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mcd, fix gfx (32x32 stamp)

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kub 2022-09-14 19:27:43 +00:00
parent 6ce10a4308
commit f9b966dec6
1 changed files with 10 additions and 5 deletions
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15
pico/cd/gfx.c
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@ -43,6 +43,7 @@ typedef struct
//uint32 cycles; /* current cycles count for graphics operation */
//uint32 cyclesPerLine; /* current graphics operation timings */
uint32 dotMask; /* stamp map size mask */
uint32 stampMask; /* stamp number mask */
uint16 *tracePtr; /* trace vector pointer */
uint16 *mapPtr; /* stamp map table base address */
uint8 stampShift; /* stamp pixel shift value (related to stamp size) */
@ -193,7 +194,7 @@ static inline int gfx_pixel(uint32 xpos, uint32 ypos, uint16 *lut_cell)
/* c = cell offset (0-3 for 16x16, 0-15 for 32x32) */
/* yyy = line offset (0-7) */
/* xxx = pixel offset (0-7) */
stamp_index = (stamp_data & 0x7ff) << 8;
stamp_index = (stamp_data & gfx.stampMask) << 8;
if (stamp_index)
{
@ -355,28 +356,32 @@ void gfx_start(uint32 base)
{
case 0:
gfx.dotMask = 0x07ffff; /* 256x256 dots/map */
gfx.stampShift = 11 + 4; /* 16x16 dots/stamps */
gfx.stampMask = 0x7ff; /* 16x16 dots/stamp */
gfx.stampShift = 11 + 4; /* 16x16 dots/stamp */
gfx.mapShift = 4; /* 16x16 stamps/map */
mask = 0x3fe00; /* 512 bytes/table */
break;
case 1:
gfx.dotMask = 0x07ffff; /* 256x256 dots/map */
gfx.stampShift = 11 + 5; /* 32x32 dots/stamps */
gfx.stampMask = 0x7fc; /* 16x16 dots/stamp */
gfx.stampShift = 11 + 5; /* 32x32 dots/stamp */
gfx.mapShift = 3; /* 8x8 stamps/map */
mask = 0x3ff80; /* 128 bytes/table */
break;
case 2:
gfx.dotMask = 0x7fffff; /* 4096*4096 dots/map */
gfx.stampShift = 11 + 4; /* 16x16 dots/stamps */
gfx.stampMask = 0x7ff; /* 16x16 dots/stamp */
gfx.stampShift = 11 + 4; /* 16x16 dots/stamp */
gfx.mapShift = 8; /* 256x256 stamps/map */
mask = 0x20000; /* 131072 bytes/table */
break;
case 3:
gfx.dotMask = 0x7fffff; /* 4096*4096 dots/map */
gfx.stampShift = 11 + 5; /* 32x32 dots/stamps */
gfx.stampMask = 0x7fc; /* 16x16 dots/stamp */
gfx.stampShift = 11 + 5; /* 32x32 dots/stamp */
gfx.mapShift = 7; /* 128x128 stamps/map */
mask = 0x38000; /* 32768 bytes/table */
break;