如何在Silverlight中将图像包裹在圆柱体周围 [英] How wrap image around cylinder in Silverlight

问题描述

我正在尝试在Silverlight中将图像包裹在圆柱周围.我在Google上看了很多东西，但是什么也没找到.据我所知，可以使用像素着色器完成此操作，但不知道如何操作.
有可能吗?
谢谢.

I am trying wrap image around cylinder in silverlight. I looked a lot in Google but don't found anything. As I know it can be done with pixel shader, but don't know how.
Is it possible?
Thanks.

推荐答案

这不是完整的圆柱体，但是您会得到一个入门的想法/示例:

It's not a complete wrap onto cylinder, but you will get a starting idea/example:

(代码在GLSL中，而不在HLSL中，但是我认为转换起来并不难)

(code is in GLSL, not in HLSL, but i think it will be not hard to convert it)

uniform sampler2D tex;

void main()
{
 vec2 cen = vec2(0.5,gl_TexCoord[0].y)-gl_TexCoord[0].xy;
 cen = vec2(pow(cen.x,1.7),pow(cen.y,2.2));
 cen.y = 3.9*sin(1.8*gl_TexCoord[0].x-2.3);
 vec2 mcoord = 1.65*vec2(-0.22+gl_TexCoord[0].x,1.95+gl_TexCoord[0].y);
 gl_FragColor = texture2D(tex, mcoord+cen);
}

从这里

您将获得类似的信息

祝你好运

这篇关于如何在Silverlight中将图像包裹在圆柱体周围的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！