Add RenderTexture3D test

MoonWorksGraphicsTests.sln

@@ -43,7 +43,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Texture3D", "Texture3D\Text
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "InstancingAndOffsets", "InstancingAndOffsets\InstancingAndOffsets.csproj", "{5CDA8D41-F96C-4DE7-AD53-5A76C4C0CC31}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VertexSampler", "VertexSampler\VertexSampler.csproj", "{C525B6DE-3003-45D5-BB83-89679B108C08}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "VertexSampler", "VertexSampler\VertexSampler.csproj", "{C525B6DE-3003-45D5-BB83-89679B108C08}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RenderTexture3D", "RenderTexture3D\RenderTexture3D.csproj", "{6D625A4C-8618-4DFC-A6AD-AA3BE3488D70}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -135,6 +137,10 @@ Global
 		{C525B6DE-3003-45D5-BB83-89679B108C08}.Debug|x64.Build.0 = Debug|x64
 		{C525B6DE-3003-45D5-BB83-89679B108C08}.Release|x64.ActiveCfg = Release|Any CPU
 		{C525B6DE-3003-45D5-BB83-89679B108C08}.Release|x64.Build.0 = Release|Any CPU
+		{6D625A4C-8618-4DFC-A6AD-AA3BE3488D70}.Debug|x64.ActiveCfg = Debug|x64
+		{6D625A4C-8618-4DFC-A6AD-AA3BE3488D70}.Debug|x64.Build.0 = Debug|x64
+		{6D625A4C-8618-4DFC-A6AD-AA3BE3488D70}.Release|x64.ActiveCfg = Release|Any CPU
+		{6D625A4C-8618-4DFC-A6AD-AA3BE3488D70}.Release|x64.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

README.md

@@ -72,6 +72,10 @@ Plays a sample Ogg Theora video file. Tests YUV textures and video rendering.
 
 Displays 2D slices of a 3D texture. Tests creating and drawing 3D textures.
 
+**RenderTexture3D**
+
+Fades through 2D slices of a 3D render texture. Tests binding and sampling 3D render textures.
+
 **VertexSampler**
 
 Displays a triangle whose colors are driven by sampling a texture in the vertex shader.

RenderTexture3D/RenderTexture3D.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+	<ItemGroup>
+		<ProjectReference Include="..\..\MoonWorks\MoonWorks.csproj" />
+		<ProjectReference Include="..\MoonWorks.Test.Common\MoonWorks.Test.Common.csproj" />
+	</ItemGroup>
+
+	<PropertyGroup>
+		<OutputType>Exe</OutputType>
+		<TargetFramework>net7.0</TargetFramework>
+		<Nullable>enable</Nullable>
+		<Platforms>x64</Platforms>
+	</PropertyGroup>
+
+	<Import Project="$(SolutionDir)NativeAOT_Console.targets" Condition="Exists('$(SolutionDir)NativeAOT_Console.targets')" />
+
+</Project>

