MoonWorksGraphicsTests/RenderTextureMipmaps/RenderTextureMipmapsGame.cs

188 lines
5.7 KiB
C#

using MoonWorks.Graphics;
using MoonWorks.Math.Float;
namespace MoonWorks.Test
{
class RenderTextureMipmapsGame : Game
{
private GraphicsPipeline pipeline;
private GpuBuffer vertexBuffer;
private GpuBuffer indexBuffer;
private Texture texture;
private Sampler[] samplers = new Sampler[5];
private float scale = 0.5f;
private int currentSamplerIndex = 0;
private Color[] colors = new Color[]
{
Color.Red,
Color.Green,
Color.Blue,
Color.Yellow,
};
private string GetSamplerString(int index)
{
switch (index)
{
case 0:
return "PointClamp";
case 1:
return "LinearClamp";
case 2:
return "PointClamp with Mip LOD Bias = 0.25";
case 3:
return "PointClamp with Min LOD = 1";
case 4:
return "PointClamp with Max LOD = 1";
default:
throw new System.Exception("Unknown sampler!");
}
}
public RenderTextureMipmapsGame() : base(TestUtils.GetStandardWindowCreateInfo(), TestUtils.GetStandardFrameLimiterSettings(), TestUtils.PreferredBackends, 60, true)
{
Logger.LogInfo("Press Left and Right to shrink/expand the scale of the quad");
Logger.LogInfo("Press Down to cycle through sampler states");
Logger.LogInfo(GetSamplerString(currentSamplerIndex));
// Load the shaders
ShaderModule vertShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("TexturedQuadWithMatrix.vert"));
ShaderModule fragShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("TexturedQuad.frag"));
// Create the graphics pipeline
GraphicsPipelineCreateInfo pipelineCreateInfo = TestUtils.GetStandardGraphicsPipelineCreateInfo(
MainWindow.SwapchainFormat,
vertShaderModule,
fragShaderModule
);
pipelineCreateInfo.VertexInputState = VertexInputState.CreateSingleBinding<PositionTextureVertex>();
pipelineCreateInfo.VertexShaderInfo = GraphicsShaderInfo.Create<TransformVertexUniform>(vertShaderModule, "main", 0);
pipelineCreateInfo.FragmentShaderInfo.SamplerBindingCount = 1;
pipeline = new GraphicsPipeline(GraphicsDevice, pipelineCreateInfo);
// Create samplers
SamplerCreateInfo samplerCreateInfo = SamplerCreateInfo.PointClamp;
samplers[0] = new Sampler(GraphicsDevice, samplerCreateInfo);
samplerCreateInfo = SamplerCreateInfo.LinearClamp;
samplers[1] = new Sampler(GraphicsDevice, samplerCreateInfo);
samplerCreateInfo = SamplerCreateInfo.PointClamp;
samplerCreateInfo.MipLodBias = 0.25f;
samplers[2] = new Sampler(GraphicsDevice, samplerCreateInfo);
samplerCreateInfo = SamplerCreateInfo.PointClamp;
samplerCreateInfo.MinLod = 1;
samplers[3] = new Sampler(GraphicsDevice, samplerCreateInfo);
samplerCreateInfo = SamplerCreateInfo.PointClamp;
samplerCreateInfo.MaxLod = 1;
samplers[4] = new Sampler(GraphicsDevice, samplerCreateInfo);
// Create and populate the GPU resources
var resourceUploader = new ResourceUploader(GraphicsDevice);
vertexBuffer = resourceUploader.CreateBuffer(
[
new PositionTextureVertex(new Vector3(-1, -1, 0), new Vector2(0, 0)),
new PositionTextureVertex(new Vector3(1, -1, 0), new Vector2(1, 0)),
new PositionTextureVertex(new Vector3(1, 1, 0), new Vector2(1, 1)),
new PositionTextureVertex(new Vector3(-1, 1, 0), new Vector2(0, 1)),
],
BufferUsageFlags.Vertex
);
indexBuffer = resourceUploader.CreateBuffer<ushort>(
[
0, 1, 2,
0, 2, 3,
],
BufferUsageFlags.Index
);
resourceUploader.Upload();
resourceUploader.Dispose();
texture = Texture.CreateTexture2D(
GraphicsDevice,
MainWindow.Width,
MainWindow.Height,
TextureFormat.R8G8B8A8,
TextureUsageFlags.ColorTarget | TextureUsageFlags.Sampler,
4
);
CommandBuffer cmdbuf = GraphicsDevice.AcquireCommandBuffer();
// Clear each mip level to a different color
for (uint i = 0; i < texture.LevelCount; i += 1)
{
ColorAttachmentInfo attachmentInfo = new ColorAttachmentInfo
{
TextureSlice = new TextureSlice
{
Texture = texture,
Layer = 0,
MipLevel = i
},
ClearColor = colors[i],
LoadOp = LoadOp.Clear,
StoreOp = StoreOp.Store,
WriteOption = WriteOptions.Safe
};
cmdbuf.BeginRenderPass(attachmentInfo);
cmdbuf.EndRenderPass();
}
GraphicsDevice.Submit(cmdbuf);
}
protected override void Update(System.TimeSpan delta)
{
if (TestUtils.CheckButtonDown(Inputs, TestUtils.ButtonType.Left))
{
scale = System.MathF.Max(0.01f, scale - 0.01f);
}
if (TestUtils.CheckButtonDown(Inputs, TestUtils.ButtonType.Right))
{
scale = System.MathF.Min(1f, scale + 0.01f);
}
if (TestUtils.CheckButtonPressed(Inputs, TestUtils.ButtonType.Bottom))
{
currentSamplerIndex = (currentSamplerIndex + 1) % samplers.Length;
Logger.LogInfo(GetSamplerString(currentSamplerIndex));
}
}
protected override void Draw(double alpha)
{
TransformVertexUniform vertUniforms = new TransformVertexUniform(Matrix4x4.CreateScale(scale, scale, 1));
CommandBuffer cmdbuf = GraphicsDevice.AcquireCommandBuffer();
Texture? backbuffer = cmdbuf.AcquireSwapchainTexture(MainWindow);
if (backbuffer != null)
{
cmdbuf.BeginRenderPass(new ColorAttachmentInfo(backbuffer, WriteOptions.Cycle, Color.Black));
cmdbuf.BindGraphicsPipeline(pipeline);
cmdbuf.BindVertexBuffers(vertexBuffer);
cmdbuf.BindIndexBuffer(indexBuffer, IndexElementSize.Sixteen);
cmdbuf.BindFragmentSamplers(new TextureSamplerBinding(texture, samplers[currentSamplerIndex]));
cmdbuf.PushVertexShaderUniforms(vertUniforms);
cmdbuf.DrawIndexedPrimitives(0, 0, 2);
cmdbuf.EndRenderPass();
}
GraphicsDevice.Submit(cmdbuf);
}
public static void Main(string[] args)
{
RenderTextureMipmapsGame game = new RenderTextureMipmapsGame();
game.Run();
}
}
}