diff --git a/CopyTexture/CopyTexture.csproj b/CopyTexture/CopyTexture.csproj
new file mode 100644
index 0000000..2868e63
--- /dev/null
+++ b/CopyTexture/CopyTexture.csproj
@@ -0,0 +1,17 @@
+
+
+
+
+
+
+
+
+ Exe
+ net7.0
+ enable
+ x64
+
+
+
+
+
diff --git a/CopyTexture/CopyTextureGame.cs b/CopyTexture/CopyTextureGame.cs
new file mode 100644
index 0000000..478f50c
--- /dev/null
+++ b/CopyTexture/CopyTextureGame.cs
@@ -0,0 +1,180 @@
+using MoonWorks;
+using MoonWorks.Graphics;
+using MoonWorks.Math.Float;
+
+namespace MoonWorks.Test
+{
+ class CopyTextureGame : Game
+ {
+ private GraphicsPipeline pipeline;
+ private Buffer vertexBuffer;
+ private Buffer indexBuffer;
+ private Texture originalTexture;
+ private Texture textureCopy;
+ private Texture textureSmallCopy;
+ private Sampler sampler;
+
+ public CopyTextureGame() : base(TestUtils.GetStandardWindowCreateInfo(), TestUtils.GetStandardFrameLimiterSettings(), 60, true)
+ {
+ // Load the shaders
+ ShaderModule vertShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("TexturedQuadVert.spv"));
+ ShaderModule fragShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("TexturedQuadFrag.spv"));
+
+ // Create the graphics pipeline
+ GraphicsPipelineCreateInfo pipelineCreateInfo = TestUtils.GetStandardGraphicsPipelineCreateInfo(
+ MainWindow.SwapchainFormat,
+ vertShaderModule,
+ fragShaderModule
+ );
+ pipelineCreateInfo.AttachmentInfo.ColorAttachmentDescriptions[0].BlendState = ColorAttachmentBlendState.AlphaBlend;
+ pipelineCreateInfo.VertexInputState = VertexInputState.CreateSingleBinding();
+ pipelineCreateInfo.FragmentShaderInfo.SamplerBindingCount = 1;
+ pipeline = new GraphicsPipeline(GraphicsDevice, pipelineCreateInfo);
+
+ // Create sampler
+ sampler = new Sampler(GraphicsDevice, SamplerCreateInfo.PointClamp);
+
+ // Create and populate the GPU resources
+ vertexBuffer = Buffer.Create(GraphicsDevice, BufferUsageFlags.Vertex, 12);
+ indexBuffer = Buffer.Create(GraphicsDevice, BufferUsageFlags.Index, 12);
+
+ CommandBuffer cmdbuf = GraphicsDevice.AcquireCommandBuffer();
+
+ cmdbuf.SetBufferData(
+ vertexBuffer,
+ new PositionTextureVertex[]
+ {
+ new PositionTextureVertex(new Vector3(-1f, 0f, 0), new Vector2(0, 0)),
+ new PositionTextureVertex(new Vector3( 0f, 0f, 0), new Vector2(1, 0)),
+ new PositionTextureVertex(new Vector3( 0f, 1f, 0), new Vector2(1, 1)),
+ new PositionTextureVertex(new Vector3(-1f, 1f, 0), new Vector2(0, 1)),
+
+ new PositionTextureVertex(new Vector3(0f, 0f, 0), new Vector2(0, 0)),
+ new PositionTextureVertex(new Vector3(1f, 0f, 0), new Vector2(1, 0)),
+ new PositionTextureVertex(new Vector3(1f, 1f, 0), new Vector2(1, 1)),
+ new PositionTextureVertex(new Vector3(0f, 1f, 0), new Vector2(0, 1)),
+
+ new PositionTextureVertex(new Vector3(-0.5f, -1f, 0), new Vector2(0, 0)),
+ new PositionTextureVertex(new Vector3( 0.5f, -1f, 0), new Vector2(1, 0)),
+ new PositionTextureVertex(new Vector3( 0.5f, 0f, 0), new Vector2(1, 1)),
+ new PositionTextureVertex(new Vector3(-0.5f, 0f, 0), new Vector2(0, 1))
+ }
+ );
+ cmdbuf.SetBufferData(
+ indexBuffer,
+ new ushort[]
+ {
+ 0, 1, 2,
+ 0, 2, 3,
+
+ // For testing index offsets
+ 8, 9, 10,
+ 8, 10, 11,
+ }
+ );
+
+ // Load the texture. Copy-pasted from Texture.LoadPNG,
+ // but with the texture bytes stored.
