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Implement DOM to texture

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This commit is contained in:
Imanol Fernandez 2017-09-21 15:16:46 +02:00
parent a9022be0c3
commit 8ae0739bab
17 changed files with 238 additions and 13 deletions
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41
components/script/dom/webglrenderingcontext.rs
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@ -6,6 +6,7 @@ use byteorder::{NativeEndian, ReadBytesExt, WriteBytesExt};
use canvas_traits::canvas::{byte_swap, multiply_u8_pixel};
use canvas_traits::webgl::{WebGLContextShareMode, WebGLCommand, WebGLError};
use canvas_traits::webgl::{WebGLFramebufferBindingRequest, WebGLMsg, WebGLMsgSender, WebGLParameter, WebVRCommand};
use canvas_traits::webgl::DOMToTextureCommand;
use canvas_traits::webgl::WebGLError::*;
use canvas_traits::webgl::webgl_channel;
use core::cell::Ref;
@ -25,6 +26,7 @@ use dom::bindings::str::DOMString;
use dom::event::{Event, EventBubbles, EventCancelable};
use dom::htmlcanvaselement::HTMLCanvasElement;
use dom::htmlcanvaselement::utils as canvas_utils;
use dom::htmliframeelement::HTMLIFrameElement;
use dom::node::{Node, NodeDamage, window_from_node};
use dom::webgl_extensions::WebGLExtensions;
use dom::webgl_validations::WebGLValidator;
@ -3260,6 +3262,45 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
Ok(())
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.8
fn TexImageDOM(&self,
target: u32,
level: i32,
internal_format: u32,
width: i32,
height: i32,
format: u32,
data_type: u32,
source: &HTMLIFrameElement) -> Fallible<()> {
// Currently DOMToTexture only supports TEXTURE_2D, RGBA, UNSIGNED_BYTE and no levels.
if target != constants::TEXTURE_2D || level != 0 || internal_format != constants::RGBA ||
format != constants::RGBA || data_type != constants::UNSIGNED_BYTE {
return Ok(self.webgl_error(InvalidValue));
}
// Get bound texture
let texture = match self.bound_texture(constants::TEXTURE_2D) {
Some(texture) => texture,
None => {
return Ok(self.webgl_error(InvalidOperation));
}
};
let pipeline_id = source.pipeline_id().ok_or(Error::InvalidState)?;
let document_id = self.global().downcast::<Window>().ok_or(Error::InvalidState)?.webrender_document();
texture.set_attached_to_dom();
let command = DOMToTextureCommand::Attach(self.webgl_sender.context_id(),
texture.id(),
document_id,
pipeline_id.to_webrender(),
Size2D::new(width, height));
self.webgl_sender.send_dom_to_texture(command).unwrap();
Ok(())
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.8
#[allow(unsafe_code)]
unsafe fn TexSubImage2D(&self,