Bitmap* PixmanBitmap::Resample(int scale_w, int scale_h, const Rect& src_rect) {
PixmanBitmap *dst = new PixmanBitmap(scale_w, scale_h, GetTransparent());
double zoom_x = (double)src_rect.width / scale_w;
double zoom_y = (double)src_rect.height / scale_h;
pixman_transform_t xform;
pixman_transform_init_scale(&xform,
pixman_double_to_fixed(zoom_x),
pixman_double_to_fixed(zoom_y));
pixman_image_set_transform(bitmap, &xform);
pixman_image_composite32(PIXMAN_OP_SRC,
bitmap, (pixman_image_t*) NULL, dst->bitmap,
src_rect.x, src_rect.y,
0, 0,
0, 0,
scale_w, scale_h);
pixman_transform_init_identity(&xform);
pixman_image_set_transform(bitmap, &xform);
return dst;
}
void
joy_filter_gaussian_set_radius(JoyFilter *self, gdouble radius)
{
g_return_if_fail(JOY_IS_FILTER_GAUSSIAN(self));
struct Private *priv = GET_PRIVATE(self);
g_free(priv->kernel);
gdouble fradius = fabs(radius) + 1.;
gdouble sigma = sqrt(-(fradius * fradius) / (2. * log(1. / 255.)));
const gdouble s2 = 2. * sigma * sigma;
const gdouble s1 = 1. / (G_PI * s2);
const gint size = 2 * radius + 1;
gint n = size * size;
gdouble kernel[n], sum;
gint i, x, y;
for (i = 0, sum = 0, x = -radius; x <= radius; ++x) {
for (y = -radius; y <= radius; ++y, ++i) {
const gdouble u = x * x;
const gdouble v = y * y;
kernel[i] = s1 * exp(-(u + v) / s2);
sum += kernel[i];
}
}
priv->kernel = g_new(pixman_fixed_t, n + 2);
priv->kernel[0] = priv->kernel[1] = pixman_int_to_fixed(size);
for (i = 2; i < n; ++i) {
priv->kernel[i] = pixman_double_to_fixed(kernel[i] / sum);
}
priv->n = n + 2;
priv->radius = radius;
}
int
parse_fixed_argument (char *arg, pixman_fixed_t *value)
{
char *tailptr;
*value = pixman_double_to_fixed (strtod (arg, &tailptr));
return *tailptr == '\0';
}
static void
weston_matrix_to_pixman_transform(pixman_transform_t *pt,
const struct weston_matrix *wm)
{
/* Pixman supports only 2D transform matrix, but Weston uses 3D, *
* so we're omitting Z coordinate here. */
pt->matrix[0][0] = pixman_double_to_fixed(wm->d[0]);
pt->matrix[0][1] = pixman_double_to_fixed(wm->d[4]);
pt->matrix[0][2] = pixman_double_to_fixed(wm->d[12]);
pt->matrix[1][0] = pixman_double_to_fixed(wm->d[1]);
pt->matrix[1][1] = pixman_double_to_fixed(wm->d[5]);
pt->matrix[1][2] = pixman_double_to_fixed(wm->d[13]);
pt->matrix[2][0] = pixman_double_to_fixed(wm->d[3]);
pt->matrix[2][1] = pixman_double_to_fixed(wm->d[7]);
pt->matrix[2][2] = pixman_double_to_fixed(wm->d[15]);
}
void PixmanBitmap::Blit2x(Rect dst_rect, Bitmap* _src, Rect src_rect) {
PixmanBitmap* src = (PixmanBitmap*) _src;
pixman_transform_t xform;
pixman_transform_init_scale(&xform,
pixman_double_to_fixed(0.5),
pixman_double_to_fixed(0.5));
pixman_image_set_transform(src->bitmap, &xform);
pixman_image_composite32(PIXMAN_OP_SRC,
src->bitmap, (pixman_image_t*) NULL, bitmap,
src_rect.x, src_rect.y,
0, 0,
dst_rect.x, dst_rect.y,
dst_rect.width, dst_rect.height);
pixman_transform_init_identity(&xform);
pixman_image_set_transform(src->bitmap, &xform);
RefreshCallback();
}
void PixmanBitmap::StretchBlit(Rect dst_rect, Bitmap* _src, Rect src_rect, int opacity) {
