static void
fz_paint_quad(fz_pixmap *pix,
fz_point p0, fz_point p1, fz_point p2, fz_point p3,
float c0, float c1, float c2, float c3,
int n, fz_bbox bbox)
{
float v[4][3];
v[0][0] = p0.x;
v[0][1] = p0.y;
v[0][2] = c0;
v[1][0] = p1.x;
v[1][1] = p1.y;
v[1][2] = c1;
v[2][0] = p2.x;
v[2][1] = p2.y;
v[2][2] = c2;
v[3][0] = p3.x;
v[3][1] = p3.y;
v[3][2] = c3;
fz_paint_triangle(pix, v[0], v[2], v[3], n, bbox);
fz_paint_triangle(pix, v[0], v[3], v[1], n, bbox);
}
static void
fz_paint_mesh(fz_shade *shade, fz_matrix ctm, fz_pixmap *dest, fz_bbox bbox)
{
float tri[3][MAXN];
fz_point p;
float *mesh;
int ntris;
int i, k;
mesh = shade->mesh;
if (shade->use_function)
ntris = shade->mesh_len / 9;
else
ntris = shade->mesh_len / ((2 + shade->colorspace->n) * 3);
while (ntris--)
{
for (k = 0; k < 3; k++)
{
p.x = *mesh++;
p.y = *mesh++;
p = fz_transform_point(ctm, p);
tri[k][0] = p.x;
tri[k][1] = p.y;
if (shade->use_function)
tri[k][2] = *mesh++ * 255;
else
{
fz_convert_color(shade->colorspace, mesh, dest->colorspace, tri[k] + 2);
for (i = 0; i < dest->colorspace->n; i++)
tri[k][i + 2] *= 255;
mesh += shade->colorspace->n;
}
}
fz_paint_triangle(dest, tri[0], tri[1], tri[2], 2 + dest->colorspace->n, bbox);
}
}
static void
do_paint_tri(void *arg, fz_vertex *av, fz_vertex *bv, fz_vertex *cv)
{
struct paint_tri_data *ptd = (struct paint_tri_data *)arg;
int i, k;
fz_vertex *vertices[3];
fz_vertex *v;
float *ltri;
fz_context *ctx;
fz_shade *shade;
fz_pixmap *dest;
float local[3][MAXN];
vertices[0] = av;
vertices[1] = bv;
vertices[2] = cv;
dest = ptd->dest;
ctx = ptd->ctx;
shade = ptd->shade;
for (k = 0; k < 3; k++)
{
v = vertices[k];
ltri = &local[k][0];
ltri[0] = v->p.x;
ltri[1] = v->p.y;
if (shade->use_function)
ltri[2] = v->c[0] * 255;
else
{
fz_convert_color(ctx, dest->colorspace, <ri[2], shade->colorspace, v->c);
for (i = 0; i < dest->colorspace->n; i++)
ltri[i + 2] *= 255;
}
}
fz_paint_triangle(dest, local, 2 + dest->colorspace->n, ptd->bbox);
}
