Enum glitter::types::Capability

pub enum Capability {
    Blend,
    CullFace,
    DepthTest,
    Dither,
    PolygonOffsetFill,
    SampleAlphaToCoverage,
    SampleCoverage,
    ScisscorTest,
    StencilTest,
}

The OpenGL drawing capabilities that can be enabled or disabled.

Variants

Blend

Blend newly-computed fragment colors with the current values in the color buffer.

CullFace

Cull polygons, based on their winding in window coordinates.

DepthTest

Perform a depth test for each fragment, only drawing fragments that are not obscured by other geometry. Also updates the depth buffer appropriately.

Dither

Dither color components or indices.

PolygonOffsetFill

When filling a polygon, add an offset to each fragment's depth value.

SampleAlphaToCoverage

When multisampling, use the alpha value from the sample location.

SampleCoverage

When multisampling, use the preset sample coverage value as the alpha value.

ScisscorTest

Only draw fragments within the scissor rectangle.

StencilTest

Perform a stencil test for each fragment, only drawing fragments that pass the currently-set stencil operation. Also updates the stencil buffer appropriately.

Methods

impl Capability

pub fn from_gl(gl_enum: GLenum) -> Result<Self, ()>

Convert from a raw OpenGL integer value to an enum variant. Returns an error if the value is not a valid enum variant.

pub fn gl_enum(&self) -> GLenum

Return the OpenGL integer value for a given enum variant.

Trait Implementations

impl Debug for Capability

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for Capability

fn clone(&self) -> Capability

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Capability

impl PartialEq for Capability

fn eq(&self, __arg_0: &Capability) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Eq for Capability

impl Hash for Capability

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].