if (opacity < 0)
return;
PixmanBitmap* src = (PixmanBitmap*) _src;
pixman_image_t* mask = (pixman_image_t*) NULL;
if (opacity < 255) {
pixman_color_t tcolor = {0, 0, 0, opacity << 8};
mask = pixman_image_create_solid_fill(&tcolor);
}
double zoom_x = (double)src_rect.width / dst_rect.width;
double zoom_y = (double)src_rect.height / dst_rect.height;
pixman_transform_t xform;
pixman_transform_init_scale(&xform,
pixman_double_to_fixed(zoom_x),
pixman_double_to_fixed(zoom_y));
pixman_image_set_transform(src->bitmap, &xform);
pixman_image_composite32(PIXMAN_OP_OVER,
src->bitmap, mask, bitmap,
src_rect.x / zoom_x, src_rect.y / zoom_y,
0, 0,
dst_rect.x, dst_rect.y,
dst_rect.width, dst_rect.height);
pixman_transform_init_identity(&xform);
pixman_image_set_transform(src->bitmap, &xform);
if (mask != NULL)
pixman_image_unref(mask);
RefreshCallback();
}
void PixmanBitmap::TransformBlit(Rect dst_rect, Bitmap* _src, Rect src_rect, const Matrix& inv, int opacity) {
PixmanBitmap* src = (PixmanBitmap*) _src;
pixman_transform_t xform = {{
{ pixman_double_to_fixed(inv.xx), pixman_double_to_fixed(inv.xy), pixman_double_to_fixed(inv.x0) },
{ pixman_double_to_fixed(inv.yx), pixman_double_to_fixed(inv.yy), pixman_double_to_fixed(inv.y0) },
{ pixman_double_to_fixed(0.0), pixman_double_to_fixed(0.0), pixman_double_to_fixed(1.0) }
}};
pixman_image_set_transform(src->bitmap, &xform);
pixman_image_composite32(PIXMAN_OP_OVER,
src->bitmap, (pixman_image_t*) NULL, bitmap,
dst_rect.x, dst_rect.y,
0, 0,
dst_rect.x, dst_rect.y,
dst_rect.width, dst_rect.height);
pixman_transform_init_identity(&xform);
pixman_image_set_transform(src->bitmap, &xform);
}
/* This test demonstrates that clipping is done totally different depending
* on whether the source is transformed or not.
*/
int
main (int argc, char **argv)
{
#define WIDTH 200
#define HEIGHT 200
#define SMALL 25
uint32_t *sbits = malloc (SMALL * SMALL * 4);
uint32_t *bits = malloc (WIDTH * HEIGHT * 4);
pixman_transform_t trans = {
{
{ pixman_double_to_fixed (1.0), pixman_double_to_fixed (0), pixman_double_to_fixed (-0.1), },
{ pixman_double_to_fixed (0), pixman_double_to_fixed (1), pixman_double_to_fixed (-0.1), },
{ pixman_double_to_fixed (0), pixman_double_to_fixed (0), pixman_double_to_fixed (1.0) }
} };
pixman_image_t *src_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, SMALL, SMALL, sbits, 4 * SMALL);
pixman_image_t *dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, bits, 4 * WIDTH);
memset (bits, 0xff, WIDTH * HEIGHT * 4);
memset (sbits, 0x00, SMALL * SMALL * 4);
pixman_image_composite (PIXMAN_OP_IN,
src_img, NULL, dest_img,
0, 0, 0, 0, SMALL, SMALL, 200, 200);
pixman_image_set_transform (src_img, &trans);
pixman_image_composite (PIXMAN_OP_IN,
src_img, NULL, dest_img,
0, 0, 0, 0, SMALL * 2, SMALL * 2, 200, 200);
show_image (dest_img);
pixman_image_unref (src_img);
pixman_image_unref (dest_img);
free (bits);
return 0;
}
static void process_image_data(struct fp_img_dev *dev, char **output, int *output_height)
{
//pixman stuff taken from libfprint/pixman.c, adapted for my purposes.
