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Update RenderPass draw, draw_indexed, set_viewport and set_scissor_rect documentation (#3860)

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Andrew Wheeler(Genusis)
2023-06-17 13:11:24 -04:00
committed by GitHub
parent f9fcb54ce4
commit 2ee2e1a770
2 changed files with 77 additions and 9 deletions
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2
CHANGELOG.md
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@@ -60,6 +60,8 @@ Bottom level categories:
### Documentation
- Better documentation for draw, draw_indexed, set_viewport and set_scissor_rect. By @genusistimelord in [#3860](https://github.com/gfx-rs/wgpu/pull/3860)
#### General
- Document feature requirements for `DEPTH32FLOAT_STENCIL8` by @ErichDonGubler in [#3734](https://github.com/gfx-rs/wgpu/pull/3734).

84
wgpu/src/lib.rs
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@@ -3104,9 +3104,10 @@ impl<'a> RenderPass<'a> {
)
}
/// Sets the scissor region.
/// Sets the scissor rectangle used during the rasterization stage.
/// After transformation into [viewport coordinates](https://www.w3.org/TR/webgpu/#viewport-coordinates).
///
/// Subsequent draw calls will discard any fragments that fall outside this region.
/// Subsequent draw calls will discard any fragments which fall outside the scissor rectangle.
pub fn set_scissor_rect(&mut self, x: u32, y: u32, width: u32, height: u32) {
DynContext::render_pass_set_scissor_rect(
&*self.parent.context,
@@ -3119,7 +3120,8 @@ impl<'a> RenderPass<'a> {
);
}
/// Sets the viewport region.
/// Sets the viewport used during the rasterization stage to linearly map
/// from [normalized device coordinates](https://www.w3.org/TR/webgpu/#ndc) to [viewport coordinates](https://www.w3.org/TR/webgpu/#viewport-coordinates).
///
/// Subsequent draw calls will draw any fragments in this region.
pub fn set_viewport(&mut self, x: f32, y: f32, w: f32, h: f32, min_depth: f32, max_depth: f32) {
@@ -3150,7 +3152,22 @@ impl<'a> RenderPass<'a> {
/// Draws primitives from the active vertex buffer(s).
///
/// The active vertex buffers can be set with [`RenderPass::set_vertex_buffer`].
/// The active vertex buffer(s) can be set with [`RenderPass::set_vertex_buffer`].
/// Does not use an Index Buffer. If you need this see [`RenderPass::draw_indexed`]
///
/// Panics if vertices Range is outside of the range of the vertices range of any set vertex buffer.
///
/// vertices: The range of vertices to draw.
/// instances: Range of Instances to draw. Use 0..1 if instance buffers are not used.
/// E.g.of how its used internally
/// ```rust ignore
/// for instance_id in instance_range {
/// for vertex_id in vertex_range {
/// let vertex = vertex[vertex_id];
/// vertex_shader(vertex, vertex_id, instance_id);
/// }
/// }
/// ```
pub fn draw(&mut self, vertices: Range<u32>, instances: Range<u32>) {
DynContext::render_pass_draw(
&*self.parent.context,
@@ -3192,8 +3209,25 @@ impl<'a> RenderPass<'a> {
/// Draws indexed primitives using the active index buffer and the active vertex buffers.
///
/// The active index buffer can be set with [`RenderPass::set_index_buffer`], while the active
/// vertex buffers can be set with [`RenderPass::set_vertex_buffer`].
/// The active index buffer can be set with [`RenderPass::set_index_buffer`]
/// The active vertex buffers can be set with [`RenderPass::set_vertex_buffer`].
///
/// Panics if indices Range is outside of the range of the indices range of any set index buffer.
///
/// indices: The range of indices to draw.
/// base_vertex: value added to each index value before indexing into the vertex buffers.
/// instances: Range of Instances to draw. Use 0..1 if instance buffers are not used.
/// E.g.of how its used internally
/// ```rust ignore
/// for instance_id in instance_range {
/// for index_index in index_range {
/// let vertex_id = index_buffer[index_index];
/// let adjusted_vertex_id = vertex_id + base_vertex;
/// let vertex = vertex[adjusted_vertex_id];
/// vertex_shader(vertex, adjusted_vertex_id, instance_id);
/// }
/// }
/// ```
pub fn draw_indexed(&mut self, indices: Range<u32>, base_vertex: i32, instances: Range<u32>) {
DynContext::render_pass_draw_indexed(
&*self.parent.context,
@@ -3787,6 +3821,21 @@ impl<'a> RenderBundleEncoder<'a> {
/// Draws primitives from the active vertex buffer(s).
///
/// The active vertex buffers can be set with [`RenderBundleEncoder::set_vertex_buffer`].
/// Does not use an Index Buffer. If you need this see [`RenderBundleEncoder::draw_indexed`]
///
/// Panics if vertices Range is outside of the range of the vertices range of any set vertex buffer.
///
/// vertices: The range of vertices to draw.
/// instances: Range of Instances to draw. Use 0..1 if instance buffers are not used.
/// E.g.of how its used internally
/// ```rust ignore
/// for instance_id in instance_range {
/// for vertex_id in vertex_range {
/// let vertex = vertex[vertex_id];
/// vertex_shader(vertex, vertex_id, instance_id);
/// }
/// }
/// ```
pub fn draw(&mut self, vertices: Range<u32>, instances: Range<u32>) {
DynContext::render_bundle_encoder_draw(
&*self.parent.context,
@@ -3797,10 +3846,27 @@ impl<'a> RenderBundleEncoder<'a> {
)
}
/// Draws indexed primitives using the active index buffer and the active vertex buffers.
/// Draws indexed primitives using the active index buffer and the active vertex buffer(s).
///
/// The active index buffer can be set with [`RenderBundleEncoder::set_index_buffer`], while the active
/// vertex buffers can be set with [`RenderBundleEncoder::set_vertex_buffer`].
/// The active index buffer can be set with [`RenderBundleEncoder::set_index_buffer`].
/// The active vertex buffer(s) can be set with [`RenderBundleEncoder::set_vertex_buffer`].
///
/// Panics if indices Range is outside of the range of the indices range of any set index buffer.
///
/// indices: The range of indices to draw.
/// base_vertex: value added to each index value before indexing into the vertex buffers.
/// instances: Range of Instances to draw. Use 0..1 if instance buffers are not used.
/// E.g.of how its used internally
/// ```rust ignore
/// for instance_id in instance_range {
/// for index_index in index_range {
/// let vertex_id = index_buffer[index_index];
/// let adjusted_vertex_id = vertex_id + base_vertex;
/// let vertex = vertex[adjusted_vertex_id];
/// vertex_shader(vertex, adjusted_vertex_id, instance_id);
/// }
/// }
/// ```
pub fn draw_indexed(&mut self, indices: Range<u32>, base_vertex: i32, instances: Range<u32>) {
DynContext::render_bundle_encoder_draw_indexed(
&*self.parent.context,