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WEBGL - 如何显示图像?
原标题:WEBGL - How to display an image?

i m 仅试图使用 WEBGL 在 x 和 y 坐标处的画布上显示图像, 但并不知道如何操作 。 我是否需要包含阴影器和所有的东西? 我见过显示图像的代码, 但是它们非常大 。 我不想使用一个框架 。 如果可能的话, 您可以评论并解释重要部分做什么 。 我将使用 WEBGL 进行基于 2 d 的瓷砖游戏 。

感谢您抽出时间

问题回答

是的, 您需要一个顶部和碎片遮光镜, 但是它们可以相对简单 。 我建议从 Mozilla 示例开始, 正如 Ido 所建议的那样, 在它运行后, 删除 3D 方面 。 特别是, 您不需要 uMV PMatrix 和 uPmatrix, 您的坐标数组可以是 2D 。 对于顶部遮光仪, 这意味着 :

attribute vec3 aVertexPosition;  
attribute vec2 aTextureCoord;  

varying highp vec2 vTextureCoord;  

void main(void) {  
  gl_Position = vec4(aVertexPosition, 0.0, 1.0);  
  vTextureCoord = aTextureCoord;  
}  




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