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-rw-r--r--recipes/xorg-lib/pixman-0.18.0/565-scanline.patch257
1 files changed, 257 insertions, 0 deletions
diff --git a/recipes/xorg-lib/pixman-0.18.0/565-scanline.patch b/recipes/xorg-lib/pixman-0.18.0/565-scanline.patch
new file mode 100644
index 0000000000..8461a46a12
--- /dev/null
+++ b/recipes/xorg-lib/pixman-0.18.0/565-scanline.patch
@@ -0,0 +1,257 @@
+From deef1daf5896062f47fa61b94e1e77c7c0041820 Mon Sep 17 00:00:00 2001
+From: Siarhei Siamashka <siarhei.siamashka@nokia.com>
+Date: Fri, 04 Dec 2009 16:49:19 +0000
+Subject: A copy-paste version of 16bpp bilinear scanline fetcher
+
+---
+diff --git a/pixman/pixman-bits-image.c b/pixman/pixman-bits-image.c
+index 3d78ff0..1656975 100644
+--- a/pixman/pixman-bits-image.c
++++ b/pixman/pixman-bits-image.c
+@@ -535,6 +535,212 @@ bits_image_fetch_bilinear_no_repeat_8888 (pixman_image_t * ima,
+ *buffer++ = 0;
+ }
+
++static void
++bits_image_fetch_bilinear_no_repeat_0565 (pixman_image_t * ima,
++ int offset,
++ int line,
++ int width,
++ uint32_t * buffer,
++ const uint32_t * mask,
++ uint32_t mask_bits)
++{
++ bits_image_t *bits = &ima->bits;
++ pixman_fixed_t x_top, x_bottom, x;
++ pixman_fixed_t ux_top, ux_bottom, ux;
++ pixman_vector_t v;
++ uint32_t top_mask, bottom_mask;
++ uint16_t *top_row;
++ uint16_t *bottom_row;
++ uint32_t *end;
++ uint16_t zero[2] = { 0, 0 };
++ int y, y1, y2;
++ int disty;
++ int mask_inc;
++ int w;
++
++ /* reference point is the center of the pixel */
++ v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
++ v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
++ v.vector[2] = pixman_fixed_1;
++
++ if (!pixman_transform_point_3d (bits->common.transform, &v))
++ return;
++
++ ux = ux_top = ux_bottom = bits->common.transform->matrix[0][0];
++ x = x_top = x_bottom = v.vector[0] - pixman_fixed_1/2;
++
++ y = v.vector[1] - pixman_fixed_1/2;
++ disty = (y >> 8) & 0xff;
++
++ /* Load the pointers to the first and second lines from the source
++ * image that bilinear code must read.
++ *
++ * The main trick in this code is about the check if any line are
++ * outside of the image;
++ *
++ * When I realize that a line (any one) is outside, I change
++ * the pointer to a dummy area with zeros. Once I change this, I
++ * must be sure the pointer will not change, so I set the
++ * variables to each pointer increments inside the loop.
++ */
++ y1 = pixman_fixed_to_int (y);
++ y2 = y1 + 1;
++
++ if (y1 < 0 || y1 >= bits->height)
++ {
++ top_row = zero;
++ x_top = 0;
++ ux_top = 0;
++ }
++ else
++ {
++ top_row = bits->bits + y1 * bits->rowstride;
++ x_top = x;
++ ux_top = ux;
++ }
++
++ if (y2 < 0 || y2 >= bits->height)
++ {
++ bottom_row = zero;
++ x_bottom = 0;
++ ux_bottom = 0;
++ }
++ else
++ {
++ bottom_row = bits->bits + y2 * bits->rowstride;
++ x_bottom = x;
++ ux_bottom = ux;
++ }
++
++ /* Instead of checking whether the operation uses the mast in
++ * each loop iteration, verify this only once and prepare the
++ * variables to make the code smaller inside the loop.
