UINT32 SVGA_ReadPixel24(struct CRastPort *rp, INT32 x,INT32 y)
{
struct PixMap *psd = rp->crp_PixMap;
register unsigned char *addr = psd->addr + y * psd->pitch + x * 3;
return RGB2PIXEL888(addr[2], addr[1], addr[0]);
}
/*
** Blit
*/
static void
DJGR_update(PSD psd, MWCOORD destx, MWCOORD desty, MWCOORD width, MWCOORD height)
{
if (!width)
width = psd->xres;
if (!height)
height = psd->yres;
/*
typedef unsigned char * ADDR8;
typedef unsigned short * ADDR16;
typedef uint32_t * ADDR32;
*/
MWCOORD x,y;
MWPIXELVAL c;
/* got to read from psd->addr and write with GrPlot()*/
//if (!((width == 1) || (height == 1))) return;
//printf("U: %d %d %d %d ",destx,desty,width,height);
if (psd->pixtype == MWPF_TRUECOLOR332)
{
unsigned char *addr = psd->addr + desty * psd->pitch + destx;
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
c = addr[x];
GrPlot(destx+x, desty+y, c);
}
addr += psd->pitch;
}
}
else if ((psd->pixtype == MWPF_TRUECOLOR565) || (psd->pixtype == MWPF_TRUECOLOR555))
{
unsigned char *addr = psd->addr + desty * psd->pitch + (destx << 1);
for (y = 0; y < height; y++) {
for (x = 0; x < width*2; x++) {
MWPIXELVAL c = ((unsigned short *)addr)[x];
GrPlot(destx+x, desty+y, c);
}
addr += psd->pitch;
}
}
else if (psd->pixtype == MWPF_TRUECOLOR888)
{
unsigned char *addr = psd->addr + desty * psd->pitch + destx * 3;
unsigned int extra = psd->pitch - width * 3;
for (y = 0; y < height; y++) {
for (x = 0; x < width*3; x++) {
MWPIXELVAL c = RGB2PIXEL888(addr[2], addr[1], addr[0]);
GrPlot(destx+x, desty+y, c);
addr += 3;
}
addr += extra;
}
}
else if (((MWPIXEL_FORMAT == MWPF_TRUECOLOR8888) || (MWPIXEL_FORMAT == MWPF_TRUECOLORABGR)) & (psd->bpp != 8))
{
unsigned char *addr = psd->addr + desty * psd->pitch + (destx << 2);
for (y = 0; y < height; y++) {
for (x = 0; x < width*4; x++) {
MWPIXELVAL c = ((unsigned short *)addr)[x]; //MWPIXELVAL=uint32_t
GrPlot(destx+x, desty+y, c);
}
addr += psd->pitch;
}
}
else /* MWPF_PALETTE*/
{
unsigned char *addr = psd->addr + desty * psd->pitch + destx;
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
MWPIXELVAL c = addr[x];
GrPlot(destx+x, desty+y, c);
}
addr += psd->pitch;
}
}
}
/* copy Microwindows framebuffer pixels to another framebuffer, same pixel format*/
void
copy_framebuffer(PSD psd, MWCOORD destx, MWCOORD desty, MWCOORD w, MWCOORD h,
unsigned char *dstpixels, unsigned int dstpitch)
{
unsigned int x, y;
unsigned int srcpitch = psd->pitch;
//printf("copy_framebuffer %d,%d %d,%d\n", destx, desty, w, h);
/* Use optimized loops for most common framebuffer modes */
/* NOTE: ASSUMES DEST FRAMEBUFFER IN SAME FORMAT AS MWPIXEL_FORMAT!!!*/
#if MWPIXEL_FORMAT == MWPF_TRUECOLOR332
{
unsigned char *src = psd->addr + desty * srcpitch + destx;
unsigned char *dstl = dstpixels + desty * dstpitch + destx;
for (y = 0; y < h; y++) {
unsigned char *dst = dstl;
for (x = 0; x < w; x++) {
//MWPIXELVAL c = src[x];
//unsigned long pixel = PIXELVAL_to_pixel(c);
dst[x] = src[x];
}
src += srcpitch;
dstl += dstpitch;
}
}
#elif (MWPIXEL_FORMAT == MWPF_TRUECOLOR565) || (MWPIXEL_FORMAT == MWPF_TRUECOLOR555)
{
unsigned char *src = psd->addr + desty * srcpitch + (destx << 1);
unsigned char *dstl = dstpixels + desty * dstpitch + (destx << 1);
for (y = 0; y < h; y++) {
uint16_t *dst = (uint16_t *)dstl;
for (x = 0; x < w; x++) {
//MWPIXELVAL c = ((ADDR16)src)[x];
//unsigned long pixel = PIXELVAL_to_pixel(c);
dst[x] = ((uint16_t *)src)[x];
}
src += srcpitch;
dstl += dstpitch;
}
}
#elif MWPIXEL_FORMAT == MWPF_TRUECOLORRGB
{
unsigned char *src = psd->addr + desty * srcpitch + (destx * 3);
unsigned char *dstl = dstpixels + desty * dstpitch + (destx * 3);
unsigned int srcextra = srcpitch - (w * 3);
for (y = 0; y < h; y++) {
unsigned char *dst = dstl;
for (x = 0; x < w; x++) {
MWPIXELVAL c = RGB2PIXEL888(src[2], src[1], src[0]);
//unsigned long pixel = PIXELVAL_to_pixel(c);
// FIXME little-endian only
*dst++ = (unsigned char)c; // B
*dst++ = (unsigned char)c >> 8; // G
*dst++ = (unsigned char)c >> 16; // R
src += 3;
}
src += srcextra;
dstl += dstpitch;
}
}
#elif (MWPIXEL_FORMAT == MWPF_TRUECOLORARGB) || (MWPIXEL_FORMAT == MWPF_TRUECOLORABGR)
{
// our framebuffer is MWPF_TRUECOLORARGB which is BGRA byte order, and so are SDL screenbits
unsigned char *src = psd->addr + desty * srcpitch + (destx << 2);
unsigned char *dstl = dstpixels + desty * dstpitch + (destx << 2);
for (y = 0; y < h; y++) {
uint32_t *dst = (uint32_t *)dstl;
for (x = 0; x < w; x++) {
//MWPIXELVAL c = ((ADDR32)src)[x];
//unsigned long pixel = PIXELVAL_to_pixel(c);
dst[x] = ((uint32_t *)src)[x];
}
src += srcpitch;
dstl += dstpitch;
}
}
#else /* MWPF_PALETTE*/
{
unsigned char *src = psd->addr + desty * srcpitch + destx;
unsigned char *dstl = dstpixels + desty * dstpitch + destx;
for (y = 0; y < h; y++) {
unsigned char *dst = dstl;
for (x = 0; x < w; x++) {
//MWPIXELVAL c = src[x];
//unsigned long pixel = PIXELVAL_to_pixel(c);
dst[x] = src[x];
}
src += srcpitch;
dstl += dstpitch;
}
}
#endif
}