c_cpp 设置GLSL制服

Posted 2021-05-14

#include <glad/glad.h>
#include <glm/glm.hpp>

// Get the location of a uniform with name and shader id.
glGetUniformLocation(GLuint id, char *name);

// Prototypes for setting uniforms.
glUniform1i(GLuint location, GLint value);                      
glUniform1f(GLuint location, GLfloat value);                  
glUniform2f(GLuint location, GLfloat x, GLfloat y);           
glUniform3f(GLuint location, GLfloat x, GLfloat y, GLfloat z); 
glUniform4f(GLuint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
glUniformMatrix4fv(GLuint location, 1, GL_FALSE, glm::value_ptr(matrix));

#include <glad/glad.h>

GLuint id; // Shader ID set somewhere else.

void setInteger(const GLchar *name, GLint value, GLboolean useShader)
{
    if (useShader)
        glUseProgram(id);
    glUniform1i(glGetUniformLocation(id, name), value);
}