static void CreateResources()
{
var factory = _graphicsDevice.ResourceFactory;
VertexPositionColor[] vertices =
{
new VertexPositionColor(new Vector2(-.75f, .75f), RgbaFloat.Red),
new VertexPositionColor(new Vector2(.75f, .75f), RgbaFloat.Green),
new VertexPositionColor(new Vector2(-.75f, -.75f), RgbaFloat.Blue),
new VertexPositionColor(new Vector2(.75f, -.75f), RgbaFloat.Yellow)
};
ushort[] indicies = { 0, 1, 2, 3 };
_vertexBuffer = factory.CreateBuffer(new BufferDescription(4 * VertexPositionColor.SizeInBytes, BufferUsage.VertexBuffer));
_indexBuffer = factory.CreateBuffer(new BufferDescription(4 * sizeof(uint), BufferUsage.IndexBuffer));
_graphicsDevice.UpdateBuffer(_vertexBuffer, 0, vertices);
_graphicsDevice.UpdateBuffer(_indexBuffer, 0, indicies);
var description = new VertexLayoutDescription(
new VertexElementDescription("Position", VertexElementSemantic.Position, VertexElementFormat.Float2),
new VertexElementDescription("Color", VertexElementSemantic.Color, VertexElementFormat.Float4));
_vertexShader = LoadShader(ShaderStages.Vertex);
_fragmentShader = LoadShader(ShaderStages.Fragment);
var pipelineDescription = new GraphicsPipelineDescription()
{
BlendState = BlendStateDescription.SingleOverrideBlend,
DepthStencilState = new DepthStencilStateDescription(true, true, ComparisonKind.LessEqual),
RasterizerState = new RasterizerStateDescription(FaceCullMode.Back, PolygonFillMode.Solid, FrontFace.Clockwise, true, false),
PrimitiveTopology = PrimitiveTopology.TriangleStrip,
ResourceLayouts = System.Array.Empty <ResourceLayout>(),
ShaderSet = new ShaderSetDescription(new[] { description }, new[] { _vertexShader, _fragmentShader }),
Outputs = _graphicsDevice.SwapchainFramebuffer.OutputDescription
};
_pipeline = factory.CreateGraphicsPipeline(pipelineDescription);
_commandList = factory.CreateCommandList();
}
private void CreateResources(ResourceFactory factory)
{
_screenSizeBuffer = factory.CreateBuffer(new BufferDescription(16, BufferUsage.UniformBuffer));
_shiftBuffer = factory.CreateBuffer(new BufferDescription(16, BufferUsage.UniformBuffer));
_vertexBuffer = factory.CreateBuffer(new BufferDescription(16 * 4, BufferUsage.VertexBuffer));
_indexBuffer = factory.CreateBuffer(new BufferDescription(2 * 6, BufferUsage.IndexBuffer));
_computeShader = factory.CreateShader(new ShaderDescription(
ShaderStages.Compute,
File.ReadAllBytes(Path.Combine(AppContext.BaseDirectory, "Shaders", $"Compute.{GetExtension(factory.BackendType)}"))));
_computeLayout = factory.CreateResourceLayout(new ResourceLayoutDescription(
new ResourceLayoutElementDescription("Tex", ResourceKind.TextureReadWrite, ShaderStages.Compute),
new ResourceLayoutElementDescription("ScreenSizeBuffer", ResourceKind.UniformBuffer, ShaderStages.Compute),
new ResourceLayoutElementDescription("ShiftBuffer", ResourceKind.UniformBuffer, ShaderStages.Compute)));
ComputePipelineDescription computePipelineDesc = new ComputePipelineDescription(
new ShaderStageDescription(ShaderStages.Compute, _computeShader, "CS"),
new[] { _computeLayout });
_computePipeline = factory.CreateComputePipeline(ref computePipelineDesc);
_vertexShader = factory.CreateShader(new ShaderDescription(
ShaderStages.Vertex,
File.ReadAllBytes(Path.Combine(AppContext.BaseDirectory, "Shaders", $"Vertex.{GetExtension(factory.BackendType)}"))));
_fragmentShader = factory.CreateShader(new ShaderDescription(
ShaderStages.Fragment,
File.ReadAllBytes(Path.Combine(AppContext.BaseDirectory, "Shaders", $"Fragment.{GetExtension(factory.BackendType)}"))));
