Struct GLES2Context

pub struct GLES2Context(/* private fields */);

Implementations

impl GLES2Context

pub fn new(ctx: &Context) -> Result<GLES2Context, Error>

Allocates a new OpenGLES 2.0 context that can be used to render to CoglOffscreen framebuffers (Rendering to Onscreen framebuffers is not currently supported).

To actually access the OpenGLES 2.0 api itself you need to use GLES2Context::get_vtable. You should not try to directly link to and use the symbols provided by the a system OpenGLES 2.0 driver.

Once you have allocated an OpenGLES 2.0 context you can make it current using cogl_push_gles2_context. For those familiar with using the EGL api, this serves a similar purpose to eglMakeCurrent.

<note>Before using this api applications can check for OpenGLES 2.0 api support by checking for FeatureID::OglFeatureIdGles2Context support with cogl_has_feature. This function will return false and return an GLES2ContextError::Unsupported error if the feature isn’t available.</note>

ctx

A Context

Returns

A newly allocated GLES2Context or None if there was an error and error will be updated in that case.

Trait Implementations

impl Clone for GLES2Context

fn clone(&self) -> GLES2Context

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GLES2Context

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for GLES2Context

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for GLES2Context

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for GLES2Context

fn cmp(&self, other: &GLES2Context) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<T: ObjectType> PartialEq<T> for GLES2Context

fn eq(&self, other: &T) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: ObjectType> PartialOrd<T> for GLES2Context

fn partial_cmp(&self, other: &T) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for GLES2Context

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for GLES2Context

impl IsA<Object> for GLES2Context