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texturec: Added basic normalmap mipmap filter.

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This commit is contained in:
Branimir Karadžić 2016-01-06 18:15:05 -08:00
parent 59f8e06094
commit 6c25d56551
2 changed files with 74 additions and 53 deletions
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82
src/image.cpp
View file

@ -469,28 +469,29 @@ namespace bgfx
return;
}
float* dst = (float*)_dst;
const float* src = (const float*)_src;
const uint8_t* src = (const uint8_t*)_src;
uint8_t* dst = (uint8_t*)_dst;
for (uint32_t yy = 0, ystep = _pitch*2; yy < dstheight; ++yy, src += ystep)
{
const float* rgba = src;
for (uint32_t xx = 0; xx < dstwidth; ++xx, rgba += 8, dst += 4)
const float* rgba0 = (const float*)&src[0];
const float* rgba1 = (const float*)&src[_pitch];
for (uint32_t xx = 0; xx < dstwidth; ++xx, rgba0 += 8, rgba1 += 8, dst += 16)
{
float xyz[3];
xyz[0] = rgba[ 0];
xyz[1] = rgba[ 1];
xyz[2] = rgba[ 2];
xyz[0] += rgba[ 4];
xyz[1] += rgba[ 5];
xyz[2] += rgba[ 6];
xyz[0] += rgba[_pitch+0];
xyz[1] += rgba[_pitch+1];
xyz[2] += rgba[_pitch+2];
xyz[0] += rgba[_pitch+4];
xyz[1] += rgba[_pitch+5];
xyz[2] += rgba[_pitch+6];
bx::vec3Norm(dst, xyz);
xyz[0] = rgba0[0];
xyz[1] = rgba0[1];
xyz[2] = rgba0[2];
xyz[0] += rgba0[4];
xyz[1] += rgba0[5];
xyz[2] += rgba0[6];
xyz[0] += rgba1[0];
xyz[1] += rgba1[1];
xyz[2] += rgba1[2];
xyz[0] += rgba1[4];
xyz[1] += rgba1[5];
xyz[2] += rgba1[6];
bx::vec3Norm( (float*)dst, xyz);
}
}
}
@ -2496,36 +2497,39 @@ namespace bgfx
void imageDecodeToRgba32f(bx::AllocatorI* _allocator, void* _dst, const void* _src, uint32_t _width, uint32_t _height, uint32_t _pitch, TextureFormat::Enum _format)
{
const uint8_t* src = (const uint8_t*)_src;
float* dst = (float*)_dst;
uint32_t width = _width/4;
uint32_t height = _height/4;
uint8_t* dst = (uint8_t*)_dst;
switch (_format)
{
case TextureFormat::BC5:
for (uint32_t yy = 0; yy < height; ++yy)
{
for (uint32_t xx = 0; xx < width; ++xx)
uint32_t width = _width/4;
uint32_t height = _height/4;
for (uint32_t yy = 0; yy < height; ++yy)
{
uint8_t temp[16*4];
decodeBlockDxt45A(temp+1, src);
src += 8;
decodeBlockDxt45A(temp+2, src);
src += 8;
for (uint32_t ii = 0; ii < 16; ++ii)
for (uint32_t xx = 0; xx < width; ++xx)
{
float nx = temp[ii*4+2]*2.0f/255.0f - 1.0f;
float ny = temp[ii*4+1]*2.0f/255.0f - 1.0f;
float nz = sqrtf(1.0f - nx*nx - ny*ny);
uint8_t temp[16*4];
float* block = &dst[( (yy + ii/4)*_pitch+xx*4+ii%4)*16];
block[0] = nx;
block[1] = ny;
block[2] = nz;
block[3] = 0.0f;
decodeBlockDxt45A(temp+1, src);
src += 8;
decodeBlockDxt45A(temp+2, src);
src += 8;
for (uint32_t ii = 0; ii < 16; ++ii)
{
float nx = temp[ii*4+2]*2.0f/255.0f - 1.0f;
float ny = temp[ii*4+1]*2.0f/255.0f - 1.0f;
float nz = sqrtf(1.0f - nx*nx - ny*ny);
const uint32_t offset = (yy + ii/4)*_pitch + (xx*4 + ii%4)*16;
float* block = (float*)&dst[offset];
block[0] = nx;
block[1] = ny;
block[2] = nz;
block[3] = 0.0f;
}
}
}
}

