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Context.cpp
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Context.cpp
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// Copyright (c) 2009-2011 Ignacio Castano <castano@gmail.com>
// Copyright (c) 2008-2009 NVIDIA Corporation -- Ignacio Castano <icastano@nvidia.com>
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#include "Context.h"
#include "nvtt.h"
#include "InputOptions.h"
#include "CompressionOptions.h"
#include "OutputOptions.h"
#include "Surface.h"
#include "icbc.h"
#include "CompressorDX9.h"
#include "CompressorDX10.h"
#include "CompressorDX11.h"
#include "CompressorRGB.h"
#include "cuda/CudaUtils.h"
#include "cuda/CudaCompressorDXT.h"
#include "nvimage/DirectDrawSurface.h"
#include "nvimage/KtxFile.h"
#include "nvimage/ColorBlock.h"
#include "nvimage/BlockDXT.h"
#include "nvimage/Image.h"
#include "nvimage/FloatImage.h"
#include "nvimage/Filter.h"
#include "nvimage/Quantize.h"
#include "nvimage/NormalMap.h"
#include "nvimage/PixelFormat.h"
#include "nvimage/ColorSpace.h"
#include "nvcore/Memory.h"
#include "nvcore/Ptr.h"
#include "nvcore/Array.inl"
using namespace nv;
using namespace nvtt;
Compressor::Compressor() : m(*new Compressor::Private())
{
// CUDA initialization.
m.cudaSupported = cuda::isHardwarePresent();
m.cudaEnabled = false;
m.cuda = NULL;
enableCudaAcceleration(m.cudaSupported);
m.dispatcher = &m.defaultDispatcher;
icbc::init_dxt1();
}
Compressor::~Compressor()
{
delete &m;
}
void Compressor::enableCudaAcceleration(bool enable)
{
if (m.cudaSupported)
{
m.cudaEnabled = enable;
}
if (m.cudaEnabled && m.cuda == NULL)
{
m.cuda = new CudaContext();
if (!m.cuda->isValid())
{
m.cudaEnabled = false;
m.cuda = NULL;
}
}
}
bool Compressor::isCudaAccelerationEnabled() const
{
return m.cudaEnabled;
}
void Compressor::setTaskDispatcher(TaskDispatcher * disp)
{
if (disp == NULL) {
m.dispatcher = &m.defaultDispatcher;
}
else {
m.dispatcher = disp;
}
}
// Input Options API.
bool Compressor::process(const InputOptions & inputOptions, const CompressionOptions & compressionOptions, const OutputOptions & outputOptions) const
{
return m.compress(inputOptions.m, compressionOptions.m, outputOptions.m);
}
int Compressor::estimateSize(const InputOptions & inputOptions, const CompressionOptions & compressionOptions) const
{
int w = inputOptions.m.width;
int h = inputOptions.m.height;
int d = inputOptions.m.depth;
getTargetExtent(&w, &h, &d, inputOptions.m.maxExtent, inputOptions.m.roundMode, inputOptions.m.textureType);
int mipmapCount = 1;
if (inputOptions.m.generateMipmaps) {
mipmapCount = countMipmaps(w, h, d);
if (inputOptions.m.maxLevel > 0) mipmapCount = min(mipmapCount, inputOptions.m.maxLevel);
}
return inputOptions.m.faceCount * estimateSize(w, h, d, mipmapCount, compressionOptions);
}
// Surface API.
bool Compressor::outputHeader(const Surface & tex, int mipmapCount, const CompressionOptions & compressionOptions, const OutputOptions & outputOptions) const
{
return m.outputHeader(tex.type(), tex.width(), tex.height(), tex.depth(), 1, mipmapCount, tex.isNormalMap(), compressionOptions.m, outputOptions.m);
}
bool Compressor::compress(const Surface & tex, int face, int mipmap, const CompressionOptions & compressionOptions, const OutputOptions & outputOptions) const
{
return m.compress(tex, face, mipmap, compressionOptions.m, outputOptions.m);
}
int Compressor::estimateSize(const Surface & tex, int mipmapCount, const CompressionOptions & compressionOptions) const
{
const int w = tex.width();
const int h = tex.height();
const int d = tex.depth();
return estimateSize(w, h, d, mipmapCount, compressionOptions);
}
bool Compressor::outputHeader(const CubeSurface & cube, int mipmapCount, const CompressionOptions & compressionOptions, const OutputOptions & outputOptions) const
{
return m.outputHeader(TextureType_Cube, cube.edgeLength(), cube.edgeLength(), 1, 1, mipmapCount, false, compressionOptions.m, outputOptions.m);
}
bool Compressor::compress(const CubeSurface & cube, int mipmap, const CompressionOptions & compressionOptions, const OutputOptions & outputOptions) const
{
for (int i = 0; i < 6; i++) {
if(!m.compress(cube.face(i), i, mipmap, compressionOptions.m, outputOptions.m)) {
return false;
}
}
return true;
}
int Compressor::estimateSize(const CubeSurface & cube, int mipmapCount, const CompressionOptions & compressionOptions) const
{
return 6 * estimateSize(cube.edgeLength(), cube.edgeLength(), 1, mipmapCount, compressionOptions);
}
// Raw API.
