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From 270319565a07f7ceeb12fac1c267d0dd9ebf2d57 Mon Sep 17 00:00:00 2001
From: Meng Mingming <mingming.meng@nxp.com>
Date: Wed, 16 Nov 2016 15:05:51 +0800
Subject: [PATCH 17/17] MGS-2397 [#ccc] Enable double buffer with
fb_pan_display for weston compositor
Refine offset calculation.
Upstream-Status: Inappropriate [i.MX specific]
Date: Nov 16, 2016
Signed-off-by: Meng Mingming <mingming.meng@nxp.com>
---
src/g2d-renderer.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/g2d-renderer.c b/src/g2d-renderer.c
index 41c4d9e..c30aa62 100644
--- a/src/g2d-renderer.c
+++ b/src/g2d-renderer.c
@@ -78,6 +78,7 @@ struct fb_screeninfo {
size_t buffer_length; /* length of frame buffer memory in bytes */
size_t physical;
size_t stride;
+ size_t stride_bytes;
enum g2d_format pixel_format; /* frame buffer pixel format */
int fb_fd;
};
@@ -1136,6 +1137,7 @@ fb_query_screen_info(struct g2d_output_state *output, int fd,
info->physical = fixinfo->smem_start;
info->buffer_length = fixinfo->smem_len;
info->stride = fixinfo->line_length / (varinfo->bits_per_pixel >> 3);
+ info->stride_bytes = fixinfo->line_length;
calculate_g2d_format(varinfo, &info->pixel_format);
if (info->pixel_format < 0) {
@@ -1205,7 +1207,7 @@ g2d_renderer_surface_create(struct g2d_output_state *go, struct g2d_renderer *gr
return -1;
}
go->renderSurf = zalloc(sizeof(struct g2d_surfaceEx) * go->nNumBuffers);
- offset = go->fb_info.buffer_length/go->nNumBuffers;
+ offset = go->fb_info.stride_bytes * go->fb_info.y_resolution;
for(i = 0; i < go->nNumBuffers; i++)
{
get_G2dSurface_from_screeninfo(&go->fb_info, &go->renderSurf[i]);
--
2.7.4
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