ShaderSetDescription shaderSet = new ShaderSetDescription(
new VertexLayoutDescription[]
{
new VertexLayoutDescription(
new VertexElementDescription("Position", VertexElementSemantic.Position, VertexElementFormat.Float2),
new VertexElementDescription("TexCoord", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float2))
},
new[]
{
new ShaderStageDescription(ShaderStages.Vertex, _vertexShader, "VS"),
new ShaderStageDescription(ShaderStages.Fragment, _fragmentShader, "FS")
});
_graphicsLayout = factory.CreateResourceLayout(new ResourceLayoutDescription(
new ResourceLayoutElementDescription("Tex", ResourceKind.TextureReadOnly, ShaderStages.Fragment),
new ResourceLayoutElementDescription("Tex11", ResourceKind.TextureReadOnly, ShaderStages.Fragment),
new ResourceLayoutElementDescription("Tex22", ResourceKind.TextureReadOnly, ShaderStages.Fragment),
new ResourceLayoutElementDescription("SS", ResourceKind.Sampler, ShaderStages.Fragment)));
GraphicsPipelineDescription fullScreenQuadDesc = new GraphicsPipelineDescription(
BlendStateDescription.SingleOverrideBlend,
DepthStencilStateDescription.Disabled,
new RasterizerStateDescription(FaceCullMode.Back, PolygonFillMode.Solid, FrontFace.Clockwise, false, false),
PrimitiveTopology.TriangleList,
shaderSet,
new[] { _graphicsLayout },
_gd.SwapchainFramebuffer.OutputDescription);
_graphicsPipeline = factory.CreateGraphicsPipeline(ref fullScreenQuadDesc);
_cl = factory.CreateCommandList();
CreateWindowSizedResources();
InitResources(factory);
}
private void CreateResources(ResourceFactory factory)
{
_particleBuffer = factory.CreateBuffer(
new BufferDescription(
(uint)Unsafe.SizeOf <ParticleInfo>() * ParticleCount,
BufferUsage.StructuredBufferReadWrite,
(uint)Unsafe.SizeOf <ParticleInfo>()));
_screenSizeBuffer = factory.CreateBuffer(new BufferDescription(16, BufferUsage.UniformBuffer));
_computeShader = factory.CreateShader(new ShaderDescription(
ShaderStages.Compute,
File.ReadAllBytes(Path.Combine(AppContext.BaseDirectory, "Shaders", $"Compute.{GetExtension(factory.BackendType)}"))));
ResourceLayout particleStorageLayout = factory.CreateResourceLayout(new ResourceLayoutDescription(
new ResourceLayoutElementDescription("ParticlesBuffer", ResourceKind.StructuredBufferReadWrite, ShaderStages.Compute)));
ResourceLayout screenSizeLayout = factory.CreateResourceLayout(new ResourceLayoutDescription(
new ResourceLayoutElementDescription("ScreenSizeBuffer", ResourceKind.UniformBuffer, ShaderStages.Compute)));
ComputePipelineDescription computePipelineDesc = new ComputePipelineDescription(
new ShaderStageDescription(ShaderStages.Compute, _computeShader, "CS"),
new[] { particleStorageLayout, screenSizeLayout });
_computePipeline = factory.CreateComputePipeline(ref computePipelineDesc);
_computeResourceSet = factory.CreateResourceSet(new ResourceSetDescription(particleStorageLayout, _particleBuffer));
_computeScreenSizeResourceSet = factory.CreateResourceSet(new ResourceSetDescription(screenSizeLayout, _screenSizeBuffer));
_vertexShader = factory.CreateShader(new ShaderDescription(
ShaderStages.Vertex,
File.ReadAllBytes(Path.Combine(AppContext.BaseDirectory, "Shaders", $"Vertex.{GetExtension(factory.BackendType)}"))));
_fragmentShader = factory.CreateShader(new ShaderDescription(
ShaderStages.Fragment,
File.ReadAllBytes(Path.Combine(AppContext.BaseDirectory, "Shaders", $"Fragment.{GetExtension(factory.BackendType)}"))));
ShaderSetDescription shaderSet = new ShaderSetDescription(
Array.Empty <VertexLayoutDescription>(),
new[]
{