bool Compressor::outputHeader(TextureType type, int w, int h, int d, int arraySize, int mipmapCount, bool isNormalMap, const CompressionOptions & compressionOptions, const OutputOptions & outputOptions) const
{
return m.outputHeader(type, w, h, d, arraySize, mipmapCount, isNormalMap, compressionOptions.m, outputOptions.m);
}
bool Compressor::compress(int w, int h, int d, int face, int mipmap, const float * rgba, const CompressionOptions & compressionOptions, const OutputOptions & outputOptions) const
{
return m.compress(AlphaMode_None, w, h, d, face, mipmap, rgba, compressionOptions.m, outputOptions.m);
}
int Compressor::estimateSize(int w, int h, int d, int mipmapCount, const CompressionOptions & compressionOptions) const
{
const Format format = compressionOptions.m.format;
const uint bitCount = compressionOptions.m.getBitCount();
const uint pitchAlignment = compressionOptions.m.pitchAlignment;
int size = 0;
for (int m = 0; m < mipmapCount; m++)
{
size += computeImageSize(w, h, d, bitCount, pitchAlignment, format);
// Compute extents of next mipmap:
w = max(1, w / 2);
h = max(1, h / 2);
d = max(1, d / 2);
}
return size;
}
bool Compressor::Private::compress(const InputOptions::Private & inputOptions, const CompressionOptions::Private & compressionOptions, const OutputOptions::Private & outputOptions) const
{
// Make sure enums match.
nvStaticCheck(FloatImage::WrapMode_Clamp == (FloatImage::WrapMode)WrapMode_Clamp);
nvStaticCheck(FloatImage::WrapMode_Mirror == (FloatImage::WrapMode)WrapMode_Mirror);
nvStaticCheck(FloatImage::WrapMode_Repeat == (FloatImage::WrapMode)WrapMode_Repeat);
// Get output handler.
if (!outputOptions.hasValidOutputHandler()) {
outputOptions.error(Error_FileOpen);
return false;
}
const int faceCount = inputOptions.faceCount;
int width = inputOptions.width;
int height = inputOptions.height;
int depth = inputOptions.depth;
int arraySize = inputOptions.textureType == TextureType_Array ? faceCount : 1;
nv::getTargetExtent(&width, &height, &depth, inputOptions.maxExtent, inputOptions.roundMode, inputOptions.textureType);
// If the extents have not changed, then we can use source images for all mipmaps.
bool canUseSourceImages = (inputOptions.width == width && inputOptions.height == height && inputOptions.depth == depth);
int mipmapCount = 1;
if (inputOptions.generateMipmaps) {
mipmapCount = countMipmaps(width, height, depth);
if (inputOptions.maxLevel > 0) mipmapCount = min(mipmapCount, inputOptions.maxLevel);
}
if (!outputHeader(inputOptions.textureType, width, height, depth, arraySize, mipmapCount, inputOptions.isNormalMap, compressionOptions, outputOptions)) {
return false;
}
if (outputOptions.container != Container_KTX)
{
nvtt::Surface img;
img.setWrapMode(inputOptions.wrapMode);
img.setAlphaMode(inputOptions.alphaMode);
img.setNormalMap(inputOptions.isNormalMap);
// Output each face from the largest mipmap to the smallest.