pixman_image_t *orig, *resized;
pixman_transform_t transform;
struct vfs0050_dev *vfs_dev = dev->priv;
struct vfs0050_line *line, *calibration_line;
char *buf = malloc(vfs_dev->scanbuf_idx);
int lines = vfs_dev->scanbuf_idx / VFS0050_FRAME_SIZE;
int i, x, sum, last_sum, diff;
int new_height;
//just grab one around middle, there should be 100
calibration_line = (struct vfs0050_line *) ((char *) vfs_dev->calbuf + (50 * VFS0050_FRAME_SIZE));
new_height = 0;
for (i = 0; i < lines; i++) {
line = (struct vfs0050_line *) ((char *) vfs_dev->scanbuf + (i * VFS0050_FRAME_SIZE));
if (!is_noise(line))
memcpy(buf + (new_height++ * VFS0050_IMG_WIDTH), line->row, VFS0050_IMG_WIDTH);
else
fp_dbg("removed noise at line: %d\n", i);
}
orig = pixman_image_create_bits(PIXMAN_a8, VFS0050_IMG_WIDTH, new_height, (uint32_t *) buf, VFS0050_IMG_WIDTH);
new_height *= VFS0050_SCALE_FACTOR; //scale for resized image
resized = pixman_image_create_bits(PIXMAN_a8, VFS0050_IMG_WIDTH, new_height, NULL, VFS0050_IMG_WIDTH);
pixman_transform_init_identity(&transform);
pixman_transform_scale(NULL, &transform, pixman_int_to_fixed(1), pixman_double_to_fixed(0.2));
pixman_image_set_transform(orig, &transform);
pixman_image_set_filter(orig, PIXMAN_FILTER_BEST, NULL, 0);
pixman_image_composite32(PIXMAN_OP_SRC,
orig,
NULL,
resized,
0, 0,
0, 0,
0, 0,
VFS0050_IMG_WIDTH, new_height
);
memcpy(buf, pixman_image_get_data(resized), VFS0050_IMG_WIDTH * new_height);
pixman_image_unref(orig);
pixman_image_unref(resized);
*output_height = new_height;
*output = buf;
}
pixman_fixed_t*
create_gaussian_blur_kernel (gint radius,
gdouble sigma,
gint* length)
{
const gdouble scale2 = 2.0f * sigma * sigma;
const gdouble scale1 = 1.0f / (G_PI * scale2);
const gint size = 2 * radius + 1;
const gint n_params = size * size;
pixman_fixed_t* params;
gdouble* tmp;
gdouble sum;
gint x;
gint y;
gint i;
tmp = g_newa (double, n_params);
// caluclate gaussian kernel in floating point format
for (i = 0, sum = 0, x = -radius; x <= radius; ++x) {
for (y = -radius; y <= radius; ++y, ++i) {
const gdouble u = x * x;
const gdouble v = y * y;
tmp[i] = scale1 * exp (-(u+v)/scale2);
sum += tmp[i];
}
}
// normalize gaussian kernel and convert to fixed point format
params = g_new (pixman_fixed_t, n_params + 2);
params[0] = pixman_int_to_fixed (size);
params[1] = pixman_int_to_fixed (size);
for (i = 0; i < n_params; ++i)
params[2 + i] = pixman_double_to_fixed (tmp[i] / sum);
if (length)
*length = n_params + 2;
return params;
}
static pixman_image_t *
create_radial (int index)
{
pixman_point_fixed_t p0, p1;
pixman_fixed_t r0, r1;
double x0, x1, radius0, radius1, left, right, center;
x0 = 0;
x1 = 1;
radius0 = radiuses[index];
radius1 = radiuses[NUM_GRADIENTS - index - 1];
/* center the gradient */
left = MIN (x0 - radius0, x1 - radius1);
right = MAX (x0 + radius0, x1 + radius1);
center = (left + right) * 0.5;
x0 -= center;
x1 -= center;
/* scale to make it fit within a 1x1 rect centered in (0,0) */
x0 *= 0.25;
x1 *= 0.25;
radius0 *= 0.25;
radius1 *= 0.25;
p0.x = pixman_double_to_fixed (x0);
p0.y = pixman_double_to_fixed (0);
p1.x = pixman_double_to_fixed (x1);
p1.y = pixman_double_to_fixed (0);
r0 = pixman_double_to_fixed (radius0);
r1 = pixman_double_to_fixed (radius1);
return pixman_image_create_radial_gradient (&p0, &p1,
r0, r1,
stops, NUM_STOPS);
}
int
main (int argc, char **argv)
{
pixman_image_t *gradient_img;
pixman_image_t *src_img, *dst_img;
pixman_gradient_stop_t stops[2] =
{
{ pixman_int_to_fixed (0), { 0xffff, 0x0000, 0x0000, 0xffff } },
{ pixman_int_to_fixed (1), { 0xffff, 0xffff, 0x0000, 0xffff } }
};
pixman_point_fixed_t p1 = { 0, 0 };
pixman_point_fixed_t p2 = { pixman_int_to_fixed (WIDTH),
pixman_int_to_fixed (HEIGHT) };
pixman_point_fixed_t c_inner;
pixman_point_fixed_t c_outer;
pixman_fixed_t r_inner;
pixman_fixed_t r_outer;
pixman_region32_t clip_region;
