static force_inline void
get_shifts (pixman_format_code_t format,
int *a,
int *r,
int *g,
int *b)
{
switch (PIXMAN_FORMAT_TYPE (format))
{
case PIXMAN_TYPE_A:
*b = 0;
*g = 0;
*r = 0;
*a = 0;
break;
case PIXMAN_TYPE_ARGB:
case PIXMAN_TYPE_ARGB_SRGB:
*b = 0;
*g = *b + PIXMAN_FORMAT_B (format);
*r = *g + PIXMAN_FORMAT_G (format);
*a = *r + PIXMAN_FORMAT_R (format);
break;
case PIXMAN_TYPE_ABGR:
*r = 0;
*g = *r + PIXMAN_FORMAT_R (format);
*b = *g + PIXMAN_FORMAT_G (format);
*a = *b + PIXMAN_FORMAT_B (format);
break;
case PIXMAN_TYPE_BGRA:
/* With BGRA formats we start counting at the high end of the pixel */
*b = PIXMAN_FORMAT_BPP (format) - PIXMAN_FORMAT_B (format);
*g = *b - PIXMAN_FORMAT_B (format);
*r = *g - PIXMAN_FORMAT_G (format);
*a = *r - PIXMAN_FORMAT_R (format);
break;
case PIXMAN_TYPE_RGBA:
/* With BGRA formats we start counting at the high end of the pixel */
*r = PIXMAN_FORMAT_BPP (format) - PIXMAN_FORMAT_R (format);
*g = *r - PIXMAN_FORMAT_R (format);
*b = *g - PIXMAN_FORMAT_G (format);
*a = *b - PIXMAN_FORMAT_B (format);
break;
default:
assert (0);
break;
}
}
PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format)
{
PixelFormat pf;
uint8_t bpp;
bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format);
pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8;
pf.depth = PIXMAN_FORMAT_DEPTH(format);
pf.abits = PIXMAN_FORMAT_A(format);
pf.rbits = PIXMAN_FORMAT_R(format);
pf.gbits = PIXMAN_FORMAT_G(format);
pf.bbits = PIXMAN_FORMAT_B(format);
switch (PIXMAN_FORMAT_TYPE(format)) {
case PIXMAN_TYPE_ARGB:
pf.ashift = pf.bbits + pf.gbits + pf.rbits;
pf.rshift = pf.bbits + pf.gbits;
pf.gshift = pf.bbits;
pf.bshift = 0;
break;
case PIXMAN_TYPE_ABGR:
pf.ashift = pf.rbits + pf.gbits + pf.bbits;
pf.bshift = pf.rbits + pf.gbits;
pf.gshift = pf.rbits;
pf.rshift = 0;
break;
case PIXMAN_TYPE_BGRA:
pf.bshift = bpp - pf.bbits;
pf.gshift = bpp - (pf.bbits + pf.gbits);
pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits);
pf.ashift = 0;
break;
case PIXMAN_TYPE_RGBA:
pf.rshift = bpp - pf.rbits;
pf.gshift = bpp - (pf.rbits + pf.gbits);
pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits);
pf.ashift = 0;
break;
default:
g_assert_not_reached();
break;
}
pf.amax = (1 << pf.abits) - 1;
pf.rmax = (1 << pf.rbits) - 1;
pf.gmax = (1 << pf.gbits) - 1;
pf.bmax = (1 << pf.bbits) - 1;
pf.amask = pf.amax << pf.ashift;
pf.rmask = pf.rmax << pf.rshift;
pf.gmask = pf.gmax << pf.gshift;
pf.bmask = pf.bmax << pf.bshift;
return pf;
}
cairo_bool_t
_pixman_format_to_masks (pixman_format_code_t format,
cairo_format_masks_t *masks)
{
int a, r, g, b;
masks->bpp = PIXMAN_FORMAT_BPP (format);
/* Number of bits in each channel */
a = PIXMAN_FORMAT_A (format);
r = PIXMAN_FORMAT_R (format);
g = PIXMAN_FORMAT_G (format);
b = PIXMAN_FORMAT_B (format);
switch (PIXMAN_FORMAT_TYPE (format)) {
case PIXMAN_TYPE_ARGB:
masks->alpha_mask = MASK (a) << (r + g + b);
masks->red_mask = MASK (r) << (g + b);
masks->green_mask = MASK (g) << (b);
masks->blue_mask = MASK (b);
return TRUE;
case PIXMAN_TYPE_ABGR:
masks->alpha_mask = MASK (a) << (b + g + r);
masks->blue_mask = MASK (b) << (g + r);
masks->green_mask = MASK (g) << (r);
masks->red_mask = MASK (r);
return TRUE;
#ifdef PIXMAN_TYPE_BGRA
case PIXMAN_TYPE_BGRA:
masks->blue_mask = MASK (b) << (masks->bpp - b);
masks->green_mask = MASK (g) << (masks->bpp - b - g);
masks->red_mask = MASK (r) << (masks->bpp - b - g - r);
masks->alpha_mask = MASK (a);
return TRUE;
#endif
case PIXMAN_TYPE_A:
masks->alpha_mask = MASK (a);
masks->red_mask = 0;
masks->green_mask = 0;
masks->blue_mask = 0;
return TRUE;
case PIXMAN_TYPE_OTHER:
case PIXMAN_TYPE_COLOR:
case PIXMAN_TYPE_GRAY:
