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MoonWorksGraphicsTests
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DrawIndirectExample

refresh2
cosmonaut 2024-06-06 13:09:45 -07:00
parent 17aac39403
commit 83bdf69e64
4 changed files with 108 additions and 80 deletions
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105
Examples/DrawIndirectExample.cs Normal file
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@ -0,0 +1,105 @@
using MoonWorks;
using MoonWorks.Graphics;
using MoonWorks.Input;
using MoonWorks.Math.Float;
using System.Runtime.InteropServices;
namespace MoonWorksGraphicsTests;
class DrawIndirectExample : Example
{
private GraphicsPipeline GraphicsPipeline;
private GpuBuffer VertexBuffer;
private GpuBuffer DrawBuffer;
public override void Init(Window window, GraphicsDevice graphicsDevice, Inputs inputs)
{
Window = window;
GraphicsDevice = graphicsDevice;
Window.SetTitle("DrawIndirect");
// Load the shaders
Shader vertShader = new Shader(
GraphicsDevice,
TestUtils.GetShaderPath("PositionColor.vert"),
"main",
ShaderStage.Vertex,
ShaderFormat.SPIRV
);
Shader fragShader = new Shader(
GraphicsDevice,
TestUtils.GetShaderPath("SolidColor.frag"),
"main",
ShaderStage.Fragment,
ShaderFormat.SPIRV
);
// Create the graphics pipeline
GraphicsPipelineCreateInfo pipelineCreateInfo = TestUtils.GetStandardGraphicsPipelineCreateInfo(
Window.SwapchainFormat,
vertShader,
fragShader
);
pipelineCreateInfo.VertexInputState = VertexInputState.CreateSingleBinding<PositionColorVertex>();
GraphicsPipeline = new GraphicsPipeline(GraphicsDevice, pipelineCreateInfo);
// Create and populate the vertex buffer
var resourceUploader = new ResourceUploader(GraphicsDevice);
VertexBuffer = resourceUploader.CreateBuffer(
[
new PositionColorVertex(new Vector3(-0.5f, 1, 0), Color.Blue),
new PositionColorVertex(new Vector3( -1f, -1, 0), Color.Green),
new PositionColorVertex(new Vector3( 0f, -1, 0), Color.Red),
new PositionColorVertex(new Vector3(0.5f, 1, 0), Color.Blue),
new PositionColorVertex(new Vector3( 1f, -1, 0), Color.Green),
new PositionColorVertex(new Vector3( 0f, -1, 0), Color.Red),
],
BufferUsageFlags.Vertex
);
DrawBuffer = resourceUploader.CreateBuffer(
[
new IndirectDrawCommand(3, 1, 3, 0),
new IndirectDrawCommand(3, 1, 0, 0),
],
BufferUsageFlags.Indirect
);
resourceUploader.Upload();
resourceUploader.Dispose();
}
public override void Update(System.TimeSpan delta) { }
public override void Draw(double alpha)
{
CommandBuffer cmdbuf = GraphicsDevice.AcquireCommandBuffer();
Texture swapchainTexture = cmdbuf.AcquireSwapchainTexture(Window);
if (swapchainTexture != null)
{
var renderPass = cmdbuf.BeginRenderPass(
new ColorAttachmentInfo(
swapchainTexture,
false,
Color.Black
)
);
renderPass.BindGraphicsPipeline(GraphicsPipeline);
renderPass.BindVertexBuffer(VertexBuffer);
renderPass.DrawPrimitivesIndirect(DrawBuffer, 0, 2, (uint) Marshal.SizeOf<IndirectDrawCommand>());
cmdbuf.EndRenderPass(renderPass);
}
GraphicsDevice.Submit(cmdbuf);
}
public override void Destroy()
{
GraphicsPipeline.Dispose();
VertexBuffer.Dispose();
DrawBuffer.Dispose();
}
}