pixman_transform_t trans = {
{ { pixman_double_to_fixed (1.3), pixman_double_to_fixed (0), pixman_double_to_fixed (-0.5), },
{ pixman_double_to_fixed (0), pixman_double_to_fixed (1), pixman_double_to_fixed (-0.5), },
{ pixman_double_to_fixed (0), pixman_double_to_fixed (0), pixman_double_to_fixed (1.0) }
}
};
src_img = create_solid_bits (0xff0000ff);
c_inner.x = pixman_double_to_fixed (100.0);
c_inner.y = pixman_double_to_fixed (100.0);
c_outer.x = pixman_double_to_fixed (100.0);
c_outer.y = pixman_double_to_fixed (100.0);
r_inner = 0;
r_outer = pixman_double_to_fixed (100.0);
gradient_img = pixman_image_create_radial_gradient (&c_inner, &c_outer,
r_inner, r_outer,
stops, 2);
#if 0
gradient_img = pixman_image_create_linear_gradient (&p1, &p2,
stops, 2);
#endif
pixman_image_composite (PIXMAN_OP_OVER, gradient_img, NULL, src_img,
0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
pixman_region32_init_rect (&clip_region, 50, 0, 100, 200);
pixman_image_set_clip_region32 (src_img, &clip_region);
pixman_image_set_source_clipping (src_img, TRUE);
pixman_image_set_has_client_clip (src_img, TRUE);
pixman_image_set_transform (src_img, &trans);
pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NORMAL);
dst_img = create_solid_bits (0xffff0000);
pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dst_img,
0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
#if 0
printf ("0, 0: %x\n", src[0]);
printf ("10, 10: %x\n", src[10 * 10 + 10]);
printf ("w, h: %x\n", src[(HEIGHT - 1) * 100 + (WIDTH - 1)]);
#endif
show_image (dst_img);
pixman_image_unref (gradient_img);
pixman_image_unref (src_img);
return 0;
}
static uint32_t *
conical_get_scanline_narrow (pixman_iter_t *iter, const uint32_t *mask)
{
pixman_image_t *image = iter->image;
int x = iter->x;
int y = iter->y;
int width = iter->width;
uint32_t *buffer = iter->buffer;
gradient_t *gradient = (gradient_t *)image;
conical_gradient_t *conical = (conical_gradient_t *)image;
uint32_t *end = buffer + width;
pixman_gradient_walker_t walker;
pixman_bool_t affine = TRUE;
double cx = 1.;
double cy = 0.;
double cz = 0.;
double rx = x + 0.5;
double ry = y + 0.5;
double rz = 1.;
_pixman_gradient_walker_init (&walker, gradient, image->common.repeat);
if (image->common.transform)
{
pixman_vector_t v;
/* reference point is the center of the pixel */
v.vector[0] = pixman_int_to_fixed (x) + pixman_fixed_1 / 2;
v.vector[1] = pixman_int_to_fixed (y) + pixman_fixed_1 / 2;
v.vector[2] = pixman_fixed_1;
if (!pixman_transform_point_3d (image->common.transform, &v))
return iter->buffer;
cx = image->common.transform->matrix[0][0] / 65536.;
cy = image->common.transform->matrix[1][0] / 65536.;
cz = image->common.transform->matrix[2][0] / 65536.;
rx = v.vector[0] / 65536.;
ry = v.vector[1] / 65536.;
rz = v.vector[2] / 65536.;
affine =
image->common.transform->matrix[2][0] == 0 &&
v.vector[2] == pixman_fixed_1;
}
if (affine)
{
rx -= conical->center.x / 65536.;
ry -= conical->center.y / 65536.;
while (buffer < end)
{
if (!mask || *mask++)
{
double t = coordinates_to_parameter (rx, ry, conical->angle);
*buffer = _pixman_gradient_walker_pixel (
&walker, (pixman_fixed_48_16_t)pixman_double_to_fixed (t));
}
++buffer;
rx += cx;
ry += cy;
}
}
else
{
while (buffer < end)
{
double x, y;
if (!mask || *mask++)
{
double t;
if (rz != 0)
{
x = rx / rz;
y = ry / rz;
}
else
{
x = y = 0.;
}
x -= conical->center.x / 65536.;
y -= conical->center.y / 65536.;
t = coordinates_to_parameter (x, y, conical->angle);
*buffer = _pixman_gradient_walker_pixel (
&walker, (pixman_fixed_48_16_t)pixman_double_to_fixed (t));
}
++buffer;
rx += cx;
ry += cy;
rz += cz;
}
}
iter->y++;
return iter->buffer;
}
int
main (int argc, char **argv)
{
#define WIDTH 400
#define HEIGHT 200
uint32_t *dest = malloc (WIDTH * HEIGHT * 4);
pixman_image_t *src_img;
pixman_image_t *dest_img;
int i, j, k, p;