for (int f = 0; f < faceCount; f++)
{
int w = width;
int h = height;
int d = depth;
bool canUseSourceImagesForThisFace = canUseSourceImages;
img.setImage(inputOptions.inputFormat, inputOptions.width, inputOptions.height, inputOptions.depth, inputOptions.images[f]);
// To normal map.
if (inputOptions.convertToNormalMap) {
img.toGreyScale(inputOptions.heightFactors.x, inputOptions.heightFactors.y, inputOptions.heightFactors.z, inputOptions.heightFactors.w);
img.toNormalMap(inputOptions.bumpFrequencyScale.x, inputOptions.bumpFrequencyScale.y, inputOptions.bumpFrequencyScale.z, inputOptions.bumpFrequencyScale.w);
}
// To linear space.
if (!img.isNormalMap()) {
img.toLinear(inputOptions.inputGamma);
}
// Resize input.
img.resize(w, h, d, ResizeFilter_Box);
nvtt::Surface tmp = img;
if (!img.isNormalMap()) {
tmp.toGamma(inputOptions.outputGamma);
}
quantize(tmp, compressionOptions);
compress(tmp, f, 0, compressionOptions, outputOptions);
for (int m = 1; m < mipmapCount; m++) {
w = max(1, w/2);
h = max(1, h/2);
d = max(1, d/2);
int idx = m * faceCount + f;
bool useSourceImages = false;
if (canUseSourceImagesForThisFace) {
if (inputOptions.images[idx] == NULL) { // One face is missing in this mipmap level.
canUseSourceImagesForThisFace = false; // If one level is missing, ignore the following source images.
}
else {
useSourceImages = true;
}
}
if (useSourceImages) {
img.setImage(inputOptions.inputFormat, w, h, d, inputOptions.images[idx]);
// For already generated mipmaps, we need to convert to linear.
if (!img.isNormalMap()) {
img.toLinear(inputOptions.inputGamma);
}
}
else {
if (inputOptions.mipmapFilter == MipmapFilter_Kaiser) {
float params[2] = { inputOptions.kaiserAlpha, inputOptions.kaiserStretch };
img.buildNextMipmap(MipmapFilter_Kaiser, inputOptions.kaiserWidth, params);
}
else {
img.buildNextMipmap(inputOptions.mipmapFilter);
}
}
nvDebugCheck(img.width() == w);
nvDebugCheck(img.height() == h);
nvDebugCheck(img.depth() == d);
if (img.isNormalMap()) {
if (inputOptions.normalizeMipmaps) {
img.expandNormals();
img.normalizeNormalMap();
img.packNormals();
}
tmp = img;
}
else {
tmp = img;
tmp.toGamma(inputOptions.outputGamma);
}
quantize(tmp, compressionOptions);
compress(tmp, f, m, compressionOptions, outputOptions);
}
}
}
else
{
// KTX files expect face mipmaps to be interleaved.
Array<nvtt::Surface> images(faceCount);
Array<bool> mipChainBroken(faceCount);
int w = width;
int h = height;
int d = depth;
// https://www.khronos.org/opengles/sdk/tools/KTX/file_format_spec/#2.16
uint imageSize = estimateSize(w, h, 1, 1, compressionOptions) * faceCount;
outputOptions.writeData(&imageSize, sizeof(uint32));
for (int f = 0; f < faceCount; f++)
{
nvtt::Surface s;
s.setWrapMode(inputOptions.wrapMode);
s.setAlphaMode(inputOptions.alphaMode);
s.setNormalMap(inputOptions.isNormalMap);
s.setImage(inputOptions.inputFormat, inputOptions.width, inputOptions.height, inputOptions.depth, inputOptions.images[f]);
// To normal map.
if (inputOptions.convertToNormalMap) {
s.toGreyScale(inputOptions.heightFactors.x, inputOptions.heightFactors.y, inputOptions.heightFactors.z, inputOptions.heightFactors.w);
s.toNormalMap(inputOptions.bumpFrequencyScale.x, inputOptions.bumpFrequencyScale.y, inputOptions.bumpFrequencyScale.z, inputOptions.bumpFrequencyScale.w);
}
// To linear space.
if (!s.isNormalMap()) {
s.toLinear(inputOptions.inputGamma);
}
// Resize input.
