// StgShqrpGraphic.cpp : 定义 DLL 的导出函数。
//


#include "GLenv/include/glad/glad.h"
#include "GLenv/include/GLFW/glfw3.h"
#include "framework.h"
#include <stdio.h>
#include "StgSharpGraphic.h"

extern char* infolog[512] = { 0 };

void printShaderCode(char* const* code)
{
    printf(*code);
}

SSGC_API void initGL(int majorVersion, int minorVersion)
{
    glfwInit();
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, majorVersion);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, minorVersion);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

#ifdef  __APPLE__
    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
#endif //  __APPLE__
}


SSGC_API int initGLAD(void)
{
    return gladLoadGLLoader((GLADloadproc)glfwGetProcAddress);
}

SSGC_API unsigned int loadShaderCode(char* const shaderCode, GLint shadertype)
{
    unsigned int shader = glCreateShader(shadertype);
    glShaderSource(shader, 1, &shaderCode, NULL);
    glCompileShader(shader);
    int success;
    glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
    if (!success)
    {
        glGetShaderInfoLog(shader, 512, NULL, infolog);
        infolog[511] = '\0';
        printf(infolog);
        return 0;
    }
    else
    {
        return shader;
    }
}

SSGC_API unsigned int linkShaderProgram(GLuint shaderProgram)
{
    glLinkProgram(shaderProgram);

    int success;
    glGetProgramiv(shaderProgram, GL_LINK_STATUS, &success);
    if (!success)
    {
        glGetProgramInfoLog(shaderProgram, 512, NULL, infolog);
        printf(infolog);
        return 0;
    }
    else
    {
        return shaderProgram;
    }

}

char* _cdecl readLog()
{
    return infolog[0];
}