typedef struct
{
pixman_point_fixed_t p0;
pixman_point_fixed_t p1;
} point_pair_t;
pixman_gradient_stop_t onestop[1] =
{
{ pixman_int_to_fixed (1), { 0xffff, 0xeeee, 0xeeee, 0xeeee } },
};
pixman_gradient_stop_t subsetstops[2] =
{
{ pixman_int_to_fixed (1), { 0xffff, 0xeeee, 0xeeee, 0xeeee } },
{ pixman_int_to_fixed (1), { 0xffff, 0xeeee, 0xeeee, 0xeeee } },
};
pixman_gradient_stop_t stops01[2] =
{
{ pixman_int_to_fixed (0), { 0xffff, 0xeeee, 0xeeee, 0xeeee } },
{ pixman_int_to_fixed (1), { 0xffff, 0x1111, 0x1111, 0x1111 } }
};
point_pair_t point_pairs [] =
{ { { pixman_double_to_fixed (0), 0 },
{ pixman_double_to_fixed (WIDTH / 8.), pixman_int_to_fixed (0) } },
{ { pixman_double_to_fixed (WIDTH / 2.0), pixman_double_to_fixed (HEIGHT / 2.0) },
{ pixman_double_to_fixed (WIDTH / 2.0), pixman_double_to_fixed (HEIGHT / 2.0) } }
};
pixman_transform_t transformations[] = {
{
{ { pixman_double_to_fixed (2), pixman_double_to_fixed (0.5), pixman_double_to_fixed (-100), },
{ pixman_double_to_fixed (0), pixman_double_to_fixed (3), pixman_double_to_fixed (0), },
{ pixman_double_to_fixed (0), pixman_double_to_fixed (0.000), pixman_double_to_fixed (1.0) }
}
},
{
{ { pixman_double_to_fixed (1), pixman_double_to_fixed (0), pixman_double_to_fixed (0), },
{ pixman_double_to_fixed (0), pixman_double_to_fixed (1), pixman_double_to_fixed (0), },
{ pixman_double_to_fixed (0), pixman_double_to_fixed (0.000), pixman_double_to_fixed (1.0) }
}
},
{
{ { pixman_double_to_fixed (2), pixman_double_to_fixed (1), pixman_double_to_fixed (0), },
{ pixman_double_to_fixed (1), pixman_double_to_fixed (1), pixman_double_to_fixed (0), },
{ pixman_double_to_fixed (2), pixman_double_to_fixed (1.000), pixman_double_to_fixed (1.0) }
}
},
{
{ { pixman_double_to_fixed (2), pixman_double_to_fixed (1), pixman_double_to_fixed (0), },
{ pixman_double_to_fixed (1), pixman_double_to_fixed (1), pixman_double_to_fixed (0), },
{ pixman_double_to_fixed (0), pixman_double_to_fixed (0), pixman_double_to_fixed (0) }
}
},
{
{ { pixman_double_to_fixed (2), pixman_double_to_fixed (1), pixman_double_to_fixed (0), },
{ pixman_double_to_fixed (1), pixman_double_to_fixed (1), pixman_double_to_fixed (0), },
{ pixman_double_to_fixed (2), pixman_double_to_fixed (-1), pixman_double_to_fixed (0) }
}
},
{
{ { pixman_double_to_fixed (2), pixman_double_to_fixed (1), pixman_double_to_fixed (3), },
{ pixman_double_to_fixed (1), pixman_double_to_fixed (1), pixman_double_to_fixed (0), },
{ pixman_double_to_fixed (2), pixman_double_to_fixed (-1), pixman_double_to_fixed (0) }
}
},
};
pixman_fixed_t r_inner;
pixman_fixed_t r_outer;
enable_divbyzero_exceptions();
for (i = 0; i < WIDTH * HEIGHT; ++i)
dest[i] = 0x4f00004f; /* pale blue */
dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
WIDTH, HEIGHT,
dest,
WIDTH * 4);
r_inner = 0;
r_outer = pixman_double_to_fixed (50.0);
for (i = 0; i < 3; ++i)
{
pixman_gradient_stop_t *stops;
int num_stops;
if (i == 0)
{
stops = onestop;
num_stops = ARRAY_LENGTH (onestop);
}
else if (i == 1)
{
stops = subsetstops;
num_stops = ARRAY_LENGTH (subsetstops);
}
else
{
stops = stops01;
num_stops = ARRAY_LENGTH (stops01);
}
for (j = 0; j < 3; ++j)
{
for (p = 0; p < ARRAY_LENGTH (point_pairs); ++p)
{
point_pair_t *pair = &(point_pairs[p]);
if (j == 0)
src_img = pixman_image_create_conical_gradient (&(pair->p0), r_inner,
stops, num_stops);
else if (j == 1)
src_img = pixman_image_create_radial_gradient (&(pair->p0), &(pair->p1),
r_inner, r_outer,
stops, num_stops);
else
src_img = pixman_image_create_linear_gradient (&(pair->p0), &(pair->p1),
stops, num_stops);
for (k = 0; k < ARRAY_LENGTH (transformations); ++k)
{
pixman_image_set_transform (src_img, &transformations[k]);
pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NONE);
pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dest_img,
0, 0, 0, 0, 0, 0, 10 * WIDTH, HEIGHT);