new ShaderStageDescription(ShaderStages.Vertex, _vertexShader, "VS"),
new ShaderStageDescription(ShaderStages.Fragment, _fragmentShader, "FS")
});
particleStorageLayout = factory.CreateResourceLayout(new ResourceLayoutDescription(
new ResourceLayoutElementDescription("ParticlesBuffer", ResourceKind.StructuredBufferReadOnly, ShaderStages.Vertex)));
screenSizeLayout = factory.CreateResourceLayout(new ResourceLayoutDescription(
new ResourceLayoutElementDescription("ScreenSizeBuffer", ResourceKind.UniformBuffer, ShaderStages.Vertex)));
GraphicsPipelineDescription particleDrawPipelineDesc = new GraphicsPipelineDescription(
BlendStateDescription.SingleOverrideBlend,
DepthStencilStateDescription.Disabled,
RasterizerStateDescription.Default,
PrimitiveTopology.PointList,
shaderSet,
new[] { particleStorageLayout, screenSizeLayout },
_gd.SwapchainFramebuffer.OutputDescription);
_graphicsPipeline = factory.CreateGraphicsPipeline(ref particleDrawPipelineDesc);
_graphicsParticleResourceSet = factory.CreateResourceSet(new ResourceSetDescription(
particleStorageLayout,
_particleBuffer));
_screenSizeResourceSet = factory.CreateResourceSet(new ResourceSetDescription(
screenSizeLayout,
_screenSizeBuffer));
_cl = factory.CreateCommandList();
InitResources(factory);
}
private void CreateResources(ResourceFactory factory)
{
_cl = factory.CreateCommandList();
_cl.Begin();
_projectionBuffer = factory.CreateBuffer(new BufferDescription(64, BufferUsage.UniformBuffer));
_viewBuffer = factory.CreateBuffer(new BufferDescription(64, BufferUsage.UniformBuffer));
_worldBuffer = factory.CreateBuffer(new BufferDescription(64, BufferUsage.UniformBuffer));
VertexPositionTexture[] vertices = GetCubeVertices();
_vertexBuffer = factory.CreateBuffer(new BufferDescription((uint)(VertexPositionTexture.SizeInBytes * vertices.Length), BufferUsage.VertexBuffer));
_cl.UpdateBuffer(_vertexBuffer, 0, vertices);
ushort[] indices = GetCubeIndices();
_indexBuffer = factory.CreateBuffer(new BufferDescription(sizeof(ushort) * (uint)indices.Length, BufferUsage.IndexBuffer));
_cl.UpdateBuffer(_indexBuffer, 0, indices);
ImageSharpTexture stoneImage = new ImageSharpTexture(Path.Combine(AppContext.BaseDirectory, "Textures", "spnza_bricks_a_diff.png"));
_surfaceTexture = stoneImage.CreateDeviceTexture(_gd, factory);
_surfaceTextureView = factory.CreateTextureView(_surfaceTexture);
_cl.End();
_gd.ExecuteCommands(_cl);
_gd.WaitForIdle();
ShaderSetDescription shaderSet = new ShaderSetDescription(
new[]
{
new VertexLayoutDescription(
new VertexElementDescription("Position", VertexElementSemantic.Position, VertexElementFormat.Float3),
new VertexElementDescription("TexCoords", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float2))
},
new[]
{
new ShaderStageDescription(ShaderStages.Vertex, LoadShader(factory, "Cube", ShaderStages.Vertex), "VS"),
new ShaderStageDescription(ShaderStages.Fragment, LoadShader(factory, "Cube", ShaderStages.Fragment), "FS")
});
ResourceLayout projViewLayout = factory.CreateResourceLayout(
new ResourceLayoutDescription(
new ResourceLayoutElementDescription("Projection", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("View", ResourceKind.UniformBuffer, ShaderStages.Vertex)));
ResourceLayout worldTextureLayout = factory.CreateResourceLayout(
new ResourceLayoutDescription(
new ResourceLayoutElementDescription("World", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("SurfaceTexture", ResourceKind.TextureReadOnly, ShaderStages.Fragment),
new ResourceLayoutElementDescription("SurfaceSampler", ResourceKind.Sampler, ShaderStages.Fragment)));