s.resize(w, h, d, ResizeFilter_Box);
nvtt::Surface tmp = s;
if (!s.isNormalMap()) {
tmp.toGamma(inputOptions.outputGamma);
}
quantize(tmp, compressionOptions);
compress(tmp, f, 0, compressionOptions, outputOptions);
images.push_back(s);
mipChainBroken.push_back(false);
}
static const unsigned char padding[3] = {0, 0, 0};
for (int m = 1; m < mipmapCount; m++)
{
w = max(1, w/2);
h = max(1, h/2);
d = max(1, d/2);
// https://www.khronos.org/opengles/sdk/tools/KTX/file_format_spec/#2.16
imageSize = estimateSize(w, h, d, 1, compressionOptions) * faceCount;
outputOptions.writeData(&imageSize, sizeof(uint32));
nvtt::Surface tmp;
for (int f = 0; f < faceCount; f++)
{
nvtt::Surface& img = images[f];
int idx = m * faceCount + f;
bool useSourceImages = false;
if (!mipChainBroken[f]) {
if (inputOptions.images[idx] == NULL) { // One face is missing in this mipmap level.
mipChainBroken[f] = false; // If one level is missing, ignore the following source images.
}
else {
useSourceImages = true;
}
}
if (useSourceImages) {
img.setImage(inputOptions.inputFormat, w, h, d, inputOptions.images[idx]);
// For already generated mipmaps, we need to convert to linear.
if (!img.isNormalMap()) {
img.toLinear(inputOptions.inputGamma);
}
}
else {
if (inputOptions.mipmapFilter == MipmapFilter_Kaiser) {
float params[2] = { inputOptions.kaiserStretch, inputOptions.kaiserAlpha };
img.buildNextMipmap(MipmapFilter_Kaiser, inputOptions.kaiserWidth, params);
}
else {
img.buildNextMipmap(inputOptions.mipmapFilter);
}
}
nvDebugCheck(img.width() == w);
nvDebugCheck(img.height() == h);
nvDebugCheck(img.depth() == d);
if (img.isNormalMap()) {
if (inputOptions.normalizeMipmaps) {
img.normalizeNormalMap();
}
tmp = img;
}
else {
tmp = img;
tmp.toGamma(inputOptions.outputGamma);
}
quantize(tmp, compressionOptions);
compress(tmp, f, m, compressionOptions, outputOptions);
//cube padding
if (faceCount == 6 && arraySize == 1)
{
//TODO calc offset for uncompressed images
}
}
int mipPadding = 3 - ((imageSize + 3) % 4);
if (mipPadding != 0) {
outputOptions.writeData(&padding, mipPadding);
}
}
}
return true;
}
bool Compressor::Private::compress(const Surface & tex, int face, int mipmap, const CompressionOptions::Private & compressionOptions, const OutputOptions::Private & outputOptions) const
{
if (!compress(tex.alphaMode(), tex.width(), tex.height(), tex.depth(), face, mipmap, tex.data(), compressionOptions, outputOptions)) {
return false;
}
return true;
}
bool Compressor::Private::compress(AlphaMode alphaMode, int w, int h, int d, int face, int mipmap, const float * rgba, const CompressionOptions::Private & compressionOptions, const OutputOptions::Private & outputOptions) const
{
int size = computeImageSize(w, h, d, compressionOptions.getBitCount(), compressionOptions.pitchAlignment, compressionOptions.format);
outputOptions.beginImage(size, w, h, d, face, mipmap);
// Decide what compressor to use.
