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

#include "ssgc_framework.h"
#include "glad_gl.h"
#include <stdio.h>
#include "StgSharpC.h"

extern char* infolog[512] = { 0 };
GladGLContext* currentContext;
glfwContext* glfw;

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



SSCAPI void _cdecl 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 

}



SSCAPI unsigned int loadShaderCode(char* const shaderCode, GLint shadertype)
{

    unsigned int shader = currentContext->CreateShader(shadertype);
    currentContext->ShaderSource(shader, 1, &shaderCode, NULL);
    currentContext->CompileShader(shader);
    int success;
    currentContext->GetShaderiv(shader, GL_COMPILE_STATUS, &success);
    if (!success)
    {
        currentContext->GetShaderInfoLog(shader, 512, NULL, infolog);
        return 0;
    }
    else
    {
        return shader;
    }
}

SSCAPI unsigned int linkShaderProgram(GLuint shaderProgram)
{
    currentContext->LinkProgram(shaderProgram);

    int success;
    currentContext->GetProgramiv(shaderProgram, GL_LINK_STATUS, &success);
    if (!success)
    {
        currentContext->GetProgramInfoLog(shaderProgram, 512, NULL, infolog);
        return 0;
    }
    else
    {
        return shaderProgram;
    }

}

char* _cdecl readLog()
{
    infolog[511] = '\0';
    return &infolog;
}

void setCurrentGLContxt(GladGLContext* contextPtr)
{
    currentContext = contextPtr;
}