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Minor GL optimisation.

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jules 2013-03-18 09:41:02 +00:00
parent f430fa86f6
commit b986d11291
1 changed files with 26 additions and 15 deletions
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41
modules/juce_opengl/opengl/juce_OpenGLGraphicsContext.cpp
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@ -2049,29 +2049,40 @@ public:
if (clip == nullptr || fillType.colour.isTransparent())
return;
const Rectangle<int> clipBounds (clip->getClipBounds());
const AffineTransform t (transform.getTransformWith (trans));
if (t.isSingularity())
return;
const float alpha = fillType.colour.getFloatAlpha();
if (t.isOnlyTranslation())
float px0 = 0, py0 = 0;
float px1 = (float) image.getWidth(), py1 = 0;
float px2 = 0, py2 = (float) image.getHeight();
t.transformPoints (px0, py0, px1, py1, px2, py2);
const int ix0 = (int) (px0 * 256.0f);
const int iy0 = (int) (py0 * 256.0f);
const int ix1 = (int) (px1 * 256.0f);
const int iy1 = (int) (py1 * 256.0f);
const int ix2 = (int) (px2 * 256.0f);
const int iy2 = (int) (py2 * 256.0f);
if (((ix0 | iy0 | ix1 | iy1 | ix2 | iy2) & 0xf8) == 0
&& ix0 == ix2 && iy0 == iy1)
{
int tx = (int) (t.getTranslationX() * 256.0f);
int ty = (int) (t.getTranslationY() * 256.0f);
if (((tx | ty) & 0xf8) == 0)
{
tx = ((tx + 128) >> 8);
ty = ((ty + 128) >> 8);
clip->drawImage (image, t, alpha, Rectangle<int> (tx, ty, image.getWidth(), image.getHeight()), nullptr);
return;
}
// Non-warping transform can be done as a single rectangle.
clip->drawImage (image, t, alpha,
Rectangle<int> (Point<int> (((ix0 + 128) >> 8),
((iy0 + 128) >> 8)),
Point<int> (((ix1 + 128) >> 8),
((iy2 + 128) >> 8))), nullptr);
}
if (! t.isSingularity())
else
{
Path p;
p.addRectangle (image.getBounds());
const Rectangle<int> clipBounds (clip->getClipBounds());
EdgeTable et (clipBounds, p, t);
clip->drawImage (image, t, alpha, clipBounds, &et);