AutoPtr<CompressorInterface> compressor;
#if defined HAVE_CUDA
if (cudaEnabled && w * h >= 512)
{
compressor = chooseGpuCompressor(compressionOptions);
}
#endif
if (compressor == NULL)
{
compressor = chooseCpuCompressor(compressionOptions);
}
if (compressor == NULL)
{
outputOptions.error(Error_UnsupportedFeature);
}
else
{
compressor->compress(alphaMode, w, h, d, rgba, dispatcher, compressionOptions, outputOptions);
}
outputOptions.endImage();
return true;
}
void Compressor::Private::quantize(Surface & img, const CompressionOptions::Private & compressionOptions) const
{
if (compressionOptions.enableColorDithering) {
if (compressionOptions.format >= Format_BC1 && compressionOptions.format <= Format_BC3) {
img.quantize(0, 5, true, true);
img.quantize(1, 6, true, true);
img.quantize(2, 5, true, true);
}
else if (compressionOptions.format == Format_RGB) {
img.quantize(0, compressionOptions.rsize, true, true);
img.quantize(1, compressionOptions.gsize, true, true);
img.quantize(2, compressionOptions.bsize, true, true);
}
}
if (compressionOptions.enableAlphaDithering) {
if (compressionOptions.format == Format_RGB) {
img.quantize(3, compressionOptions.asize, true, true);
}
}
else if (compressionOptions.binaryAlpha) {
img.binarize(3, float(compressionOptions.alphaThreshold)/255.0f, compressionOptions.enableAlphaDithering);
}
}
namespace
{
enum
{
// internal format
GL_RGB8 = 0x8051,
GL_RGBA8 = 0x8058,
GL_R16 = 0x822A,
GL_RGBA16F = 0x881A,
GL_R11F_G11F_B10F = 0x8C3A,
// type
GL_UNSIGNED_BYTE = 0x1401,
GL_HALF_FLOAT = 0x140B,
GL_UNSIGNED_INT_10F_11F_11F_REV = 0x8C3B,
GL_UNSIGNED_SHORT = 0x1403,
// format
GL_RED = 0x1903,
GL_RGB = 0x1907,
GL_RGBA = 0x1908,
GL_BGR = 0x80E0,
GL_BGRA = 0x80E1,
};
struct GLFormatDescriptor
{
uint glFormat; // for uncompressed texture glBaseInternalFormat == glFormat
uint glInternalFormat;
uint glType;
uint glTypeSize;
RGBAPixelFormat pixelFormat;
};
static const GLFormatDescriptor s_glFormats[] =
{
{ GL_BGR, GL_RGB8, GL_UNSIGNED_BYTE, 1, { 24, 0xFF0000, 0xFF00, 0xFF, 0 } },
{ GL_BGRA, GL_RGBA8, GL_UNSIGNED_BYTE, 1, { 32, 0xFF0000, 0xFF00, 0xFF, 0xFF000000 } },
{ GL_RGBA, GL_RGBA8, GL_UNSIGNED_BYTE, 1, { 32, 0xFF, 0xFF00, 0xFF0000, 0xFF000000 } },
};
static const uint s_glFormatCount = NV_ARRAY_SIZE(s_glFormats);
static const GLFormatDescriptor* findGLFormat(uint bitcount, uint rmask, uint gmask, uint bmask, uint amask)
{
for (int i = 0; i < s_glFormatCount; i++)
{
if (s_glFormats[i].pixelFormat.bitcount == bitcount &&
s_glFormats[i].pixelFormat.rmask == rmask &&
s_glFormats[i].pixelFormat.gmask == gmask &&
s_glFormats[i].pixelFormat.bmask == bmask &&
s_glFormats[i].pixelFormat.amask == amask)
{
return &s_glFormats[i];
}
}
return nullptr;
}
}
bool Compressor::Private::outputHeader(nvtt::TextureType textureType, int w, int h, int d, int arraySize, int mipmapCount, bool isNormalMap, const CompressionOptions::Private & compressionOptions, const OutputOptions::Private & outputOptions) const
{
if (w <= 0 || h <= 0 || d <= 0 || arraySize <= 0 || mipmapCount <= 0)
{
outputOptions.error(Error_InvalidInput);
return false;
}
if (!outputOptions.outputHeader)
{
return true;
}
// Output DDS header.
