Add VertexSampler test

MoonWorks.Test.Common/Content/Shaders/Source/PositionSamplerVert.vert

@@ -0,0 +1,14 @@
+#version 450
+
+layout (location = 0) in vec3 Position;
+layout (location = 1) in vec2 TexCoord;
+
+layout (location = 0) out vec4 outColor;
+
+layout(binding = 0, set = 0) uniform sampler2D Sampler;
+
+void main()
+{
+	outColor = texture(Sampler, TexCoord);
+	gl_Position = vec4(Position, 1);
+}

MoonWorksGraphicsTests.sln

@@ -43,6 +43,8 @@ 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}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x64 = Debug|x64
@@ -129,6 +131,10 @@ Global
 		{5CDA8D41-F96C-4DE7-AD53-5A76C4C0CC31}.Debug|x64.Build.0 = Debug|x64
 		{5CDA8D41-F96C-4DE7-AD53-5A76C4C0CC31}.Release|x64.ActiveCfg = Release|x64
 		{5CDA8D41-F96C-4DE7-AD53-5A76C4C0CC31}.Release|x64.Build.0 = Release|x64
+		{C525B6DE-3003-45D5-BB83-89679B108C08}.Debug|x64.ActiveCfg = Debug|x64
+		{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
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

README.md

@@ -71,3 +71,7 @@ Plays a sample Ogg Theora video file. Tests YUV textures and video rendering.
 **Texture3D**
 
 Displays 2D slices of a 3D texture. Tests creating and drawing 3D textures.
+
+**VertexSampler**
+
+Displays a triangle whose colors are driven by sampling a texture in the vertex shader.

VertexSampler/VertexSampler.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>

VertexSampler/VertexSamplerGame.cs

@@ -0,0 +1,82 @@
+using MoonWorks;
+using MoonWorks.Graphics;
+using MoonWorks.Math.Float;
+
+namespace MoonWorks.Test
+{
+    class VertexSamplerGame : Game
+    {
+        private GraphicsPipeline pipeline;
+        private Buffer vertexBuffer;
+        private Texture texture;
+        private Sampler sampler;
+
+        public VertexSamplerGame() : base(TestUtils.GetStandardWindowCreateInfo(), TestUtils.GetStandardFrameLimiterSettings(), 60, true)
+        {
+            // Load the shaders
+            ShaderModule vertShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("PositionSamplerVert"));
+            ShaderModule fragShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("SolidColor"));
+
+            // Create the graphics pipeline
+            GraphicsPipelineCreateInfo pipelineCreateInfo = TestUtils.GetStandardGraphicsPipelineCreateInfo(
+                MainWindow.SwapchainFormat,
+                vertShaderModule,
+                fragShaderModule
+            );
+            pipelineCreateInfo.VertexInputState = VertexInputState.CreateSingleBinding<PositionTextureVertex>();
+            pipelineCreateInfo.VertexShaderInfo.SamplerBindingCount = 1;
+            pipeline = new GraphicsPipeline(GraphicsDevice, pipelineCreateInfo);
+
+            // Create and populate the GPU resources
+            vertexBuffer = Buffer.Create<PositionTextureVertex>(GraphicsDevice, BufferUsageFlags.Vertex, 3);
+            texture = new Texture(GraphicsDevice, new TextureCreateInfo
+            {
+                Width = 3,
+                Height = 1,
+                Depth = 1,
+                Format = TextureFormat.R8G8B8A8,
+                IsCube = false,
+                LevelCount = 1,
+                UsageFlags = TextureUsageFlags.Sampler
+            });
+            sampler = new Sampler(GraphicsDevice, SamplerCreateInfo.PointClamp);
+
+            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(0.334f, 0)),
+                    new PositionTextureVertex(new Vector3(0, -1, 0), new Vector2(0.667f, 0)),
+                }
+            );
+            cmdbuf.SetTextureData(texture, new Color[] { Color.Yellow, Color.Indigo, Color.HotPink });
+            GraphicsDevice.Submit(cmdbuf);
+        }
+
+        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, Color.Black));
+                cmdbuf.BindGraphicsPipeline(pipeline);
+                cmdbuf.BindVertexBuffers(vertexBuffer);
+                cmdbuf.BindVertexSamplers(new TextureSamplerBinding(texture, sampler));
+                cmdbuf.DrawPrimitives(0, 1, 0, 0);
+                cmdbuf.EndRenderPass();
+            }
+            GraphicsDevice.Submit(cmdbuf);
+        }
+
+        public static void Main(string[] args)
+        {
+            VertexSamplerGame p = new VertexSamplerGame();
+            p.Run();
+        }
+    }
+}