MoonWorksGraphicsTests/TextureMipmaps/TextureMipmapsGame.cs

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2023-01-23 04:42:19 +00:00
using MoonWorks;
using MoonWorks.Graphics;
using MoonWorks.Math.Float;
using RefreshCS;
namespace MoonWorks.Test
{
class TextureMipmapsGame : Game
{
private GraphicsPipeline pipeline;
private Buffer vertexBuffer;
private Buffer indexBuffer;
private Texture texture;
private Sampler sampler;
private float scale = 0.5f;
private struct VertexUniforms
{
public Matrix4x4 TransformMatrix;
public VertexUniforms(Matrix4x4 transformMatrix)
{
TransformMatrix = transformMatrix;
}
}
public TextureMipmapsGame() : base(TestUtils.GetStandardWindowCreateInfo(), TestUtils.GetStandardFrameLimiterSettings(), 60, true)
{
Logger.LogInfo("Press Left and Right to shrink/expand the scale of the quad");
// Load the shaders
ShaderModule vertShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("TexturedQuadVertWithMatrix"));
ShaderModule fragShaderModule = new ShaderModule(GraphicsDevice, TestUtils.GetShaderPath("TexturedQuadFrag"));
// Create the graphics pipeline
GraphicsPipelineCreateInfo pipelineCreateInfo = TestUtils.GetStandardGraphicsPipelineCreateInfo(
MainWindow.SwapchainFormat,
vertShaderModule,
fragShaderModule
);
pipelineCreateInfo.VertexInputState = VertexInputState.CreateSingleBinding<PositionTextureVertex>();
pipelineCreateInfo.VertexShaderInfo = GraphicsShaderInfo.Create<VertexUniforms>(vertShaderModule, "main", 0);
pipelineCreateInfo.FragmentShaderInfo.SamplerBindingCount = 1;
pipeline = new GraphicsPipeline(GraphicsDevice, pipelineCreateInfo);
// Create and populate the GPU resources
sampler = new Sampler(GraphicsDevice, SamplerCreateInfo.PointClamp);
vertexBuffer = Buffer.Create<PositionTextureVertex>(GraphicsDevice, BufferUsageFlags.Vertex, 4);
indexBuffer = Buffer.Create<ushort>(GraphicsDevice, BufferUsageFlags.Index, 6);
texture = Texture.CreateTexture2D(
GraphicsDevice,
256,
256,
TextureFormat.R8G8B8A8,
TextureUsageFlags.Sampler,
4
);
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(1, 0)),
new PositionTextureVertex(new Vector3(1, 1, 0), new Vector2(1, 1)),
new PositionTextureVertex(new Vector3(-1, 1, 0), new Vector2(0, 1)),
}
);
cmdbuf.SetBufferData(
indexBuffer,
new ushort[]
{
0, 1, 2,
0, 2, 3,
}
);
// Set the various mip levels
for (int i = 0; i < texture.LevelCount; i += 1)
{
int w = (int) texture.Width >> i;
int h = (int) texture.Height >> i;
TextureSlice slice = new TextureSlice(
texture,
new Rect(0, 0, w, h),
0,
0,
(uint) i
);
var pixels = Refresh.Refresh_Image_Load(
TestUtils.GetTexturePath($"mip{i}.png"),
out var width,
out var height,
out var channels
);
var byteCount = (uint)(width * height * channels);
cmdbuf.SetTextureData(slice, pixels, byteCount);
Refresh.Refresh_Image_Free(pixels);
}
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);
}
}
protected override void Draw(double alpha)
{
VertexUniforms vertUniforms = new VertexUniforms(Matrix4x4.CreateScale(scale, scale, 1));
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(texture, sampler));
uint vertParamOffset = cmdbuf.PushVertexShaderUniforms(vertUniforms);
cmdbuf.DrawIndexedPrimitives(0, 0, 2, vertParamOffset, 0);
cmdbuf.EndRenderPass();
}
GraphicsDevice.Submit(cmdbuf);
}
public static void Main(string[] args)
{
TextureMipmapsGame game = new TextureMipmapsGame();
game.Run();
}
}
}