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02607: frogs: Taking a screenshot in Frogs (Gremlin) exits the game with an error.

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This commit is contained in:
Aaron Giles 2008-11-03 08:31:39 +00:00
parent bf4f376e9b
commit abf8eafc47
1 changed files with 138 additions and 0 deletions
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138
src/emu/rendersw.c
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@ -1650,6 +1650,140 @@ static void FUNC_PREFIX(draw_quad_rgb32)(const render_primitive *prim, void *dst
} }
/*-------------------------------------------------
draw_quad_rgb32_add - perform
rasterization by using RGB add
-------------------------------------------------*/
static void FUNC_PREFIX(draw_quad_rgb32_add)(const render_primitive *prim, void *dstdata, UINT32 pitch, quad_setup_data *setup)
{
const rgb_t *palbase = prim->texture.palette;
INT32 dudx = setup->dudx;
INT32 dvdx = setup->dvdx;
INT32 endx = setup->endx;
INT32 x, y;
/* simply can't do this without reading from the dest */
if (NO_DEST_READ)
return;
/* fast case: no coloring, no alpha */
if (prim->color.r >= 1.0f && prim->color.g >= 1.0f && prim->color.b >= 1.0f && IS_OPAQUE(prim->color.a))
{
/* loop over rows */
for (y = setup->starty; y < setup->endy; y++)
{
PIXEL_TYPE *dest = (PIXEL_TYPE *)dstdata + y * pitch + setup->startx;
INT32 curu = setup->startu + (y - setup->starty) * setup->dudy;
INT32 curv = setup->startv + (y - setup->starty) * setup->dvdy;
/* no lookup case */
if (palbase == NULL)
{
/* loop over cols */
for (x = setup->startx; x < endx; x++)
{
UINT32 pix = GET_TEXEL(argb32)(&prim->texture, curu, curv);
UINT32 dpix = NO_DEST_READ ? 0 : *dest;
UINT32 r = SOURCE32_R(pix) + DEST_R(dpix);
UINT32 g = SOURCE32_G(pix) + DEST_G(dpix);
UINT32 b = SOURCE32_B(pix) + DEST_B(dpix);
r = (r | -(r >> (8 - SRCSHIFT_R))) & (0xff >> SRCSHIFT_R);
g = (g | -(g >> (8 - SRCSHIFT_G))) & (0xff >> SRCSHIFT_G);
b = (b | -(b >> (8 - SRCSHIFT_B))) & (0xff >> SRCSHIFT_B);
*dest++ = DEST_ASSEMBLE_RGB(r, g, b);
curu += dudx;
curv += dvdx;
}
}
/* lookup case */
else
{
/* loop over cols */
for (x = setup->startx; x < endx; x++)
{
UINT32 pix = GET_TEXEL(argb32)(&prim->texture, curu, curv);
UINT32 dpix = NO_DEST_READ ? 0 : *dest;
UINT32 r = (palbase[(pix >> 16) & 0xff] >> SRCSHIFT_R) + DEST_R(dpix);
UINT32 g = (palbase[(pix >> 8) & 0xff] >> SRCSHIFT_G) + DEST_G(dpix);
UINT32 b = (palbase[(pix >> 0) & 0xff] >> SRCSHIFT_B) + DEST_B(dpix);
r = (r | -(r >> (8 - SRCSHIFT_R))) & (0xff >> SRCSHIFT_R);
g = (g | -(g >> (8 - SRCSHIFT_G))) & (0xff >> SRCSHIFT_G);
b = (b | -(b >> (8 - SRCSHIFT_B))) & (0xff >> SRCSHIFT_B);
*dest++ = DEST_ASSEMBLE_RGB(r, g, b);
curu += dudx;
curv += dvdx;
}
}
}
}
/* alpha and/or coloring case */
else
{
UINT32 sr = (UINT32)(256.0f * prim->color.r);
UINT32 sg = (UINT32)(256.0f * prim->color.g);
UINT32 sb = (UINT32)(256.0f * prim->color.b);
