wgpu_hal/gles/queue.rs
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use super::{conv::is_layered_target, Command as C, PrivateCapabilities};
use arrayvec::ArrayVec;
use glow::HasContext;
use std::{
mem::size_of,
slice,
sync::{atomic::Ordering, Arc},
};
const DEBUG_ID: u32 = 0;
fn extract_marker<'a>(data: &'a [u8], range: &std::ops::Range<u32>) -> &'a str {
std::str::from_utf8(&data[range.start as usize..range.end as usize]).unwrap()
}
fn get_2d_target(target: u32, array_layer: u32) -> u32 {
const CUBEMAP_FACES: [u32; 6] = [
glow::TEXTURE_CUBE_MAP_POSITIVE_X,
glow::TEXTURE_CUBE_MAP_NEGATIVE_X,
glow::TEXTURE_CUBE_MAP_POSITIVE_Y,
glow::TEXTURE_CUBE_MAP_NEGATIVE_Y,
glow::TEXTURE_CUBE_MAP_POSITIVE_Z,
glow::TEXTURE_CUBE_MAP_NEGATIVE_Z,
];
match target {
glow::TEXTURE_2D => target,
glow::TEXTURE_CUBE_MAP => CUBEMAP_FACES[array_layer as usize],
_ => unreachable!(),
}
}
fn get_z_offset(target: u32, base: &crate::TextureCopyBase) -> u32 {
match target {
glow::TEXTURE_2D_ARRAY | glow::TEXTURE_CUBE_MAP_ARRAY => base.array_layer,
glow::TEXTURE_3D => base.origin.z,
_ => unreachable!(),
}
}
impl super::Queue {
/// Performs a manual shader clear, used as a workaround for a clearing bug on mesa
unsafe fn perform_shader_clear(&self, gl: &glow::Context, draw_buffer: u32, color: [f32; 4]) {
let shader_clear = self
.shader_clear_program
.as_ref()
.expect("shader_clear_program should always be set if the workaround is enabled");
unsafe { gl.use_program(Some(shader_clear.program)) };
unsafe {
gl.uniform_4_f32(
Some(&shader_clear.color_uniform_location),
color[0],
color[1],
color[2],
color[3],
)
};
unsafe { gl.disable(glow::DEPTH_TEST) };
unsafe { gl.disable(glow::STENCIL_TEST) };
unsafe { gl.disable(glow::SCISSOR_TEST) };
unsafe { gl.disable(glow::BLEND) };
unsafe { gl.disable(glow::CULL_FACE) };
unsafe { gl.draw_buffers(&[glow::COLOR_ATTACHMENT0 + draw_buffer]) };
unsafe { gl.draw_arrays(glow::TRIANGLES, 0, 3) };
let draw_buffer_count = self.draw_buffer_count.load(Ordering::Relaxed);
if draw_buffer_count != 0 {
// Reset the draw buffers to what they were before the clear
let indices = (0..draw_buffer_count as u32)
.map(|i| glow::COLOR_ATTACHMENT0 + i)
.collect::<ArrayVec<_, { crate::MAX_COLOR_ATTACHMENTS }>>();
unsafe { gl.draw_buffers(&indices) };
}
}
unsafe fn reset_state(&self, gl: &glow::Context) {
unsafe { gl.use_program(None) };
unsafe { gl.bind_framebuffer(glow::FRAMEBUFFER, None) };
unsafe { gl.disable(glow::DEPTH_TEST) };
unsafe { gl.disable(glow::STENCIL_TEST) };
unsafe { gl.disable(glow::SCISSOR_TEST) };
unsafe { gl.disable(glow::BLEND) };
unsafe { gl.disable(glow::CULL_FACE) };
unsafe { gl.disable(glow::POLYGON_OFFSET_FILL) };
unsafe { gl.disable(glow::SAMPLE_ALPHA_TO_COVERAGE) };
if self.features.contains(wgt::Features::DEPTH_CLIP_CONTROL) {
unsafe { gl.disable(glow::DEPTH_CLAMP) };
}
unsafe { gl.bind_buffer(glow::ELEMENT_ARRAY_BUFFER, None) };
let mut current_index_buffer = self.current_index_buffer.lock();
*current_index_buffer = None;
}
unsafe fn set_attachment(
&self,
gl: &glow::Context,
fbo_target: u32,
attachment: u32,
view: &super::TextureView,
) {
match view.inner {
super::TextureInner::Renderbuffer { raw } => {
unsafe {
gl.framebuffer_renderbuffer(
fbo_target,
attachment,
glow::RENDERBUFFER,
Some(raw),
)
};
}
super::TextureInner::DefaultRenderbuffer => panic!("Unexpected default RBO"),
super::TextureInner::Texture { raw, target } => {
let num_layers = view.array_layers.end - view.array_layers.start;
if num_layers > 1 {
#[cfg(webgl)]
unsafe {
gl.framebuffer_texture_multiview_ovr(
fbo_target,
attachment,
Some(raw),
view.mip_levels.start as i32,
view.array_layers.start as i32,
num_layers as i32,
)
};
} else if is_layered_target(target) {
unsafe {
gl.framebuffer_texture_layer(
fbo_target,
attachment,
Some(raw),
view.mip_levels.start as i32,
view.array_layers.start as i32,
)
};
} else {
unsafe {
assert_eq!(view.mip_levels.len(), 1);
gl.framebuffer_texture_2d(
fbo_target,
attachment,
get_2d_target(target, view.array_layers.start),
Some(raw),
view.mip_levels.start as i32,
)
};
}
}
#[cfg(webgl)]
super::TextureInner::ExternalFramebuffer { ref inner } => unsafe {
gl.bind_external_framebuffer(glow::FRAMEBUFFER, inner);
},
}
}
unsafe fn process(
&self,
gl: &glow::Context,
command: &C,
#[cfg_attr(target_arch = "wasm32", allow(unused))] data_bytes: &[u8],
queries: &[glow::Query],
) {
match *command {
C::Draw {
topology,
first_vertex,
vertex_count,
instance_count,
first_instance,
ref first_instance_location,
} => {
let supports_full_instancing = self
.shared
.private_caps
.contains(PrivateCapabilities::FULLY_FEATURED_INSTANCING);
if supports_full_instancing {
unsafe {
gl.draw_arrays_instanced_base_instance(
topology,
first_vertex as i32,
vertex_count as i32,
instance_count as i32,
first_instance,
)
}
} else {
unsafe {
gl.uniform_1_u32(first_instance_location.as_ref(), first_instance);
}
// Don't use `gl.draw_arrays` for `instance_count == 1`.
// Angle has a bug where it doesn't consider the instance divisor when `DYNAMIC_DRAW` is used in `draw_arrays`.
// See https://github.com/gfx-rs/wgpu/issues/3578
unsafe {
gl.draw_arrays_instanced(
topology,
first_vertex as i32,
vertex_count as i32,
instance_count as i32,
)
}
};
}
C::DrawIndexed {
topology,
index_type,
index_count,
index_offset,
base_vertex,
first_instance,
instance_count,
ref first_instance_location,
} => {
let supports_full_instancing = self
.shared
.private_caps
.contains(PrivateCapabilities::FULLY_FEATURED_INSTANCING);
if supports_full_instancing {
unsafe {
gl.draw_elements_instanced_base_vertex_base_instance(
topology,
index_count as i32,
index_type,
index_offset as i32,
instance_count as i32,
base_vertex,
first_instance,
)
}
} else {
unsafe { gl.uniform_1_u32(first_instance_location.as_ref(), first_instance) };
if base_vertex == 0 {
unsafe {
// Don't use `gl.draw_elements`/`gl.draw_elements_base_vertex` for `instance_count == 1`.