case PIXMAN_TYPE_YUY2:
case PIXMAN_TYPE_YV12:
default:
masks->alpha_mask = 0;
masks->red_mask = 0;
masks->green_mask = 0;
masks->blue_mask = 0;
return FALSE;
}
}
int
main (int argc, char *argv[])
{
bench_info_t binfo;
pixman_filter_t filter = PIXMAN_FILTER_NEAREST;
pixman_format_code_t src_format = PIXMAN_a8r8g8b8;
pixman_format_code_t mask_format = 0;
pixman_format_code_t dest_format = PIXMAN_a8r8g8b8;
pixman_box32_t dest_box = { 0, 0, WIDTH, HEIGHT };
box_48_16_t transformed = { 0 };
int32_t xmin, ymin, xmax, ymax;
uint32_t *src, *mask, *dest;
binfo.op = PIXMAN_OP_SRC;
binfo.mask_image = NULL;
pixman_transform_init_identity (&binfo.transform);
++argv;
if (*argv && (*argv)[0] == '-' && (*argv)[1] == 'n')
{
filter = PIXMAN_FILTER_NEAREST;
++argv;
--argc;
}
if (*argv && (*argv)[0] == '-' && (*argv)[1] == 'b')
{
filter = PIXMAN_FILTER_BILINEAR;
++argv;
--argc;
}
if (argc == 1 ||
!parse_arguments (argc, argv, &binfo.transform, &binfo.op,
&src_format, &mask_format, &dest_format))
{
printf ("Usage: affine-bench [-n] [-b] axx [axy] [ayx] [ayy] [combine type]\n");
printf (" [src format] [mask format] [dest format]\n");
printf (" -n : nearest scaling (default)\n");
printf (" -b : bilinear scaling\n");
printf (" axx : x_out:x_in factor\n");
printf (" axy : x_out:y_in factor (default 0)\n");
printf (" ayx : y_out:x_in factor (default 0)\n");
printf (" ayy : y_out:y_in factor (default 1)\n");
printf (" combine type : src, over, in etc (default src)\n");
printf (" src format : a8r8g8b8, r5g6b5 etc (default a8r8g8b8)\n");
printf (" mask format : as for src format, but no mask used if omitted\n");
printf (" dest format : as for src format (default a8r8g8b8)\n");
printf ("The output is a single number in megapixels/second.\n");
return EXIT_FAILURE;
}
/* Compute required extents for source and mask image so they qualify
* for COVER fast paths and get the flags in pixman.c:analyze_extent().
* These computations are for FAST_PATH_SAMPLES_COVER_CLIP_BILINEAR,
* but at the same time they also allow COVER_CLIP_NEAREST.
*/
compute_transformed_extents (&binfo.transform, &dest_box, &transformed);
xmin = pixman_fixed_to_int (transformed.x1 - pixman_fixed_1 / 2);
ymin = pixman_fixed_to_int (transformed.y1 - pixman_fixed_1 / 2);
xmax = pixman_fixed_to_int (transformed.x2 + pixman_fixed_1 / 2);
ymax = pixman_fixed_to_int (transformed.y2 + pixman_fixed_1 / 2);
/* Note:
* The upper limits can be reduced to the following when fetchers
* are guaranteed to not access pixels with zero weight. This concerns
* particularly all bilinear samplers.
*
* xmax = pixman_fixed_to_int (transformed.x2 + pixman_fixed_1 / 2 - pixman_fixed_e);
* ymax = pixman_fixed_to_int (transformed.y2 + pixman_fixed_1 / 2 - pixman_fixed_e);
* This is equivalent to subtracting 0.5 and rounding up, rather than
* subtracting 0.5, rounding down and adding 1.
*/
binfo.src_x = -xmin;
binfo.src_y = -ymin;
/* Always over-allocate width by 64 pixels for all src, mask and dst,
* so that we can iterate over an x-offset 0..63 in bench ().
* This is similar to lowlevel-blt-bench, which uses the same method
* to hit different cacheline misalignments.
*/
create_image (xmax - xmin + 64, ymax - ymin + 1, src_format, filter,
&src, &binfo.src_image);
if (mask_format)
{
create_image (xmax - xmin + 64, ymax - ymin + 1, mask_format, filter,
&mask, &binfo.mask_image);
if ((PIXMAN_FORMAT_R(mask_format) ||
PIXMAN_FORMAT_G(mask_format) ||
PIXMAN_FORMAT_B(mask_format)))
{
pixman_image_set_component_alpha (binfo.mask_image, 1);
}
}
create_image (WIDTH + 64, HEIGHT, dest_format, filter,
&dest, &binfo.dest_image);
run_benchmark (&binfo);
return EXIT_SUCCESS;
}
