6502/cc65
1
0
Fork 0
mirror of https://github.com/cc65/cc65.git synced 2024-12-27 15:29:46 +00:00
Code Issues Projects Releases Wiki Activity

Fix shaped bugs

Browse Source 
git-svn-id: svn://svn.cc65.org/cc65/trunk@5933 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
karri 2012-11-13 14:48:25 +00:00
parent e04f1d8cb0
commit 7e75e29812
1 changed files with 44 additions and 77 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

121
src/sp65/lynxsprite.c
View File

@ -144,46 +144,13 @@ static void AssembleByte(unsigned bits, char val)
}
return;
}
val <<= 8 - bits;
do {
byte <<= 1;
if (val & 0x80)
++byte;
if (!(--bit_counter)) {
OutBuffer[OutIndex++] = byte;
if (!OutIndex) {
Error ("Sprite is too large for the Lynx");
}
byte = 0;
bit_counter = 8;
}
val <<= 1;
} while (--bits);
}
static void AssembleByteLiteral(unsigned bits, char val)
{
static char bit_counter = 8, byte = 0;
/* initialize */
if (!bits) {
OutIndex = 0;
bit_counter = 8;
byte = 0;
return;
}
/* handle end of line */
if (bits == 8) {
/* handle end of line for literal */
if (bits == 7) {
if (bit_counter != 8) {
byte <<= bit_counter;
OutBuffer[OutIndex++] = byte;
if (!OutIndex) {
Error ("Sprite is too large for the Lynx");
Error ("ASprite is too large for the Lynx");
}
}
return;
@ -266,20 +233,19 @@ static void encodeSprite(StrBuf *D, enum Mode M, char ColorBits, char ColorMask,
unsigned char differ[16];
unsigned char *d_ptr;
AssembleByte(0, 0);
switch (M) {
case smAuto:
case smLiteral:
AssembleByteLiteral(0, 0);
for (i = 0; i < len; i++) {
/* Fetch next pixel index into pixel buffer */
AssembleByteLiteral(ColorBits, LineBuffer[i] & ColorMask);
AssembleByte(ColorBits, LineBuffer[i] & ColorMask);
}
AssembleByteLiteral(8, 0);
AssembleByte(7, 0);
/* Write the buffer to file */
WriteOutBuffer(D);
break;
case smPacked:
AssembleByte(0, 0);
i = 0;
while (len) {
if (ChoosePackagingMode(len, i, LineBuffer)) {
@ -325,53 +291,54 @@ static void encodeSprite(StrBuf *D, enum Mode M, char ColorBits, char ColorMask,
break;
case smShaped:
if (LastOpaquePixel >= 0 && LastOpaquePixel < len) {
len = LastOpaquePixel;
}
AssembleByte(0, 0);
i = 0;
while (len) {
if (ChoosePackagingMode(len, i, LineBuffer)) {
/* Make runlength packet */
V = LineBuffer[i];
++i;
--len;
count = 0;
do {
++count;
if (LastOpaquePixel > -1) {
if (LastOpaquePixel < len - 1) {
len = LastOpaquePixel + 1;
}
i = 0;
while (len) {
if (ChoosePackagingMode(len, i, LineBuffer)) {
/* Make runlength packet */
V = LineBuffer[i];
++i;
--len;
} while (V == LineBuffer[i] && len && count != 15);
count = 0;
do {
++count;
++i;
--len;
} while (V == LineBuffer[i] && len && count != 15);
AssembleByte(5, count);
AssembleByte(ColorBits, V);
AssembleByte(5, count);
AssembleByte(ColorBits, V);
} else {
/* Make packed literal packet */
d_ptr = differ;
V = LineBuffer[i++];
*d_ptr++ = V;
--len;
count = 0;
while (ChoosePackagingMode(len, i, LineBuffer) == 0 && len && count != 15) {
} else {
/* Make packed literal packet */
d_ptr = differ;
V = LineBuffer[i++];
*d_ptr++ = V;
++count;
--len;
count = 0;
while (ChoosePackagingMode(len, i, LineBuffer) == 0 && len && count != 15) {
V = LineBuffer[i++];
*d_ptr++ = V;
++count;
--len;
}
AssembleByte(5, count | 0x10);
d_ptr = differ;
do {
AssembleByte(ColorBits, *d_ptr++);
} while (--count >= 0);
}
AssembleByte(5, count | 0x10);
d_ptr = differ;
do {
AssembleByte(ColorBits, *d_ptr++);
} while (--count >= 0);
}
AssembleByte(5, 0);
AssembleByte(8, 0);
/* Write the buffer to file */
WriteOutBuffer(D);
}
AssembleByte(5, 0);
AssembleByte(8, 0);
/* Write the buffer to file */
WriteOutBuffer(D);
break;
}
}