// Angle has a bug where it doesn't consider the instance divisor when `DYNAMIC_DRAW` is used in `gl.draw_elements`/`gl.draw_elements_base_vertex`.
// See https://github.com/gfx-rs/wgpu/issues/3578
gl.draw_elements_instanced(
topology,
index_count as i32,
index_type,
index_offset as i32,
instance_count as i32,
)
}
} else {
// If we've gotten here, wgpu-core has already validated that this function exists via the DownlevelFlags::BASE_VERTEX feature.
unsafe {
gl.draw_elements_instanced_base_vertex(
topology,
index_count as _,
index_type,
index_offset as i32,
instance_count as i32,
base_vertex,
)
}
}
}
}
C::DrawIndirect {
topology,
indirect_buf,
indirect_offset,
ref first_instance_location,
} => {
unsafe { gl.uniform_1_u32(first_instance_location.as_ref(), 0) };
unsafe { gl.bind_buffer(glow::DRAW_INDIRECT_BUFFER, Some(indirect_buf)) };
unsafe { gl.draw_arrays_indirect_offset(topology, indirect_offset as i32) };
}
C::DrawIndexedIndirect {
topology,
index_type,
indirect_buf,
indirect_offset,
ref first_instance_location,
} => {
unsafe { gl.uniform_1_u32(first_instance_location.as_ref(), 0) };
unsafe { gl.bind_buffer(glow::DRAW_INDIRECT_BUFFER, Some(indirect_buf)) };
unsafe {
gl.draw_elements_indirect_offset(topology, index_type, indirect_offset as i32)
};
}
C::Dispatch(group_counts) => {
unsafe { gl.dispatch_compute(group_counts[0], group_counts[1], group_counts[2]) };
}
C::DispatchIndirect {
indirect_buf,
indirect_offset,
} => {
unsafe { gl.bind_buffer(glow::DISPATCH_INDIRECT_BUFFER, Some(indirect_buf)) };
unsafe { gl.dispatch_compute_indirect(indirect_offset as i32) };
}
C::ClearBuffer {
ref dst,
dst_target,
ref range,
} => match dst.raw {
Some(buffer) => {
// When `INDEX_BUFFER_ROLE_CHANGE` isn't available, we can't copy into the
// index buffer from the zero buffer. This would fail in Chrome with the
// following message:
//
// > Cannot copy into an element buffer destination from a non-element buffer
// > source
//
// Instead, we'll upload zeroes into the buffer.
let can_use_zero_buffer = self
.shared
.private_caps
.contains(PrivateCapabilities::INDEX_BUFFER_ROLE_CHANGE)
|| dst_target != glow::ELEMENT_ARRAY_BUFFER;
if can_use_zero_buffer {
unsafe { gl.bind_buffer(glow::COPY_READ_BUFFER, Some(self.zero_buffer)) };
unsafe { gl.bind_buffer(dst_target, Some(buffer)) };
let mut dst_offset = range.start;
while dst_offset < range.end {
let size = (range.end - dst_offset).min(super::ZERO_BUFFER_SIZE as u64);
unsafe {
gl.copy_buffer_sub_data(
glow::COPY_READ_BUFFER,
dst_target,
0,
dst_offset as i32,
size as i32,
)
};
dst_offset += size;
}
} else {
unsafe { gl.bind_buffer(dst_target, Some(buffer)) };
let zeroes = vec![0u8; (range.end - range.start) as usize];
unsafe {
gl.buffer_sub_data_u8_slice(dst_target, range.start as i32, &zeroes)
};
}
}
None => {
dst.data.as_ref().unwrap().lock().unwrap().as_mut_slice()
[range.start as usize..range.end as usize]
.fill(0);
}
},
C::CopyBufferToBuffer {
ref src,
src_target,
ref dst,
dst_target,
copy,
} => {
let copy_src_target = glow::COPY_READ_BUFFER;
let is_index_buffer_only_element_dst = !self
.shared
.private_caps
.contains(PrivateCapabilities::INDEX_BUFFER_ROLE_CHANGE)
&& dst_target == glow::ELEMENT_ARRAY_BUFFER
|| src_target == glow::ELEMENT_ARRAY_BUFFER;
// WebGL not allowed to copy data from other targets to element buffer and can't copy element data to other buffers
let copy_dst_target = if is_index_buffer_only_element_dst {
glow::ELEMENT_ARRAY_BUFFER
} else {
glow::COPY_WRITE_BUFFER
};
let size = copy.size.get() as usize;
match (src.raw, dst.raw) {
(Some(ref src), Some(ref dst)) => {
unsafe { gl.bind_buffer(copy_src_target, Some(*src)) };
unsafe { gl.bind_buffer(copy_dst_target, Some(*dst)) };
unsafe {
gl.copy_buffer_sub_data(
copy_src_target,
copy_dst_target,
copy.src_offset as _,
copy.dst_offset as _,
copy.size.get() as _,
)
};
}
(Some(src), None) => {
let mut data = dst.data.as_ref().unwrap().lock().unwrap();
let dst_data = &mut data.as_mut_slice()
[copy.dst_offset as usize..copy.dst_offset as usize + size];
unsafe { gl.bind_buffer(copy_src_target, Some(src)) };
unsafe {
self.shared.get_buffer_sub_data(
gl,
copy_src_target,
copy.src_offset as i32,
dst_data,
)
};
}
(None, Some(dst)) => {
let data = src.data.as_ref().unwrap().lock().unwrap();
let src_data = &data.as_slice()
[copy.src_offset as usize..copy.src_offset as usize + size];
unsafe { gl.bind_buffer(copy_dst_target, Some(dst)) };
unsafe {
gl.buffer_sub_data_u8_slice(
copy_dst_target,
copy.dst_offset as i32,
src_data,
)
};
}
(None, None) => {
todo!()
}
}
unsafe { gl.bind_buffer(copy_src_target, None) };
if is_index_buffer_only_element_dst {
unsafe {
gl.bind_buffer(
glow::ELEMENT_ARRAY_BUFFER,
*self.current_index_buffer.lock(),
)
};
} else {
unsafe { gl.bind_buffer(copy_dst_target, None) };
}
}
#[cfg(webgl)]
C::CopyExternalImageToTexture {
ref src,
dst,
dst_target,
dst_format,
dst_premultiplication,
ref copy,
} => {
const UNPACK_FLIP_Y_WEBGL: u32 =
web_sys::WebGl2RenderingContext::UNPACK_FLIP_Y_WEBGL;
const UNPACK_PREMULTIPLY_ALPHA_WEBGL: u32 =
web_sys::WebGl2RenderingContext::UNPACK_PREMULTIPLY_ALPHA_WEBGL;
unsafe {
if src.flip_y {
gl.pixel_store_bool(UNPACK_FLIP_Y_WEBGL, true);
}
if dst_premultiplication {
gl.pixel_store_bool(UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
}
}
unsafe { gl.bind_texture(dst_target, Some(dst)) };
let format_desc = self.shared.describe_texture_format(dst_format);
if is_layered_target(dst_target) {
let z_offset = get_z_offset(dst_target, ©.dst_base);
match src.source {
wgt::ExternalImageSource::ImageBitmap(ref b) => unsafe {
gl.tex_sub_image_3d_with_image_bitmap(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
z_offset as i32,
copy.size.width as i32,
copy.size.height as i32,
copy.size.depth as i32,
format_desc.external,
format_desc.data_type,
b,
);
