将字符串分配给Char指针错误 [英] Assigning String to Char pointer error

问题描述

我遇到了一个问题，即将使用stringify转换的字符串分配给字符指针。似乎字符指针（char * particleVS）只占用字符串的前256个字符。我在64位平台上工作。同样的代码也适用于32位平台。我无法弄清楚为什么只有256字符只被分配在64位平台的char指针变量中，任何人都可以请帮助..提前感谢。



代码如下：

  #define STRINGIFY（A）#A 
  
  const   char  * particleVS = STRINGIFY（
 uniform  float  pointRadius;  //  世界空间中的磅值\ n  
 uniform  float  pointScale;  //  缩放以计算大小（以像素为单位）\\ \\ n  
制服vec4 eyePos; \ n 
  void  main（）\ n 
 { \ n 
 vec4 wpos = vec4（gl_Vertex.xyz， 1 。 0 ）; \ n 
 gl_Position = gl_ModelViewProjectionMatrix * wpos; \ n 
 
  //  计算窗口空间点大小\ n  
 vec4 eyeSpacePos = gl_ModelViewMatrix * wpos; \ n 
  float  dist = length（eyeSpacePos.xyz）; \ n 
 gl_PointSize = pointRadius *（pointScale / dist）; \ n 
 
 gl_TexCoord [ 0 ] = gl_MultiTexCoord0;  //   sprite texcoord \ n  
 gl_TexCoord [ 1 ] = eyeSpacePos; \ n 
 
 gl_FrontColor = gl_Color; \ n 
} \ n 
）; 

解决方案

你试过W2A和A2W转换

I am stucked in a problem assigning a string, converted by using stringify, to a character pointer. It seemed that the character pointer(char * particleVS ) is taking only first 256 character of the string. My working in 64bit platform. Also the same code works fine for 32bit platform. I couldn''t figure out why only 256 character is only being assigned in a char pointer variable in 64 bit platform could anyone please help.. Thank in advance.

code is given below

#define STRINGIFY(A) #A

const char *particleVS = STRINGIFY(
uniform float pointRadius;  // point size in world space    \n
uniform float pointScale;   // scale to calculate size in pixels \n
uniform vec4 eyePos;                                        \n
void main()                                                 \n
{                                                           \n
	vec4 wpos = vec4(gl_Vertex.xyz, 1.0);                   \n
    gl_Position = gl_ModelViewProjectionMatrix * wpos;      \n

    // calculate window-space point size                    \n
    vec4 eyeSpacePos = gl_ModelViewMatrix * wpos;           \n
    float dist = length(eyeSpacePos.xyz);                   \n
    gl_PointSize = pointRadius * (pointScale / dist);       \n

    gl_TexCoord[0] = gl_MultiTexCoord0; // sprite texcoord  \n
    gl_TexCoord[1] = eyeSpacePos;                           \n

    gl_FrontColor = gl_Color;                               \n
}                                                           \n
);

解决方案

Have you tried with W2A & A2W convertion

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