mirror of
https://github.com/italicsjenga/winit-sonoma-fix.git
synced 2024-12-24 22:31:30 +11:00
tomaka
commit
735df1c7d8
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@ -3,6 +3,7 @@
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use BuilderAttribs;
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use CreationError;
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use GlRequest;
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use PixelFormat;
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use Api;
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use libc;
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@ -16,6 +17,8 @@ pub struct Context {
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display: ffi::egl::types::EGLDisplay,
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context: ffi::egl::types::EGLContext,
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surface: ffi::egl::types::EGLSurface,
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api: Api,
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pixel_format: PixelFormat,
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}
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impl Context {
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@ -35,7 +38,7 @@ impl Context {
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display
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};
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let (_major, _minor) = unsafe {
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let egl_version = unsafe {
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let mut major: ffi::egl::types::EGLint = mem::uninitialized();
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let mut minor: ffi::egl::types::EGLint = mem::uninitialized();
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@ -46,62 +49,61 @@ impl Context {
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(major, minor)
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};
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let use_gles2 = match builder.gl_version {
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GlRequest::Specific(Api::OpenGlEs, (2, _)) => true,
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GlRequest::Specific(Api::OpenGlEs, _) => false,
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// binding the right API and choosing the version
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let (version, api) = unsafe {
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match builder.gl_version {
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GlRequest::Latest => {
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if egl_version >= (1, 4) {
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if egl.BindAPI(ffi::egl::OPENGL_API) != 0 {
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(None, Api::OpenGl)
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} else if egl.BindAPI(ffi::egl::OPENGL_ES_API) != 0 {
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(None, Api::OpenGlEs)
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} else {
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return Err(CreationError::NotSupported);
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}
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} else {
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(None, Api::OpenGlEs)
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}
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},
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GlRequest::Specific(Api::OpenGlEs, version) => {
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if egl_version >= (1, 2) {
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if egl.BindAPI(ffi::egl::OPENGL_ES_API) == 0 {
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return Err(CreationError::NotSupported);
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}
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}
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(Some(version), Api::OpenGlEs)
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},
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GlRequest::Specific(Api::OpenGl, version) => {
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if egl_version < (1, 4) {
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return Err(CreationError::NotSupported);
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}
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if egl.BindAPI(ffi::egl::OPENGL_API) == 0 {
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return Err(CreationError::NotSupported);
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}
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(Some(version), Api::OpenGl)
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},
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GlRequest::Specific(_, _) => return Err(CreationError::NotSupported),
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GlRequest::GlThenGles { opengles_version: (2, _), .. } => true,
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_ => false,
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GlRequest::GlThenGles { opengles_version, opengl_version } => {
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if egl_version >= (1, 4) {
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if egl.BindAPI(ffi::egl::OPENGL_API) != 0 {
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(Some(opengl_version), Api::OpenGl)
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} else if egl.BindAPI(ffi::egl::OPENGL_ES_API) != 0 {
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(Some(opengles_version), Api::OpenGlEs)
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} else {
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return Err(CreationError::NotSupported);
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}
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} else {
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(Some(opengles_version), Api::OpenGlEs)
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}
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},
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}
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};
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let mut attribute_list = vec!();
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attribute_list.push(ffi::egl::RENDERABLE_TYPE as i32);
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attribute_list.push(ffi::egl::OPENGL_ES2_BIT as i32);
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attribute_list.push(ffi::egl::CONFORMANT as i32);
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attribute_list.push(ffi::egl::OPENGL_ES2_BIT as i32);
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attribute_list.push(ffi::egl::SURFACE_TYPE as i32);
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attribute_list.push(ffi::egl::WINDOW_BIT as i32);
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{
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let (red, green, blue) = match builder.color_bits.unwrap_or(24) {
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24 => (8, 8, 8),
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16 => (6, 5, 6),
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_ => panic!("Bad color_bits"),
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};
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attribute_list.push(ffi::egl::RED_SIZE as i32);
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attribute_list.push(red);
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attribute_list.push(ffi::egl::GREEN_SIZE as i32);
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attribute_list.push(green);
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attribute_list.push(ffi::egl::BLUE_SIZE as i32);
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attribute_list.push(blue);
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}
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attribute_list.push(ffi::egl::DEPTH_SIZE as i32);
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attribute_list.push(builder.depth_bits.unwrap_or(8) as i32);
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attribute_list.push(ffi::egl::NONE as i32);
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let config = unsafe {
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let mut num_config: ffi::egl::types::EGLint = mem::uninitialized();
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let mut config: ffi::egl::types::EGLConfig = mem::uninitialized();
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if egl.ChooseConfig(display, attribute_list.as_ptr(), &mut config, 1,
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&mut num_config) == 0
