OpenGL片段着色器不兼容[关闭]

Question

为什么这段代码不能在运行 OpenGL 4.5 上 RTX 2080 TI 规格的 GPU 的计算机上运行，​​而在运行非 Nvidia GPU 的计算机上运行？

我尝试隔离代码段。下面的代码会产生错误：

“编译片段着色器失败” “统一变量任务，调制，uTileSize 不存在”。

（我有辅助函数来检查着色器问题）。

#version 450 core

in vec2 pos;
in vec3 color;
in vec2 uv;

out vec4 finalColor;

const vec3 C0 = vec3(1, 0, 1);
const vec3 C1 = vec3(0, 0.68, 0.94);
uniform int task;
uniform bool modulate;
uniform float uTileSize;

uniform sampler2D text;

void main(){
    if(task == 0){
        finalColor = vec4(color, 1.0);
    } else if(task == 1){
        float tilePosX = floor(gl_FragCoord.x / 32);
        float tilePosY = floor(gl_FragCoord.y / 32);
        
        if(mod(tilePosX + tilePosY, 2)){
            finalColor = modulate ? vec4(C0 * color, 1.0) : vec4(C0, 1.0);
        } else {
            finalColor = modulate ? vec4(C1 * color, 1.0) : vec4(C1, 1.0);
        }
    } else if(task == 2){
        float tilePosX = floor(gl_FragCoord.x / uTileSize);
        float tilePosY = floor(gl_FragCoord.y / uTileSize);
        
        if(mod(tilePosX + tilePosY, 2)){
            finalColor = modulate ? vec4(C0 * color, 1.0) : vec4(C0, 1.0);
        } else {
            finalColor = modulate ? vec4(C1 * color, 1.0) : vec4(C1, 1.0);
        }
    } else if(task == 3){
        vec4 texture_color = texture(text, uv);
        finalColor = modulate ? texture_color * vec4(color, 1.0) : texture_color;
    } else if(task == 4){
        vec4 texture_color = texture(text, uv * 4);
        finalColor = modulate ? texture_color * vec4(color, 1.0) : texture_color;
    } else if(task == 5){
        vec4 texture_color = texture(text, uv * 4);
        finalColor = modulate ? texture_color * vec4(color, 1.0) : texture_color;
    } else if(task == 6){
        vec4 texture_color = texture(text, uv * 4);
        finalColor = modulate ? texture_color * vec4(color, 1.0) : texture_color;
    }
}

以下代码检查变量是否存在：

void GLSLShader::SetUniform(GLchar const *name, GLboolean val) {
  GLint loc = glGetUniformLocation(pgm_handle, name);
  if (loc >= 0) {
    glUniform1i(loc, val);
  }
  else {
    std::cout << "Uniform variable " << name << " doesn't exist" << std::endl;
  }
}

void GLSLShader::SetUniform(GLchar const *name, GLint val) {
  GLint loc = glGetUniformLocation(pgm_handle, name);
  if (loc >= 0) {
    glUniform1i(loc, val);
  }
  else {
    std::cout << "Uniform variable " << name << " doesn't exist" << std::endl;
  }
}

void GLSLShader::SetUniform(GLchar const *name, GLfloat val) {
  GLint loc = glGetUniformLocation(pgm_handle, name);
  if (loc >= 0) {
    glUniform1f(loc, val);
  }
  else {
    std::cout << "Uniform variable " << name << " doesn't exist" << std::endl;
  }
}

void GLSLShader::SetUniform(GLchar const *name, GLfloat x, GLfloat y) {
  GLint loc = glGetUniformLocation(pgm_handle, name);
  if (loc >= 0) {
    glUniform2f(loc, x, y);
  } else {
    std::cout << "Uniform variable " << name << " doesn't exist" << std::endl;
  }
}

void GLSLShader::SetUniform(GLchar const *name, GLfloat x, GLfloat y, GLfloat z) {
  GLint loc = glGetUniformLocation(pgm_handle, name);
  if (loc >= 0) {
    glUniform3f(loc, x, y, z);
  }
  else {
    std::cout << "Uniform variable " << name << " doesn't exist" << std::endl;
  }
}

void 
GLSLShader::SetUniform(GLchar const *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w) {
  GLint loc = glGetUniformLocation(pgm_handle, name);
  if (loc >= 0) {
    glUniform4f(loc, x, y, z, w);
  } else {
    std::cout << "Uniform variable " << name << " doesn't exist" << std::endl;
  }
}

void GLSLShader::SetUniform(GLchar const *name, glm::vec2 &val) {
  GLint loc = glGetUniformLocation(pgm_handle, name);
  if (loc >= 0) {
    glUniform2f(loc, val.x, val.y);
  }
  else {
    std::cout << "Uniform variable " << name << " doesn't exist" << std::endl;
  }
}

void GLSLShader::SetUniform(GLchar const *name, glm::vec3 &val) {
  GLint loc = glGetUniformLocation(pgm_handle, name);
  if (loc >= 0) {
    glUniform3f(loc, val.x, val.y, val.z);
  }
  else {
    std::cout << "Uniform variable " << name << " doesn't exist" << std::endl;
  }
}

void GLSLShader::SetUniform(GLchar const *name, glm::vec4 &val) {
  GLint loc = glGetUniformLocation(pgm_handle, name);
  if (loc >= 0) {
    glUniform4f(loc, val.x, val.y, val.z, val.w);
  }
  else {
    std::cout << "Uniform variable " << name << " doesn't exist" << std::endl;
  }
}

void GLSLShader::SetUniform(GLchar const *name, glm::mat3 &val) {
  GLint loc = glGetUniformLocation(pgm_handle, name);
  if (loc >= 0) {
    glUniformMatrix3fv(loc, 1, GL_FALSE, &val[0][0]);
  }
  else {
    std::cout << "Uniform variable " << name << " doesn't exist" << std::endl;
  }
}

void GLSLShader::SetUniform(GLchar const *name, glm::mat4 &val) {
  GLint loc = glGetUniformLocation(pgm_handle, name);
  if (loc >= 0) {
    glUniformMatrix4fv(loc, 1, GL_FALSE, &val[0][0]);
  }
  else {
    std::cout << "Uniform variable " << name << " doesn't exist" << std::endl;
  }
}

这就是我设置制服的方式：

int task_number = 0;
bool modulate = false;
float tile_size = 16;

shdrpgms[shd_ref].Use();
shdrpgms[shd_ref].SetUniform("task", task_number);
shdrpgms[shd_ref].SetUniform("modulate", modulate);
shdrpgms[shd_ref].SetUniform("uTileSize", tile_size);

有什么提示可以让我调查吗？

Answer 1

我听了上面cmets中关于检查glGetShaderInfoLog返回的字符串的Yun的建议（profile：https://stackoverflow.com/users/16632281/yun），发现问题出在类型转换上

mod(tilePosX + tilePosY, 2) 在第 24 行和第 33 行转换为 if 条件内的布尔值。我通过将其更改为 if (mod(tilePosX + tilePosY, 2) > 0) 解决了这个问题，此后没有任何投诉。