},
wgt::ExternalImageSource::HTMLImageElement(ref i) => unsafe {
gl.tex_sub_image_3d_with_html_image_element(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
z_offset as i32,
copy.size.width as i32,
copy.size.height as i32,
copy.size.depth as i32,
format_desc.external,
format_desc.data_type,
i,
);
},
wgt::ExternalImageSource::HTMLVideoElement(ref v) => unsafe {
gl.tex_sub_image_3d_with_html_video_element(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
z_offset as i32,
copy.size.width as i32,
copy.size.height as i32,
copy.size.depth as i32,
format_desc.external,
format_desc.data_type,
v,
);
},
#[cfg(web_sys_unstable_apis)]
wgt::ExternalImageSource::VideoFrame(ref v) => unsafe {
gl.tex_sub_image_3d_with_video_frame(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
z_offset as i32,
copy.size.width as i32,
copy.size.height as i32,
copy.size.depth as i32,
format_desc.external,
format_desc.data_type,
v,
)
},
wgt::ExternalImageSource::ImageData(ref i) => unsafe {
gl.tex_sub_image_3d_with_image_data(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
z_offset as i32,
copy.size.width as i32,
copy.size.height as i32,
copy.size.depth as i32,
format_desc.external,
format_desc.data_type,
i,
);
},
wgt::ExternalImageSource::HTMLCanvasElement(ref c) => unsafe {
gl.tex_sub_image_3d_with_html_canvas_element(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
z_offset as i32,
copy.size.width as i32,
copy.size.height as i32,
copy.size.depth as i32,
format_desc.external,
format_desc.data_type,
c,
);
},
wgt::ExternalImageSource::OffscreenCanvas(_) => unreachable!(),
}
} else {
let dst_target = get_2d_target(dst_target, copy.dst_base.array_layer);
match src.source {
wgt::ExternalImageSource::ImageBitmap(ref b) => unsafe {
gl.tex_sub_image_2d_with_image_bitmap_and_width_and_height(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
copy.size.width as i32,
copy.size.height as i32,
format_desc.external,
format_desc.data_type,
b,
);
},
wgt::ExternalImageSource::HTMLImageElement(ref i) => unsafe {
gl.tex_sub_image_2d_with_html_image_and_width_and_height(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
copy.size.width as i32,
copy.size.height as i32,
format_desc.external,
format_desc.data_type,
i,
)
},
wgt::ExternalImageSource::HTMLVideoElement(ref v) => unsafe {
gl.tex_sub_image_2d_with_html_video_and_width_and_height(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
copy.size.width as i32,
copy.size.height as i32,
format_desc.external,
format_desc.data_type,
v,
)
},
#[cfg(web_sys_unstable_apis)]
wgt::ExternalImageSource::VideoFrame(ref v) => unsafe {
gl.tex_sub_image_2d_with_video_frame_and_width_and_height(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
copy.size.width as i32,
copy.size.height as i32,
format_desc.external,
format_desc.data_type,
v,
)
},
wgt::ExternalImageSource::ImageData(ref i) => unsafe {
gl.tex_sub_image_2d_with_image_data_and_width_and_height(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
copy.size.width as i32,
copy.size.height as i32,
format_desc.external,
format_desc.data_type,
i,
);
},
wgt::ExternalImageSource::HTMLCanvasElement(ref c) => unsafe {
gl.tex_sub_image_2d_with_html_canvas_and_width_and_height(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
copy.size.width as i32,
copy.size.height as i32,
format_desc.external,
format_desc.data_type,
c,
)
},
wgt::ExternalImageSource::OffscreenCanvas(_) => unreachable!(),
}
}
unsafe {
if src.flip_y {
gl.pixel_store_bool(UNPACK_FLIP_Y_WEBGL, false);
}
if dst_premultiplication {
gl.pixel_store_bool(UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
}
}
}
C::CopyTextureToTexture {
src,
src_target,
dst,
dst_target,
ref copy,
} => {
//TODO: handle 3D copies
unsafe { gl.bind_framebuffer(glow::READ_FRAMEBUFFER, Some(self.copy_fbo)) };
if is_layered_target(src_target) {
//TODO: handle GLES without framebuffer_texture_3d
unsafe {
gl.framebuffer_texture_layer(
glow::READ_FRAMEBUFFER,
glow::COLOR_ATTACHMENT0,
Some(src),
copy.src_base.mip_level as i32,
copy.src_base.array_layer as i32,
)
};
} else {
unsafe {
gl.framebuffer_texture_2d(
glow::READ_FRAMEBUFFER,
glow::COLOR_ATTACHMENT0,
src_target,
Some(src),
copy.src_base.mip_level as i32,
)
};
}
unsafe { gl.bind_texture(dst_target, Some(dst)) };
if is_layered_target(dst_target) {
unsafe {
gl.copy_tex_sub_image_3d(
dst_target,
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
get_z_offset(dst_target, ©.dst_base) as i32,
copy.src_base.origin.x as i32,
copy.src_base.origin.y as i32,
copy.size.width as i32,
copy.size.height as i32,
)
};
} else {
unsafe {
gl.copy_tex_sub_image_2d(
get_2d_target(dst_target, copy.dst_base.array_layer),
copy.dst_base.mip_level as i32,
copy.dst_base.origin.x as i32,
copy.dst_base.origin.y as i32,
copy.src_base.origin.x as i32,
copy.src_base.origin.y as i32,
copy.size.width as i32,
copy.size.height as i32,
)
};
}
}
C::CopyBufferToTexture {
ref src,
src_target: _,
dst,
dst_target,
dst_format,
ref copy,
} => {
let (block_width, block_height) = dst_format.block_dimensions();
let block_size = dst_format.block_copy_size(None).unwrap();
let format_desc = self.shared.describe_texture_format(dst_format);
let row_texels = copy
.buffer_layout
.bytes_per_row
.map_or(0, |bpr| block_width * bpr / block_size);
let column_texels = copy
.buffer_layout
.rows_per_image
.map_or(0, |rpi| block_height * rpi);
unsafe { gl.bind_texture(dst_target, Some(dst)) };
unsafe { gl.pixel_store_i32(glow::UNPACK_ROW_LENGTH, row_texels as i32) };
unsafe { gl.pixel_store_i32(glow::UNPACK_IMAGE_HEIGHT, column_texels as i32) };
let mut unbind_unpack_buffer = false;
if !dst_format.is_compressed() {
let buffer_data;
let unpack_data = match src.raw {
Some(buffer) => {
unsafe { gl.bind_buffer(glow::PIXEL_UNPACK_BUFFER, Some(buffer)) };
unbind_unpack_buffer = true;
