Texture Imported From Unity Not Showing Up OpenGL - c++

Question

I am trying to get the camera render texture from unity and display it on my opengl window triangle. I can get a regular texture to show up but the unity one results in a black screen.
Here is the function that runs once:
extern "C" void UNITY_INTERFACE_EXPORT UNITY_INTERFACE_API createSimpleWindow()
{
if (std::this_thread::get_id() == MAIN_THREAD_ID)
{
newContext = glfwCreateWindow(640, 480, "window", NULL, oldContext);
glfwMakeContextCurrent(newContext);
//drawing triangle
// start GLEW extension handler
glewExperimental = GL_TRUE;
glewInit();
// tell GL to only draw onto a pixel if the shape is closer to the viewer
glEnable(GL_DEPTH_TEST); // enable depth-testing
glDepthFunc(GL_LESS); // depth-testing interprets a smaller value as "closer"
//triangle pts
float points[] = {
0.0f, 0.5f, 0.0f, 0.5f, 1.0f,
0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, -0.5f, 0.0f, 0.0f, 0.0f
};
GLuint vbo = 0;
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, 15 * sizeof(float), points, GL_STATIC_DRAW);
vao = 0;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)0);
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)(3 * sizeof(float)));
glEnableVertexAttribArray(1);
GLuint vs = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vs, 1, &vertex_shader, NULL);
glCompileShader(vs);
GLuint fs = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fs, 1, &fragment_shader, NULL);
glCompileShader(fs);
shader_programme = glCreateProgram();
glAttachShader(shader_programme, fs);
glAttachShader(shader_programme, vs);
glLinkProgram(shader_programme);
glUseProgram(shader_programme);
////////////////////////////
//unity texture
void* textureDataPtr = s_CurrentAPI->BeginModifyTexture(g_TextureHandle, g_TextureWidth, g_TextureHeight, &textureRowPitch);
if (textureDataPtr) {
writeToLog("data contained from unity!!!!!!");
}
//regular texture
int width, height, nrComponents;
unsigned char *data = stbi_load("/Users/roma/Desktop/Escape Tech/BitBucketRepos/blankpluginGLFW/BlankPlugin/PluginSource/source/container2.png", &width, &height, &nrComponents, 4);
//set up texture
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
//glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, g_TextureWidth, g_TextureHeight, GL_RGBA, GL_UNSIGNED_BYTE, textureDataPtr);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureDataPtr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glUniform1i(glGetUniformLocation(shader_programme, "texture1"), 0);
//s_CurrentAPI->EndModifyTexture(g_TextureHandle, g_TextureWidth, g_TextureHeight, textureRowPitch, textureDataPtr);
//////////////////////////////////
glfwSetKeyCallback(newContext, key_callback);
}
else
{
writeToLog("not main thread");
}
}
void* RenderAPI_OpenGLCoreES::BeginModifyTexture(void* textureHandle, int textureWidth, int textureHeight, int* outRowPitch)
{
const int rowPitch = textureWidth * 4;
// Just allocate a system memory buffer here for simplicity
unsigned char* data = new unsigned char[rowPitch * textureHeight];
*outRowPitch = rowPitch;
return data;
}
When I do a "if (textureDataPtr)" write to log it writes correctly so I know there is data it is just not showing up.
Any help would be greatly appreciated!