45
tools/texturec/texturec.cpp
View file

@ -331,6 +331,19 @@ int main(int _argc, const char* _argv[])
, mip.m_format
);
for (uint32_t yy = 0; yy < mip.m_height; ++yy)
{
for (uint32_t xx = 0; xx < mip.m_width; ++xx)
{
const uint32_t offset = (yy*mip.m_width + xx) * 4;
float* inout = &rgba[offset];
inout[0] = inout[0] * 2.0f/255.0f - 1.0f;
inout[1] = inout[1] * 2.0f/255.0f - 1.0f;
inout[2] = inout[2] * 2.0f/255.0f - 1.0f;
inout[3] = inout[3] * 2.0f/255.0f - 1.0f;
}
}
imageContainer.m_numMips = numMips;
imageContainer.m_size = imageGetSize(format, mip.m_width, mip.m_height, 0, false, numMips);
imageContainer.m_format = format;
@ -340,14 +353,12 @@ int main(int _argc, const char* _argv[])
for (uint8_t lod = 1; lod < numMips; ++lod)
{
ImageMip mip1;
imageGetRawData(imageContainer, 0, lod, output->data, output->size, mip1);
uint8_t* data = const_cast<uint8_t*>(mip1.m_data);
imageRgba32fDownsample2x2NormalMap(mip.m_width, mip.m_height, mip.m_width*16, rgba, rgba);
uint32_t width = bx::uint32_max(1, mip.m_width >>lod);
uint32_t height = bx::uint32_max(1, mip.m_height>>lod);
imageRgba32fDownsample2x2NormalMap(width, height, width*16, rgba, rgba);
imageEncodeFromRgba32f(data, rgba, width, height, format);
ImageMip dstMip;
imageGetRawData(imageContainer, 0, lod, output->data, output->size, dstMip);
uint8_t* data = const_cast<uint8_t*>(dstMip.m_data);
imageEncodeFromRgba32f(data, rgba, dstMip.m_width, dstMip.m_height, format);
}
}
else
@ -356,6 +367,14 @@ int main(int _argc, const char* _argv[])
temp = BX_ALLOC(&allocator, size);
uint8_t* rgba = (uint8_t*)temp;
imageDecodeToRgba8(rgba
, mip.m_data
, mip.m_width
, mip.m_height
, mip.m_width*mip.m_bpp/8
, mip.m_format
);
imageContainer.m_numMips = numMips;
imageContainer.m_size = imageGetSize(format, mip.m_width, mip.m_height, 0, false, numMips);
imageContainer.m_format = format;
@ -365,14 +384,12 @@ int main(int _argc, const char* _argv[])
for (uint8_t lod = 1; lod < numMips; ++lod)
{
ImageMip mip1;
imageGetRawData(imageContainer, 0, lod, output->data, output->size, mip1);
uint8_t* data = const_cast<uint8_t*>(mip1.m_data);
imageRgba8Downsample2x2(mip.m_width, mip.m_height, mip.m_width*4, rgba, rgba);
uint32_t width = bx::uint32_max(1, mip.m_width >>lod);
uint32_t height = bx::uint32_max(1, mip.m_height>>lod);
imageRgba8Downsample2x2(width, height, width*4, rgba, rgba);
imageEncodeFromRgba8(data, rgba, width, height, format);
ImageMip dstMip;
imageGetRawData(imageContainer, 0, lod, output->data, output->size, dstMip);
uint8_t* data = const_cast<uint8_t*>(dstMip.m_data);
imageEncodeFromRgba8(data, rgba, dstMip.m_width, dstMip.m_height, format);
}
}