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{
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return Err(CreationError::OsError(format!("eglChooseConfig failed")))
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}
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if num_config <= 0 {
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return Err(CreationError::OsError(format!("eglChooseConfig returned no available config")))
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}
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config
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};
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let configs = unsafe { try!(enumerate_configs(&egl, display, &egl_version, api, version)) };
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let (config_id, pixel_format) = try!(builder.choose_pixel_format(configs.into_iter()));
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let surface = unsafe {
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let surface = egl.CreateWindowSurface(display, config, native_window, ptr::null());
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let surface = egl.CreateWindowSurface(display, config_id, native_window, ptr::null());
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if surface.is_null() {
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return Err(CreationError::OsError(format!("eglCreateWindowSurface failed")))
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}
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@ -109,17 +111,40 @@ impl Context {
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};
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let context = unsafe {
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let mut context_attributes = vec!();
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context_attributes.push(ffi::egl::CONTEXT_CLIENT_VERSION as i32);
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context_attributes.push(2);
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context_attributes.push(ffi::egl::NONE as i32);
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if let Some(version) = version {
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try!(create_context(&egl, display, &egl_version, api, version, config_id,
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builder.gl_debug).map_err(|_| CreationError::NotSupported))
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let context = egl.CreateContext(display, config, ptr::null(),
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context_attributes.as_ptr());
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if context.is_null() {
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return Err(CreationError::OsError(format!("eglCreateContext failed")))
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} else if api == Api::OpenGlEs {
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if let Ok(ctxt) = create_context(&egl, display, &egl_version, api, (2, 0),
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config_id, builder.gl_debug)
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{
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ctxt
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} else if let Ok(ctxt) = create_context(&egl, display, &egl_version, api, (1, 0),
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config_id, builder.gl_debug)
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{
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ctxt
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} else {
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return Err(CreationError::NotSupported);
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}
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} else {
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if let Ok(ctxt) = create_context(&egl, display, &egl_version, api, (3, 2),
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config_id, builder.gl_debug)
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{
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ctxt
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} else if let Ok(ctxt) = create_context(&egl, display, &egl_version, api, (3, 1),
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config_id, builder.gl_debug)
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{
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ctxt
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} else if let Ok(ctxt) = create_context(&egl, display, &egl_version, api, (1, 0),
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config_id, builder.gl_debug)
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{
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ctxt
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} else {
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return Err(CreationError::NotSupported);
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}
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}
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context
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};
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Ok(Context {
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@ -127,6 +152,8 @@ impl Context {
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display: display,
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context: context,
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surface: surface,
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api: api,
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pixel_format: pixel_format,
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})
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}
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@ -140,6 +167,10 @@ impl Context {
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}
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}
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pub fn get_pixel_format(&self) -> &PixelFormat {
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&self.pixel_format
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}
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pub fn is_current(&self) -> bool {
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unsafe { self.egl.GetCurrentContext() == self.context }
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}
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@ -162,8 +193,8 @@ impl Context {
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}
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}
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pub fn get_api(&self) -> ::Api {
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::Api::OpenGlEs
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pub fn get_api(&self) -> Api {
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self.api
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}
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}
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@ -183,3 +214,143 @@ impl Drop for Context {
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}
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}
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}
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unsafe fn enumerate_configs(egl: &ffi::egl::Egl, display: ffi::egl::types::EGLDisplay,
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egl_version: &(ffi::egl::types::EGLint, ffi::egl::types::EGLint),
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api: Api, version: Option<(u8, u8)>)
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-> Result<Vec<(ffi::egl::types::EGLConfig, PixelFormat)>, CreationError>
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{
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let mut num_configs = mem::uninitialized();
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if egl.GetConfigs(display, ptr::null_mut(), 0, &mut num_configs) == 0 {
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return Err(CreationError::OsError(format!("eglGetConfigs failed")));
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}
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let mut configs_ids = Vec::with_capacity(num_configs as usize);
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if egl.GetConfigs(display, configs_ids.as_mut_ptr(),
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configs_ids.capacity() as ffi::egl::types::EGLint,
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&mut num_configs) == 0
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{
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return Err(CreationError::OsError(format!("eglGetConfigs failed")));
