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Auto merge of #6214 - glennw:parse-transforms, r=pcwalton

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* Add parser support for 3d transforms.
 * Change ComputedMatrix to a representation that suits interpolation.
 * Switch stacking contexts to use 4x4 matrices.

The transforms themselves are still converted to 2d and handled by azure for now, but this is a small standalone part that can be landed now to make it easier to review.

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This commit is contained in:
bors-servo 2015-06-02 19:56:17 -05:00
commit 05212b702d
9 changed files with 527 additions and 183 deletions
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10
components/gfx/paint_task.rs
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@ -12,7 +12,8 @@ use paint_context::PaintContext;
use azure::azure_hl::{SurfaceFormat, Color, DrawTarget, BackendType};
use azure::AzFloat;
use geom::matrix2d::Matrix2D;
use geom::Matrix4;
use geom::matrix::identity;
use geom::point::Point2D;
use geom::rect::Rect;
use geom::size::Size2D;
@ -621,10 +622,11 @@ impl WorkerThread {
stacking_context.overflow.origin.y.to_f32_px()));
// Apply the translation to paint the tile we want.
let matrix: Matrix2D<AzFloat> = Matrix2D::identity();
let matrix = matrix.scale(scale as AzFloat, scale as AzFloat);
let matrix: Matrix4<AzFloat> = identity();
let matrix = matrix.scale(scale as AzFloat, scale as AzFloat, 1.0);
let matrix = matrix.translate(-tile_bounds.origin.x as AzFloat,
-tile_bounds.origin.y as AzFloat);
-tile_bounds.origin.y as AzFloat,
0.0);
// Clear the buffer.
paint_context.clear();