glow::PixelUnpackData::BufferOffset(copy.buffer_layout.offset as u32)
}
None => {
buffer_data = src.data.as_ref().unwrap().lock().unwrap();
let src_data =
&buffer_data.as_slice()[copy.buffer_layout.offset as usize..];
glow::PixelUnpackData::Slice(src_data)
}
};
if is_layered_target(dst_target) {
unsafe {
gl.tex_sub_image_3d(
dst_target,
copy.texture_base.mip_level as i32,
copy.texture_base.origin.x as i32,
copy.texture_base.origin.y as i32,
get_z_offset(dst_target, ©.texture_base) as i32,
copy.size.width as i32,
copy.size.height as i32,
copy.size.depth as i32,
format_desc.external,
format_desc.data_type,
unpack_data,
)
};
} else {
unsafe {
gl.tex_sub_image_2d(
get_2d_target(dst_target, copy.texture_base.array_layer),
copy.texture_base.mip_level as i32,
copy.texture_base.origin.x as i32,
copy.texture_base.origin.y as i32,
copy.size.width as i32,
copy.size.height as i32,
format_desc.external,
format_desc.data_type,
unpack_data,
)
};
}
} else {
let bytes_per_row = copy
.buffer_layout
.bytes_per_row
.unwrap_or(copy.size.width * block_size);
let minimum_rows_per_image =
(copy.size.height + block_height - 1) / block_height;
let rows_per_image = copy
.buffer_layout
.rows_per_image
.unwrap_or(minimum_rows_per_image);
let bytes_per_image = bytes_per_row * rows_per_image;
let minimum_bytes_per_image = bytes_per_row * minimum_rows_per_image;
let bytes_in_upload =
(bytes_per_image * (copy.size.depth - 1)) + minimum_bytes_per_image;
let offset = copy.buffer_layout.offset as u32;
let buffer_data;
let unpack_data = match src.raw {
Some(buffer) => {
unsafe { gl.bind_buffer(glow::PIXEL_UNPACK_BUFFER, Some(buffer)) };
unbind_unpack_buffer = true;
glow::CompressedPixelUnpackData::BufferRange(
offset..offset + bytes_in_upload,
)
}
None => {
buffer_data = src.data.as_ref().unwrap().lock().unwrap();
let src_data = &buffer_data.as_slice()
[(offset as usize)..(offset + bytes_in_upload) as usize];
glow::CompressedPixelUnpackData::Slice(src_data)
}
};
if is_layered_target(dst_target) {
unsafe {
gl.compressed_tex_sub_image_3d(
dst_target,
copy.texture_base.mip_level as i32,
copy.texture_base.origin.x as i32,
copy.texture_base.origin.y as i32,
get_z_offset(dst_target, ©.texture_base) as i32,
copy.size.width as i32,
copy.size.height as i32,
copy.size.depth as i32,
format_desc.internal,
unpack_data,
)
};
} else {
unsafe {
gl.compressed_tex_sub_image_2d(
get_2d_target(dst_target, copy.texture_base.array_layer),
copy.texture_base.mip_level as i32,
copy.texture_base.origin.x as i32,
copy.texture_base.origin.y as i32,
copy.size.width as i32,
copy.size.height as i32,
format_desc.internal,
unpack_data,
)
};
}
}
if unbind_unpack_buffer {
unsafe { gl.bind_buffer(glow::PIXEL_UNPACK_BUFFER, None) };
}
}
C::CopyTextureToBuffer {
src,
src_target,
src_format,
ref dst,
dst_target: _,
ref copy,
} => {
let block_size = src_format.block_copy_size(None).unwrap();
if src_format.is_compressed() {
log::error!("Not implemented yet: compressed texture copy to buffer");
return;
}
if src_target == glow::TEXTURE_CUBE_MAP
|| src_target == glow::TEXTURE_CUBE_MAP_ARRAY
{
log::error!("Not implemented yet: cubemap texture copy to buffer");
return;
}
let format_desc = self.shared.describe_texture_format(src_format);
let row_texels = copy
.buffer_layout
.bytes_per_row
.map_or(copy.size.width, |bpr| bpr / block_size);
let column_texels = copy
.buffer_layout
.rows_per_image
.unwrap_or(copy.size.height);
unsafe { gl.bind_framebuffer(glow::READ_FRAMEBUFFER, Some(self.copy_fbo)) };
let read_pixels = |offset| {
let mut buffer_data;
let unpack_data = match dst.raw {
Some(buffer) => {
unsafe { gl.pixel_store_i32(glow::PACK_ROW_LENGTH, row_texels as i32) };
unsafe { gl.bind_buffer(glow::PIXEL_PACK_BUFFER, Some(buffer)) };
glow::PixelPackData::BufferOffset(offset as u32)
}
None => {
buffer_data = dst.data.as_ref().unwrap().lock().unwrap();
let dst_data = &mut buffer_data.as_mut_slice()[offset as usize..];
glow::PixelPackData::Slice(dst_data)
}
};
unsafe {
gl.read_pixels(
copy.texture_base.origin.x as i32,
copy.texture_base.origin.y as i32,
copy.size.width as i32,
copy.size.height as i32,
format_desc.external,
format_desc.data_type,
unpack_data,
)
};
};
match src_target {
glow::TEXTURE_2D => {
unsafe {
gl.framebuffer_texture_2d(
glow::READ_FRAMEBUFFER,
glow::COLOR_ATTACHMENT0,
src_target,
Some(src),
copy.texture_base.mip_level as i32,
)
};
read_pixels(copy.buffer_layout.offset);
}
glow::TEXTURE_2D_ARRAY => {
unsafe {
gl.framebuffer_texture_layer(
glow::READ_FRAMEBUFFER,
glow::COLOR_ATTACHMENT0,
Some(src),
copy.texture_base.mip_level as i32,
copy.texture_base.array_layer as i32,
)
};
read_pixels(copy.buffer_layout.offset);
}
glow::TEXTURE_3D => {
for z in copy.texture_base.origin.z..copy.size.depth {
unsafe {
gl.framebuffer_texture_layer(
glow::READ_FRAMEBUFFER,
glow::COLOR_ATTACHMENT0,
Some(src),
copy.texture_base.mip_level as i32,
z as i32,
)
};
let offset = copy.buffer_layout.offset
+ (z * block_size * row_texels * column_texels) as u64;
read_pixels(offset);
}
}
glow::TEXTURE_CUBE_MAP | glow::TEXTURE_CUBE_MAP_ARRAY => unimplemented!(),
_ => unreachable!(),
}
}
C::SetIndexBuffer(buffer) => {
unsafe { gl.bind_buffer(glow::ELEMENT_ARRAY_BUFFER, Some(buffer)) };
let mut current_index_buffer = self.current_index_buffer.lock();
*current_index_buffer = Some(buffer);
}
C::BeginQuery(query, target) => {
unsafe { gl.begin_query(target, query) };
}
C::EndQuery(target) => {
unsafe { gl.end_query(target) };
}
C::TimestampQuery(query) => {
unsafe { gl.query_counter(query, glow::TIMESTAMP) };
}
C::CopyQueryResults {
ref query_range,
ref dst,
dst_target,
dst_offset,
} => {
if self
.shared
.private_caps
.contains(PrivateCapabilities::QUERY_BUFFERS)
&& dst.raw.is_some()
{
unsafe {
// We're assuming that the only relevant queries are 8 byte timestamps or
// occlusion tests.