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}
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configs_ids.set_len(num_configs as usize);
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// analyzing each config
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let mut result = Vec::with_capacity(num_configs as usize);
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for config_id in configs_ids {
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macro_rules! attrib {
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($egl:expr, $display:expr, $config:expr, $attr:expr) => (
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{
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let mut value = mem::uninitialized();
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let res = $egl.GetConfigAttrib($display, $config,
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$attr as ffi::egl::types::EGLint, &mut value);
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if res == 0 {
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return Err(CreationError::OsError(format!("eglGetConfigAttrib failed")));
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}
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value
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}
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)
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};
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let renderable = attrib!(egl, display, config_id, ffi::egl::RENDERABLE_TYPE) as u32;
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let conformant = attrib!(egl, display, config_id, ffi::egl::CONFORMANT) as u32;
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if api == Api::OpenGlEs {
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if let Some(version) = version {
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if version.0 == 3 && (renderable & ffi::egl::OPENGL_ES3_BIT == 0 ||
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conformant & ffi::egl::OPENGL_ES3_BIT == 0)
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{
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continue;
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}
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if version.0 == 2 && (renderable & ffi::egl::OPENGL_ES2_BIT == 0 ||
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conformant & ffi::egl::OPENGL_ES2_BIT == 0)
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{
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continue;
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}
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if version.0 == 1 && (renderable & ffi::egl::OPENGL_ES_BIT == 0 ||
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conformant & ffi::egl::OPENGL_ES_BIT == 0)
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{
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continue;
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}
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}
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} else if api == Api::OpenGl {
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if renderable & ffi::egl::OPENGL_BIT == 0 ||
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conformant & ffi::egl::OPENGL_BIT == 0
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{
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continue;
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}
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}
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if attrib!(egl, display, config_id, ffi::egl::SURFACE_TYPE) & ffi::egl::WINDOW_BIT as i32 == 0 {
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continue;
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}
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if attrib!(egl, display, config_id, ffi::egl::TRANSPARENT_TYPE) != ffi::egl::NONE as i32 {
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continue;
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}
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if attrib!(egl, display, config_id, ffi::egl::COLOR_BUFFER_TYPE) != ffi::egl::RGB_BUFFER as i32 {
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continue;
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}
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result.push((config_id, PixelFormat {
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hardware_accelerated: attrib!(egl, display, config_id, ffi::egl::CONFIG_CAVEAT)
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!= ffi::egl::SLOW_CONFIG as i32,
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red_bits: attrib!(egl, display, config_id, ffi::egl::RED_SIZE) as u8,
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green_bits: attrib!(egl, display, config_id, ffi::egl::BLUE_SIZE) as u8,
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blue_bits: attrib!(egl, display, config_id, ffi::egl::GREEN_SIZE) as u8,
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alpha_bits: attrib!(egl, display, config_id, ffi::egl::ALPHA_SIZE) as u8,
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depth_bits: attrib!(egl, display, config_id, ffi::egl::DEPTH_SIZE) as u8,
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stencil_bits: attrib!(egl, display, config_id, ffi::egl::STENCIL_SIZE) as u8,
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stereoscopy: false,
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double_buffer: true,
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multisampling: match attrib!(egl, display, config_id, ffi::egl::SAMPLES) {
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0 | 1 => None,
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a => Some(a as u16),
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},
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srgb: false, // TODO: use EGL_KHR_gl_colorspace to know that
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}));
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}
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Ok(result)
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}
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unsafe fn create_context(egl: &ffi::egl::Egl, display: ffi::egl::types::EGLDisplay,
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egl_version: &(ffi::egl::types::EGLint, ffi::egl::types::EGLint),
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api: Api, version: (u8, u8), config_id: ffi::egl::types::EGLConfig,
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gl_debug: bool)
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-> Result<ffi::egl::types::EGLContext, ()>
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{
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let mut context_attributes = vec![];
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if egl_version >= &(1, 5) {
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context_attributes.push(ffi::egl::CONTEXT_MAJOR_VERSION as i32);
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context_attributes.push(version.0 as i32);
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context_attributes.push(ffi::egl::CONTEXT_MINOR_VERSION as i32);
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context_attributes.push(version.1 as i32);
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if gl_debug {
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context_attributes.push(ffi::egl::CONTEXT_OPENGL_DEBUG as i32);
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context_attributes.push(ffi::egl::TRUE as i32);
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}
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} else {
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if api == Api::OpenGlEs {
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context_attributes.push(ffi::egl::CONTEXT_CLIENT_VERSION as i32);
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context_attributes.push(version.0 as i32);
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}
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}
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context_attributes.push(ffi::egl::NONE as i32);
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let context = egl.CreateContext(display, config_id, ptr::null(),
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context_attributes.as_ptr());
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if context.is_null() {
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return Err(());
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}
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Ok(context)
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}
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Reference in a new issue