指向Compute Shader的输入结构的指针(Pointer into input struct of Compute Shader)

 我的计算着色器再次出现问题...我想将包含指针的结构传递给计算着色器。 这是我的结构示例： 
 
struct couleurStruct {
    float r;
    float g;
    float b;
    float a;
    float *x;
};
 
 这是我的SSBO初始化： 
 
couleurStruct *coul;
coul = (couleurStruct *)glMapBufferRange(GL_SHADER_STORAGE_BUFFER, 0, 1 * sizeof(couleurStruct), bufMask);
//coul->x = (float *)glMapBufferRange(GL_SHADER_STORAGE_BUFFER, 0, 1 * sizeof(float), bufMask);

coul->r = 0.0;
coul->g = 1.0;
coul->b = 0.0;
coul->a = 1.0;
coul->x[0] = 0.5;

glUnmapBuffer(GL_SHADER_STORAGE_BUFFER);

glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 4, structBuffer);
 
 我尝试了很多不同的初始化但没有成功...... 
 
 那么，有没有办法分配所需的所有内存（因为我知道我的指针所指向的每个数组中需要的内存）并将其传递给计算着色器？ 或者是否真的不可能将指针传递给计算着色器？ 
 
 感谢您的帮助！ 

Once more I have a problem with my compute shader... I would like to pass a structure containing a pointer into a compute shader. This is my structure example:
 
struct couleurStruct {
    float r;
    float g;
    float b;
    float a;
    float *x;
};
 
Here is my SSBO initialization :
 
couleurStruct *coul;
coul = (couleurStruct *)glMapBufferRange(GL_SHADER_STORAGE_BUFFER, 0, 1 * sizeof(couleurStruct), bufMask);
//coul->x = (float *)glMapBufferRange(GL_SHADER_STORAGE_BUFFER, 0, 1 * sizeof(float), bufMask);

coul->r = 0.0;
coul->g = 1.0;
coul->b = 0.0;
coul->a = 1.0;
coul->x[0] = 0.5;

glUnmapBuffer(GL_SHADER_STORAGE_BUFFER);

glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 4, structBuffer);
 
I tried a lot of different initializations but without success...
 
So, is there a way to allocate all the memory needed (because I know the memory I will need inside each of the arrays pointed by my pointers) and pass it to the compute shader? Or is it really impossible to pass a pointer to a compute shader?
 
Thank you for your help!

原文：https://stackoverflow.com/questions/42396805