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swrastg_dri: hack for loader hardcoded stride

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This commit is contained in:
George Sapountzis 2010-03-25 17:01:54 +02:00
parent 007e0e3ef9
commit bb289a8a70
1 changed files with 25 additions and 3 deletions
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28
src/gallium/winsys/sw/dri/dri_sw_winsys.c
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@ -62,6 +62,14 @@ xm_is_displaytarget_format_supported( struct sw_winsys *ws,
return TRUE;
}
static INLINE int
bytes_per_line(unsigned stride, unsigned mul)
{
unsigned mask = mul - 1;
return ((stride * 8 + mask) & ~mask) / 8;
}
/* pipe_screen::texture_create DISPLAY_TARGET / SCANOUT / SHARED */
static struct sw_displaytarget *
xm_displaytarget_create(struct sw_winsys *winsys,
@ -72,21 +80,35 @@ xm_displaytarget_create(struct sw_winsys *winsys,
unsigned *stride)
{
struct xm_displaytarget *xm_dt;
unsigned nblocksy, size, xm_stride;
unsigned nblocksy, size, xm_stride, loader_stride, format_stride;
xm_dt = CALLOC_STRUCT(xm_displaytarget);
if(!xm_dt)
goto no_xm_dt;
format_stride = util_format_get_stride(format, width);
xm_stride = align(format_stride, alignment);
loader_stride = bytes_per_line(format_stride, 32);
nblocksy = util_format_get_nblocksy(format, height);
xm_stride = align(util_format_get_stride(format, width), alignment);
size = xm_stride * nblocksy;
#ifdef DEBUG
debug_printf("swrast format stride: %8d\n", format_stride);
debug_printf("swrast pipe stride : %8d\n", xm_stride);
debug_printf("swrast loader stride: %8d\n", loader_stride);
#endif
/*
* Allocate with the aligned stride required by the pipe but set the stride
* to the one hardcoded in the loaders XXX
*/
xm_dt->data = align_malloc(size, alignment);
if(!xm_dt->data)
goto no_data;
*stride = xm_stride;
*stride = loader_stride;
return (struct sw_displaytarget *)xm_dt;
no_data: