diff --git a/platform/iphone/gl_view.mm b/platform/iphone/gl_view.mm index 5b4d1f8226a..054c066224a 100644 --- a/platform/iphone/gl_view.mm +++ b/platform/iphone/gl_view.mm @@ -47,6 +47,7 @@ @end */ +bool gles3_available = true; int gl_view_base_fb; static String keyboard_text; static GLView *_instance = NULL; @@ -288,8 +289,12 @@ static void clear_touches() { context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES3]; if (!context || ![EAGLContext setCurrentContext:context] || ![self createFramebuffer]) { - [self release]; - return nil; + context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2]; + gles3_available = false; + if (!context || ![EAGLContext setCurrentContext:context] || ![self createFramebuffer]) { + [self release]; + return nil; + } } // Default the animation interval to 1/60th of a second. diff --git a/platform/iphone/os_iphone.cpp b/platform/iphone/os_iphone.cpp index e996a5905b8..dd764b71732 100644 --- a/platform/iphone/os_iphone.cpp +++ b/platform/iphone/os_iphone.cpp @@ -32,6 +32,7 @@ #include "os_iphone.h" +#include "drivers/gles2/rasterizer_gles2.h" #include "drivers/gles3/rasterizer_gles3.h" #include "servers/visual/visual_server_raster.h" #include "servers/visual/visual_server_wrap_mt.h" @@ -51,12 +52,19 @@ int OSIPhone::get_video_driver_count() const { - return 1; + return 2; }; const char *OSIPhone::get_video_driver_name(int p_driver) const { - return "GLES3"; + switch (p_driver) { + case VIDEO_DRIVER_GLES3: + return "GLES3"; + case VIDEO_DRIVER_GLES2: + return "GLES2"; + } + ERR_EXPLAIN("Invalid video driver index " + itos(p_driver)); + ERR_FAIL_V(NULL); }; OSIPhone *OSIPhone::get_singleton() { @@ -97,16 +105,48 @@ int OSIPhone::get_current_video_driver() const { return video_driver_index; } +extern bool gles3_available; // from gl_view.mm + Error OSIPhone::initialize(const VideoMode &p_desired, int p_video_driver, int p_audio_driver) { - video_driver_index = VIDEO_DRIVER_GLES3; + bool use_gl3 = GLOBAL_GET("rendering/quality/driver/driver_name") == "GLES3"; + bool gl_initialization_error = false; - if (RasterizerGLES3::is_viable() != OK) { + while (true) { + if (use_gl3) { + if (RasterizerGLES3::is_viable() == OK && gles3_available) { + RasterizerGLES3::register_config(); + RasterizerGLES3::make_current(); + break; + } else { + if (GLOBAL_GET("rendering/quality/driver/driver_fallback") == "Best") { + p_video_driver = VIDEO_DRIVER_GLES2; + use_gl3 = false; + continue; + } else { + gl_initialization_error = true; + break; + } + } + } else { + if (RasterizerGLES2::is_viable() == OK) { + RasterizerGLES2::register_config(); + RasterizerGLES2::make_current(); + break; + } else { + gl_initialization_error = true; + break; + } + } + } + + if (gl_initialization_error) { + OS::get_singleton()->alert("Your device does not support any of the supported OpenGL versions.", + "Unable to initialize Video driver"); return ERR_UNAVAILABLE; } - RasterizerGLES3::register_config(); - RasterizerGLES3::make_current(); + video_driver_index = p_video_driver; visual_server = memnew(VisualServerRaster); // FIXME: Reimplement threaded rendering if (get_render_thread_mode() != RENDER_THREAD_UNSAFE) { @@ -117,7 +157,10 @@ Error OSIPhone::initialize(const VideoMode &p_desired, int p_video_driver, int p //visual_server->cursor_set_visible(false, 0); // reset this to what it should be, it will have been set to 0 after visual_server->init() is called - RasterizerStorageGLES3::system_fbo = gl_view_base_fb; + if (use_gl3) + RasterizerStorageGLES3::system_fbo = gl_view_base_fb; + else + RasterizerStorageGLES2::system_fbo = gl_view_base_fb; AudioDriverManager::initialize(p_audio_driver);