++ */
++ if (!mask)
++ {
++ mask_inc = 0;
++ mask_bits = 1;
++ mask = &mask_bits;
++ }
++ else
++ {
++ /* If have a mask, prepare the variables to check it */
++ mask_inc = 1;
++ }
++
++ /* If both are zero, then the whole thing is zero */
++ if (top_row == zero && bottom_row == zero)
++ {
++ memset (buffer, 0, width * sizeof (uint32_t));
++ return;
++ }
++ else
++ {
++ if (top_row == zero)
++ {
++ top_mask = 0;
++ bottom_mask = 0xff000000;
++ }
++ else if (bottom_row == zero)
++ {
++ top_mask = 0xff000000;
++ bottom_mask = 0;
++ }
++ else
++ {
++ top_mask = 0xff000000;
++ bottom_mask = 0xff000000;
++ }
++ }
++
++ end = buffer + width;
++
++ /* Zero fill to the left of the image */
++ while (buffer < end && x < pixman_fixed_minus_1)
++ {
++ *buffer++ = 0;
++ x += ux;
++ x_top += ux_top;
++ x_bottom += ux_bottom;
++ mask += mask_inc;
++ }
++
++ /* Left edge
++ */
++ while (buffer < end && x < 0)
++ {
++ uint32_t tr, br;
++ int32_t distx;
++
++ tr = CONVERT_0565_TO_0888 (top_row[pixman_fixed_to_int (x_top) + 1]) | top_mask;
++ br = CONVERT_0565_TO_0888 (bottom_row[pixman_fixed_to_int (x_bottom) + 1]) | bottom_mask;
++
++ distx = (x >> 8) & 0xff;
++
++ *buffer++ = bilinear_interpolation (0, tr, 0, br, distx, disty);
++
++ x += ux;
++ x_top += ux_top;
++ x_bottom += ux_bottom;
++ mask += mask_inc;
++ }
++
++ /* Main part */
++ w = pixman_int_to_fixed (bits->width - 1);
++
++ while (buffer < end && x < w)
++ {
++ if (*mask)
++ {
++ uint32_t tl, tr, bl, br;
++ int32_t distx;
++
++ tl = CONVERT_0565_TO_0888 (top_row [pixman_fixed_to_int (x_top)]) | top_mask;
++ tr = CONVERT_0565_TO_0888 (top_row [pixman_fixed_to_int (x_top) + 1]) | top_mask;
++ bl = CONVERT_0565_TO_0888 (bottom_row [pixman_fixed_to_int (x_bottom)]) | bottom_mask;
++ br = CONVERT_0565_TO_0888 (bottom_row [pixman_fixed_to_int (x_bottom) + 1]) | bottom_mask;
++
++ distx = (x >> 8) & 0xff;
++
++ *buffer = bilinear_interpolation (tl, tr, bl, br, distx, disty);
++ }
++
++ buffer++;
++ x += ux;
++ x_top += ux_top;
++ x_bottom += ux_bottom;
++ mask += mask_inc;
++ }
++
++ /* Right Edge */
++ w = pixman_int_to_fixed (bits->width);
++ while (buffer < end && x < w)
++ {
++ if (*mask)
++ {
++ uint32_t tl, bl;
++ int32_t distx;
++
++ tl = CONVERT_0565_TO_0888 (top_row [pixman_fixed_to_int (x_top)]) | top_mask;
++ bl = CONVERT_0565_TO_0888 (bottom_row [pixman_fixed_to_int (x_bottom)]) | bottom_mask;
++
++ distx = (x >> 8) & 0xff;
++
++ *buffer = bilinear_interpolation (tl, 0, bl, 0, distx, disty);
++ }
++
++ buffer++;
++ x += ux;
++ x_top += ux_top;
++ x_bottom += ux_bottom;
++ mask += mask_inc;
++ }
++
++ /* Zero fill to the left of the image */
++ while (buffer < end)
++ *buffer++ = 0;
++}
++
+ static force_inline uint32_t
+ bits_image_fetch_pixel_convolution (bits_image_t *image,
+ pixman_fixed_t x,
+@@ -917,14 +1123,26 @@ bits_image_property_changed (pixman_image_t *image)
+ (bits->common.filter == PIXMAN_FILTER_BILINEAR ||
+ bits->common.filter == PIXMAN_FILTER_GOOD ||
+ bits->common.filter == PIXMAN_FILTER_BEST) &&
+- bits->common.repeat == PIXMAN_REPEAT_NONE &&
+- (bits->format == PIXMAN_a8r8g8b8 ||
+- bits->format == PIXMAN_x8r8g8b8))
++ bits->common.repeat == PIXMAN_REPEAT_NONE)
+ {
+ image->common.get_scanline_64 =
+ _pixman_image_get_scanline_generic_64;
+- image->common.get_scanline_32 =
+- bits_image_fetch_bilinear_no_repeat_8888;
++
++ if (bits->format == PIXMAN_a8r8g8b8 || bits->format == PIXMAN_x8r8g8b8)
++ {
++ image->common.get_scanline_32 =
++ bits_image_fetch_bilinear_no_repeat_8888;
++ }
++ else if (bits->format == PIXMAN_r5g6b5)
++ {
++ image->common.get_scanline_32 =
++ bits_image_fetch_bilinear_no_repeat_0565;
++ }
++ else
++ {
++ image->common.get_scanline_32 =
++ bits_image_fetch_transformed;
++ }
+ }
+ else
+ {
+--
+cgit v0.8.3-6-g21f6
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