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tuned VIA overlay buffer pitch/width granularity constraints: VIA handles downto 8 pixels (checked on CLE266)

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14275 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen
2005-09-29 09:28:11 +00:00
parent c21b10bf4c
commit 980cfe5327
1 changed files with 6 additions and 6 deletions
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src/add-ons/accelerants/via/Overlay.c
+6 -6
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@@ -1,4 +1,4 @@
/* Written by Rudolf Cornelissen 05/2002-9/2004 */
/* Written by Rudolf Cornelissen 05/2002-9/2005 */
/* Note on 'missing features' in BeOS 5.0.3 and DANO:
* BeOS needs to define more colorspaces! It would be nice if BeOS would support the FourCC 'definitions'
@@ -95,12 +95,12 @@ const overlay_buffer *ALLOCATE_OVERLAY_BUFFER(color_space cs, uint16 width, uint
switch (cs)
{
case B_YCbCr422:
/* check if slopspace is needed: RIVA128 and TNT need ~0x000f. */
si->overlay.myBuffer[offset].width = ((width + 0x000f) & ~0x000f);
/* check if slopspace is needed: VIA CLE266 needs ~0x0007. */
si->overlay.myBuffer[offset].width = ((width + 0x0007) & ~0x0007);
si->overlay.myBuffer[offset].bytes_per_row = 2 * si->overlay.myBuffer[offset].width;
/* check if the requested horizontal pitch is supported: */
//fixme: tune for GF and TNT...
//fixme: tune for VIA... (overruled below, this should probably be a bytes_per_row check)
if (si->overlay.myBuffer[offset].width > 4088)
{
LOG(4,("Overlay: Sorry, requested buffer pitch not supported, aborted\n"));
@@ -377,11 +377,11 @@ status_t GET_OVERLAY_CONSTRAINTS
{
case B_YCbCr422:
/* Note: this has to be in sync with the slopspace setup during buffer allocation.. */
oc->view.width_alignment = 15;
oc->view.width_alignment = 7;
break;
default:
/* we should not be here, but set the worst-case value just to be safe anyway */
oc->view.width_alignment = 15;
oc->view.width_alignment = 7;
break;
}