let query_size = 8;
let query_range_size = query_size * query_range.len();
let buffer = gl.create_buffer().ok();
gl.bind_buffer(glow::QUERY_BUFFER, buffer);
gl.buffer_data_size(
glow::QUERY_BUFFER,
query_range_size as _,
glow::STREAM_COPY,
);
for (i, &query) in queries
[query_range.start as usize..query_range.end as usize]
.iter()
.enumerate()
{
gl.get_query_parameter_u64_with_offset(
query,
glow::QUERY_RESULT,
query_size * i,
)
}
gl.bind_buffer(dst_target, dst.raw);
gl.copy_buffer_sub_data(
glow::QUERY_BUFFER,
dst_target,
0,
dst_offset as _,
query_range_size as _,
);
if let Some(buffer) = buffer {
gl.delete_buffer(buffer)
}
}
} else {
let mut temp_query_results = self.temp_query_results.lock();
temp_query_results.clear();
for &query in
queries[query_range.start as usize..query_range.end as usize].iter()
{
let mut result: u64 = 0;
unsafe {
if self
.shared
.private_caps
.contains(PrivateCapabilities::QUERY_64BIT)
{
let result: *mut u64 = &mut result;
gl.get_query_parameter_u64_with_offset(
query,
glow::QUERY_RESULT,
result as usize,
)
} else {
result =
gl.get_query_parameter_u32(query, glow::QUERY_RESULT) as u64;
}
};
temp_query_results.push(result);
}
let query_data = unsafe {
slice::from_raw_parts(
temp_query_results.as_ptr().cast::<u8>(),
temp_query_results.len() * size_of::<u64>(),
)
};
match dst.raw {
Some(buffer) => {
unsafe { gl.bind_buffer(dst_target, Some(buffer)) };
unsafe {
gl.buffer_sub_data_u8_slice(
dst_target,
dst_offset as i32,
query_data,
)
};
}
None => {
let data = &mut dst.data.as_ref().unwrap().lock().unwrap();
let len = query_data.len().min(data.len());
data[..len].copy_from_slice(&query_data[..len]);
}
}
}
}
C::ResetFramebuffer { is_default } => {
if is_default {
unsafe { gl.bind_framebuffer(glow::DRAW_FRAMEBUFFER, None) };
} else {
unsafe { gl.bind_framebuffer(glow::DRAW_FRAMEBUFFER, Some(self.draw_fbo)) };
unsafe {
gl.framebuffer_texture_2d(
glow::DRAW_FRAMEBUFFER,
glow::DEPTH_STENCIL_ATTACHMENT,
glow::TEXTURE_2D,
None,
0,
)
};
for i in 0..crate::MAX_COLOR_ATTACHMENTS {
let target = glow::COLOR_ATTACHMENT0 + i as u32;
unsafe {
gl.framebuffer_texture_2d(
glow::DRAW_FRAMEBUFFER,
target,
glow::TEXTURE_2D,
None,
0,
)
};
}
}
unsafe { gl.color_mask(true, true, true, true) };
unsafe { gl.depth_mask(true) };
unsafe { gl.stencil_mask(!0) };
unsafe { gl.disable(glow::DEPTH_TEST) };
unsafe { gl.disable(glow::STENCIL_TEST) };
unsafe { gl.disable(glow::SCISSOR_TEST) };
}
C::BindAttachment {
attachment,
ref view,
} => {
unsafe { self.set_attachment(gl, glow::DRAW_FRAMEBUFFER, attachment, view) };
}
C::ResolveAttachment {
attachment,
ref dst,
ref size,
} => {
unsafe { gl.bind_framebuffer(glow::READ_FRAMEBUFFER, Some(self.draw_fbo)) };
unsafe { gl.read_buffer(attachment) };
unsafe { gl.bind_framebuffer(glow::DRAW_FRAMEBUFFER, Some(self.copy_fbo)) };
unsafe {
self.set_attachment(gl, glow::DRAW_FRAMEBUFFER, glow::COLOR_ATTACHMENT0, dst)
};
unsafe {
gl.blit_framebuffer(
0,
0,
size.width as i32,
size.height as i32,
0,
0,
size.width as i32,
size.height as i32,
glow::COLOR_BUFFER_BIT,
glow::NEAREST,
)
};
unsafe { gl.bind_framebuffer(glow::READ_FRAMEBUFFER, None) };
unsafe { gl.bind_framebuffer(glow::DRAW_FRAMEBUFFER, Some(self.draw_fbo)) };
}
C::InvalidateAttachments(ref list) => {
if self
.shared
.private_caps
.contains(PrivateCapabilities::INVALIDATE_FRAMEBUFFER)
{
unsafe { gl.invalidate_framebuffer(glow::DRAW_FRAMEBUFFER, list) };
}
}
C::SetDrawColorBuffers(count) => {
self.draw_buffer_count.store(count, Ordering::Relaxed);
let indices = (0..count as u32)
.map(|i| glow::COLOR_ATTACHMENT0 + i)
.collect::<ArrayVec<_, { crate::MAX_COLOR_ATTACHMENTS }>>();
unsafe { gl.draw_buffers(&indices) };
}
C::ClearColorF {
draw_buffer,
ref color,
is_srgb,
} => {
if self
.shared
.workarounds
.contains(super::Workarounds::MESA_I915_SRGB_SHADER_CLEAR)
&& is_srgb
{
unsafe { self.perform_shader_clear(gl, draw_buffer, *color) };
} else {
unsafe { gl.clear_buffer_f32_slice(glow::COLOR, draw_buffer, color) };
}
}
C::ClearColorU(draw_buffer, ref color) => {
unsafe { gl.clear_buffer_u32_slice(glow::COLOR, draw_buffer, color) };
}
C::ClearColorI(draw_buffer, ref color) => {
unsafe { gl.clear_buffer_i32_slice(glow::COLOR, draw_buffer, color) };
}
C::ClearDepth(depth) => {
// Prefer `clear` as `clear_buffer` functions have issues on Sandy Bridge
// on Windows.
unsafe {
gl.clear_depth_f32(depth);
gl.clear(glow::DEPTH_BUFFER_BIT);
}
}
C::ClearStencil(value) => {
// Prefer `clear` as `clear_buffer` functions have issues on Sandy Bridge
// on Windows.
unsafe {
gl.clear_stencil(value as i32);
gl.clear(glow::STENCIL_BUFFER_BIT);
}
}
C::ClearDepthAndStencil(depth, stencil_value) => {
// Prefer `clear` as `clear_buffer` functions have issues on Sandy Bridge
// on Windows.