+ var pixels = RefreshCS.Refresh.Refresh_Image_Load(
+ TestUtils.GetTexturePath("ravioli.png"),
+ out var width,
+ out var height,
+ out var channels
+ );
+
+ var byteCount = (uint)(width * height * channels);
+
+ TextureCreateInfo textureCreateInfo;
+ textureCreateInfo.Width = (uint)width;
+ textureCreateInfo.Height = (uint)height;
+ textureCreateInfo.Depth = 1;
+ textureCreateInfo.Format = TextureFormat.R8G8B8A8;
+ textureCreateInfo.IsCube = false;
+ textureCreateInfo.LevelCount = 1;
+ textureCreateInfo.UsageFlags = TextureUsageFlags.Sampler;
+
+ originalTexture = new Texture(GraphicsDevice, textureCreateInfo);
+ cmdbuf.SetTextureData(originalTexture, pixels, byteCount);
+
+ byte[] textureBytes = new byte[byteCount];
+ System.Runtime.InteropServices.Marshal.Copy(pixels, textureBytes, 0, (int) byteCount);
+
+ RefreshCS.Refresh.Refresh_Image_Free(pixels);
+
+ // Create a 1:1 copy of the texture
+ textureCopy = new Texture(GraphicsDevice, textureCreateInfo);
+ cmdbuf.CopyTextureToTexture(
+ new TextureSlice(originalTexture),
+ new TextureSlice(textureCopy),
+ Filter.Linear
+ );
+
+ // Create a half-sized copy of this texture
+ textureCreateInfo.Width /= 2;
+ textureCreateInfo.Height /= 2;
+ textureSmallCopy = new Texture(GraphicsDevice, textureCreateInfo);
+ cmdbuf.CopyTextureToTexture(
+ new TextureSlice(originalTexture),
+ new TextureSlice(
+ textureSmallCopy,
+ new Rect(
+ (int) textureCreateInfo.Width,
+ (int) textureCreateInfo.Height
+ )
+ ),
+ Filter.Linear
+ );
+
+ // Copy the texture to a buffer
+ Buffer compareBuffer = Buffer.Create(GraphicsDevice, 0, (uint) textureBytes.Length);
+ cmdbuf.CopyTextureToBuffer(new TextureSlice(originalTexture), compareBuffer);
+
+ GraphicsDevice.Submit(cmdbuf);
+ GraphicsDevice.Wait();
+
+ // Compare the original bytes to the copied bytes.
+ // Doing a manual equality check per byte because I can't find a way to memcmp in C#.
+ byte[] copiedBytes = new byte[textureBytes.Length];
+ compareBuffer.GetData(copiedBytes, (uint) copiedBytes.Length);
+
+ for (int i = 0; i < copiedBytes.Length; i += 1)
+ {
+ if (textureBytes[i] != copiedBytes[i])
+ {
+ Logger.LogError("FAIL! Original texture bytes do not match bytes from CopyTextureToBuffer!");
+ return;
+ }
+ }
+ Logger.LogError("SUCCESS! Original texture bytes and the bytes from CopyTextureToBuffer match!");
+ }
+
+ 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.BindIndexBuffer(indexBuffer, IndexElementSize.Sixteen);
+ cmdbuf.BindFragmentSamplers(new TextureSamplerBinding(originalTexture, sampler));
+ cmdbuf.DrawIndexedPrimitives(0, 0, 2, 0, 0);
+ cmdbuf.BindFragmentSamplers(new TextureSamplerBinding(textureCopy, sampler));
+ cmdbuf.DrawIndexedPrimitives(4, 0, 2, 0, 0);
+ cmdbuf.BindFragmentSamplers(new TextureSamplerBinding(textureSmallCopy, sampler));
+ cmdbuf.DrawIndexedPrimitives(0, 6, 2, 0, 0);
+ cmdbuf.EndRenderPass();
+ }
+ GraphicsDevice.Submit(cmdbuf);
+ }
+
+ public static void Main(string[] args)
+ {
+ CopyTextureGame game = new CopyTextureGame();
+ game.Run();
+ }
+ }
+}
diff --git a/MoonWorksGraphicsTests.sln b/MoonWorksGraphicsTests.sln
index 18d6ad5..3dac47a 100644
--- a/MoonWorksGraphicsTests.sln
+++ b/MoonWorksGraphicsTests.sln
@@ -35,6 +35,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DrawIndirect", "DrawIndirec
EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CompressedTextures", "CompressedTextures\CompressedTextures.csproj", "{E90D236C-BD0F-4420-ADD0-867D21F4DCA5}"
EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CopyTexture", "CopyTexture\CopyTexture.csproj", "{CF25A5A2-A0BD-4C9B-BB07-19CCD97C1C4E}"
+EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|x64 = Debug|x64
@@ -105,6 +107,10 @@ Global
{E90D236C-BD0F-4420-ADD0-867D21F4DCA5}.Debug|x64.Build.0 = Debug|x64
{E90D236C-BD0F-4420-ADD0-867D21F4DCA5}.Release|x64.ActiveCfg = Release|Any CPU
{E90D236C-BD0F-4420-ADD0-867D21F4DCA5}.Release|x64.Build.0 = Release|Any CPU
+ {CF25A5A2-A0BD-4C9B-BB07-19CCD97C1C4E}.Debug|x64.ActiveCfg = Debug|x64
+ {CF25A5A2-A0BD-4C9B-BB07-19CCD97C1C4E}.Debug|x64.Build.0 = Debug|x64
+ {CF25A5A2-A0BD-4C9B-BB07-19CCD97C1C4E}.Release|x64.ActiveCfg = Release|Any CPU
+ {CF25A5A2-A0BD-4C9B-BB07-19CCD97C1C4E}.Release|x64.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
diff --git a/README.md b/README.md
index 80a9beb..b52b1e3 100644
--- a/README.md
+++ b/README.md
@@ -55,3 +55,7 @@ Draws two triangles via indirect commands. Tests DrawPrimitivesIndirect.
**CompressedTextures**
Loads a series of compressed textures, then displays them for viewing. Tests compressed texture loading.
+
+**CopyTexture**
+
+Loads an image, then makes three copies of the image. One is a 1:1 scale image, another is a half-sized image (to test linear/nearest blitting), and the final copy is to a buffer. The buffer bytes are then compared with the original texture bytes to verify the copy's correctness. Tests CopyTextureToTexture, CopyTextureToBuffer, vertex offsets, and index offsets.