Add support for WebGL2 FramebufferTextureLayer

Adds support for `FramebufferTextureLayer` WebGL2 call.

See: https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.4
This commit is contained in:
Mátyás Mustoha 2020-02-14 13:14:07 +01:00
parent 61cf25c98a
commit 8389189d94
9 changed files with 145 additions and 39 deletions

View file

@ -3581,6 +3581,36 @@ impl WebGL2RenderingContextMethods for WebGL2RenderingContext {
height,
))
}
/// https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.4
fn FramebufferTextureLayer(
&self,
target: u32,
attachment: u32,
texture: Option<&WebGLTexture>,
level: i32,
layer: i32,
) {
if let Some(tex) = texture {
handle_potential_webgl_error!(self.base, self.base.validate_ownership(tex), return);
}
let fb_slot = match target {
constants::FRAMEBUFFER | constants::DRAW_FRAMEBUFFER => {
self.base.get_draw_framebuffer_slot()
},
constants::READ_FRAMEBUFFER => self.base.get_read_framebuffer_slot(),
_ => return self.base.webgl_error(InvalidEnum),
};
match fb_slot.get() {
Some(fb) => handle_potential_webgl_error!(
self.base,
fb.texture_layer(attachment, texture, level, layer)
),
None => self.base.webgl_error(InvalidOperation),
}
}
}
impl LayoutCanvasWebGLRenderingContextHelpers for LayoutDom<WebGL2RenderingContext> {

View file

@ -727,6 +727,61 @@ impl WebGLFramebuffer {
Ok(())
}
pub fn texture_layer(
&self,
attachment: u32,
texture: Option<&WebGLTexture>,
level: i32,
layer: i32,
) -> WebGLResult<()> {
let binding = self
.attachment_binding(attachment)
.ok_or(WebGLError::InvalidEnum)?;
let context = self.upcast::<WebGLObject>().context();
let tex_id = match texture {
Some(texture) => {
let (max_level, max_layer) = match texture.target() {
Some(constants::TEXTURE_3D) => (
log2(context.limits().max_3d_texture_size),
context.limits().max_3d_texture_size - 1,
),
Some(constants::TEXTURE_2D) => (
log2(context.limits().max_tex_size),
context.limits().max_array_texture_layers - 1,
),
_ => return Err(WebGLError::InvalidOperation),
};
if level < 0 || level as u32 >= max_level {
return Err(WebGLError::InvalidValue);
}
if layer < 0 || layer as u32 >= max_layer {
return Err(WebGLError::InvalidValue);
}
*binding.borrow_mut() = Some(WebGLFramebufferAttachment::Texture {
texture: Dom::from_ref(texture),
level: level,
});
texture.attach_to_framebuffer(self);
Some(texture.id())
},
_ => None,
};
context.send_command(WebGLCommand::FramebufferTextureLayer(
self.target.get().unwrap(),
attachment,
tex_id,
level,
layer,
));
Ok(())
}
fn with_matching_renderbuffers<F>(&self, rb: &WebGLRenderbuffer, mut closure: F)
where
F: FnMut(&DomRefCell<Option<WebGLFramebufferAttachment>>, u32),

View file

@ -312,8 +312,8 @@ interface mixin WebGL2RenderingContextBase
/* Framebuffer objects */
// void blitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0,
// GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
// void framebufferTextureLayer(GLenum target, GLenum attachment, WebGLTexture? texture, GLint level,
// GLint layer);
void framebufferTextureLayer(GLenum target, GLenum attachment, WebGLTexture? texture, GLint level,
GLint layer);
void invalidateFramebuffer(GLenum target, sequence<GLenum> attachments);
void invalidateSubFramebuffer(GLenum target, sequence<GLenum> attachments,
GLint x, GLint y, GLsizei width, GLsizei height);