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d3dx9: Add color key support to D3DXLoadSurfaceFromMemory.

This commit is contained in:
Matteo Bruni 2010-11-11 22:13:06 +01:00 committed by Alexandre Julliard
parent da8c179d61
commit 0b4969f841
1 changed files with 50 additions and 10 deletions
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60
dlls/d3dx9_36/surface.c
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@ -642,11 +642,14 @@ static void make_argb_color(CONST struct argb_conversion_info *info, CONST DWORD
* Pixels outsize the source rect are blacked out.
* Works only for ARGB formats with 1 - 4 bytes per pixel.
*/
static void copy_simple_data(CONST BYTE *src, UINT srcpitch, POINT srcsize, CONST PixelFormatDesc *srcformat,
BYTE *dest, UINT destpitch, POINT destsize, CONST PixelFormatDesc *destformat)
static void copy_simple_data(CONST BYTE *src, UINT srcpitch, POINT srcsize,
CONST PixelFormatDesc *srcformat,
BYTE *dest, UINT destpitch, POINT destsize,
CONST PixelFormatDesc *destformat,
D3DCOLOR colorkey)
{
struct argb_conversion_info conv_info;
DWORD channels[4];
struct argb_conversion_info conv_info, ck_conv_info;
DWORD channels[4], pixel;
UINT minwidth, minheight;
UINT x, y;
@ -656,6 +659,14 @@ static void copy_simple_data(CONST BYTE *src, UINT srcpitch, POINT srcsize, C
minwidth = (srcsize.x < destsize.x) ? srcsize.x : destsize.x;
minheight = (srcsize.y < destsize.y) ? srcsize.y : destsize.y;
if(colorkey) {
/* color keys are always represented in D3DFMT_A8R8G8B8 format */
const PixelFormatDesc *ckformatdesc;
ckformatdesc = get_format_info(D3DFMT_A8R8G8B8);
init_argb_conversion_info(srcformat, ckformatdesc, &ck_conv_info);
}
for(y = 0;y < minheight;y++) {
const BYTE *srcptr = src + y * srcpitch;
BYTE *destptr = dest + y * destpitch;
@ -666,6 +677,14 @@ static void copy_simple_data(CONST BYTE *src, UINT srcpitch, POINT srcsize, C
/* recombine the components */
if(destformat->type == FORMAT_ARGB) make_argb_color(&conv_info, channels, (DWORD*)destptr);
if(colorkey) {
get_relevant_argb_components(&ck_conv_info, *(const DWORD*)srcptr, channels);
make_argb_color(&ck_conv_info, channels, &pixel);
if(pixel == colorkey)
/* make this pixel transparent */
*(DWORD *)destptr &= ~conv_info.destmask[0];
}
srcptr += srcformat->bytes_per_pixel;
destptr += destformat->bytes_per_pixel;
}
@ -685,17 +704,28 @@ static void copy_simple_data(CONST BYTE *src, UINT srcpitch, POINT srcsize, C
* using a point filter.
* Works only for ARGB formats with 1 - 4 bytes per pixel.
*/
static void point_filter_simple_data(CONST BYTE *src, UINT srcpitch, POINT srcsize, CONST PixelFormatDesc *srcformat,
BYTE *dest, UINT destpitch, POINT destsize, CONST PixelFormatDesc *destformat)
static void point_filter_simple_data(CONST BYTE *src, UINT srcpitch, POINT srcsize,
CONST PixelFormatDesc *srcformat,
BYTE *dest, UINT destpitch, POINT destsize,
CONST PixelFormatDesc *destformat,
D3DCOLOR colorkey)
{
struct argb_conversion_info conv_info;
DWORD channels[4];
struct argb_conversion_info conv_info, ck_conv_info;
DWORD channels[4], pixel;
UINT x, y;
ZeroMemory(channels, sizeof(channels));
init_argb_conversion_info(srcformat, destformat, &conv_info);
if(colorkey) {
/* color keys are always represented in D3DFMT_A8R8G8B8 format */
const PixelFormatDesc *ckformatdesc;
ckformatdesc = get_format_info(D3DFMT_A8R8G8B8);
init_argb_conversion_info(srcformat, ckformatdesc, &ck_conv_info);
}
for(y = 0;y < destsize.y;y++) {
BYTE *destptr = dest + y * destpitch;
const BYTE *bufptr = src + srcpitch * (y * srcsize.y / destsize.y);
@ -709,6 +739,14 @@ static void point_filter_simple_data(CONST BYTE *src, UINT srcpitch, POINT sr
/* recombine the components */
if(destformat->type == FORMAT_ARGB) make_argb_color(&conv_info, channels, (DWORD*)destptr);
if(colorkey) {
get_relevant_argb_components(&ck_conv_info, *(const DWORD*)srcptr, channels);
make_argb_color(&ck_conv_info, channels, &pixel);
if(pixel == colorkey)
/* make this pixel transparent */
*(DWORD *)destptr &= ~conv_info.destmask[0];
}
destptr += destformat->bytes_per_pixel;
}
}
@ -797,11 +835,13 @@ HRESULT WINAPI D3DXLoadSurfaceFromMemory(LPDIRECT3DSURFACE9 pDestSurface,
if((dwFilter & 0xF) == D3DX_FILTER_NONE) {
copy_simple_data(pSrcMemory, SrcPitch, srcsize, srcformatdesc,
lockrect.pBits, lockrect.Pitch, destsize, destformatdesc);
lockrect.pBits, lockrect.Pitch, destsize, destformatdesc,
Colorkey);
} else /*if((dwFilter & 0xF) == D3DX_FILTER_POINT) */ {
/* always apply a point filter until D3DX_FILTER_LINEAR, D3DX_FILTER_TRIANGLE and D3DX_FILTER_BOX are implemented */
point_filter_simple_data(pSrcMemory, SrcPitch, srcsize, srcformatdesc,
lockrect.pBits, lockrect.Pitch, destsize, destformatdesc);
lockrect.pBits, lockrect.Pitch, destsize, destformatdesc,
Colorkey);
}
IDirect3DSurface9_UnlockRect(pDestSurface);