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Sprite rendering bug fix from Dave Hooper

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9055 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman 2006-03-16 00:24:58 +00:00
parent 211532c62a
commit 3fa27cdf1e
1 changed files with 38 additions and 30 deletions
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68
apps/plugins/pacbox/arcade.c
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@ -410,27 +410,39 @@ unsigned getDipSwitches(void) {
static inline void drawChar( unsigned char * buffer, int index, int ox, int oy, int color )
{
buffer += ox + oy*224; // Make the buffer point to the character position
index *= 64; // Make the index point to the character offset into the character table
color = (color & 0x3F)*4;
int x,y;
/* Make the index point to the character offset into the character table */
unsigned char * chrmap = charmap_ + index*64;
buffer += ox + oy*224; /* Make the buffer point to the character position*/
color = (color & 0x3F)*4;
if( color == 0 )
{
for( y=7; y>=0; y-- )
{
rb->memset( buffer, 0, 8 );
buffer += ScreenWidth;
};
return;
};
if( output_devices_ & FlipScreen ) {
// Flip character
buffer += 7*ScreenWidth;
for( y=0; y<8; y++ ) {
for( y=7; y>=0; y-- ) {
for( x=7; x>=0; x-- ) {
buffer[x] = charmap_[ index++ ] + color;
*buffer++ = (*chrmap++) + color;
}
buffer -= ScreenWidth; // Go to the next line
buffer -= ScreenWidth + 8; // Go to the next line
}
}
else {
for( y=0; y<8; y++ ) {
for( x=0; x<=7; x++ ) {
buffer[x] = charmap_[ index++ ] + color;
for( y=7; y>=0; y-- ) {
for( x=7; x>=0; x-- ) {
*buffer++ = (*chrmap++) + color;
}
buffer += ScreenWidth; // Go to the next line
buffer += ScreenWidth - 8; // Go to the next line
}
}
}
@ -455,7 +467,6 @@ inline void drawSprite( unsigned char * buffer, int index )
unsigned char * spritemap_base = spritemap_ + ((ps.n & 0x3F)*256);
buffer += ScreenWidth*ps.y;
s2 = &spritemap_base[start_x-ps.x];
dirty_[(start_x >> 3) + (ps.y >> 3)*28] = 1;
dirty_[(start_x >> 3) + 1 + (ps.y >> 3)*28] = 1;
@ -469,52 +480,49 @@ inline void drawSprite( unsigned char * buffer, int index )
// Draw the 16x16 sprite
if( ps.mode == 0 ) { // Normal
s2 = spritemap_base + start_x-ps.x;
// Draw the 16x16 sprite
for( y=15; y>=0; y-- ) {
s = s2;
for( x=start_x; x<=end_x; x++ ) {
int c = *(s++);
if( c ) {
buffer[x] = c + color;
for( x=start_x; x<=end_x; x++, s++ ) {
if( *s ) {
buffer[x] = color + *s;
}
}
buffer += ScreenWidth;
s2 += 16;
}
} else if( ps.mode == 1 ) { // Flip Y
s2 += 240;
s2 = spritemap_base + start_x-ps.x + 240;
for( y=15; y>=0; y-- ) {
s = s2;
for( x=start_x; x<=end_x; x++ ) {
int c = *(s++);
if( c ) {
buffer[x] = c + color;
for( x=start_x; x<=end_x; x++, s++ ) {
if( *s ) {
buffer[x] = color + *s;
}
}
buffer += ScreenWidth;
s2 -= 16;
}
} else if( ps.mode == 2 ) { // Flip X
s2 += 15;
s2 = spritemap_base + 15 + ps.x-start_x;
for( y=15; y>=-0; y-- ) {
s = s2;
for( x=start_x; x<=end_x; x++ ) {
int c = *(s--);
if( c ) {
buffer[x] = c + color;
for( x=start_x; x<=end_x; x++, s-- ) {
if( *s ) {
buffer[x] = color + *s;
}
}
buffer += ScreenWidth;
s2 += 16;
}
} else { // Flip X and Y
s2 += 255;
s2 = spritemap_base + 255 + ps.x-start_x;
for( y=15; y>=0; y-- ) {
s = s2;
for( x=start_x; x<=end_x; x++ ) {
int c = *(s--);
if( c ) {
buffer[x] = c + color;
for( x=start_x; x<=end_x; x++, s-- ) {
if( *s ) {
buffer[x] = color + *s;
}
}
buffer += ScreenWidth;