if (outputOptions.container == Container_DDS || outputOptions.container == Container_DDS10)
{
DDSHeader header;
header.setUserVersion(outputOptions.version);
if (textureType == TextureType_2D) {
nvCheck(arraySize == 1);
header.setTexture2D();
}
else if (textureType == TextureType_Cube) {
nvCheck(arraySize == 1);
header.setTextureCube();
}
else if (textureType == TextureType_3D) {
nvCheck(arraySize == 1);
header.setTexture3D();
header.setDepth(d);
}
else if (textureType == TextureType_Array) {
header.setTextureArray(arraySize);
}
header.setWidth(w);
header.setHeight(h);
header.setMipmapCount(mipmapCount);
bool supported = true;
if (outputOptions.container == Container_DDS10)
{
if (compressionOptions.format == Format_RGBA)
{
const uint bitcount = compressionOptions.getBitCount();
if (compressionOptions.pixelType == PixelType_Float) {
if (compressionOptions.rsize == 16 && compressionOptions.gsize == 16 && compressionOptions.bsize == 16 && compressionOptions.asize == 16) {
header.setDX10Format(DXGI_FORMAT_R16G16B16A16_FLOAT);
}
else if (compressionOptions.rsize == 11 && compressionOptions.gsize == 11 && compressionOptions.bsize == 10 && compressionOptions.asize == 0) {
header.setDX10Format(DXGI_FORMAT_R11G11B10_FLOAT);
}
else {
supported = false;
}
}
else {
if (bitcount == 16 && compressionOptions.rsize == 16) {
header.setDX10Format(DXGI_FORMAT_R16_UNORM);
}
else {
uint format = findDXGIFormat(compressionOptions.bitcount,
compressionOptions.rmask,
compressionOptions.gmask,
compressionOptions.bmask,
compressionOptions.amask);
if (format != DXGI_FORMAT_UNKNOWN) {
header.setDX10Format(format);
}
else {
supported = false;
}
}
}
}
else
{
if (compressionOptions.format == Format_DXT1 || compressionOptions.format == Format_DXT1a || compressionOptions.format == Format_DXT1n) {
header.setDX10Format(outputOptions.srgb ? DXGI_FORMAT_BC1_UNORM_SRGB : DXGI_FORMAT_BC1_UNORM);
if (compressionOptions.format == Format_DXT1a) header.setHasAlphaFlag(true);
if (isNormalMap) header.setNormalFlag(true);
}
else if (compressionOptions.format == Format_DXT3) {
header.setDX10Format(outputOptions.srgb ? DXGI_FORMAT_BC2_UNORM_SRGB : DXGI_FORMAT_BC2_UNORM);
}
else if (compressionOptions.format == Format_DXT5 || compressionOptions.format == Format_BC3_RGBM) {
header.setDX10Format(outputOptions.srgb ? DXGI_FORMAT_BC3_UNORM_SRGB : DXGI_FORMAT_BC3_UNORM);
}
else if (compressionOptions.format == Format_DXT5n) {
header.setDX10Format(DXGI_FORMAT_BC3_UNORM);
if (isNormalMap) header.setNormalFlag(true);
}
else if (compressionOptions.format == Format_BC4) {
header.setDX10Format(DXGI_FORMAT_BC4_UNORM); // DXGI_FORMAT_BC4_SNORM ?
}
else if (compressionOptions.format == Format_BC5 /*|| compressionOptions.format == Format_BC5_Luma*/) {
header.setDX10Format(DXGI_FORMAT_BC5_UNORM); // DXGI_FORMAT_BC5_SNORM ?
if (isNormalMap) header.setNormalFlag(true);
}
else if (compressionOptions.format == Format_BC6) {
if (compressionOptions.pixelType == PixelType_Float) header.setDX10Format(DXGI_FORMAT_BC6H_SF16);
/*if (compressionOptions.pixelType == PixelType_UnsignedFloat)*/ header.setDX10Format(DXGI_FORMAT_BC6H_UF16); // By default we assume unsigned.
}
else if (compressionOptions.format == Format_BC7) {
header.setDX10Format(outputOptions.srgb ? DXGI_FORMAT_BC7_UNORM_SRGB : DXGI_FORMAT_BC7_UNORM);
if (isNormalMap) header.setNormalFlag(true);
}
else if (compressionOptions.format == Format_CTX1) {
supported = false;
}
else {
supported = false;
}
}
}
else
{
if (compressionOptions.format == Format_RGBA)
{
// Get output bit count.