unsafe {
gl.clear_depth_f32(depth);
gl.clear_stencil(stencil_value as i32);
gl.clear(glow::DEPTH_BUFFER_BIT | glow::STENCIL_BUFFER_BIT);
}
}
C::BufferBarrier(raw, usage) => {
let mut flags = 0;
if usage.contains(crate::BufferUses::VERTEX) {
flags |= glow::VERTEX_ATTRIB_ARRAY_BARRIER_BIT;
unsafe { gl.bind_buffer(glow::ARRAY_BUFFER, Some(raw)) };
unsafe { gl.vertex_attrib_pointer_f32(0, 1, glow::BYTE, true, 0, 0) };
}
if usage.contains(crate::BufferUses::INDEX) {
flags |= glow::ELEMENT_ARRAY_BARRIER_BIT;
unsafe { gl.bind_buffer(glow::ELEMENT_ARRAY_BUFFER, Some(raw)) };
}
if usage.contains(crate::BufferUses::UNIFORM) {
flags |= glow::UNIFORM_BARRIER_BIT;
}
if usage.contains(crate::BufferUses::INDIRECT) {
flags |= glow::COMMAND_BARRIER_BIT;
unsafe { gl.bind_buffer(glow::DRAW_INDIRECT_BUFFER, Some(raw)) };
}
if usage.contains(crate::BufferUses::COPY_SRC) {
flags |= glow::PIXEL_BUFFER_BARRIER_BIT;
unsafe { gl.bind_buffer(glow::PIXEL_UNPACK_BUFFER, Some(raw)) };
}
if usage.contains(crate::BufferUses::COPY_DST) {
flags |= glow::PIXEL_BUFFER_BARRIER_BIT;
unsafe { gl.bind_buffer(glow::PIXEL_PACK_BUFFER, Some(raw)) };
}
if usage.intersects(crate::BufferUses::MAP_READ | crate::BufferUses::MAP_WRITE) {
flags |= glow::BUFFER_UPDATE_BARRIER_BIT;
}
if usage.intersects(
crate::BufferUses::STORAGE_READ | crate::BufferUses::STORAGE_READ_WRITE,
) {
flags |= glow::SHADER_STORAGE_BARRIER_BIT;
}
unsafe { gl.memory_barrier(flags) };
}
C::TextureBarrier(usage) => {
let mut flags = 0;
if usage.contains(crate::TextureUses::RESOURCE) {
flags |= glow::TEXTURE_FETCH_BARRIER_BIT;
}
if usage.intersects(
crate::TextureUses::STORAGE_READ | crate::TextureUses::STORAGE_READ_WRITE,
) {
flags |= glow::SHADER_IMAGE_ACCESS_BARRIER_BIT;
}
if usage.contains(crate::TextureUses::COPY_DST) {
flags |= glow::TEXTURE_UPDATE_BARRIER_BIT;
}
if usage.intersects(
crate::TextureUses::COLOR_TARGET
| crate::TextureUses::DEPTH_STENCIL_READ
| crate::TextureUses::DEPTH_STENCIL_WRITE,
) {
flags |= glow::FRAMEBUFFER_BARRIER_BIT;
}
unsafe { gl.memory_barrier(flags) };
}
C::SetViewport {
ref rect,
ref depth,
} => {
unsafe { gl.viewport(rect.x, rect.y, rect.w, rect.h) };
unsafe { gl.depth_range_f32(depth.start, depth.end) };
}
C::SetScissor(ref rect) => {
unsafe { gl.scissor(rect.x, rect.y, rect.w, rect.h) };
unsafe { gl.enable(glow::SCISSOR_TEST) };
}
C::SetStencilFunc {
face,
function,
reference,
read_mask,
} => {
unsafe { gl.stencil_func_separate(face, function, reference as i32, read_mask) };
}
C::SetStencilOps {
face,
write_mask,
ref ops,
} => {
unsafe { gl.stencil_mask_separate(face, write_mask) };
unsafe { gl.stencil_op_separate(face, ops.fail, ops.depth_fail, ops.pass) };
}
C::SetVertexAttribute {
buffer,
ref buffer_desc,
attribute_desc: ref vat,
} => {
unsafe { gl.bind_buffer(glow::ARRAY_BUFFER, buffer) };
unsafe { gl.enable_vertex_attrib_array(vat.location) };
if buffer.is_none() {
match vat.format_desc.attrib_kind {
super::VertexAttribKind::Float => unsafe {
gl.vertex_attrib_format_f32(
vat.location,
vat.format_desc.element_count,
vat.format_desc.element_format,
true, // always normalized
vat.offset,
)
},
super::VertexAttribKind::Integer => unsafe {
gl.vertex_attrib_format_i32(
vat.location,
vat.format_desc.element_count,
vat.format_desc.element_format,
vat.offset,
)
},
}
//Note: there is apparently a bug on AMD 3500U:
// this call is ignored if the current array is disabled.
unsafe { gl.vertex_attrib_binding(vat.location, vat.buffer_index) };
} else {
match vat.format_desc.attrib_kind {
super::VertexAttribKind::Float => unsafe {
gl.vertex_attrib_pointer_f32(
vat.location,
vat.format_desc.element_count,
vat.format_desc.element_format,
true, // always normalized
buffer_desc.stride as i32,
vat.offset as i32,
)
},
super::VertexAttribKind::Integer => unsafe {
gl.vertex_attrib_pointer_i32(
vat.location,
vat.format_desc.element_count,
vat.format_desc.element_format,
buffer_desc.stride as i32,
vat.offset as i32,
)
},
}
unsafe { gl.vertex_attrib_divisor(vat.location, buffer_desc.step as u32) };
}
}
C::UnsetVertexAttribute(location) => {
unsafe { gl.disable_vertex_attrib_array(location) };
}
C::SetVertexBuffer {
index,
ref buffer,
ref buffer_desc,
} => {
unsafe { gl.vertex_binding_divisor(index, buffer_desc.step as u32) };
unsafe {
gl.bind_vertex_buffer(
index,
Some(buffer.raw),
buffer.offset as i32,
buffer_desc.stride as i32,
)
};
}
C::SetDepth(ref depth) => {
unsafe { gl.depth_func(depth.function) };
unsafe { gl.depth_mask(depth.mask) };
}
C::SetDepthBias(bias) => {
if bias.is_enabled() {
unsafe { gl.enable(glow::POLYGON_OFFSET_FILL) };
unsafe { gl.polygon_offset(bias.slope_scale, bias.constant as f32) };
} else {
unsafe { gl.disable(glow::POLYGON_OFFSET_FILL) };
}
}
C::ConfigureDepthStencil(aspects) => {
if aspects.contains(crate::FormatAspects::DEPTH) {
unsafe { gl.enable(glow::DEPTH_TEST) };
} else {
unsafe { gl.disable(glow::DEPTH_TEST) };
}
if aspects.contains(crate::FormatAspects::STENCIL) {
unsafe { gl.enable(glow::STENCIL_TEST) };
} else {
unsafe { gl.disable(glow::STENCIL_TEST) };
}
}
C::SetAlphaToCoverage(enabled) => {
if enabled {
unsafe { gl.enable(glow::SAMPLE_ALPHA_TO_COVERAGE) };
} else {
unsafe { gl.disable(glow::SAMPLE_ALPHA_TO_COVERAGE) };
}
}
C::SetProgram(program) => {
unsafe { gl.use_program(Some(program)) };
}
C::SetPrimitive(ref state) => {
unsafe { gl.front_face(state.front_face) };
if state.cull_face != 0 {
unsafe { gl.enable(glow::CULL_FACE) };
unsafe { gl.cull_face(state.cull_face) };
} else {
unsafe { gl.disable(glow::CULL_FACE) };
}
if self.features.contains(wgt::Features::DEPTH_CLIP_CONTROL) {
//Note: this is a bit tricky, since we are controlling the clip, not the clamp.
