBuffer));
_instanceVBColor = ResourceFactory.CreateBuffer(new BufferDescription(Vector3.Size * _instanceCount, BufferUsage.VertexBuffer));
Vector3[] instancePos = new Vector3[_instanceCount];
Vector3[] instanceScale = new Vector3[_instanceCount];
Vector3[] instanceColors = new Vector3[_instanceCount];
Random r = new Random();
for (uint i = 0; i < _instanceCount; i++)
{
instancePos[i] = new Vector3(
1000.0f * ((float)r.NextDouble() - 0.5f),
200.0f * ((float)r.NextDouble() - 0.5f),
1000.0f * ((float)r.NextDouble() - 0.5f));
instanceScale[i] = new Vector3((float)(r.NextDouble() * 0.3));
instanceColors[i] = new Vector3((float)r.NextDouble() * 0.5f + 0.5f,
(float)r.NextDouble() * 0.5f + 0.5f,
(float)r.NextDouble() * 0.5f + 0.5f);
}
GraphicsDevice.UpdateBuffer(_instanceVBPos, 0, instancePos);
GraphicsDevice.UpdateBuffer(_instanceVBScale, 0, instanceScale);
GraphicsDevice.UpdateBuffer(_instanceVBColor, 0, instanceColors);
GraphicsPipelineDescription pipelineDescriptionRocks = new GraphicsPipelineDescription()
{
BlendState = BlendStateDescription.SingleOverrideBlend,
DepthStencilState = new DepthStencilStateDescription(
depthTestEnabled: true,
depthWriteEnabled: true,
comparisonKind: ComparisonKind.LessEqual),
RasterizerState = new RasterizerStateDescription(
cullMode: FaceCullMode.Back,
fillMode: PolygonFillMode.Solid,
frontFace: FrontFace.Clockwise,
depthClipEnabled: true,
scissorTestEnabled: false
),
PrimitiveTopology = PrimitiveTopology.TriangleList,
ResourceLayouts = new ResourceLayout[] { sharedLayout, textureLayout },
ShaderSet = new ShaderSetDescription(
// The ordering of layouts directly impacts shader layout schemes
vertexLayouts: new VertexLayoutDescription[] { sharedVertexLayout, vertexLayoutPerInstancePos, vertexLayoutPerInstanceScale, vertexLayoutPerInstanceColor },
shaders: LoadShaders("Instance")
),
Outputs = MainSwapchain.Framebuffer.OutputDescription
};
_instancePipeline = factory.CreateGraphicsPipeline(pipelineDescriptionRocks);
// Starfield resources
ResourceLayout invCameraInfoLayout = ResourceFactory.CreateResourceLayout(new ResourceLayoutDescription(
new ResourceLayoutElementDescription("InvCameraInfo", ResourceKind.UniformBuffer, ShaderStages.Fragment)));
_viewInfoBuffer = ResourceFactory.CreateBuffer(new BufferDescription((uint)Unsafe.SizeOf <MatrixPair>(), BufferUsage.UniformBuffer | BufferUsage.Dynamic));
_commandList = factory.CreateCommandList();
}
