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.fixed a bug with sprite rendering

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.additional "optimization"
This commit is contained in:
ekeeke31 2010-07-02 13:21:21 +00:00
parent d2b4f21de8
commit 48b77511bf
2 changed files with 21 additions and 22 deletions
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37
source/render.c
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@ -1456,19 +1456,18 @@ static void render_bg_im2_vs(int line, int width, int odd)
static int spr_over = 0;
static void render_obj(int line, uint8 *buf, uint8 *table)
static void render_obj(uint8 *buf, uint8 *table)
{
uint8 sizetab[] = {8, 16, 24, 32};
int i, count, column;
int xpos;
int v_line;
int xpos, width;
int pixelmax = bitmap.viewport.w;
int pixelcount = 0;
int masked = 0;
uint8 *src, *s, *lb;
uint32 size, width;
uint32 size, v_line;
uint32 attr, attr_mask, name, palette, index;
object *obj_info = object_info[object_which];
@ -1500,7 +1499,7 @@ static void render_obj(int line, uint8 *buf, uint8 *table)
pixelcount += width;
/* draw visible sprites */
if (((xpos + width) >= 0) && (xpos < pixelmax) && !masked)
if (((xpos + width) > 0) && (xpos < pixelmax) && !masked)
{
/* sprite attributes + pattern index */
attr = obj_info[count].attr;
@ -1509,7 +1508,7 @@ static void render_obj(int line, uint8 *buf, uint8 *table)
name = attr & 0x07FF;
/* sprite vertical offset */
v_line = line - obj_info[count].ypos;
v_line = obj_info[count].ypos;
s = &name_lut[((attr >> 3) & 0x300) | (size << 4) | ((v_line & 0x18) >> 1)];
v_line = (v_line & 7) << 3;
@ -1545,19 +1544,18 @@ static void render_obj(int line, uint8 *buf, uint8 *table)
spr_over = 0;
}
static void render_obj_im2(int line, int odd, uint8 *buf, uint8 *table)
static void render_obj_im2(int odd, uint8 *buf, uint8 *table)
{
uint8 sizetab[] = {8, 16, 24, 32};
int i, count, column;
int xpos;
int v_line;
int xpos, width;
int pixelmax = bitmap.viewport.w;
int pixelcount = 0;
int masked = 0;
uint8 *src, *s, *lb;
uint32 size, width;
uint32 size, v_line;
uint32 attr, attr_mask, name, palette, index;
uint32 offs;
@ -1590,7 +1588,7 @@ static void render_obj_im2(int line, int odd, uint8 *buf, uint8 *table)
pixelcount += width;
/* draw visible sprites */
if (((xpos + width) >= 0) && (xpos < pixelmax) && !masked)
if (((xpos + width) > 0) && (xpos < pixelmax) && !masked)
{
/* sprite attributes + pattern index */
attr = obj_info[count].attr;
@ -1599,7 +1597,7 @@ static void render_obj_im2(int line, int odd, uint8 *buf, uint8 *table)
name = (attr & 0x03FF);
/* sprite vertical offset */
v_line = line - obj_info[count].ypos;
v_line = obj_info[count].ypos;
s = &name_lut[((attr >> 3) & 0x300) | (size << 4) | ((v_line & 0x18) >> 1)];
v_line = (((v_line & 7) << 1) | odd) << 3;
@ -1758,13 +1756,13 @@ void render_line(int line)
/* Shadow & Highlight */
merge(&nta_buf[0x20], &ntb_buf[0x20], &bg_buf[0x20], lut[2], width);
memset(&obj_buf[0x20], 0, width);
render_obj_im2(line, odd, obj_buf, lut[3]);
render_obj_im2(odd, obj_buf, lut[3]);
merge(&obj_buf[0x20], &bg_buf[0x20], &lb[0x20], lut[4], width);
}
else
{
merge(&nta_buf[0x20], &ntb_buf[0x20], &lb[0x20], lut[0], width);
render_obj_im2(line, odd, lb, lut[1]);
render_obj_im2(odd, lb, lut[1]);
}
}
else
@ -1780,13 +1778,13 @@ void render_line(int line)
/* Shadow & Highlight */
merge(&nta_buf[0x20], &ntb_buf[0x20], &bg_buf[0x20], lut[2], width);
memset(&obj_buf[0x20], 0, width);
render_obj(line, obj_buf, lut[3]);
render_obj(obj_buf, lut[3]);
merge(&obj_buf[0x20], &bg_buf[0x20], &lb[0x20], lut[4], width);
}
else
{
merge(&nta_buf[0x20], &ntb_buf[0x20], &lb[0x20], lut[0], width);
render_obj(line, lb, lut[1]);
render_obj(lb, lut[1]);
}
}
@ -1907,7 +1905,8 @@ void parse_satb(int line)
{
uint8 sizetab[] = {8, 16, 24, 32};
uint32 link = 0;
uint32 ypos, size, height;
uint32 size, height;
int ypos;
uint32 limit = (reg[12] & 1) ? 20 : 16;
uint32 total = limit << 2;
@ -1921,11 +1920,11 @@ void parse_satb(int line)
do
{
/* Read ypos & size from internal SAT */
ypos = (q[link] >> im2_flag) & 0x1FF;
ypos = line - ((q[link] >> im2_flag) & 0x1FF);
size = q[link + 1] >> 8;
height = sizetab[size & 3];
if((line >= ypos) && (line < (ypos + height)))
if ((ypos >= 0) && (ypos < height))
{
/* Sprite limit (max. 16 or 20 sprites displayed per line) */
if(count == limit)

6
source/vdp.c
View File

@ -681,7 +681,7 @@ static void data_w(unsigned int data)
error("[%d(%d)][%d(%d)] CRAM 0x%x write -> 0x%x (%x)\n", v_counter, mcycles_68k/MCYCLES_PER_LINE, mcycles_68k, mcycles_68k%MCYCLES_PER_LINE, addr, data, m68k_get_reg (NULL, M68K_REG_PC));
#endif
uint16 *p = (uint16 *) &cram[(addr & 0x7E)];
data = PACK_CRAM (data & 0x0EEE);
data = PACK_CRAM (data);
if (data != *p)
{
int index = (addr >> 1) & 0x3F;
@ -690,11 +690,11 @@ static void data_w(unsigned int data)
/* update color palette */
/* color entry 0 of each palette is never displayed (transparent pixel) */
if (index & 0x0F)
color_update(index, *p);
color_update(index, data);
/* update background color */
if (border == index)
color_update (0x00, *p);
color_update (0x00, data);
/* CRAM modified during HBLANK (Striker, Zero the Kamikaze, etc) */
if (!(status & 8) && (reg[1]& 0x40) && (mcycles_68k <= (mcycles_vdp + 860)))