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c0531c312f
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!
70 lines
2.2 KiB
GLSL
70 lines
2.2 KiB
GLSL
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#version 110
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#define SERVO_ES2
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uniform mat4 uTransform;
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uniform vec4 uOffsets[32];
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uniform vec4 uClipRects[64];
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uniform mat4 uMatrixPalette[32];
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uniform vec2 uDirection;
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uniform vec4 uBlendParams;
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uniform vec4 uFilterParams;
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uniform float uDevicePixelRatio;
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uniform vec4 uTileParams[64];
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attribute vec3 aPosition;
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attribute vec4 aPositionRect; // Width can be negative to flip horizontally (for border corners).
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attribute vec4 aColorRectTL;
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attribute vec4 aColorRectTR;
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attribute vec4 aColorRectBR;
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attribute vec4 aColorRectBL;
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attribute vec4 aColorTexCoordRectTop;
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attribute vec4 aColorTexCoordRectBottom;
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attribute vec4 aMaskTexCoordRectTop;
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attribute vec4 aMaskTexCoordRectBottom;
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attribute vec4 aBorderPosition;
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attribute vec4 aBorderRadii;
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attribute vec2 aSourceTextureSize;
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attribute vec2 aDestTextureSize;
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attribute float aBlurRadius;
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// x = matrix index; y = clip-in rect; z = clip-out rect; w = tile params index.
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//
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// A negative w value activates border corner mode. In this mode, the TR and BL colors are ignored,
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// the color of the top left corner applies to all vertices of the top left triangle, and the color
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// of the bottom right corner applies to all vertices of the bottom right triangle.
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attribute vec4 aMisc;
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varying vec2 vPosition;
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varying vec4 vColor;
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varying vec2 vColorTexCoord;
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varying vec2 vMaskTexCoord;
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varying vec4 vBorderPosition;
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varying vec4 vBorderRadii;
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varying vec2 vDestTextureSize;
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varying vec2 vSourceTextureSize;
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varying float vBlurRadius;
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varying vec4 vTileParams;
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varying vec4 vClipInRect;
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varying vec4 vClipOutRect;
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int Bottom7Bits(int value) {
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return value % 0x80;
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}
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bool IsBottomTriangle() {
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// FIXME(pcwalton): No gl_VertexID in OpenGL ES 2. We'll need some extra data.
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return false;
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}
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vec2 SnapToPixels(vec2 pos)
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{
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// Snap the vertex to pixel position to guarantee correct texture
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// sampling when using bilinear filtering.
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// TODO(gw): ES2 doesn't have round(). Do we ever get negative coords here?
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return floor(0.5 + pos * uDevicePixelRatio) / uDevicePixelRatio;
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}
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