if state.unclipped_depth {
unsafe { gl.enable(glow::DEPTH_CLAMP) };
} else {
unsafe { gl.disable(glow::DEPTH_CLAMP) };
}
}
// POLYGON_MODE_LINE also implies POLYGON_MODE_POINT
if self.features.contains(wgt::Features::POLYGON_MODE_LINE) {
unsafe { gl.polygon_mode(glow::FRONT_AND_BACK, state.polygon_mode) };
}
}
C::SetBlendConstant(c) => {
unsafe { gl.blend_color(c[0], c[1], c[2], c[3]) };
}
C::SetColorTarget {
draw_buffer_index,
desc: super::ColorTargetDesc { mask, ref blend },
} => {
use wgt::ColorWrites as Cw;
if let Some(index) = draw_buffer_index {
unsafe {
gl.color_mask_draw_buffer(
index,
mask.contains(Cw::RED),
mask.contains(Cw::GREEN),
mask.contains(Cw::BLUE),
mask.contains(Cw::ALPHA),
)
};
if let Some(ref blend) = *blend {
unsafe { gl.enable_draw_buffer(glow::BLEND, index) };
if blend.color != blend.alpha {
unsafe {
gl.blend_equation_separate_draw_buffer(
index,
blend.color.equation,
blend.alpha.equation,
)
};
unsafe {
gl.blend_func_separate_draw_buffer(
index,
blend.color.src,
blend.color.dst,
blend.alpha.src,
blend.alpha.dst,
)
};
} else {
unsafe { gl.blend_equation_draw_buffer(index, blend.color.equation) };
unsafe {
gl.blend_func_draw_buffer(index, blend.color.src, blend.color.dst)
};
}
} else {
unsafe { gl.disable_draw_buffer(glow::BLEND, index) };
}
} else {
unsafe {
gl.color_mask(
mask.contains(Cw::RED),
mask.contains(Cw::GREEN),
mask.contains(Cw::BLUE),
mask.contains(Cw::ALPHA),
)
};
if let Some(ref blend) = *blend {
unsafe { gl.enable(glow::BLEND) };
if blend.color != blend.alpha {
unsafe {
gl.blend_equation_separate(
blend.color.equation,
blend.alpha.equation,
)
};
unsafe {
gl.blend_func_separate(
blend.color.src,
blend.color.dst,
blend.alpha.src,
blend.alpha.dst,
)
};
} else {
unsafe { gl.blend_equation(blend.color.equation) };
unsafe { gl.blend_func(blend.color.src, blend.color.dst) };
}
} else {
unsafe { gl.disable(glow::BLEND) };
}
}
}
C::BindBuffer {
target,
slot,
buffer,
offset,
size,
} => {
unsafe { gl.bind_buffer_range(target, slot, Some(buffer), offset, size) };
}
C::BindSampler(texture_index, sampler) => {
unsafe { gl.bind_sampler(texture_index, sampler) };
}
C::BindTexture {
slot,
texture,
target,
aspects,
ref mip_levels,
} => {
unsafe { gl.active_texture(glow::TEXTURE0 + slot) };
unsafe { gl.bind_texture(target, Some(texture)) };
unsafe {
gl.tex_parameter_i32(target, glow::TEXTURE_BASE_LEVEL, mip_levels.start as i32)
};
unsafe {
gl.tex_parameter_i32(
target,
glow::TEXTURE_MAX_LEVEL,
(mip_levels.end - 1) as i32,
)
};
let version = gl.version();
let is_min_es_3_1 = version.is_embedded && (version.major, version.minor) >= (3, 1);
let is_min_4_3 = !version.is_embedded && (version.major, version.minor) >= (4, 3);
if is_min_es_3_1 || is_min_4_3 {
let mode = match aspects {
crate::FormatAspects::DEPTH => Some(glow::DEPTH_COMPONENT),
crate::FormatAspects::STENCIL => Some(glow::STENCIL_INDEX),
_ => None,
};
if let Some(mode) = mode {
unsafe {
gl.tex_parameter_i32(
target,
glow::DEPTH_STENCIL_TEXTURE_MODE,
mode as _,
)
};
}
}
}
C::BindImage { slot, ref binding } => {
unsafe {
gl.bind_image_texture(
slot,
binding.raw,
binding.mip_level as i32,
binding.array_layer.is_none(),
binding.array_layer.unwrap_or_default() as i32,
binding.access,
binding.format,
)
};
}
C::InsertDebugMarker(ref range) => {
let marker = extract_marker(data_bytes, range);
unsafe {
if self
.shared
.private_caps
.contains(PrivateCapabilities::DEBUG_FNS)
{
gl.debug_message_insert(
glow::DEBUG_SOURCE_APPLICATION,
glow::DEBUG_TYPE_MARKER,
DEBUG_ID,
glow::DEBUG_SEVERITY_NOTIFICATION,
marker,
)
}
};
}
C::PushDebugGroup(ref range) => {
let marker = extract_marker(data_bytes, range);
unsafe {
if self
.shared
.private_caps
.contains(PrivateCapabilities::DEBUG_FNS)
{
gl.push_debug_group(glow::DEBUG_SOURCE_APPLICATION, DEBUG_ID, marker)
}
};
}
C::PopDebugGroup => {
unsafe {
if self
.shared
.private_caps
.contains(PrivateCapabilities::DEBUG_FNS)
{
gl.pop_debug_group()
}
};
}
C::SetPushConstants {
ref uniform,
offset,
} => {
fn get_data<T, const COUNT: usize>(data: &[u8], offset: u32) -> [T; COUNT]
where
[T; COUNT]: bytemuck::AnyBitPattern,
{
let data_required = size_of::<T>() * COUNT;
let raw = &data[(offset as usize)..][..data_required];
bytemuck::pod_read_unaligned(raw)
}
let location = Some(&uniform.location);
match uniform.ty {
//
// --- Float 1-4 Component ---
//
naga::TypeInner::Scalar(naga::Scalar::F32) => {
let data = get_data::<f32, 1>(data_bytes, offset)[0];
unsafe { gl.uniform_1_f32(location, data) };
}
naga::TypeInner::Vector {
size: naga::VectorSize::Bi,
scalar: naga::Scalar::F32,
} => {
let data = &get_data::<f32, 2>(data_bytes, offset);
unsafe { gl.uniform_2_f32_slice(location, data) };
}
naga::TypeInner::Vector {
size: naga::VectorSize::Tri,
scalar: naga::Scalar::F32,
} => {
let data = &get_data::<f32, 3>(data_bytes, offset);
unsafe { gl.uniform_3_f32_slice(location, data) };
}
naga::TypeInner::Vector {
size: naga::VectorSize::Quad,
scalar: naga::Scalar::F32,
} => {
let data = &get_data::<f32, 4>(data_bytes, offset);
unsafe { gl.uniform_4_f32_slice(location, data) };
}
//
// --- Int 1-4 Component ---
//
naga::TypeInner::Scalar(naga::Scalar::I32) => {
let data = get_data::<i32, 1>(data_bytes, offset)[0];
unsafe { gl.uniform_1_i32(location, data) };
}
naga::TypeInner::Vector {
size: naga::VectorSize::Bi,
scalar: naga::Scalar::I32,
} => {
let data = &get_data::<i32, 2>(data_bytes, offset);
unsafe { gl.uniform_2_i32_slice(location, data) };
}
naga::TypeInner::Vector {
size: naga::VectorSize::Tri,
scalar: naga::Scalar::I32,
} => {
let data = &get_data::<i32, 3>(data_bytes, offset);
unsafe { gl.uniform_3_i32_slice(location, data) };
}
naga::TypeInner::Vector {
size: naga::VectorSize::Quad,
scalar: naga::Scalar::I32,
} => {
let data = &get_data::<i32, 4>(data_bytes, offset);
unsafe { gl.uniform_4_i32_slice(location, data) };
}
//
// --- Uint 1-4 Component ---
//
naga::TypeInner::Scalar(naga::Scalar::U32) => {
let data = get_data::<u32, 1>(data_bytes, offset)[0];
unsafe { gl.uniform_1_u32(location, data) };
}
naga::TypeInner::Vector {
size: naga::VectorSize::Bi,
scalar: naga::Scalar::U32,
} => {
let data = &get_data::<u32, 2>(data_bytes, offset);
unsafe { gl.uniform_2_u32_slice(location, data) };
}
naga::TypeInner::Vector {
size: naga::VectorSize::Tri,
scalar: naga::Scalar::U32,
} => {
let data = &get_data::<u32, 3>(data_bytes, offset);
unsafe { gl.uniform_3_u32_slice(location, data) };
}
naga::TypeInner::Vector {
size: naga::VectorSize::Quad,
scalar: naga::Scalar::U32,
} => {
let data = &get_data::<u32, 4>(data_bytes, offset);
unsafe { gl.uniform_4_u32_slice(location, data) };
}
//
// --- Matrix 2xR ---
//
naga::TypeInner::Matrix {
columns: naga::VectorSize::Bi,
rows: naga::VectorSize::Bi,
scalar: naga::Scalar::F32,
} => {
let data = &get_data::<f32, 4>(data_bytes, offset);
unsafe { gl.uniform_matrix_2_f32_slice(location, false, data) };
}
naga::TypeInner::Matrix {
columns: naga::VectorSize::Bi,
rows: naga::VectorSize::Tri,
scalar: naga::Scalar::F32,
} => {
// repack 2 vec3s into 6 values.
