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Scanline alignment for GFX cache.

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This commit is contained in:
Armin Novak 2016-10-31 07:56:10 +01:00
parent f62d00445e
commit 95a3144b34
1 changed files with 15 additions and 11 deletions
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24
libfreerdp/gdi/gfx.c
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@ -29,6 +29,18 @@
#define TAG FREERDP_TAG("gdi")
static DWORD gfx_align_scanline(DWORD widthInBytes, DWORD alignment)
{
const UINT32 align = 16;
const UINT32 pad = align - (widthInBytes % alignment);
UINT32 scanline = widthInBytes;
if (align != pad)
scanline += pad;
return scanline;
}
/**
* Function description
*
@ -698,16 +710,8 @@ static UINT gdi_CreateSurface(RdpgfxClientContext* context,
return ERROR_INTERNAL_ERROR;
}
surface->scanline = surface->width * 4;
{
const UINT32 align = 16;
const UINT32 pad = align - (surface->scanline % align);
if (align != pad)
surface->scanline += pad;
surface->scanline = gfx_align_scanline(surface->width * 4, 16);
surface->data = (BYTE*) calloc(1, surface->scanline * surface->height);
}
if (!surface->data)
{
@ -895,7 +899,7 @@ static UINT gdi_SurfaceToCache(RdpgfxClientContext* context,
cacheEntry->width = (UINT32)(rect->right - rect->left);
cacheEntry->height = (UINT32)(rect->bottom - rect->top);
cacheEntry->format = surface->format;
cacheEntry->scanline = (cacheEntry->width + (cacheEntry->width % 4)) * 4;
cacheEntry->scanline = gfx_align_scanline(cacheEntry->width * 4, 16);
cacheEntry->data = (BYTE*) calloc(1, cacheEntry->scanline * cacheEntry->height);
if (!cacheEntry->data)