_pipeline = factory.CreateGraphicsPipeline(new GraphicsPipelineDescription(
BlendStateDescription.SingleOverrideBlend,
DepthStencilStateDescription.LessEqual,
RasterizerStateDescription.Default,
PrimitiveTopology.TriangleList,
shaderSet,
new[] { projViewLayout, worldTextureLayout },
_gd.SwapchainFramebuffer.OutputDescription));
_projViewSet = factory.CreateResourceSet(new ResourceSetDescription(
projViewLayout,
_projectionBuffer,
_viewBuffer));
_worldTextureSet = factory.CreateResourceSet(new ResourceSetDescription(
worldTextureLayout,
_worldBuffer,
_surfaceTextureView,
_gd.Aniso4xSampler));
}
private unsafe void RenderImDrawData(DrawData *draw_data, GraphicsDevice gd, CommandList cl)
{
uint vertexOffsetInVertices = 0;
uint indexOffsetInElements = 0;
if (draw_data->CmdListsCount == 0)
{
return;
}
uint totalVBSize = (uint)(draw_data->TotalVtxCount * sizeof(DrawVert));
if (totalVBSize > _vertexBuffer.SizeInBytes)
{
_vertexBuffer.Dispose();
_vertexBuffer = gd.ResourceFactory.CreateBuffer(new BufferDescription((uint)(totalVBSize * 1.5f), BufferUsage.VertexBuffer | BufferUsage.Dynamic));
}
uint totalIBSize = (uint)(draw_data->TotalIdxCount * sizeof(ushort));
if (totalIBSize > _indexBuffer.SizeInBytes)
{
_indexBuffer.Dispose();
_indexBuffer = gd.ResourceFactory.CreateBuffer(new BufferDescription((uint)(totalIBSize * 1.5f), BufferUsage.IndexBuffer | BufferUsage.Dynamic));
}
MappedResource vbMap = _gd.Map(_vertexBuffer, MapMode.Write);
MappedResource ibMap = _gd.Map(_indexBuffer, MapMode.Write);
for (int i = 0; i < draw_data->CmdListsCount; i++)
{
NativeDrawList *cmd_list = draw_data->CmdLists[i];
Unsafe.CopyBlock(
(byte *)vbMap.Data.ToPointer() + vertexOffsetInVertices * sizeof(DrawVert),
cmd_list->VtxBuffer.Data,
(uint)(cmd_list->VtxBuffer.Size * sizeof(DrawVert)));
Unsafe.CopyBlock(
(byte *)ibMap.Data.ToPointer() + indexOffsetInElements * sizeof(ushort),
cmd_list->IdxBuffer.Data,
(uint)(cmd_list->IdxBuffer.Size * sizeof(ushort)));
vertexOffsetInVertices += (uint)cmd_list->VtxBuffer.Size;
indexOffsetInElements += (uint)cmd_list->IdxBuffer.Size;
}
_gd.Unmap(_vertexBuffer);
_gd.Unmap(_indexBuffer);
// Setup orthographic projection matrix into our constant buffer
{
var io = ImGui.GetIO();
Matrix4x4 mvp = Matrix4x4.CreateOrthographicOffCenter(
0f,
io.DisplaySize.X,
io.DisplaySize.Y,
0.0f,
-1.0f,
1.0f);
cl.UpdateBuffer(_projMatrixBuffer, 0, ref mvp);
}
cl.SetVertexBuffer(0, _vertexBuffer);
cl.SetIndexBuffer(_indexBuffer, IndexFormat.UInt16);
cl.SetPipeline(_pipeline);
cl.SetGraphicsResourceSet(0, _mainResourceSet);
ImGui.ScaleClipRects(draw_data, ImGui.GetIO().DisplayFramebufferScale);
// Render command lists
int vtx_offset = 0;
int idx_offset = 0;
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
NativeDrawList *cmd_list = draw_data->CmdLists[n];
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
{
DrawCmd *pcmd = &(((DrawCmd *)cmd_list->CmdBuffer.Data)[cmd_i]);
if (pcmd->UserCallback != IntPtr.Zero)
{
throw new NotImplementedException();
}
else
{
if (pcmd->TextureId != IntPtr.Zero)
{
if (pcmd->TextureId == _fontAtlasID)
{
cl.SetGraphicsResourceSet(1, _fontTextureResourceSet);
}
else
{
cl.SetGraphicsResourceSet(1, GetImageResourceSet(pcmd->TextureId));
}
}
cl.SetScissorRect(
0,
(uint)pcmd->ClipRect.X,
(uint)pcmd->ClipRect.Y,
(uint)pcmd->ClipRect.Z,
(uint)pcmd->ClipRect.W);
cl.DrawIndexed(pcmd->ElemCount, 1, (uint)idx_offset, vtx_offset, 0);
}
idx_offset += (int)pcmd->ElemCount;
}
vtx_offset += cmd_list->VtxBuffer.Size;
}
}
