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Fixed ViRGE blitter memory masking when only 2MB video memory available.

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This commit is contained in:
SarahW 2018-03-21 21:53:33 +00:00
commit cb4c92c0f2
1 changed files with 17 additions and 15 deletions
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32
src/vid_s3_virge.c
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@ -1826,20 +1826,20 @@ static void s3_virge_mmio_write_l(uint32_t addr, uint32_t val, void *p)
switch (bpp) \
{ \
case 0: /*8 bpp*/ \
val = vram[addr & 0x3fffff]; \
val = vram[addr & svga->vram_mask]; \
break; \
case 1: /*16 bpp*/ \
val = *(uint16_t *)&vram[addr & 0x3fffff]; \
val = *(uint16_t *)&vram[addr & svga->vram_mask]; \
break; \
case 2: /*24 bpp*/ \
val = (*(uint32_t *)&vram[addr & 0x3fffff]) & 0xffffff; \
val = (*(uint32_t *)&vram[addr & svga->vram_mask]) & 0xffffff; \
break; \
} \
} while (0)
#define Z_READ(addr) *(uint16_t *)&vram[addr & 0x3fffff]
#define Z_READ(addr) *(uint16_t *)&vram[addr & svga->vram_mask]
#define Z_WRITE(addr, val) if (!(s3d_tri->cmd_set & CMD_SET_ZB_MODE)) *(uint16_t *)&vram[addr & 0x3fffff] = val
#define Z_WRITE(addr, val) if (!(s3d_tri->cmd_set & CMD_SET_ZB_MODE)) *(uint16_t *)&vram[addr & svga->vram_mask] = val
#define CLIP(x, y) \
do \
@ -1899,23 +1899,24 @@ static void s3_virge_mmio_write_l(uint32_t addr, uint32_t val, void *p)
switch (bpp) \
{ \
case 0: /*8 bpp*/ \
vram[addr & 0x3fffff] = val; \
virge->svga.changedvram[(addr & 0x3fffff) >> 12] = changeframecount; \
vram[addr & svga->vram_mask] = val; \
virge->svga.changedvram[(addr & svga->vram_mask) >> 12] = changeframecount; \
break; \
case 1: /*16 bpp*/ \
*(uint16_t *)&vram[addr & 0x3fffff] = val; \
virge->svga.changedvram[(addr & 0x3fffff) >> 12] = changeframecount; \
*(uint16_t *)&vram[addr & svga->vram_mask] = val; \
virge->svga.changedvram[(addr & svga->vram_mask) >> 12] = changeframecount; \
break; \
case 2: /*24 bpp*/ \
*(uint32_t *)&vram[addr & 0x3fffff] = (val & 0xffffff) | \
(vram[(addr + 3) & 0x3fffff] << 24); \
virge->svga.changedvram[(addr & 0x3fffff) >> 12] = changeframecount; \
*(uint32_t *)&vram[addr & svga->vram_mask] = (val & 0xffffff) | \
(vram[(addr + 3) & svga->vram_mask] << 24); \
virge->svga.changedvram[(addr & svga->vram_mask) >> 12] = changeframecount; \
break; \
} \
} while (0)
static void s3_virge_bitblt(virge_t *virge, int count, uint32_t cpu_dat)
{
svga_t *svga = &virge->svga;
uint8_t *vram = virge->svga.vram;
uint32_t mono_pattern[64];
int count_mask;
@ -2930,6 +2931,7 @@ static void dest_pixel_lit_texture_modulate(s3d_state_t *state)
static void tri(virge_t *virge, s3d_t *s3d_tri, s3d_state_t *state, int yc, int32_t dx1, int32_t dx2)
{
svga_t *svga = &virge->svga;
uint8_t *vram = virge->svga.vram;
int x_dir = s3d_tri->tlr ? 1 : -1;
@ -3061,7 +3063,7 @@ static void tri(virge_t *virge, s3d_t *s3d_tri, s3d_state_t *state, int yc, int3
}
}
virge->svga.changedvram[(dest_offset & 0x3fffff) >> 12] = changeframecount;
virge->svga.changedvram[(dest_offset & svga->vram_mask) >> 12] = changeframecount;
dest_addr = dest_offset + (x * (bpp + 1));
z_addr = z_offset + (x << 1);
@ -3095,11 +3097,11 @@ static void tri(virge_t *virge, s3d_t *s3d_tri, s3d_state_t *state, int yc, int3
/*Not implemented yet*/
break;
case 1: /*16 bpp*/
src_col = *(uint16_t *)&vram[dest_addr & 0x3fffff];
src_col = *(uint16_t *)&vram[dest_addr & svga->vram_mask];
RGB15_TO_24(src_col, src_r, src_g, src_b);
break;
case 2: /*24 bpp*/
src_col = (*(uint32_t *)&vram[dest_addr & 0x3fffff]) & 0xffffff;
src_col = (*(uint32_t *)&vram[dest_addr & svga->vram_mask]) & 0xffffff;
RGB24_TO_24(src_col, src_r, src_g, src_b);
break;
}