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more fixes for 16-bit-per-channel textures

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This commit is contained in:
David Rose 2004-12-17 21:00:17 +00:00
parent cbb0cd085e
commit 03dfb6dea0
3 changed files with 29 additions and 18 deletions
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39
panda/src/dxgsg7/dxTextureContext7.cxx
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@ -679,8 +679,6 @@ HRESULT ConvertDDSurftoPixBuf(PixelBuffer *pixbuf,LPDIRECTDRAWSURFACE7 pDDSurf)
DWORD dwNumComponents=pixbuf->get_num_components();
assert(pixbuf->get_component_width()==sizeof(BYTE)); // cant handle anything else now
assert(pixbuf->get_image_type()==PixelBuffer::T_unsigned_byte); // cant handle anything else now
assert((dwNumComponents==3) || (dwNumComponents==4)); // cant handle anything else now
BYTE *pbuf=pixbuf->_image.p();
@ -1041,14 +1039,6 @@ LPDIRECTDRAWSURFACE7 DXTextureContext7::CreateTexture(LPDIRECT3DDEVICE7 pd3dDevi
PixelBuffer::Type pixbuf_type = pbuf->get_image_type();
DWORD cNumColorChannels = pbuf->get_num_components();
assert(pbuf->get_component_width()==sizeof(BYTE)); // cant handle anything else now
assert(pixbuf_type==PixelBuffer::T_unsigned_byte); // cant handle anything else now
if((pixbuf_type != PixelBuffer::T_unsigned_byte) || (pbuf->get_component_width()!=1)) {
dxgsg7_cat.error() << "CreateTexture failed, havent handled non 8-bit channel pixelbuffer types yet! \n";
return NULL;
}
DWORD dwOrigWidth = (DWORD)pbuf->get_xsize();
DWORD dwOrigHeight = (DWORD)pbuf->get_ysize();
@ -1652,6 +1642,22 @@ LPDIRECTDRAWSURFACE7 DXTextureContext7::CreateTexture(LPDIRECT3DDEVICE7 pd3dDevi
return NULL;
}
// Converts from multiple bytes per component to a single byte per
// component, for the convenience of the routines in this module which
// assume just one byte per component. This loses precision on
// high-precision textures, too bad.
PTA_uchar
downsample_image(uchar *source, int num_pixels, int component_width) {
PTA_uchar result = PTA_uchar::empty_array(num_pixels);
uchar *p = source + component_width - 1;
for (int ti = 0; ti < num_pixels; ti++) {
result[ti] = *p;
p += component_width;
}
return result;
}
HRESULT DXTextureContext7::
FillDDSurfTexturePixels(void) {
@ -1662,7 +1668,14 @@ FillDDSurfTexturePixels(void) {
return E_FAIL;
}
HRESULT hr = ConvertPixBuftoDDSurf((ConversionType)_PixBufConversionType,pbuf->_image.p(),_surface);
PTA_uchar image = pbuf->_image;
if (pbuf->get_component_width() != 1) {
image = downsample_image(image,
pbuf->get_xsize() * pbuf->get_ysize() * pbuf->get_num_components(),
pbuf->get_component_width());
}
HRESULT hr = ConvertPixBuftoDDSurf((ConversionType)_PixBufConversionType,image.p(),_surface);
if(FAILED(hr)) {
return hr;
}
@ -1679,8 +1692,6 @@ FillDDSurfTexturePixels(void) {
curxsize=ddsd.dwWidth; curysize=ddsd.dwHeight;
assert(pbuf->get_image_type()==PixelBuffer::T_unsigned_byte); // cant handle anything else now
// all mipmap sublevels require 1/3 of total original space. alloc 1/2 for safety
BYTE *pMipMapPixBufSpace = new BYTE[((curxsize*curysize*cNumColorChannels)/2)+1024];
@ -1688,7 +1699,7 @@ FillDDSurfTexturePixels(void) {
pCurDDSurf->AddRef(); // so final release doesnt release the surface
BYTE *pDstWord = pMipMapPixBufSpace;
BYTE *pLastMipLevelStart = (BYTE *) pbuf->_image.p();
BYTE *pLastMipLevelStart = (BYTE *) image.p();
// clock_t start1,finish1;
// start1=clock();
for(i=1;i<ddsd.dwMipMapCount;i++) {

4
panda/src/dxgsg8/dxTextureContext8.cxx
View File

@ -987,7 +987,7 @@ FillDDSurfTexturePixels(void) {
bUsingTempPixBuf=true;
USHORT *pOutPix=pTempPixBuf;
BYTE *pSrcPix=pPixels;
BYTE *pSrcPix=pPixels + component_width - 1;
for (UINT y = 0; y < OrigHeight; y++) {
for (UINT x = 0;
x < OrigWidth;
@ -1018,7 +1018,7 @@ FillDDSurfTexturePixels(void) {
}
bUsingTempPixBuf=true;
BYTE *pSrcPix = pPixels;
BYTE *pSrcPix = pPixels + component_width - 1;
for (int i = 0; i < num_pixels; i++) {
pTempPixBuf[i] = *pSrcPix;
pSrcPix += component_width;

4
panda/src/dxgsg9/dxTextureContext9.cxx
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@ -987,7 +987,7 @@ FillDDSurfTexturePixels(void) {
bUsingTempPixBuf=true;
USHORT *pOutPix=pTempPixBuf;
BYTE *pSrcPix=pPixels;
BYTE *pSrcPix=pPixels + component_width - 1;
for (UINT y = 0; y < OrigHeight; y++) {
for (UINT x = 0;
x < OrigWidth;
@ -1018,7 +1018,7 @@ FillDDSurfTexturePixels(void) {
}
bUsingTempPixBuf=true;
BYTE *pSrcPix = pPixels;
BYTE *pSrcPix = pPixels + component_width - 1;
for (int i = 0; i < num_pixels; i++) {
pTempPixBuf[i] = *pSrcPix;
pSrcPix += component_width;