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Merge pull request from adroitwhiz/pen-stamp-to-framebuffer

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penStamp() directly to the PenSkin's framebuffer
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DD Liu 2019-12-11 15:30:28 -05:00 • committed by GitHub
commit e12646871e
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1 changed files with 10 additions and 13 deletions

23
src/RenderWebGL.js
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@ -1542,23 +1542,20 @@ class RenderWebGL extends EventEmitter {
const skin = /** @type {PenSkin} */ this._allSkins[penSkinID];
const gl = this._gl;
twgl.bindFramebufferInfo(gl, this._queryBufferInfo);
twgl.bindFramebufferInfo(gl, skin._framebuffer);
// Limit size of viewport to the bounds around the stamp Drawable and create the projection matrix for the draw.
gl.viewport(0, 0, bounds.width, bounds.height);
gl.viewport(
(this._nativeSize[0] * 0.5) + bounds.left,
(this._nativeSize[1] * 0.5) - bounds.top,
bounds.width,
bounds.height
);
const projection = twgl.m4.ortho(bounds.left, bounds.right, bounds.top, bounds.bottom, -1, 1);
gl.clearColor(0, 0, 0, 0);
gl.clear(gl.COLOR_BUFFER_BIT);
try {
gl.disable(gl.BLEND);
this._drawThese([stampID], ShaderManager.DRAW_MODE.stamp, projection, {ignoreVisibility: true});
} finally {
gl.enable(gl.BLEND);
}
skin._drawToBuffer(this._queryBufferInfo.attachments[0], bounds.left, bounds.top);
// Draw the stamped sprite onto the PenSkin's framebuffer.
this._drawThese([stampID], ShaderManager.DRAW_MODE.stamp, projection, {ignoreVisibility: true});
skin._silhouetteDirty = true;
}
/* ******