}
pixman_image_unref (src_img);
}
}
}
pixman_image_unref (dest_img);
free (dest);
return 0;
}
int
main (int argc, char **argv)
{
#define WIDTH 400
#define HEIGHT 200
uint32_t *alpha = malloc (WIDTH * HEIGHT * 4);
uint32_t *dest = malloc (WIDTH * HEIGHT * 4);
uint32_t *src = malloc (WIDTH * HEIGHT * 4);
pixman_image_t *grad_img;
pixman_image_t *alpha_img;
pixman_image_t *dest_img;
pixman_image_t *src_img;
int i;
pixman_gradient_stop_t stops[2] =
{
{ pixman_int_to_fixed (0), { 0x0000, 0x0000, 0x0000, 0x0000 } },
{ pixman_int_to_fixed (1), { 0xffff, 0x0000, 0x1111, 0xffff } }
};
pixman_point_fixed_t p1 = { pixman_double_to_fixed (0), 0 };
pixman_point_fixed_t p2 = { pixman_double_to_fixed (WIDTH),
pixman_int_to_fixed (0) };
#if 0
pixman_transform_t trans = {
{ { pixman_double_to_fixed (2), pixman_double_to_fixed (0.5), pixman_double_to_fixed (-100), },
{ pixman_double_to_fixed (0), pixman_double_to_fixed (3), pixman_double_to_fixed (0), },
{ pixman_double_to_fixed (0), pixman_double_to_fixed (0.000), pixman_double_to_fixed (1.0) }
}
};
#else
pixman_transform_t trans = {
{ { pixman_fixed_1, 0, 0 },
{ 0, pixman_fixed_1, 0 },
{ 0, 0, pixman_fixed_1 } }
};
#endif
pixman_point_fixed_t c_inner;
pixman_point_fixed_t c_outer;
pixman_fixed_t r_inner;
pixman_fixed_t r_outer;
for (i = 0; i < WIDTH * HEIGHT; ++i)
alpha[i] = 0x4f00004f; /* pale blue */
alpha_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
WIDTH, HEIGHT,
alpha,
WIDTH * 4);
for (i = 0; i < WIDTH * HEIGHT; ++i)
dest[i] = 0xffffff00; /* yellow */
dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
WIDTH, HEIGHT,
dest,
WIDTH * 4);
for (i = 0; i < WIDTH * HEIGHT; ++i)
src[i] = 0xffff0000;
src_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
WIDTH, HEIGHT,
src,
WIDTH * 4);
c_inner.x = pixman_double_to_fixed (50.0);
c_inner.y = pixman_double_to_fixed (50.0);
c_outer.x = pixman_double_to_fixed (50.0);
c_outer.y = pixman_double_to_fixed (50.0);
r_inner = 0;
r_outer = pixman_double_to_fixed (50.0);
#if 0
grad_img = pixman_image_create_conical_gradient (&c_inner, r_inner,
stops, 2);
#endif
#if 0
grad_img = pixman_image_create_conical_gradient (&c_inner, r_inner,
stops, 2);
grad_img = pixman_image_create_linear_gradient (&c_inner, &c_outer,
r_inner, r_outer,
stops, 2);
#endif
grad_img = pixman_image_create_linear_gradient (&p1, &p2,
stops, 2);
pixman_image_set_transform (grad_img, &trans);
pixman_image_set_repeat (grad_img, PIXMAN_REPEAT_PAD);
pixman_image_composite (PIXMAN_OP_OVER, grad_img, NULL, alpha_img,
0, 0, 0, 0, 0, 0, 10 * WIDTH, HEIGHT);
pixman_image_set_alpha_map (src_img, alpha_img, 10, 10);
pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dest_img,
0, 0, 0, 0, 0, 0, 10 * WIDTH, HEIGHT);
printf ("0, 0: %x\n", dest[0]);
printf ("10, 10: %x\n", dest[10 * 10 + 10]);
printf ("w, h: %x\n", dest[(HEIGHT - 1) * 100 + (WIDTH - 1)]);
show_image (dest_img);
pixman_image_unref (src_img);
pixman_image_unref (grad_img);
pixman_image_unref (alpha_img);
free (dest);
return 0;
}
static void
repaint_region(struct weston_view *ev, struct weston_output *output,
pixman_region32_t *region, pixman_region32_t *surf_region,
pixman_op_t pixman_op)
{
struct pixman_renderer *pr =
(struct pixman_renderer *) output->compositor->renderer;
struct pixman_surface_state *ps = get_surface_state(ev->surface);
struct pixman_output_state *po = get_output_state(output);
pixman_region32_t final_region;
float view_x, view_y;
pixman_transform_t transform;
pixman_fixed_t fw, fh;
/* The final region to be painted is the intersection of
* 'region' and 'surf_region'. However, 'region' is in the global
* coordinates, and 'surf_region' is in the surface-local
* coordinates
*/
pixman_region32_init(&final_region);
if (surf_region) {
pixman_region32_copy(&final_region, surf_region);
/* Convert from surface to global coordinates */
if (!ev->transform.enabled) {
