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#define __NR_BLIT_C__
/*
* Pixel buffer rendering library
*
* Authors:
* Lauris Kaplinski <lauris@kaplinski.com>
*
* This code is in public domain
*/
#include "nr-pixops.h"
#include "nr-compose.h"
#include "nr-blit.h"
void
nr_blit_pixblock_pixblock_alpha (NRPixBlock *d, NRPixBlock *s, unsigned int alpha)
{
NRRectL clip;
unsigned char *dpx, *spx;
int dbpp, sbpp;
int w, h;
if (alpha == 0) return;
if (s->empty) return;
/* fixme: */
if (s->mode == NR_PIXBLOCK_MODE_A8) return;
/* fixme: */
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8) return;
/*
* Possible variants as of now:
*
* 0. SRC EP - DST EP *
* 1. SRC EP - DST EN *
* 2. SRC EP - DST P *
* 3. SRC EP - DST N *
* 4. SRC EN - DST EP *
* 5. SRC EN - DST EN *
* 6. SRC EN - DST P *
* 7. SRC EN - DST N *
* 8. SRC P - DST EP *
* 9. SRC P - DST EN *
* A. SRC P - DST P *
* B. SRC P - DST N *
* C. SRC N - DST EP *
* D. SRC N - DST EN *
* E. SRC N - DST P *
* F. SRC N - DST N *
*
*/
nr_rect_l_intersect (&clip, &d->area, &s->area);
if (nr_rect_l_test_empty (&clip)) return;
/* Pointers */
dbpp = NR_PIXBLOCK_BPP (d);
dpx = NR_PIXBLOCK_PX (d) + (clip.y0 - d->area.y0) * d->rs + dbpp * (clip.x0 - d->area.x0);
sbpp = NR_PIXBLOCK_BPP (s);
spx = NR_PIXBLOCK_PX (s) + (clip.y0 - s->area.y0) * s->rs + sbpp * (clip.x0 - s->area.x0);
w = clip.x1 - clip.x0;
h = clip.y1 - clip.y0;
switch (d->mode) {
case NR_PIXBLOCK_MODE_A8:
/* No rendering into alpha at moment */
break;
case NR_PIXBLOCK_MODE_R8G8B8:
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
nr_R8G8B8_R8G8B8_R8G8B8A8_P (dpx, w, h, d->rs, spx, s->rs, alpha);
} else {
nr_R8G8B8_R8G8B8_R8G8B8A8_N (dpx, w, h, d->rs, spx, s->rs, alpha);
}
break;
case NR_PIXBLOCK_MODE_R8G8B8A8P:
if (d->empty) {
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
/* Case 8 */
nr_R8G8B8A8_P_EMPTY_R8G8B8A8_P (dpx, w, h, d->rs, spx, s->rs, alpha);
} else {
/* Case C */
nr_R8G8B8A8_P_EMPTY_R8G8B8A8_N (dpx, w, h, d->rs, spx, s->rs, alpha);
}
} else {
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
/* case A */
nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_P (dpx, w, h, d->rs, spx, s->rs, alpha);
} else {
/* case E */
nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_N (dpx, w, h, d->rs, spx, s->rs, alpha);
}
}
break;
case NR_PIXBLOCK_MODE_R8G8B8A8N:
if (d->empty) {
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
/* Case 9 */
nr_R8G8B8A8_N_EMPTY_R8G8B8A8_P (dpx, w, h, d->rs, spx, s->rs, alpha);
} else {
/* Case D */
nr_R8G8B8A8_N_EMPTY_R8G8B8A8_N (dpx, w, h, d->rs, spx, s->rs, alpha);
}
} else {
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
/* case B */
nr_R8G8B8A8_N_R8G8B8A8_N_R8G8B8A8_P (dpx, w, h, d->rs, spx, s->rs, alpha);
} else {
/* case F */
nr_R8G8B8A8_N_R8G8B8A8_N_R8G8B8A8_N (dpx, w, h, d->rs, spx, s->rs, alpha);
}
}
break;
}
}
void
nr_blit_pixblock_pixblock_mask (NRPixBlock *d, NRPixBlock *s, NRPixBlock *m)
{
NRRectL clip;
unsigned char *dpx, *spx, *mpx;
int dbpp, sbpp;
int w, h;
if (s->empty) return;
/* fixme: */
if (s->mode == NR_PIXBLOCK_MODE_A8) return;
/* fixme: */
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8) return;
/*
* Possible variants as of now:
*
* 0. SRC EP - DST EP *
* 1. SRC EP - DST EN *
* 2. SRC EP - DST P *
* 3. SRC EP - DST N *
* 4. SRC EN - DST EP *
* 5. SRC EN - DST EN *
* 6. SRC EN - DST P *
* 7. SRC EN - DST N *
* 8. SRC P - DST EP *
* 9. SRC P - DST EN *
* A. SRC P - DST P *
* B. SRC P - DST N *
* C. SRC N - DST EP *
* D. SRC N - DST EN *
* E. SRC N - DST P *
* F. SRC N - DST N *
*
*/
nr_rect_l_intersect (&clip, &d->area, &s->area);
nr_rect_l_intersect (&clip, &clip, &m->area);
if (nr_rect_l_test_empty (&clip)) return;
/* Pointers */
dbpp = NR_PIXBLOCK_BPP (d);
dpx = NR_PIXBLOCK_PX (d) + (clip.y0 - d->area.y0) * d->rs + dbpp * (clip.x0 - d->area.x0);
sbpp = NR_PIXBLOCK_BPP (s);
spx = NR_PIXBLOCK_PX (s) + (clip.y0 - s->area.y0) * s->rs + sbpp * (clip.x0 - s->area.x0);
mpx = NR_PIXBLOCK_PX (m) + (clip.y0 - m->area.y0) * m->rs + 1 * (clip.x0 - m->area.x0);
