dst += BB_SIZE;
}
- /* Create scroll opffsets for all scanlines of the normalmap */
+ /* Create scroll offsets for all scanlines of the normalmap */
updateScrollTables(lastFrameDuration);
- /* Then, render the reflection under the horizon */
- /* dst is already in place */
- src = background + HORIZON_HEIGHT * backgroundW;
+ /* Render the baked reflection one scanline below its place, so that
+ * the displacement that follows will be done in a cache-friendly way
+ */
+ src -= PIXEL_PADDING; /* We want to also fill the PADDING pixels here */
+ dst = backBuffer + (HORIZON_HEIGHT + 1) * BB_SIZE;
+ for (scanline = 0; scanline < REFLECTION_HEIGHT; scanline++) {
+ memcpy(dst, src, (fb_width + PIXEL_PADDING) * 2);
+ src += backgroundW;
+ dst += BB_SIZE;
+ }
+
+ /* Perform displacement */
+ dst = backBuffer + HORIZON_HEIGHT * BB_SIZE + PIXEL_PADDING;
+ src = dst + BB_SIZE; /* The pixels to be displaced are 1 scanline below */
dispScanline = displacementMap;
for (scanline = 0; scanline < REFLECTION_HEIGHT; scanline++) {
for (i = 0; i < fb_width; i++) {
d = dispScanline[(i + scrollTableRounded[scanline]) % scrollModTable[scanline]];
- *dst++ = src[i + scroll + d];
+ *dst++ = src[i + d];
}
src += backgroundW;
dst += BB_SIZE - fb_width;
static void rleEncode(unsigned char *pixels, unsigned int w, unsigned int h) {
int scanline;
int i;
- int skipping = 1;
+ int penActive = 0;
+ int counter = 0;
for (scanline = 0; scanline < h; scanline++) {
for (i = 0; i < w; i++) {
if (*pixels++) {
-
+ if (penActive) {
+ if (counter >= PIXEL_PADDING) {
+ printf("W %d ", counter);
+ counter = 0;
+ printf("I %d ", counter);
+ }
+ counter++;
+ } else {
+ counter++;
+ printf("I %d ", counter);
+ counter = 1;
+ penActive = 1;
+ }
+ } else {
+ if (penActive) {
+ printf("W %d ", counter);
+ counter = 0;
+ penActive = 0;
+ } else {
+ counter++;
+ }
}
}
+
+ if (penActive) {
+ printf("W %d ", counter);
+ }
+ penActive = 0;
+ counter = 0;
+ printf(" CR\n");
}
}