header.setPitch(computeBytePitch(w, compressionOptions.getBitCount(), compressionOptions.pitchAlignment));
if (compressionOptions.pixelType == PixelType_Float)
{
if (compressionOptions.rsize == 16 && compressionOptions.gsize == 0 && compressionOptions.bsize == 0 && compressionOptions.asize == 0)
{
header.setFormatCode(111); // D3DFMT_R16F
}
else if (compressionOptions.rsize == 16 && compressionOptions.gsize == 16 && compressionOptions.bsize == 0 && compressionOptions.asize == 0)
{
header.setFormatCode(112); // D3DFMT_G16R16F
}
else if (compressionOptions.rsize == 16 && compressionOptions.gsize == 16 && compressionOptions.bsize == 16 && compressionOptions.asize == 16)
{
header.setFormatCode(113); // D3DFMT_A16B16G16R16F
}
else if (compressionOptions.rsize == 32 && compressionOptions.gsize == 0 && compressionOptions.bsize == 0 && compressionOptions.asize == 0)
{
header.setFormatCode(114); // D3DFMT_R32F
}
else if (compressionOptions.rsize == 32 && compressionOptions.gsize == 32 && compressionOptions.bsize == 0 && compressionOptions.asize == 0)
{
header.setFormatCode(115); // D3DFMT_G32R32F
}
else if (compressionOptions.rsize == 32 && compressionOptions.gsize == 32 && compressionOptions.bsize == 32 && compressionOptions.asize == 32)
{
header.setFormatCode(116); // D3DFMT_A32B32G32R32F
}
else
{
supported = false;
}
}
else // Fixed point
{
const uint bitcount = compressionOptions.getBitCount();
if (compressionOptions.bitcount != 0)
{
// Masks already computed.
header.setPixelFormat(compressionOptions.bitcount, compressionOptions.rmask, compressionOptions.gmask, compressionOptions.bmask, compressionOptions.amask);
}
else if (bitcount <= 32)
{
// Compute pixel format masks.
const uint ashift = 0;
const uint bshift = ashift + compressionOptions.asize;
const uint gshift = bshift + compressionOptions.bsize;
const uint rshift = gshift + compressionOptions.gsize;
const uint rmask = ((1 << compressionOptions.rsize) - 1) << rshift;
const uint gmask = ((1 << compressionOptions.gsize) - 1) << gshift;
const uint bmask = ((1 << compressionOptions.bsize) - 1) << bshift;
const uint amask = ((1 << compressionOptions.asize) - 1) << ashift;
header.setPixelFormat(bitcount, rmask, gmask, bmask, amask);
}
else
{
supported = false;
}
}
}
else
{
header.setLinearSize(computeImageSize(w, h, d, compressionOptions.bitcount, compressionOptions.pitchAlignment, compressionOptions.format));
if (compressionOptions.format == Format_DXT1 || compressionOptions.format == Format_DXT1a || compressionOptions.format == Format_DXT1n) {
header.setFourCC('D', 'X', 'T', '1');
if (isNormalMap) header.setNormalFlag(true);
}
else if (compressionOptions.format == Format_DXT3) {
header.setFourCC('D', 'X', 'T', '3');
}
else if (compressionOptions.format == Format_DXT5 || compressionOptions.format == Format_BC3_RGBM) {
header.setFourCC('D', 'X', 'T', '5');
}
else if (compressionOptions.format == Format_DXT5n) {
header.setFourCC('D', 'X', 'T', '5');
if (isNormalMap) {
header.setNormalFlag(true);
header.setSwizzleCode('A', '2', 'D', '5');
//header.setSwizzleCode('x', 'G', 'x', 'R');
}
}
else if (compressionOptions.format == Format_BC4) {
header.setFourCC('A', 'T', 'I', '1');
}
else if (compressionOptions.format == Format_BC5 /*|| compressionOptions.format == Format_BC5_Luma*/) {
header.setFourCC('A', 'T', 'I', '2');
if (isNormalMap) {
header.setNormalFlag(true);
header.setSwizzleCode('A', '2', 'X', 'Y');
}
}
else if (compressionOptions.format == Format_BC6) {
header.setFourCC('Z', 'O', 'H', ' '); // This is not supported by D3DX. Always use DX10 header with BC6-7 formats.
supported = false;
}
else if (compressionOptions.format == Format_BC7) {
header.setFourCC('Z', 'O', 'L', 'A'); // This is not supported by D3DX. Always use DX10 header with BC6-7 formats.
if (isNormalMap) header.setNormalFlag(true);
supported = false;
}
else if (compressionOptions.format == Format_CTX1) {
header.setFourCC('C', 'T', 'X', '1');
if (isNormalMap) header.setNormalFlag(true);
}
else {
supported = false;
}
}
if (outputOptions.srgb) header.setSrgbFlag(true);
}
if (!supported)
{
// This container does not support the requested format.
outputOptions.error(Error_UnsupportedOutputFormat);
return false;
}
uint headerSize = 128;
if (header.hasDX10Header())
{
nvStaticCheck(sizeof(DDSHeader) == 128 + 20);
headerSize = 128 + 20;
}
// Swap bytes if necessary.