pixman_region32_translate(&final_region, ev->geometry.x, ev->geometry.y);
} else {
weston_view_to_global_float(ev, 0, 0, &view_x, &view_y);
pixman_region32_translate(&final_region, (int)view_x, (int)view_y);
}
/* We need to paint the intersection */
pixman_region32_intersect(&final_region, &final_region, region);
} else {
/* If there is no surface region, just use the global region */
pixman_region32_copy(&final_region, region);
}
/* Convert from global to output coord */
region_global_to_output(output, &final_region);
/* And clip to it */
pixman_image_set_clip_region32 (po->shadow_image, &final_region);
/* Set up the source transformation based on the surface
position, the output position/transform/scale and the client
specified buffer transform/scale */
pixman_transform_init_identity(&transform);
pixman_transform_scale(&transform, NULL,
pixman_double_to_fixed ((double)1.0/output->current_scale),
pixman_double_to_fixed ((double)1.0/output->current_scale));
fw = pixman_int_to_fixed(output->width);
fh = pixman_int_to_fixed(output->height);
switch (output->transform) {
default:
case WL_OUTPUT_TRANSFORM_NORMAL:
case WL_OUTPUT_TRANSFORM_FLIPPED:
break;
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
pixman_transform_rotate(&transform, NULL, 0, -pixman_fixed_1);
pixman_transform_translate(&transform, NULL, 0, fh);
break;
case WL_OUTPUT_TRANSFORM_180:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
pixman_transform_rotate(&transform, NULL, -pixman_fixed_1, 0);
pixman_transform_translate(&transform, NULL, fw, fh);
break;
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
pixman_transform_rotate(&transform, NULL, 0, pixman_fixed_1);
pixman_transform_translate(&transform, NULL, fw, 0);
break;
}
switch (output->transform) {
case WL_OUTPUT_TRANSFORM_FLIPPED:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
pixman_transform_scale(&transform, NULL,
pixman_int_to_fixed (-1),
pixman_int_to_fixed (1));
pixman_transform_translate(&transform, NULL, fw, 0);
break;
}
pixman_transform_translate(&transform, NULL,
pixman_double_to_fixed (output->x),
pixman_double_to_fixed (output->y));
if (ev->transform.enabled) {
/* Pixman supports only 2D transform matrix, but Weston uses 3D,
* so we're omitting Z coordinate here
*/
pixman_transform_t surface_transform = {{
{ D2F(ev->transform.matrix.d[0]),
D2F(ev->transform.matrix.d[4]),
D2F(ev->transform.matrix.d[12]),
},
{ D2F(ev->transform.matrix.d[1]),
D2F(ev->transform.matrix.d[5]),
D2F(ev->transform.matrix.d[13]),
},
{ D2F(ev->transform.matrix.d[3]),
D2F(ev->transform.matrix.d[7]),
D2F(ev->transform.matrix.d[15]),
}
}};
pixman_transform_invert(&surface_transform, &surface_transform);
pixman_transform_multiply (&transform, &surface_transform, &transform);
} else {
pixman_transform_translate(&transform, NULL,
pixman_double_to_fixed ((double)-ev->geometry.x),
pixman_double_to_fixed ((double)-ev->geometry.y));
}
if (ev->surface->buffer_viewport.scaler_set) {
double scaler_x, scaler_y, scaler_width, scaler_height;
double ratio_x, ratio_y;
scaler_x = wl_fixed_to_double(ev->surface->buffer_viewport.src_x);
scaler_y = wl_fixed_to_double(ev->surface->buffer_viewport.src_y);
scaler_width = wl_fixed_to_double(ev->surface->buffer_viewport.src_width);
scaler_height = wl_fixed_to_double(ev->surface->buffer_viewport.src_height);
ratio_x = scaler_width / ev->surface->buffer_viewport.dst_width;
ratio_y = scaler_height / ev->surface->buffer_viewport.dst_height;
pixman_transform_scale(&transform, NULL,
pixman_double_to_fixed(ratio_x),
pixman_double_to_fixed(ratio_y));
pixman_transform_translate(&transform, NULL, pixman_double_to_fixed(scaler_x),
pixman_double_to_fixed(scaler_y));
}
pixman_transform_scale(&transform, NULL,
pixman_double_to_fixed(ev->surface->buffer_viewport.scale),
pixman_double_to_fixed(ev->surface->buffer_viewport.scale));