79
Examples/DrawIndirectGame.cs
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@ -1,79 +0,0 @@
using MoonWorks.Graphics;
using MoonWorks.Math.Float;
using System.Runtime.InteropServices;
namespace MoonWorks.Test
{
class DrawIndirectGame : Game
{
private GraphicsPipeline graphicsPipeline;
private GpuBuffer vertexBuffer;
private GpuBuffer drawBuffer;
public DrawIndirectGame() : base(TestUtils.GetStandardWindowCreateInfo(), TestUtils.GetStandardFrameLimiterSettings(), TestUtils.PreferredBackends, 60, true)
{
// Load the shaders
ShaderModule vertShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("PositionColor.vert"));
ShaderModule fragShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("SolidColor.frag"));
// Create the graphics pipeline
GraphicsPipelineCreateInfo pipelineCreateInfo = TestUtils.GetStandardGraphicsPipelineCreateInfo(
MainWindow.SwapchainFormat,
vertShaderModule,
fragShaderModule
);
pipelineCreateInfo.VertexInputState = VertexInputState.CreateSingleBinding<PositionColorVertex>();
graphicsPipeline = new GraphicsPipeline(GraphicsDevice, pipelineCreateInfo);
// Create and populate the vertex buffer
var resourceUploader = new ResourceUploader(GraphicsDevice);
vertexBuffer = resourceUploader.CreateBuffer(
[
new PositionColorVertex(new Vector3(-0.5f, -1, 0), Color.Blue),
new PositionColorVertex(new Vector3(-1f, 1, 0), Color.Green),
new PositionColorVertex(new Vector3(0f, 1, 0), Color.Red),
new PositionColorVertex(new Vector3(.5f, -1, 0), Color.Blue),
new PositionColorVertex(new Vector3(1f, 1, 0), Color.Green),
new PositionColorVertex(new Vector3(0f, 1, 0), Color.Red),
],
BufferUsageFlags.Vertex
);
drawBuffer = resourceUploader.CreateBuffer(
[
new IndirectDrawCommand(3, 1, 3, 0),
new IndirectDrawCommand(3, 1, 0, 0),
],
BufferUsageFlags.Indirect
);
resourceUploader.Upload();
resourceUploader.Dispose();
}
protected override void Update(System.TimeSpan delta) { }
protected override void Draw(double alpha)
{
CommandBuffer cmdbuf = GraphicsDevice.AcquireCommandBuffer();
Texture? backbuffer = cmdbuf.AcquireSwapchainTexture(MainWindow);
if (backbuffer != null)
{
cmdbuf.BeginRenderPass(new ColorAttachmentInfo(backbuffer, WriteOptions.Cycle, Color.CornflowerBlue));
cmdbuf.BindGraphicsPipeline(graphicsPipeline);
cmdbuf.BindVertexBuffers(new BufferBinding(vertexBuffer, 0));
cmdbuf.DrawPrimitivesIndirect(drawBuffer, 0, 2, (uint) Marshal.SizeOf<IndirectDrawCommand>());
cmdbuf.EndRenderPass();
}
GraphicsDevice.Submit(cmdbuf);
}
public static void Main(string[] args)
{
DrawIndirectGame game = new DrawIndirectGame();
game.Run();
}
}
}

1
MoonWorksGraphicsTests.csproj
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@ -35,6 +35,7 @@
<Compile Include="Examples\CubeExample.cs" />
<Compile Include="Examples\CullFaceExample.cs" />
<Compile Include="Examples\DepthMSAAExample.cs" />
<Compile Include="Examples\DrawIndirectExample.cs" />
</ItemGroup>
<Import Project=".\CopyMoonlibs.targets" />

3
Program.cs
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@ -18,7 +18,8 @@ class Program : Game
new CopyTextureExample(),
new CubeExample(),
new CullFaceExample(),
new DepthMSAAExample()
new DepthMSAAExample(),
new DrawIndirectExample()
];
int ExampleIndex = 0;