w = clip.x1 - clip.x0;
h = clip.y1 - clip.y0;
switch (d->mode) {
case NR_PIXBLOCK_MODE_A8:
/* No rendering into alpha at moment */
break;
case NR_PIXBLOCK_MODE_R8G8B8:
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
nr_R8G8B8_R8G8B8_R8G8B8A8_P_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
} else {
nr_R8G8B8_R8G8B8_R8G8B8A8_N_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
}
break;
case NR_PIXBLOCK_MODE_R8G8B8A8P:
if (d->empty) {
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
/* Case 8 */
nr_R8G8B8A8_P_EMPTY_R8G8B8A8_P_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
} else {
/* Case C */
nr_R8G8B8A8_P_EMPTY_R8G8B8A8_N_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
}
} else {
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
/* case A */
nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_P_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
} else {
/* case E */
nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_N_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
}
}
break;
case NR_PIXBLOCK_MODE_R8G8B8A8N:
if (d->empty) {
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
/* Case 9 */
nr_R8G8B8A8_N_EMPTY_R8G8B8A8_P_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
} else {
/* Case D */
nr_R8G8B8A8_N_EMPTY_R8G8B8A8_N_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
}
} else {
if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
/* case B */
nr_R8G8B8A8_N_R8G8B8A8_N_R8G8B8A8_P_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
} else {
/* case F */
nr_R8G8B8A8_N_R8G8B8A8_N_R8G8B8A8_N_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
}
}
break;
}
}
void
nr_blit_pixblock_mask_rgba32 (NRPixBlock *d, NRPixBlock *m, unsigned long rgba)
{
if (!(rgba & 0xff)) return;
if (m) {
NRRectL clip;
unsigned char *dpx, *mpx;
int w, h;
if (m->mode != NR_PIXBLOCK_MODE_A8) return;
if (!nr_rect_l_test_intersect (&d->area, &m->area)) return;
nr_rect_l_intersect (&clip, &d->area, &m->area);
/* Pointers */
dpx = NR_PIXBLOCK_PX (d) + (clip.y0 - d->area.y0) * d->rs + NR_PIXBLOCK_BPP (d) * (clip.x0 - d->area.x0);
mpx = NR_PIXBLOCK_PX (m) + (clip.y0 - m->area.y0) * m->rs + (clip.x0 - m->area.x0);
w = clip.x1 - clip.x0;
h = clip.y1 - clip.y0;
if (d->empty) {
if (d->mode == NR_PIXBLOCK_MODE_R8G8B8) {
nr_R8G8B8_R8G8B8_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
} else if (d->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
nr_R8G8B8A8_P_EMPTY_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
} else {
nr_R8G8B8A8_N_EMPTY_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
}
d->empty = 0;
} else {
if (d->mode == NR_PIXBLOCK_MODE_R8G8B8) {
nr_R8G8B8_R8G8B8_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
} else if (d->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
nr_R8G8B8A8_P_R8G8B8A8_P_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
} else {
nr_R8G8B8A8_N_R8G8B8A8_N_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
}
}
} else {
unsigned int r, g, b, a;
int x, y;
r = NR_RGBA32_R (rgba);
g = NR_RGBA32_G (rgba);
b = NR_RGBA32_B (rgba);
a = NR_RGBA32_A (rgba);
for (y = d->area.y0; y < d->area.y1; y++) {
unsigned char *p;
p = NR_PIXBLOCK_PX (d) + (y - d->area.y0) * d->rs;
for (x = d->area.x0; x < d->area.x1; x++) {
unsigned int da;
switch (d->mode) {
case NR_PIXBLOCK_MODE_R8G8B8:
p[0] = NR_COMPOSEN11_1111 (r, a, p[0]);
p[1] = NR_COMPOSEN11_1111 (g, a, p[1]);
p[2] = NR_COMPOSEN11_1111 (b, a, p[2]);
p += 3;
break;
case NR_PIXBLOCK_MODE_R8G8B8A8P:
p[0] = NR_COMPOSENPP_1111 (r, a, p[0]);
p[1] = NR_COMPOSENPP_1111 (g, a, p[1]);
p[2] = NR_COMPOSENPP_1111 (b, a, p[2]);
p[3] = NR_COMPOSEA_111(a, p[3]);
p += 4;
break;
case NR_PIXBLOCK_MODE_R8G8B8A8N:
da = NR_COMPOSEA_112(a, p[3]);
p[0] = NR_COMPOSENNN_111121 (r, a, p[0], p[3], da);
p[1] = NR_COMPOSENNN_111121 (g, a, p[1], p[3], da);
p[2] = NR_COMPOSENNN_111121 (b, a, p[2], p[3], da);
p[3] = NR_NORMALIZE_21(da);
p += 4;
break;
default:
break;
}
}
}
}
}
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