let unpacked_data = &get_data::<f32, 8>(data_bytes, offset);
#[rustfmt::skip]
let packed_data = [
unpacked_data[0], unpacked_data[1], unpacked_data[2],
unpacked_data[4], unpacked_data[5], unpacked_data[6],
];
unsafe { gl.uniform_matrix_2x3_f32_slice(location, false, &packed_data) };
}
naga::TypeInner::Matrix {
columns: naga::VectorSize::Bi,
rows: naga::VectorSize::Quad,
scalar: naga::Scalar::F32,
} => {
let data = &get_data::<f32, 8>(data_bytes, offset);
unsafe { gl.uniform_matrix_2x4_f32_slice(location, false, data) };
}
//
// --- Matrix 3xR ---
//
naga::TypeInner::Matrix {
columns: naga::VectorSize::Tri,
rows: naga::VectorSize::Bi,
scalar: naga::Scalar::F32,
} => {
let data = &get_data::<f32, 6>(data_bytes, offset);
unsafe { gl.uniform_matrix_3x2_f32_slice(location, false, data) };
}
naga::TypeInner::Matrix {
columns: naga::VectorSize::Tri,
rows: naga::VectorSize::Tri,
scalar: naga::Scalar::F32,
} => {
// repack 3 vec3s into 9 values.
let unpacked_data = &get_data::<f32, 12>(data_bytes, offset);
#[rustfmt::skip]
let packed_data = [
unpacked_data[0], unpacked_data[1], unpacked_data[2],
unpacked_data[4], unpacked_data[5], unpacked_data[6],
unpacked_data[8], unpacked_data[9], unpacked_data[10],
];
unsafe { gl.uniform_matrix_3_f32_slice(location, false, &packed_data) };
}
naga::TypeInner::Matrix {
columns: naga::VectorSize::Tri,
rows: naga::VectorSize::Quad,
scalar: naga::Scalar::F32,
} => {
let data = &get_data::<f32, 12>(data_bytes, offset);
unsafe { gl.uniform_matrix_3x4_f32_slice(location, false, data) };
}
//
// --- Matrix 4xR ---
//
naga::TypeInner::Matrix {
columns: naga::VectorSize::Quad,
rows: naga::VectorSize::Bi,
scalar: naga::Scalar::F32,
} => {
let data = &get_data::<f32, 8>(data_bytes, offset);
unsafe { gl.uniform_matrix_4x2_f32_slice(location, false, data) };
}
naga::TypeInner::Matrix {
columns: naga::VectorSize::Quad,
rows: naga::VectorSize::Tri,
scalar: naga::Scalar::F32,
} => {
// repack 4 vec3s into 12 values.
let unpacked_data = &get_data::<f32, 16>(data_bytes, offset);
#[rustfmt::skip]
let packed_data = [
unpacked_data[0], unpacked_data[1], unpacked_data[2],
unpacked_data[4], unpacked_data[5], unpacked_data[6],
unpacked_data[8], unpacked_data[9], unpacked_data[10],
unpacked_data[12], unpacked_data[13], unpacked_data[14],
];
unsafe { gl.uniform_matrix_4x3_f32_slice(location, false, &packed_data) };
}
naga::TypeInner::Matrix {
columns: naga::VectorSize::Quad,
rows: naga::VectorSize::Quad,
scalar: naga::Scalar::F32,
} => {
let data = &get_data::<f32, 16>(data_bytes, offset);
unsafe { gl.uniform_matrix_4_f32_slice(location, false, data) };
}
_ => panic!("Unsupported uniform datatype: {:?}!", uniform.ty),
}
}
}
}
}
impl crate::Queue for super::Queue {
type A = super::Api;
unsafe fn submit(
&self,
command_buffers: &[&super::CommandBuffer],
_surface_textures: &[&super::Texture],
(signal_fence, signal_value): (&mut super::Fence, crate::FenceValue),
) -> Result<(), crate::DeviceError> {
let shared = Arc::clone(&self.shared);
let gl = &shared.context.lock();
for cmd_buf in command_buffers.iter() {
// The command encoder assumes a default state when encoding the command buffer.
// Always reset the state between command_buffers to reflect this assumption. Do
// this at the beginning of the loop in case something outside of wgpu modified
// this state prior to commit.
unsafe { self.reset_state(gl) };
if let Some(ref label) = cmd_buf.label {
if self
.shared
.private_caps
.contains(PrivateCapabilities::DEBUG_FNS)
{
unsafe { gl.push_debug_group(glow::DEBUG_SOURCE_APPLICATION, DEBUG_ID, label) };
}
}
for command in cmd_buf.commands.iter() {
unsafe { self.process(gl, command, &cmd_buf.data_bytes, &cmd_buf.queries) };
}
if cmd_buf.label.is_some()
&& self
.shared
.private_caps
.contains(PrivateCapabilities::DEBUG_FNS)
{
unsafe { gl.pop_debug_group() };
}
}
signal_fence.maintain(gl);
let sync = unsafe { gl.fence_sync(glow::SYNC_GPU_COMMANDS_COMPLETE, 0) }
.map_err(|_| crate::DeviceError::OutOfMemory)?;
signal_fence.pending.push((signal_value, sync));
Ok(())
}
unsafe fn present(
&self,
surface: &super::Surface,
texture: super::Texture,
) -> Result<(), crate::SurfaceError> {
unsafe { surface.present(texture, &self.shared.context) }
}
unsafe fn get_timestamp_period(&self) -> f32 {
1.0
}
}
#[cfg(send_sync)]
unsafe impl Sync for super::Queue {}
#[cfg(send_sync)]
unsafe impl Send for super::Queue {}