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add (commented out) clipper support to dds_blt

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FunkyFr3sh 2022-09-27 15:28:57 +02:00
parent 2ddc0b5ceb
commit 11801618df
2 changed files with 43 additions and 2 deletions
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2
inc/ddsurface.h
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@ -7,6 +7,8 @@
#include "IDirectDrawSurface.h"
#include "IDirectDraw.h"
#define DDBLT_NO_CLIP (1 << 31)
/* enables redraw via blt/unlock if there wasn't any flip for X ms */
#define FLIP_REDRAW_TIMEOUT 1000 / 10

43
src/ddsurface.c
View File

@ -20,8 +20,8 @@ HRESULT dds_AddAttachedSurface(IDirectDrawSurfaceImpl* This, IDirectDrawSurfaceI
if (!This->backbuffer)
{
lpDDSurface->caps |= DDSCAPS_BACKBUFFER;
This->backbuffer = lpDDSurface;
lpDDSurface->caps |= DDSCAPS_BACKBUFFER;
This->backbuffer = lpDDSurface;
}
}
@ -140,6 +140,45 @@ HRESULT dds_Blt(
BOOL mirror_left_right = got_fx && (lpDDBltFx->dwDDFX & DDBLTFX_MIRRORLEFTRIGHT);
BOOL mirror_up_down = got_fx && (lpDDBltFx->dwDDFX & DDBLTFX_MIRRORUPDOWN);
/* keep this commented out until tested and confirmed working
if (This->clipper && !(dwFlags & DDBLT_NO_CLIP))
{
DWORD size = 0;
if (SUCCEEDED(IDirectDrawClipper_GetClipList(This->clipper, &dst_rect, NULL, &size)) && size > 0)
{
RGNDATA* list = (RGNDATA*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
if (list)
{
if (SUCCEEDED(IDirectDrawClipper_GetClipList(This->clipper, &dst_rect, list, &size)))
{
float scale_w = (float)src_w / dst_w;
float scale_h = (float)src_h / dst_h;
RECT* dst_c_rect = (RECT*)list->Buffer;
for (int i = 0; i < list->rdh.nCount; ++i)
{
RECT src_c_rect = src_rect;
src_c_rect.left += (LONG)((dst_c_rect[i].left - dst_rect.left) * scale_w);
src_c_rect.top += (LONG)((dst_c_rect[i].top - dst_rect.top) * scale_h);
src_c_rect.right -= (LONG)((dst_rect.right - dst_c_rect[i].right) * scale_w);
src_c_rect.bottom -= (LONG)((dst_rect.bottom - dst_c_rect[i].bottom) * scale_h);
dds_Blt(This, &dst_c_rect[i], src_surface, &src_c_rect, dwFlags | DDBLT_NO_CLIP, lpDDBltFx);
}
}
HeapFree(GetProcessHeap(), 0, list);
return DD_OK;
}
}
}
*/
if (This->bpp != src_surface->bpp)
{
TRACE_EXT(" NOT_IMPLEMENTED This->bpp=%u, src_surface->bpp=%u\n", This->bpp, src_surface->bpp);