DrawUserPrimitives抱怨顶点着色器缺少 Color0

发布于 2024-12-13 01:01:42 字数 838 浏览 0 评论 0原文

首先，我对 XNA 以及 GPU 的工作方式以及它如何与 XNA（或 DirectX）API 协作感到陌生。

我有一个使用 SpriteBatch 绘制的多边形。我正在对多边形进行三角测量，并创建一个 VertexPositionTexture 数组来保存顶点。我设置了顶点（为了简单起见，将纹理偏移向量设置为零），并尝试绘制图元，但出现此错误：

当前顶点声明不包括当前顶点所需的所有元素着色器。 Color0 丢失。

这是我的代码，我已经仔细检查了三角测量的矢量，它们很好：

        VertexPositionTexture[] vertices = new VertexPositionTexture[triangulationResult.Count * 3];
        int ctr = 0;
        foreach (var item in triangulationResult)
        {
            foreach (var point in item.Vertices)
            {
                vertices[ctr++] = new VertexPositionTexture(new Vector3(point.X, point.Y, 0), Vector2.Zero);
            }
        }

        sb.GraphicsDevice.DrawUserPrimitives<VertexPositionTexture>(PrimitiveType.TriangleList, vertices, 0, triangulationResult.Count);

我在这里可能做错了什么？

原文

First of all, I am new to XNA and the way GPU works and how it cooperates with the XNA (or DirectX) API.

I have a polygon to draw using the SpriteBatch. I'm triangulating the polygon, and creating a VertexPositionTexture array to hold the vertices. I set the vertices (and just for simplicity, set the texture offset vector to zero), and try to draw the primitives, but I get this error:

The current vertex declaration does not include all the elements required by the current vertex shader. Color0 is missing.

Here is my code, I've double checked my vectors from triangulation, they are fine:

        VertexPositionTexture[] vertices = new VertexPositionTexture[triangulationResult.Count * 3];
        int ctr = 0;
        foreach (var item in triangulationResult)
        {
            foreach (var point in item.Vertices)
            {
                vertices[ctr++] = new VertexPositionTexture(new Vector3(point.X, point.Y, 0), Vector2.Zero);
            }
        }

        sb.GraphicsDevice.DrawUserPrimitives<VertexPositionTexture>(PrimitiveType.TriangleList, vertices, 0, triangulationResult.Count);

What am I possibly doing wrong here?

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烂柯人 2024-12-20 01:01:42

您的着色器需要顶点流中的颜色......因此您必须使用 VertexPositionColorTexture 或更改您的着色器。

看来您没有使用任何着色器。如果活动着色器是与 spritebatch 一起使用的着色器，您将无法正确绘制它。

    VertexPositionColorTexture[] vertices = new VertexPositionColorTexture[triangulationResult.Count * 3];
    int ctr = 0;
    foreach (var item in triangulationResult)
    {
        foreach (var point in item.Vertices)
        {
            vertices[ctr++] = new VertexPositionColorTexture(new Vector3(point.X, point.Y, 0), Color.White, Vector2.Zero);
        }
    }

    sb.GraphicsDevice.DrawUserPrimitives<VertexPositionColorTexture>(PrimitiveType.TriangleList, vertices, 0, triangulationResult.Count);

Your shader is expecting a Color in the vertex stream.... so you have to use VertexPositionColorTexture or change your shader.

It seems that you are not using any shader. If the active shader is the one used with spritebatch you won't be able to draw it right.

    VertexPositionColorTexture[] vertices = new VertexPositionColorTexture[triangulationResult.Count * 3];
    int ctr = 0;
    foreach (var item in triangulationResult)
    {
        foreach (var point in item.Vertices)
        {
            vertices[ctr++] = new VertexPositionColorTexture(new Vector3(point.X, point.Y, 0), Color.White, Vector2.Zero);
        }
    }

    sb.GraphicsDevice.DrawUserPrimitives<VertexPositionColorTexture>(PrimitiveType.TriangleList, vertices, 0, triangulationResult.Count);

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