diff options
Diffstat (limited to 'backends/PalmOS/Src/arm/wide_portrait.cpp')
| -rw-r--r-- | backends/PalmOS/Src/arm/wide_portrait.cpp | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/backends/PalmOS/Src/arm/wide_portrait.cpp b/backends/PalmOS/Src/arm/wide_portrait.cpp new file mode 100644 index 0000000000..7e4213137e --- /dev/null +++ b/backends/PalmOS/Src/arm/wide_portrait.cpp @@ -0,0 +1,43 @@ +#include "PACEInterfaceLib.h" +#include "ArmNative.h" +#include "endianutils.h" +#include "../shared.h" + +unsigned long OSystem_PALMOS_update_screen__wide_portrait(void *userData68KP) { + DataOSysWidePtr dataP = (DataOSysWideType *)userData68KP; + + Coord x, y; + UInt8 *dst = (UInt8 *)ReadUnaligned32(&(dataP->dst)); + UInt8 *src1 = (UInt8 *)ReadUnaligned32(&(dataP->src)); + UInt8 *src2 = src1; + + for (x = 0; x < WIDE_HALF_WIDTH; x++) + { + for (y = 0; y < WIDE_HALF_HEIGHT; y++) + { + *dst++ = *src1; + src1 += WIDE_PITCH; + *dst++ = *src1; + *dst++ = *src1; + src1 += WIDE_PITCH; + } + src1 = --src2; + dst += 20; // we draw 200pix scaled to 1.5 = 300, screen width=320, so next is 20 + + for (y = 0; y < WIDE_HALF_HEIGHT; y++) + { + *dst++ = *src1; + src1 += WIDE_PITCH; + *dst++ = *src1; + *dst++ = *src1; + src1 += WIDE_PITCH; + } + src1 = --src2; + dst += 20; + + MemMove(dst, dst - WIDE_PITCH, 300); // 300 = 200 x 1.5 + dst += WIDE_PITCH; + } + + return 0; +}
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