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Bypass a Intel bug on scissor test affecting click on 3D objects #37

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Bypass a Intel bug on scissor test affecting click on 3D objects #37

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16 changes: 9 additions & 7 deletions src/alternativa/engine3d/core/View.as
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Expand Up @@ -803,7 +803,9 @@ package alternativa.engine3d.core {
context.setVertexBufferAt(0, null);
context.setDepthTest(true, Context3DCompareMode.LESS);
}
scissor.x = pixelIndex;
// Use a 2x multiplicator to bypass a Intel HD300 Driver Bug
// maybe related to http://helpx.adobe.com/flash-player/release-note/developer-release-notes-11_3.html
scissor.x = pixelIndex * 2;
context.setScissorRectangle(scissor);
drawSurface(context, camera, j, m0, m5, m10, m11, (pixelIndex*2/contextWidth - rayCoefficients.x), rayCoefficients.y, kZ, fragmentConst, camera.orthographic);
raysIs[pixelIndex] = i;
Expand All @@ -813,16 +815,16 @@ package alternativa.engine3d.core {
// get
var pixel:BitmapData = pixels[pixelIndex];
if (pixel == null) {
pixel = new BitmapData(pixelIndex, 1, false, 0xFF);
pixel = new BitmapData(pixelIndex * 2, 1, false, 0xFF);
pixels[pixelIndex] = pixel;
}
context.drawToBitmapData(pixel);
for (var k:int = 0; k < pixelIndex; k++) {
var color:int = pixel.getPixel(k, 0);
var red:int = (color >> 16) & 0xFF;
var green:int = (color >> 8) & 0xFF;
var blue:int = color & 0xFF;
if (blue == 0) {
var color:uint = pixel.getPixel(k * 2, 0);
var red:uint = (color >> 16) & 0xFF;
var green:uint = (color >> 8) & 0xFF;
var blue:uint = color & 0xFF;
if (blue == 0 && color > 0) {
var ind:int = raysIs[k];
var raySurfaces:Vector.<Surface> = raysSurfaces[ind];
var rayDepths:Vector.<Number> = raysDepths[ind];
Expand Down