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Diffstat (limited to 'recipes/xorg-lib/pixman-0.21.6/0039-Support-of-overlapping-src-dst-for-pixman_blt_sse2.patch')
-rw-r--r--recipes/xorg-lib/pixman-0.21.6/0039-Support-of-overlapping-src-dst-for-pixman_blt_sse2.patch91
1 files changed, 91 insertions, 0 deletions
diff --git a/recipes/xorg-lib/pixman-0.21.6/0039-Support-of-overlapping-src-dst-for-pixman_blt_sse2.patch b/recipes/xorg-lib/pixman-0.21.6/0039-Support-of-overlapping-src-dst-for-pixman_blt_sse2.patch
new file mode 100644
index 0000000..8e89ffe
--- /dev/null
+++ b/recipes/xorg-lib/pixman-0.21.6/0039-Support-of-overlapping-src-dst-for-pixman_blt_sse2.patch
@@ -0,0 +1,91 @@
+From b4064e256d293d32035494a6afff1bc9456b84e1 Mon Sep 17 00:00:00 2001
+From: Siarhei Siamashka <siarhei.siamashka@nokia.com>
+Date: Thu, 22 Oct 2009 05:45:54 +0300
+Subject: [PATCH 39/40] Support of overlapping src/dst for pixman_blt_sse2
+
+---
+ pixman/pixman-sse2.c | 55 +++++++++++++++++++++++++++++--------------------
+ 1 files changed, 32 insertions(+), 23 deletions(-)
+
+diff --git a/pixman/pixman-sse2.c b/pixman/pixman-sse2.c
+index 533b858..9fa7191 100644
+--- a/pixman/pixman-sse2.c
++++ b/pixman/pixman-sse2.c
+@@ -4691,34 +4691,43 @@ pixman_blt_sse2 (uint32_t *src_bits,
+ {
+ uint8_t * src_bytes;
+ uint8_t * dst_bytes;
+- int byte_width;
++ int bpp;
+
+- if (src_bpp != dst_bpp)
++ if (src_bpp != dst_bpp || src_bpp & 7)
+ return FALSE;
+
+- if (src_bpp == 16)
+- {
+- src_stride = src_stride * (int) sizeof (uint32_t) / 2;
+- dst_stride = dst_stride * (int) sizeof (uint32_t) / 2;
+- src_bytes =(uint8_t *)(((uint16_t *)src_bits) + src_stride * (src_y) + (src_x));
+- dst_bytes = (uint8_t *)(((uint16_t *)dst_bits) + dst_stride * (dst_y) + (dst_x));
+- byte_width = 2 * width;
+- src_stride *= 2;
+- dst_stride *= 2;
+- }
+- else if (src_bpp == 32)
++ bpp = src_bpp >> 3;
++ width *= bpp;
++ src_stride *= 4;
++ dst_stride *= 4;
++ src_bytes = (uint8_t *)src_bits + src_y * src_stride + src_x * bpp;
++ dst_bytes = (uint8_t *)dst_bits + dst_y * dst_stride + dst_x * bpp;
++
++ if (src_bpp != 16 && src_bpp != 32)
+ {
+- src_stride = src_stride * (int) sizeof (uint32_t) / 4;
+- dst_stride = dst_stride * (int) sizeof (uint32_t) / 4;
+- src_bytes = (uint8_t *)(((uint32_t *)src_bits) + src_stride * (src_y) + (src_x));
+- dst_bytes = (uint8_t *)(((uint32_t *)dst_bits) + dst_stride * (dst_y) + (dst_x));
+- byte_width = 4 * width;
+- src_stride *= 4;
+- dst_stride *= 4;
++ pixman_blt_helper (src_bytes, dst_bytes, src_stride, dst_stride,
++ width, height);
++ return TRUE;
+ }
+- else
++
++ if (src_bytes < dst_bytes && src_bytes + src_stride * height > dst_bytes)
+ {
+- return FALSE;
++ src_bytes += src_stride * height - src_stride;
++ dst_bytes += dst_stride * height - dst_stride;
++ dst_stride = -dst_stride;
++ src_stride = -src_stride;
++
++ if (src_bytes + width > dst_bytes)
++ {
++ /* TODO: reverse scanline copy using SSE2 */
++ while (--height >= 0)
++ {
++ memmove (dst_bytes, src_bytes, width);
++ dst_bytes += dst_stride;
++ src_bytes += src_stride;
++ }
++ return TRUE;
++ }
+ }
+
+ while (height--)
+@@ -4728,7 +4737,7 @@ pixman_blt_sse2 (uint32_t *src_bits,
+ uint8_t *d = dst_bytes;
+ src_bytes += src_stride;
+ dst_bytes += dst_stride;
+- w = byte_width;
++ w = width;
+
+ while (w >= 2 && ((unsigned long)d & 3))
+ {
+--
+1.6.6.1
+