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Merge "Performance Optimization: Align texture dirty rect"

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This commit is contained in:
John Reck
2016-06-16 21:35:12 +00:00
committed by Gerrit Code Review
parent 1850851670 229cad0ab2
commit 4e6a73c16a
1 changed files with 10 additions and 4 deletions
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14
libs/hwui/font/CacheTexture.cpp
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@@ -204,15 +204,21 @@ void CacheTexture::allocatePixelBuffer() {
bool CacheTexture::upload() {
const Rect& dirtyRect = mDirtyRect;
uint32_t x = mHasUnpackRowLength ? dirtyRect.left : 0;
uint32_t y = dirtyRect.top;
uint32_t width = mHasUnpackRowLength ? dirtyRect.getWidth() : getWidth();
uint32_t height = dirtyRect.getHeight();
// align the x direction to 32 and y direction to 4 for better performance
uint32_t x = (((uint32_t)dirtyRect.left) & (~0x1F));
uint32_t y = (((uint32_t)dirtyRect.top) & (~0x3));
uint32_t r = ((((uint32_t)dirtyRect.right) + 0x1F) & (~0x1F)) - x;
uint32_t b = ((((uint32_t)dirtyRect.bottom) + 0x3) & (~0x3)) - y;
uint32_t width = (r > getWidth() ? getWidth() : r);
uint32_t height = (b > getHeight() ? getHeight() : b);
// The unpack row length only needs to be specified when a new
// texture is bound
if (mHasUnpackRowLength) {
glPixelStorei(GL_UNPACK_ROW_LENGTH, getWidth());
} else {
x = 0;
width = getWidth();
}
mPixelBuffer->upload(x, y, width, height);