diff options
| -rw-r--r-- | src/plugins/graphicssystems/meego/dithering.cpp | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/src/plugins/graphicssystems/meego/dithering.cpp b/src/plugins/graphicssystems/meego/dithering.cpp index b50826c..c0b4b53 100644 --- a/src/plugins/graphicssystems/meego/dithering.cpp +++ b/src/plugins/graphicssystems/meego/dithering.cpp @@ -76,8 +76,13 @@ // Converts incoming RGB32 (QImage::Format_RGB32) to RGB565. Returns the newly allocated data. unsigned short* convertRGB32_to_RGB565(const unsigned char *in, int width, int height, int stride) { + // Output line stride. Alligned to 4 bytes. + int alignedWidth = width; + if (alignedWidth % 2 > 0) + alignedWidth++; + // Will store output - unsigned short *out = (unsigned short *) malloc(width * height * 2); + unsigned short *out = (unsigned short *) malloc(alignedWidth * height * 2); // Lookup tables for the 8bit => 6bit and 8bit => 5bit conversion unsigned char lookup_8bit_to_5bit[256]; @@ -174,7 +179,7 @@ unsigned short* convertRGB32_to_RGB565(const unsigned char *in, int width, int h } // Write the newly produced pixel - PUT_565(out, x, y, width, component[2], component[1], component[0]); + PUT_565(out, x, y, alignedWidth, component[2], component[1], component[0]); } } @@ -183,10 +188,16 @@ unsigned short* convertRGB32_to_RGB565(const unsigned char *in, int width, int h // Converts incoming RGBA32 (QImage::Format_ARGB32_Premultiplied) to RGB565. Returns the newly allocated data. // This function is similar (yet different) to the _565 variant but it makes sense to duplicate it here for simplicity. +// The output has each scan line aligned to 4 bytes (as expected by GL by default). unsigned short* convertARGB32_to_RGBA4444(const unsigned char *in, int width, int height, int stride) { + // Output line stride. Alligned to 4 bytes. + int alignedWidth = width; + if (alignedWidth % 2 > 0) + alignedWidth++; + // Will store output - unsigned short *out = (unsigned short *) malloc(width * height * 2); + unsigned short *out = (unsigned short *) malloc(alignedWidth * 2 * height); // Lookup tables for the 8bit => 4bit conversion unsigned char lookup_8bit_to_4bit[256]; @@ -269,7 +280,7 @@ unsigned short* convertARGB32_to_RGBA4444(const unsigned char *in, int width, in } // Write the newly produced pixel - PUT_4444(out, x, y, width, component[0], component[1], component[2], component[3]); + PUT_4444(out, x, y, alignedWidth, component[0], component[1], component[2], component[3]); } } |