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NX for 4bpp

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2671 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2010-05-15 12:40:59 +00:00
parent e244cdfeb2
commit 80891ed66b
6 changed files with 73 additions and 24 deletions
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examples/nx/nx_kbdin.c
+42 -3
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@@ -154,6 +154,9 @@ nxeg_renderglyph(FAR struct nxeg_state_s *st,
{
FAR struct nxeg_glyph_s *glyph = NULL;
FAR nxgl_mxpixel_t *ptr;
#if CONFIG_EXAMPLES_NX_BPP < 8
nxgl_mxpixel_t pixel;
#endif
int bmsize;
int row;
int col;
@@ -184,18 +187,54 @@ nxeg_renderglyph(FAR struct nxeg_state_s *st,
{
/* Initialize the glyph memory to the background color */
#if CONFIG_EXAMPLES_NX_BPP < 8 || CONFIG_EXAMPLES_NX_BPP == 24
# error "Additional logic is needed here"
#else
#if CONFIG_EXAMPLES_NX_BPP < 8
pixel = st->color[0];
# if CONFIG_EXAMPLES_NX_BPP == 1
/* Pack 1-bit pixels into a 2-bits */
pixel &= 0x01;
pixel = (pixel) << 1 |pixel;
# endif
# if CONFIG_EXAMPLES_NX_BPP < 4
/* Pack 2-bit pixels into a nibble */
pixel &= 0x03;
pixel = (pixel) << 2 |pixel;
# endif
/* Pack 4-bit nibbles into a byte */
pixel &= 0x0f;
pixel = (pixel) << 4 |pixel;
ptr = (FAR nxgl_mxpixel_t *)glyph->bitmap;
for (row = 0; row < glyph->height; row++)
{
for (col = 0; col < glyph->stride; col++)
{
/* Transfer the packed bytes into the buffer */
*ptr++ = pixel;
}
}
#elif CONFIG_EXAMPLES_NX_BPP == 24
# error "Additional logic is needed here for 24bpp support"
#else /* CONFIG_EXAMPLES_NX_BPP = {8,16,32} */
ptr = (FAR nxgl_mxpixel_t *)glyph->bitmap;
for (row = 0; row < glyph->height; row++)
{
/* Just copy the color value into the glyph memory */
for (col = 0; col < glyph->width; col++)
{
*ptr++ = st->color[0];
}
}
#endif
/* Then render the glyph into the allocated memory */
ret = RENDERER((FAR nxgl_mxpixel_t*)glyph->bitmap,