RenderTexture3D/RenderTexture3DGame.cs

@@ -0,0 +1,137 @@
+using MoonWorks;
+using MoonWorks.Graphics;
+using MoonWorks.Math.Float;
+using RefreshCS;
+
+namespace MoonWorks.Test
+{
+    class RenderTexture3DGame : Game
+    {
+        private GraphicsPipeline pipeline;
+        private Buffer vertexBuffer;
+        private Buffer indexBuffer;
+        private Texture rt;
+        private Sampler sampler;
+
+        private float t;
+        private Color[] colors = new Color[]
+        {
+            Color.Red,
+            Color.Green,
+            Color.Blue,
+        };
+
+        struct FragUniform
+        {
+            public float Depth;
+
+            public FragUniform(float depth)
+            {
+                Depth = depth;
+            }
+        }
+
+        public RenderTexture3DGame() : base(TestUtils.GetStandardWindowCreateInfo(), TestUtils.GetStandardFrameLimiterSettings(), 60, true)
+        {
+            // Load the shaders
+            ShaderModule vertShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("TexturedQuadVert"));
+            ShaderModule fragShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("TexturedQuad3DFrag"));
+
+            // Create the graphics pipeline
+            GraphicsPipelineCreateInfo pipelineCreateInfo = TestUtils.GetStandardGraphicsPipelineCreateInfo(
+                MainWindow.SwapchainFormat,
+                vertShaderModule,
+                fragShaderModule
+            );
+            pipelineCreateInfo.VertexInputState = VertexInputState.CreateSingleBinding<PositionTextureVertex>();
+            pipelineCreateInfo.FragmentShaderInfo = GraphicsShaderInfo.Create<FragUniform>(fragShaderModule, "main", 1);
+            pipeline = new GraphicsPipeline(GraphicsDevice, pipelineCreateInfo);
+
+            // Create samplers
+            sampler = new Sampler(GraphicsDevice, SamplerCreateInfo.LinearWrap);
+
+            // Create and populate the GPU resources
+            vertexBuffer = Buffer.Create<PositionTextureVertex>(GraphicsDevice, BufferUsageFlags.Vertex, 4);
+            indexBuffer = Buffer.Create<ushort>(GraphicsDevice, BufferUsageFlags.Index, 6);
+            rt = new Texture(GraphicsDevice, new TextureCreateInfo
+            {
+                Width = 16,
+                Height = 16,
+                Depth = (uint) colors.Length,
+                Format = TextureFormat.R8G8B8A8,
+                IsCube = false,
+                LevelCount = 1,
+                UsageFlags = TextureUsageFlags.ColorTarget | TextureUsageFlags.Sampler
+            });
+
+            CommandBuffer cmdbuf = GraphicsDevice.AcquireCommandBuffer();
+            cmdbuf.SetBufferData(
+                vertexBuffer,
+                new PositionTextureVertex[]
+                {
+                    new PositionTextureVertex(new Vector3(-1, -1, 0), new Vector2(0, 0)),
+                    new PositionTextureVertex(new Vector3(1, -1, 0), new Vector2(4, 0)),
+                    new PositionTextureVertex(new Vector3(1, 1, 0), new Vector2(4, 4)),
+                    new PositionTextureVertex(new Vector3(-1, 1, 0), new Vector2(0, 4)),
+                }
+            );
+            cmdbuf.SetBufferData(
+                indexBuffer,
+                new ushort[]
+                {
+                    0, 1, 2,
+                    0, 2, 3,
+                }
+            );
+
+            // Clear each depth slice of the RT to a different color
+            for (uint i = 0; i < colors.Length; i += 1)
+            {
+                ColorAttachmentInfo attachmentInfo = new ColorAttachmentInfo
+                {
+                    Texture = rt,
+                    ClearColor = colors[i],
+                    Depth = i,
+                    Layer = 0,
+                    Level = 0,
+                    LoadOp = LoadOp.Clear,
+                    StoreOp = StoreOp.Store,
+                    SampleCount = SampleCount.One,
+                };
+                cmdbuf.BeginRenderPass(attachmentInfo);
+                cmdbuf.EndRenderPass();
+            }
+
+            GraphicsDevice.Submit(cmdbuf);
+        }
+
+        protected override void Update(System.TimeSpan delta) { }
+
+        protected override void Draw(double alpha)
+        {
+            t += 0.01f;
+            FragUniform fragUniform = new FragUniform(t);
+
+            CommandBuffer cmdbuf = GraphicsDevice.AcquireCommandBuffer();
+            Texture? backbuffer = cmdbuf.AcquireSwapchainTexture(MainWindow);
+            if (backbuffer != null)
+            {
+                cmdbuf.BeginRenderPass(new ColorAttachmentInfo(backbuffer, Color.Black));
+                cmdbuf.BindGraphicsPipeline(pipeline);
+                cmdbuf.BindVertexBuffers(vertexBuffer);
+                cmdbuf.BindIndexBuffer(indexBuffer, IndexElementSize.Sixteen);
+                cmdbuf.BindFragmentSamplers(new TextureSamplerBinding(rt, sampler));
+                uint fragParamOffset = cmdbuf.PushFragmentShaderUniforms(fragUniform);
+                cmdbuf.DrawIndexedPrimitives(0, 0, 2, 0, fragParamOffset);
+                cmdbuf.EndRenderPass();
+            }
+            GraphicsDevice.Submit(cmdbuf);
+        }
+
+        public static void Main(string[] args)
+        {
+            RenderTexture3DGame game = new RenderTexture3DGame();
+            game.Run();
+        }
+    }
+}