static bool gl_init_extensions(struct gs_device* device)
{
if (!ogl_IsVersionGEQ(2, 1)) {
blog(LOG_ERROR, "obs-studio requires OpenGL version 2.1 or "
"higher.");
return false;
}
gl_enable_debug();
if (!ogl_IsVersionGEQ(3, 0) && !ogl_ext_ARB_framebuffer_object) {
blog(LOG_ERROR, "OpenGL extension ARB_framebuffer_object "
"is required.");
return false;
}
if (ogl_IsVersionGEQ(3, 2) || ogl_ext_ARB_seamless_cube_map) {
gl_enable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
}
if (!ogl_IsVersionGEQ(4, 1) && !ogl_ext_ARB_separate_shader_objects) {
blog(LOG_ERROR, "OpenGL extension ARB_separate_shader_objects "
"is required.");
return false;
}
if (ogl_IsVersionGEQ(4, 3) || ogl_ext_ARB_copy_image)
device->copy_type = COPY_TYPE_ARB;
else if (ogl_ext_NV_copy_image)
device->copy_type = COPY_TYPE_NV;
else
device->copy_type = COPY_TYPE_FBO_BLIT; /* ?? */
return true;
}
bool initWindow(int width, int height) {
if (!glfwInit()) {
std::cerr << "Couldn't init GLFW.\n";
return false;
}
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 1);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 5);
//glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
//glfwOpenWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
glfwOpenWindowHint(GLFW_WINDOW_NO_RESIZE, GL_TRUE);
if (!glfwOpenWindow(width, height, 8, 8, 8, 0, 0, 8, GLFW_WINDOW)) {
std::cerr << "Couldn't open window.\n";
return false;
}
if (ogl_LoadFunctions() != ogl_LOAD_SUCCEEDED) {
std::cerr << "Couldn't init OpenGL functions.\n";
return false;
}
if (ogl_IsVersionGEQ(1, 5)) {
std::cerr << "OpenGL 1.5 not supported.\n";
return false;
}
glfwSwapInterval(1);
glViewport(0, 0, width, height);
return true;
}
static void gl_enable_debug()
{
/* Perhaps we should create GLEW contexts? */
if (ogl_IsVersionGEQ(4, 3)) {
glDebugMessageCallback(gl_debug_proc, NULL);
gl_enable(GL_DEBUG_OUTPUT);
} else if (ogl_ext_ARB_debug_output) {
glDebugMessageCallbackARB(gl_debug_proc, NULL);
} else {
blog(LOG_DEBUG, "Failed to set GL debug callback as it is "
"not supported.");
}
}
