diff options
| -rw-r--r-- | src/gui/painting/qdrawhelper.cpp | 72 |
1 files changed, 51 insertions, 21 deletions
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp index 979390a..b6603e4 100644 --- a/src/gui/painting/qdrawhelper.cpp +++ b/src/gui/painting/qdrawhelper.cpp @@ -4794,30 +4794,60 @@ Q_STATIC_TEMPLATE_FUNCTION void blendTiled(int count, const QSpan *spans, void * if (sy < 0) sy += image_height; - while (length) { - int l = qMin(image_width - sx, length); - if (buffer_size < l) - l = buffer_size; - - DST *dest = ((DST*)data->rasterBuffer->scanLine(spans->y)) + x; - const SRC *src = (SRC*)data->texture.scanLine(sy) + sx; - if (modeSource && coverage == 255) { + if (modeSource && coverage == 255) { + // Copy the first texture block + length = image_width; + while (length) { + int l = qMin(image_width - sx, length); + if (buffer_size < l) + l = buffer_size; + DST *dest = ((DST*)data->rasterBuffer->scanLine(spans->y)) + x; + const SRC *src = (SRC*)data->texture.scanLine(sy) + sx; qt_memconvert<DST, SRC>(dest, src, l); - } else if (sizeof(DST) == 3 && sizeof(SRC) == 3 && l >= 4 && - (quintptr(dest) & 3) == (quintptr(src) & 3)) - { - blendUntransformed_dest24(dest, src, coverage, l); - } else if (sizeof(DST) == 2 && sizeof(SRC) == 2 && l >= 2 && - (quintptr(dest) & 3) == (quintptr(src) & 3)) - { - blendUntransformed_dest16(dest, src, coverage, l); - } else { - blendUntransformed_unaligned(dest, src, coverage, l); + length -= l; + sx = 0; } - x += l; - length -= l; - sx = 0; + // Now use the rasterBuffer as the source of the texture, + // We can now progressively copy larger blocks + // - Less cpu time in code figuring out what to copy + // We are dealing with one block of data + // - More likely to fit in the cache + // - can use memcpy + int copy_image_width = image_width; + length = spans->len - image_width; + DST *src = ((DST*)data->rasterBuffer->scanLine(spans->y)) + x; + DST *dest = src + copy_image_width; + while (copy_image_width < length) { + qt_memconvert(dest, src, copy_image_width); + dest += copy_image_width; + length -= copy_image_width; + copy_image_width *= 2; + } + qt_memconvert(dest, src, length); + } else { + while (length) { + int l = qMin(image_width - sx, length); + if (buffer_size < l) + l = buffer_size; + DST *dest = ((DST*)data->rasterBuffer->scanLine(spans->y)) + x; + const SRC *src = (SRC*)data->texture.scanLine(sy) + sx; + if (sizeof(DST) == 3 && sizeof(SRC) == 3 && l >= 4 && + (quintptr(dest) & 3) == (quintptr(src) & 3)) + { + blendUntransformed_dest24(dest, src, coverage, l); + } else if (sizeof(DST) == 2 && sizeof(SRC) == 2 && l >= 2 && + (quintptr(dest) & 3) == (quintptr(src) & 3)) + { + blendUntransformed_dest16(dest, src, coverage, l); + } else { + blendUntransformed_unaligned(dest, src, coverage, l); + } + + x += l; + length -= l; + sx = 0; + } } ++spans; } |