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Add WebRender integration to Servo.

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WebRender is an experimental GPU accelerated rendering backend for Servo.

The WebRender backend can be specified by running Servo with the -w option (otherwise the default rendering backend will be used).

WebRender has many bugs, and missing features - but it is usable to browse most websites - please report any WebRender specific rendering bugs you encounter!
This commit is contained in:
Glenn Watson 2016-02-18 07:57:31 +10:00
parent f7f0eea470
commit c0531c312f
75 changed files with 2869 additions and 888 deletions
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41
resources/shaders/border.fs.glsl Normal file
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
Ellipse equation:
(x-h)^2 (y-k)^2
------- + ------- <= 1
rx^2 ry^2
*/
float Value(vec2 position) {
float outer_rx = vBorderRadii.x;
float outer_ry = vBorderRadii.y;
float outer_dx = position.x * position.x / (outer_rx * outer_rx);
float outer_dy = position.y * position.y / (outer_ry * outer_ry);
if (outer_dx + outer_dy > 1.0)
return 0.0;
float inner_rx = vBorderRadii.z;
float inner_ry = vBorderRadii.w;
if (inner_rx == 0.0 || inner_ry == 0.0)
return 1.0;
float inner_dx = position.x * position.x / (inner_rx * inner_rx);
float inner_dy = position.y * position.y / (inner_ry * inner_ry);
return inner_dx + inner_dy >= 1.0 ? 1.0 : 0.0;
}
void main(void)
{
vec2 position = vPosition - vBorderPosition.xy;
vec4 pixelBounds = vec4(floor(position.x), floor(position.y),
ceil(position.x), ceil(position.y));
float value = (Value(pixelBounds.xy) + Value(pixelBounds.zy) +
Value(pixelBounds.xw) + Value(pixelBounds.zw)) / 4.0;
SetFragColor(vec4(vColor.rgb, mix(1.0 - vColor.a, vColor.a, value)));
}