From f9fd2c2b565a336eaafc695de037e3b35b21fbe9 Mon Sep 17 00:00:00 2001
From: Richard Henderson <richard.henderson@linaro.org>
Date: Sat, 4 Feb 2023 08:01:53 -1000
Subject: [PATCH] Provide generic implementation for blt
Fall back to system memmove for each complete row.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
pixman/pixman-general.c | 58 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 58 insertions(+)
diff --git a/pixman/pixman-general.c b/pixman/pixman-general.c
index 7e5a0d09..61bde6c3 100644
--- a/pixman/pixman-general.c
+++ b/pixman/pixman-general.c
@@ -249,6 +249,63 @@ static const pixman_fast_path_t general_fast_path[] =
{ PIXMAN_OP_NONE }
};
+static pixman_bool_t
+general_blt (pixman_implementation_t *imp,
+ uint32_t * src_bits,
+ uint32_t * dst_bits,
+ int src_stride,
+ int dst_stride,
+ int src_bpp,
+ int dst_bpp,
+ int src_x,
+ int src_y,
+ int dest_x,
+ int dest_y,
+ int width,
+ int height)
+{
+ void *src_bytes;
+ void *dst_bytes;
+ int byte_width;
+
+ if (src_bpp != dst_bpp)
+ 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 = (uint16_t *)src_bits + src_stride * src_y + src_x;
+ dst_bytes = (uint16_t *)dst_bits + dst_stride * dest_y + dest_x;
+ byte_width = 2 * width;
+ src_stride *= 2;
+ dst_stride *= 2;
+ }
+ else if (src_bpp == 32)
+ {
+ src_stride = src_stride * (int) sizeof (uint32_t) / 4;
+ dst_stride = dst_stride * (int) sizeof (uint32_t) / 4;
+ src_bytes = (uint32_t *)src_bits + src_stride * src_y + src_x;
+ dst_bytes = (uint32_t *)dst_bits + dst_stride * dest_y + dest_x;
+ byte_width = 4 * width;
+ src_stride *= 4;
+ dst_stride *= 4;
+ }
+ else
+ {
+ return FALSE;
+ }
+
+ while (height--)
+ {
+ memmove (dst_bytes, src_bytes, byte_width);
+ src_bytes = (uint8_t *)src_bytes + src_stride;
+ dst_bytes = (uint8_t *)dst_bytes + dst_stride;
+ }
+
+ return TRUE;
+}
+
pixman_implementation_t *
_pixman_implementation_create_general (void)
{
@@ -258,6 +315,7 @@ _pixman_implementation_create_general (void)
_pixman_setup_combiner_functions_float (imp);
imp->iter_info = general_iters;
+ imp->blt = general_blt;
return imp;
}
--
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