UINT32 sa = (UINT32)(256.0f * prim->color.a);
/* clamp R,G,B and inverse A to 0-256 range */
if (sr > 0x100) { if ((INT32)sr < 0) sr = 0; else sr = 0x100; }
if (sg > 0x100) { if ((INT32)sg < 0) sg = 0; else sg = 0x100; }
if (sb > 0x100) { if ((INT32)sb < 0) sb = 0; else sb = 0x100; }
if (sa > 0x100) { if ((INT32)sa < 0) sa = 0; else sa = 0x100; }
/* loop over rows */
for (y = setup->starty; y < setup->endy; y++)
{
PIXEL_TYPE *dest = (PIXEL_TYPE *)dstdata + y * pitch + setup->startx;
INT32 curu = setup->startu + (y - setup->starty) * setup->dudy;
INT32 curv = setup->startv + (y - setup->starty) * setup->dvdy;
/* no lookup case */
if (palbase == NULL)
{
/* loop over cols */
for (x = setup->startx; x < endx; x++)
{
UINT32 pix = GET_TEXEL(argb32)(&prim->texture, curu, curv);
UINT32 dpix = NO_DEST_READ ? 0 : *dest;
UINT32 r = ((SOURCE32_R(pix) * sr * sa) >> 16) + DEST_R(dpix);
UINT32 g = ((SOURCE32_G(pix) * sg * sa) >> 16) + DEST_G(dpix);
UINT32 b = ((SOURCE32_B(pix) * sb * sa) >> 16) + DEST_B(dpix);
r = (r | -(r >> (8 - SRCSHIFT_R))) & (0xff >> SRCSHIFT_R);
g = (g | -(g >> (8 - SRCSHIFT_G))) & (0xff >> SRCSHIFT_G);
b = (b | -(b >> (8 - SRCSHIFT_B))) & (0xff >> SRCSHIFT_B);
*dest++ = DEST_ASSEMBLE_RGB(r, g, b);
curu += dudx;
curv += dvdx;
}
}
/* lookup case */
else
{
/* loop over cols */
for (x = setup->startx; x < endx; x++)
{
UINT32 pix = GET_TEXEL(argb32)(&prim->texture, curu, curv);
UINT32 dpix = NO_DEST_READ ? 0 : *dest;
UINT32 r = ((palbase[(pix >> 16) & 0xff] * sr * sa) >> (16 + SRCSHIFT_R)) + DEST_R(dpix);
UINT32 g = ((palbase[(pix >> 8) & 0xff] * sr * sa) >> (16 + SRCSHIFT_R)) + DEST_G(dpix);
UINT32 b = ((palbase[(pix >> 0) & 0xff] * sr * sa) >> (16 + SRCSHIFT_R)) + DEST_B(dpix);
r = (r | -(r >> (8 - SRCSHIFT_R))) & (0xff >> SRCSHIFT_R);
g = (g | -(g >> (8 - SRCSHIFT_G))) & (0xff >> SRCSHIFT_G);
b = (b | -(b >> (8 - SRCSHIFT_B))) & (0xff >> SRCSHIFT_B);
*dest++ = DEST_ASSEMBLE_RGB(r, g, b);
curu += dudx;
curv += dvdx;
}
}
}
}
}
/*************************************************************************** /***************************************************************************
32-BIT ARGB QUAD RASTERIZERS 32-BIT ARGB QUAD RASTERIZERS
@ -2167,6 +2301,10 @@ static void FUNC_PREFIX(setup_and_draw_textured_quad)(const render_primitive *pr
FUNC_PREFIX(draw_quad_rgb32)(prim, dstdata, pitch, &setup); FUNC_PREFIX(draw_quad_rgb32)(prim, dstdata, pitch, &setup);
break; break;
case PRIMFLAG_TEXFORMAT(TEXFORMAT_RGB32) | PRIMFLAG_BLENDMODE(BLENDMODE_ADD):
FUNC_PREFIX(draw_quad_rgb32_add)(prim, dstdata, pitch, &setup);
break;
case PRIMFLAG_TEXFORMAT(TEXFORMAT_ARGB32) | PRIMFLAG_BLENDMODE(BLENDMODE_ALPHA): case PRIMFLAG_TEXFORMAT(TEXFORMAT_ARGB32) | PRIMFLAG_BLENDMODE(BLENDMODE_ALPHA):
FUNC_PREFIX(draw_quad_argb32_alpha)(prim, dstdata, pitch, &setup); FUNC_PREFIX(draw_quad_argb32_alpha)(prim, dstdata, pitch, &setup);
break; break;