GLSL:“对未声明的标识符'texture2D'的无效调用"；

问题描述

我在Mac上使用Swift和OpenGL 3.2.我也在使用XCode 6.1 Beta，所以我认为这是最可能的解释，因为在我看来这似乎没有道理.

I'm on a Mac, using Swift, and using OpenGL 3.2. I'm also using XCode 6.1 Beta so I suppose that's the most likely explanation, because it doesn't seem to me like this makes sense.

我找不到任何证据不支持此功能，但是此片段着色器在编译期间导致错误Invalid call of undeclared identifier 'texture2D':

I can't find any evidence that this shouldn't be supported, but this fragment shader is resulting in the error Invalid call of undeclared identifier 'texture2D' during compilation:

#version 150

uniform sampler2D usTexture;

in vec2 vTextureCoord;

out vec4 FragColor;

void main() {
  vec4 color = texture2D(usTexture, vTextureCoord);
  FragColor = color;
}

推荐答案

片段.在我发布问题之后，终于找到了答案. texture2D已替换为texture.

Cripes. Finally found the answer right after I posted the question. texture2D has been replaced by texture.

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