drewcassidy/nvidia-texture-tools
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Add support for luminance flag. Fixes issue 126.

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This commit is contained in:
castano 2010-06-01 19:04:58 +00:00
parent acc7dee80f
commit 0b2e6d633d
2 changed files with 24 additions and 6 deletions
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19
src/nvimage/DirectDrawSurface.cpp
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@ -662,8 +662,14 @@ void DDSHeader::setPixelFormat(uint bitcount, uint rmask, uint gmask, uint bmask
nvCheck((gmask & amask) == 0);
nvCheck((bmask & amask) == 0);
this->pf.flags = DDPF_RGB;
if (rmask > 0 && gmask == 0 && bmask == 0)
{
this->pf.flags = DDPF_LUMINANCE;
}
else
{
this->pf.flags = DDPF_RGB;
}
if (amask != 0) {
this->pf.flags |= DDPF_ALPHAPIXELS;
}
@ -816,9 +822,9 @@ bool DirectDrawSurface::isSupported() const
return false;
}
}
else if (header.pf.flags & DDPF_RGB)
else if ((header.pf.flags & DDPF_RGB) || (header.pf.flags & DDPF_LUMINANCE))
{
// All RGB formats are supported now.
// All RGB and luminance formats are supported now.
}
else
{
@ -937,7 +943,7 @@ void DirectDrawSurface::mipmap(Image * img, uint face, uint mipmap)
img->allocate(w, h);
if (header.pf.flags & DDPF_RGB)
if ((header.pf.flags & DDPF_RGB) || (header.pf.flags & DDPF_LUMINANCE))
{
readLinearImage(img);
}
@ -1172,7 +1178,7 @@ uint DirectDrawSurface::mipmapSize(uint mipmap) const
}
else
{
nvDebugCheck(header.pf.flags & DDPF_RGB);
nvDebugCheck((header.pf.flags & DDPF_RGB) || (header.pf.flags & DDPF_LUMINANCE));
// Align pixels to bytes.
uint byteCount = (header.pf.bitcount + 7) / 8;
@ -1242,6 +1248,7 @@ void DirectDrawSurface::printInfo() const
printf("Pixel Format:\n");
printf("\tFlags: 0x%.8X\n", header.pf.flags);
if (header.pf.flags & DDPF_RGB) printf("\t\tDDPF_RGB\n");
if (header.pf.flags & DDPF_LUMINANCE) printf("\t\DDPF_LUMINANCE\n");
if (header.pf.flags & DDPF_FOURCC) printf("\t\tDDPF_FOURCC\n");
if (header.pf.flags & DDPF_ALPHAPIXELS) printf("\t\tDDPF_ALPHAPIXELS\n");
if (header.pf.flags & DDPF_ALPHA) printf("\t\tDDPF_ALPHA\n");

11
src/nvtt/tools/compress.cpp
View File

@ -143,6 +143,7 @@ int main(int argc, char *argv[])
bool nocuda = false;
bool silent = false;
bool bc1n = false;
bool luminance = false;
nvtt::Format format = nvtt::Format_BC1;
const char * externalCompressor = NULL;
@ -195,6 +196,11 @@ int main(int argc, char *argv[])
{
format = nvtt::Format_RGB;
}
else if (strcmp("-lumi", argv[i]) == 0)
{
luminance = true;
format = nvtt::Format_RGB;
}
else if (strcmp("-bc1", argv[i]) == 0)
{
format = nvtt::Format_BC1;
@ -286,6 +292,7 @@ int main(int argc, char *argv[])
printf(" -fast \tFast compression.\n");
printf(" -nocuda \tDo not use cuda compressor.\n");
printf(" -rgb \tRGBA format\n");
printf(" -lumi \tLUMINANCE format\n");
printf(" -bc1 \tBC1 format (DXT1)\n");
printf(" -bc1n \tBC1 normal map format (DXT1nm)\n");
printf(" -bc1a \tBC1 format with binary alpha (DXT1a)\n");
@ -398,6 +405,10 @@ int main(int argc, char *argv[])
nvtt::CompressionOptions compressionOptions;
compressionOptions.setFormat(format);
if (luminance)
{
compressionOptions.setPixelFormat(8, 0xff, 0, 0, 0);
}
if (fast)
{
compressionOptions.setQuality(nvtt::Quality_Fastest);