fw = pixman_int_to_fixed(pixman_image_get_width(ps->image));
fh = pixman_int_to_fixed(pixman_image_get_height(ps->image));
switch (ev->surface->buffer_viewport.transform) {
case WL_OUTPUT_TRANSFORM_FLIPPED:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
pixman_transform_scale(&transform, NULL,
pixman_int_to_fixed (-1),
pixman_int_to_fixed (1));
pixman_transform_translate(&transform, NULL, fw, 0);
break;
}
switch (ev->surface->buffer_viewport.transform) {
default:
case WL_OUTPUT_TRANSFORM_NORMAL:
case WL_OUTPUT_TRANSFORM_FLIPPED:
break;
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
pixman_transform_rotate(&transform, NULL, 0, pixman_fixed_1);
pixman_transform_translate(&transform, NULL, fh, 0);
break;
case WL_OUTPUT_TRANSFORM_180:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
pixman_transform_rotate(&transform, NULL, -pixman_fixed_1, 0);
pixman_transform_translate(&transform, NULL, fw, fh);
break;
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
pixman_transform_rotate(&transform, NULL, 0, -pixman_fixed_1);
pixman_transform_translate(&transform, NULL, 0, fw);
break;
}
pixman_image_set_transform(ps->image, &transform);
if (ev->transform.enabled || output->current_scale != ev->surface->buffer_viewport.scale)
pixman_image_set_filter(ps->image, PIXMAN_FILTER_BILINEAR, NULL, 0);
else
pixman_image_set_filter(ps->image, PIXMAN_FILTER_NEAREST, NULL, 0);
if (ps->buffer_ref.buffer)
wl_shm_buffer_begin_access(ps->buffer_ref.buffer->shm_buffer);
pixman_image_composite32(pixman_op,
ps->image, /* src */
NULL /* mask */,
po->shadow_image, /* dest */
0, 0, /* src_x, src_y */
0, 0, /* mask_x, mask_y */
0, 0, /* dest_x, dest_y */
pixman_image_get_width (po->shadow_image), /* width */
pixman_image_get_height (po->shadow_image) /* height */);
if (ps->buffer_ref.buffer)
wl_shm_buffer_end_access(ps->buffer_ref.buffer->shm_buffer);
if (pr->repaint_debug)
pixman_image_composite32(PIXMAN_OP_OVER,
pr->debug_color, /* src */
NULL /* mask */,
po->shadow_image, /* dest */
0, 0, /* src_x, src_y */
0, 0, /* mask_x, mask_y */
0, 0, /* dest_x, dest_y */
pixman_image_get_width (po->shadow_image), /* width */
pixman_image_get_height (po->shadow_image) /* height */);
pixman_image_set_clip_region32 (po->shadow_image, NULL);
pixman_region32_fini(&final_region);
}
int
main (int argc, char **argv)
{
pixman_transform_t transform;
pixman_image_t *src_img, *dest_img;
int i, j;
enable_fp_exceptions ();
dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
WIDTH, HEIGHT,
NULL, 0);
pixman_transform_init_identity (&transform);
/*
* The create_radial() function returns gradients centered in the
* origin and whose interesting part fits a 1x1 square. We want to
* paint these gradients on a SIZExSIZE square and to make things
* easier we want the origin in the top-left corner of the square
* we want to see.
*/
pixman_transform_translate (NULL, &transform,
pixman_double_to_fixed (0.5),
pixman_double_to_fixed (0.5));
pixman_transform_scale (NULL, &transform,
pixman_double_to_fixed (SIZE),
pixman_double_to_fixed (SIZE));
/*
* Gradients are evaluated at the center of each pixel, so we need
* to translate by half a pixel to trigger some interesting
* cornercases. In particular, the original implementation of PDF
* radial gradients tried to divide by 0 when using this transform
* on the "tangent circles" cases.
*/
pixman_transform_translate (NULL, &transform,
pixman_double_to_fixed (0.5),
pixman_double_to_fixed (0.5));
for (i = 0; i < NUM_GRADIENTS; i++)
{
src_img = create_radial (i);
pixman_image_set_transform (src_img, &transform);
for (j = 0; j < NUM_REPEAT; j++)
{
pixman_image_set_repeat (src_img, repeat[j]);
pixman_image_composite32 (PIXMAN_OP_OVER,
src_img,
NULL,
dest_img,
0, 0,
0, 0,
i * SIZE, j * SIZE,
SIZE, SIZE);
}
pixman_image_unref (src_img);
}
show_image (dest_img);
pixman_image_unref (dest_img);
return 0;
}