Trait gstreamer_gl::prelude::GLFilterExt

pub trait GLFilterExt: 'static {
    fn draw_fullscreen_quad(&self);
    fn filter_texture(
        &self, 
        input: &Buffer, 
        output: &Buffer
    ) -> Result<(), BoolError>;
    fn render_to_target<P: FnMut(&GLFilter, &GLMemory) -> bool>(
        &self, 
        input: &GLMemory, 
        output: &GLMemory, 
        func: P
    ) -> Result<(), BoolError>;
    fn render_to_target_with_shader(
        &self, 
        input: &GLMemory, 
        output: &GLMemory, 
        shader: &GLShader
    );
}

Trait containing all GLFilter methods.

Implementors

GLFilter

Required methods

fn draw_fullscreen_quad(&self)

Render a fullscreen quad using the current GL state. The only GL state this modifies is the necessary vertex/index buffers and, if necessary, a Vertex Array Object for drawing a fullscreen quad. Framebuffer state, any shaders, viewport state, etc must be setup by the caller.

fn filter_texture(
    &self,
    input: &Buffer,
    output: &Buffer
) -> Result<(), BoolError>

Calls filter_texture vfunc with correctly mapped GstGLMemorys

input

an input buffer

output

an output buffer

Returns

whether the transformation succeeded

fn render_to_target<P: FnMut(&GLFilter, &GLMemory) -> bool>(
    &self,
    input: &GLMemory,
    output: &GLMemory,
    func: P
) -> Result<(), BoolError>

Transforms input into output using func on through FBO.

input

the input texture

output

the output texture

func

the function to transform input into output. called with data

Returns

the return value of func

fn render_to_target_with_shader(
    &self,
    input: &GLMemory,
    output: &GLMemory,
    shader: &GLShader
)

Transforms input into output using shader with a FBO.

See also: render_to_target()

input

the input texture

output

the output texture

shader

the shader to use.

Implementors

impl<O: IsA<GLFilter>> GLFilterExt for O

fn draw_fullscreen_quad(&self)

fn filter_texture(
    &self,
    input: &Buffer,
    output: &Buffer
) -> Result<(), BoolError>

fn render_to_target<P: FnMut(&GLFilter, &GLMemory) -> bool>(
    &self,
    input: &GLMemory,
    output: &GLMemory,
    func: P
) -> Result<(), BoolError>

fn render_to_target_with_shader(
    &self,
    input: &GLMemory,
    output: &GLMemory,
    shader: &GLShader
)