mirror of
https://github.com/italicsjenga/winit-sonoma-fix.git
synced 2024-10-17 23:41:33 +11:00
Update EGL implementation
This commit is contained in:
Pierre Krieger
parent
a428e0608f
commit
4c9348ab50
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@ -9,6 +9,7 @@ use GlContext;
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use GlRequest;
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use PixelFormat;
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use PixelFormatRequirements;
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use ReleaseBehavior;
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use Robustness;
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use Api;
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@ -247,8 +248,9 @@ impl Context {
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}
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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!(pf_reqs.choose_pixel_format(configs.into_iter()));
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let (config_id, pixel_format) = unsafe {
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try!(choose_fbconfig(&egl, display, &egl_version, api, version, pf_reqs))
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};
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Ok(ContextPrototype {
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opengl: opengl,
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@ -451,108 +453,162 @@ impl<'a> ContextPrototype<'a> {
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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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unsafe fn choose_fbconfig(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)>, reqs: &PixelFormatRequirements)
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-> Result<(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 descriptor = {
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let mut out: Vec<c_int> = Vec::with_capacity(37);
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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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if egl_version >= &(1, 2) {
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out.push(ffi::egl::COLOR_BUFFER_TYPE as c_int);
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out.push(ffi::egl::RGB_BUFFER as c_int);
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}
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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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if egl_version >= &(1, 3) {
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out.push(ffi::egl::SURFACE_TYPE as c_int);
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out.push((ffi::egl::WINDOW_BIT | ffi::egl::PBUFFER_BIT) as c_int);
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}
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match (api, version) {
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(Api::OpenGlEs, Some((3, _))) => {
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if egl_version < &(1, 3) { return Err(CreationError::NoAvailablePixelFormat); }
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out.push(ffi::egl::RENDERABLE_TYPE as c_int);
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out.push(ffi::egl::OPENGL_ES3_BIT as c_int);
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out.push(ffi::egl::CONFORMANT as c_int);
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out.push(ffi::egl::OPENGL_ES3_BIT as c_int);
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},
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(Api::OpenGlEs, Some((2, _))) => {
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if egl_version < &(1, 3) { return Err(CreationError::NoAvailablePixelFormat); }
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out.push(ffi::egl::RENDERABLE_TYPE as c_int);
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out.push(ffi::egl::OPENGL_ES2_BIT as c_int);
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out.push(ffi::egl::CONFORMANT as c_int);
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out.push(ffi::egl::OPENGL_ES2_BIT as c_int);
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},
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(Api::OpenGlEs, Some((1, _))) => {
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if egl_version >= &(1, 3) {
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out.push(ffi::egl::RENDERABLE_TYPE as c_int);
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out.push(ffi::egl::OPENGL_ES_BIT as c_int);
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out.push(ffi::egl::CONFORMANT as c_int);
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out.push(ffi::egl::OPENGL_ES_BIT as c_int);
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}
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)
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},
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(Api::OpenGlEs, _) => unimplemented!(),
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(Api::OpenGl, Some((1, _))) => {
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if egl_version < &(1, 3) { return Err(CreationError::NoAvailablePixelFormat); }
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out.push(ffi::egl::RENDERABLE_TYPE as c_int);
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out.push(ffi::egl::OPENGL_BIT as c_int);
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out.push(ffi::egl::CONFORMANT as c_int);
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out.push(ffi::egl::OPENGL_BIT as c_int);
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},
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(_, _) => unimplemented!(),
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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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if let Some(hardware_accelerated) = reqs.hardware_accelerated {
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out.push(ffi::egl::CONFIG_CAVEAT as c_int);
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out.push(if hardware_accelerated {
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ffi::egl::NONE as c_int
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} else {
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ffi::egl::SLOW_CONFIG as c_int
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});
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}
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if attrib!(egl, display, config_id, ffi::egl::SURFACE_TYPE) &
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(ffi::egl::WINDOW_BIT | ffi::egl::PBUFFER_BIT) as i32 == 0
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{
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continue;
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if let Some(color) = reqs.color_bits {
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out.push(ffi::egl::RED_SIZE as c_int);
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out.push((color / 3) as c_int);
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out.push(ffi::egl::GREEN_SIZE as c_int);
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out.push((color / 3 + if color % 3 != 0 { 1 } else { 0 }) as c_int);
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out.push(ffi::egl::BLUE_SIZE as c_int);
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out.push((color / 3 + if color % 3 == 2 { 1 } else { 0 }) as c_int);
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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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if let Some(alpha) = reqs.alpha_bits {
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out.push(ffi::egl::ALPHA_SIZE as c_int);
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out.push(alpha as c_int);
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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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if let Some(depth) = reqs.depth_bits {
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out.push(ffi::egl::DEPTH_SIZE as c_int);
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out.push(depth as c_int);
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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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color_bits: attrib!(egl, display, config_id, ffi::egl::RED_SIZE) as u8 +
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attrib!(egl, display, config_id, ffi::egl::BLUE_SIZE) as u8 +
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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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if let Some(stencil) = reqs.stencil_bits {
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out.push(ffi::egl::STENCIL_SIZE as c_int);
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out.push(stencil as c_int);
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}
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if let Some(true) = reqs.double_buffer {
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return Err(CreationError::NoAvailablePixelFormat);
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}
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if let Some(multisampling) = reqs.multisampling {
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out.push(ffi::egl::SAMPLES as c_int);
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out.push(multisampling as c_int);
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}
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if reqs.stereoscopy {
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return Err(CreationError::NoAvailablePixelFormat);
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}
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// FIXME: srgb is not taken into account
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match reqs.release_behavior {
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ReleaseBehavior::Flush => (),
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ReleaseBehavior::None => {
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// TODO: with EGL you need to manually set the behavior
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unimplemented!()
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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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out.push(0);
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out
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};
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// calling `eglChooseConfig`
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let mut config_id = mem::uninitialized();
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let mut num_configs = mem::uninitialized();
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if egl.ChooseConfig(display, descriptor.as_ptr(), &mut config_id, 1, &mut num_configs) == 0 {
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return Err(CreationError::OsError(format!("eglChooseConfig failed")));
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}
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if num_configs == 0 {
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return Err(CreationError::NoAvailablePixelFormat);
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}
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Ok(result)
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// analyzing each config
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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 desc = 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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color_bits: attrib!(egl, display, config_id, ffi::egl::RED_SIZE) as u8 +
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attrib!(egl, display, config_id, ffi::egl::BLUE_SIZE) as u8 +
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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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Ok((config_id, desc))
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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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