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more correct display functions

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2149 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2006-09-09 11:31:34 +00:00
parent 094eed6ca5
commit 21206a104f
1 changed files with 56 additions and 12 deletions
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68
hw/tcx.c
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@ -34,11 +34,55 @@ typedef struct TCXState {
ram_addr_t vram_offset;
uint16_t width, height;
uint8_t r[256], g[256], b[256];
uint32_t palette[256];
uint8_t dac_index, dac_state;
} TCXState;
static void tcx_screen_dump(void *opaque, const char *filename);
/* XXX: unify with vga draw line functions */
static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
{
return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
}
static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
{
return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
}
static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
{
return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
}
static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
{
return (r << 16) | (g << 8) | b;
}
static void update_palette_entries(TCXState *s, int start, int end)
{
int i;
for(i = start; i < end; i++) {
switch(s->ds->depth) {
default:
case 8:
s->palette[i] = rgb_to_pixel8(s->r[i], s->g[i], s->b[i]);
break;
case 15:
s->palette[i] = rgb_to_pixel15(s->r[i], s->g[i], s->b[i]);
break;
case 16:
s->palette[i] = rgb_to_pixel16(s->r[i], s->g[i], s->b[i]);
break;
case 32:
s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
break;
}
}
}
static void tcx_draw_line32(TCXState *s1, uint8_t *d,
const uint8_t *s, int width)
{
@ -47,14 +91,11 @@ static void tcx_draw_line32(TCXState *s1, uint8_t *d,
for(x = 0; x < width; x++) {
val = *s++;
*d++ = s1->b[val];
*d++ = s1->g[val];
*d++ = s1->r[val];
d++;
*((uint32_t *)d)++ = s1->palette[val];
}
}
static void tcx_draw_line24(TCXState *s1, uint8_t *d,
static void tcx_draw_line16(TCXState *s1, uint8_t *d,
const uint8_t *s, int width)
{
int x;
@ -62,9 +103,7 @@ static void tcx_draw_line24(TCXState *s1, uint8_t *d,
for(x = 0; x < width; x++) {
val = *s++;
*d++ = s1->b[val];
*d++ = s1->g[val];
*d++ = s1->r[val];
*((uint16_t *)d)++ = s1->palette[val];
}
}
@ -76,8 +115,7 @@ static void tcx_draw_line8(TCXState *s1, uint8_t *d,
for(x = 0; x < width; x++) {
val = *s++;
/* XXX translate between palettes? */
*d++ = val;
*d++ = s1->palette[val];
}
}
@ -106,8 +144,9 @@ static void tcx_update_display(void *opaque)
case 32:
f = tcx_draw_line32;
break;
case 24:
f = tcx_draw_line24;
case 15:
case 16:
f = tcx_draw_line16;
break;
default:
case 8:
@ -201,6 +240,7 @@ static int tcx_load(QEMUFile *f, void *opaque, int version_id)
qemu_get_buffer(f, s->b, 256);
qemu_get_8s(f, &s->dac_index);
qemu_get_8s(f, &s->dac_state);
update_palette_entries(s, 0, 256);
return 0;
}
@ -213,6 +253,7 @@ static void tcx_reset(void *opaque)
memset(s->g, 0, 256);
memset(s->b, 0, 256);
s->r[255] = s->g[255] = s->b[255] = 255;
update_palette_entries(s, 0, 256);
memset(s->vram, 0, MAXX*MAXY);
cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset + MAXX*MAXY,
VGA_DIRTY_FLAG);
@ -240,14 +281,17 @@ static void tcx_dac_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
switch (s->dac_state) {
case 0:
s->r[s->dac_index] = val >> 24;
update_palette_entries(s, s->dac_index, s->dac_index + 1);
s->dac_state++;
break;
case 1:
s->g[s->dac_index] = val >> 24;
update_palette_entries(s, s->dac_index, s->dac_index + 1);
s->dac_state++;
break;
case 2:
s->b[s->dac_index] = val >> 24;
update_palette_entries(s, s->dac_index, s->dac_index + 1);
default:
s->dac_state = 0;
break;