diff options
| author | Allan Sandfeld Jensen <allan.jensen@digia.com> | 2013-07-03 15:13:55 +0200 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-07-23 16:30:06 +0200 |
| commit | 36e6376755ce0f5dcd022e11d2539f125980a96b (patch) | |
| tree | ac146b02e9a6f9197d03f2ec562b70dc14e7c901 /src/gui/painting/qdrawhelper_p.h | |
| parent | d24b4a5548c941a7b9bed9888094d9c1be8d6ca3 (diff) | |
Support RGBA image format
Support the byte-ordered RGBA format which is used by OpenGL, and many
endian neutral byte formats.
Task-number: QTBUG-32201
Change-Id: I77cffb4c30c69545fa96ded2f537b2ebd9351acb
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>
Diffstat (limited to 'src/gui/painting/qdrawhelper_p.h')
| -rw-r--r-- | src/gui/painting/qdrawhelper_p.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/gui/painting/qdrawhelper_p.h b/src/gui/painting/qdrawhelper_p.h index 0b8a41c904..f4c29996b4 100644 --- a/src/gui/painting/qdrawhelper_p.h +++ b/src/gui/painting/qdrawhelper_p.h @@ -653,6 +653,30 @@ static Q_ALWAYS_INLINE uint PREMUL(uint x) { } #endif +#if Q_BYTE_ORDER == Q_BIG_ENDIAN +static Q_ALWAYS_INLINE quint32 RGBA2ARGB(quint32 x) { + quint32 rgb = x >> 8; + quint32 a = x << 24; + return a | rgb; +} + +static Q_ALWAYS_INLINE quint32 ARGB2RGBA(quint32 x) { + quint32 rgb = x << 8; + quint32 a = x >> 24; + return a | rgb; +} +#else +static Q_ALWAYS_INLINE quint32 RGBA2ARGB(quint32 x) { + // RGBA8888 is ABGR32 on little endian. + quint32 ag = x & 0xff00ff00; + quint32 rg = x & 0x00ff00ff; + return ag | (rg << 16) | (rg >> 16); +} + +static Q_ALWAYS_INLINE quint32 ARGB2RGBA(quint32 x) { + return RGBA2ARGB(x); +} +#endif static Q_ALWAYS_INLINE uint BYTE_MUL_RGB16(uint x, uint a) { a += 1; |