mizchi/crater-renderer/gfx_vrt

README
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CssMutation
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CssMutationAction
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PreparedExternalCss
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PreparedVrtPage
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RenderVariant
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RenderVariantResult
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RenderedImage
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diff_rendered_paint_trees
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prepare_external_css
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prepare_vrt_page
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prepare_vrt_page_with_prepared_external_css
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render_html_batch_variants
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render_html_to_image
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render_html_to_paint_tree
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render_html_to_paint_tree_json
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render_html_to_paint_tree_with_external_css
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render_html_to_paint_tree_with_prepared_external_css
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render_paint_tree_to_image
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render_prepared_vrt_page_to_paint_tree
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render_prepared_vrt_page_to_paint_tree_json
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render_text_to_image

mizchi/crater-renderer/gfx_vrt does not have a README file

RenderedImage

pub(all) struct RenderedImage {
  width : Int
  height : Int
  pixels : Array[Int]
}

A rendered RGBA framebuffer: row-major, four 0..255 channels per pixel.

RenderedImage::pixel_at

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fn RenderedImage::pixel_at(self : RenderedImage, x : Int, y : Int) -> (Int, Int, Int, Int)

Read back a single pixel as (r, g, b, a).

RenderedImage::to_ascii

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fn RenderedImage::to_ascii(self : RenderedImage) -> String

Render the image as ASCII art for snapshotting: each pixel maps to a ramp character by brightness (light -> space, dark -> '@'). Fully transparent pixels render as a space.

render_html_to_image

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fn render_html_to_image(html : String, viewport : @mizchi/css/values.Size
Size[Double]) -> RenderedImage

Render an HTML document to an RGBA image at viewport, reusing the existing VRT HTML -> paint tree pipeline.

render_paint_tree_to_image

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fn render_paint_tree_to_image(root : @mizchi/crater-painter/paint/model.PaintNode
PaintNode, width : Int, height : Int) -> RenderedImage

Render a paint tree to an RGBA image of the given size via the software backend. The tree is expected to be laid out in the same pixel space (its root box matching the viewport).

render_text_to_image

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fn render_text_to_image(text : String, width : Int, height : Int, x? : Int, y? : Int, scale? : Int) -> RenderedImage

Render text to an RGBA image with the built-in 5x7 bitmap font (black on white) via the software backend. scale is the pixel size of each font cell. A self-contained text-to-pixels path that needs no external font.