header.swapBytes();
bool writeSucceed = outputOptions.writeData(&header, headerSize);
if (!writeSucceed)
{
outputOptions.error(Error_FileWrite);
}
return writeSucceed;
}
else if (outputOptions.container == Container_KTX)
{
KtxHeader header;
// TODO cube arrays
if (textureType == TextureType_2D) {
nvCheck(arraySize == 1);
header.numberOfArrayElements = 0;
header.numberOfFaces = 1;
header.pixelDepth = 0;
}
else if (textureType == TextureType_Cube) {
nvCheck(arraySize == 1);
header.numberOfArrayElements = 0;
header.numberOfFaces = 6;
header.pixelDepth = 0;
}
else if (textureType == TextureType_3D) {
nvCheck(arraySize == 1);
header.numberOfArrayElements = 0;
header.numberOfFaces = 1;
header.pixelDepth = d;
}
else if (textureType == TextureType_Array) {
header.numberOfArrayElements = arraySize;
header.numberOfFaces = 1;
header.pixelDepth = 0; // Is it?
}
header.pixelWidth = w;
header.pixelHeight = h;
header.numberOfMipmapLevels = mipmapCount;
bool supported = true;
if (compressionOptions.format == Format_RGBA)
{
const uint bitcount = compressionOptions.getBitCount();
if (compressionOptions.pixelType == PixelType_Float) {
if (compressionOptions.rsize == 16 && compressionOptions.gsize == 16 && compressionOptions.bsize == 16 && compressionOptions.asize == 16) {
header.glType = GL_HALF_FLOAT;
header.glTypeSize = 2;
header.glFormat = GL_RGBA;
header.glInternalFormat = GL_RGBA16F;
header.glBaseInternalFormat = GL_RGBA;
}
else if (compressionOptions.rsize == 11 && compressionOptions.gsize == 11 && compressionOptions.bsize == 10 && compressionOptions.asize == 0) {
header.glType = GL_UNSIGNED_INT_10F_11F_11F_REV;
header.glTypeSize = 4;
header.glFormat = GL_RGB;
header.glInternalFormat = GL_R11F_G11F_B10F;
header.glBaseInternalFormat = GL_RGB;
}
else {
supported = false;
}
}
else {
if (bitcount == 16 && compressionOptions.rsize == 16) {
header.glType = GL_UNSIGNED_SHORT;
header.glTypeSize = 2;
header.glFormat = GL_RED;
header.glInternalFormat = GL_R16;
header.glBaseInternalFormat = GL_RED;
}
else {
const GLFormatDescriptor* glFormatDesc = findGLFormat(compressionOptions.bitcount, compressionOptions.rmask, compressionOptions.gmask, compressionOptions.bmask, compressionOptions.amask);
if (glFormatDesc) {
header.glType = glFormatDesc->glType;
header.glTypeSize = glFormatDesc->glTypeSize;
header.glFormat = glFormatDesc->glFormat;
header.glInternalFormat = glFormatDesc->glInternalFormat;
header.glBaseInternalFormat = header.glFormat;
}
else {
supported = false;
}
}
}
}
else
{
header.glType = 0;
header.glTypeSize = 1;
header.glFormat = 0;
if (compressionOptions.format == Format_DXT1 || compressionOptions.format == Format_DXT1n) {
header.glInternalFormat = outputOptions.srgb ? KTX_INTERNAL_COMPRESSED_SRGB_S3TC_DXT1 : KTX_INTERNAL_COMPRESSED_RGB_S3TC_DXT1;
header.glBaseInternalFormat = KTX_BASE_INTERNAL_RGB;
}
else if (compressionOptions.format == Format_DXT1a) {
header.glInternalFormat = outputOptions.srgb ? KTX_INTERNAL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1 : KTX_INTERNAL_COMPRESSED_RGBA_S3TC_DXT1;
header.glBaseInternalFormat = KTX_BASE_INTERNAL_RGBA;
}
else if (compressionOptions.format == Format_DXT3) {
header.glInternalFormat = outputOptions.srgb ? KTX_INTERNAL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3 : KTX_INTERNAL_COMPRESSED_RGBA_S3TC_DXT3;
header.glBaseInternalFormat = KTX_BASE_INTERNAL_RGBA;
}
else if (compressionOptions.format == Format_DXT5 || compressionOptions.format == Format_DXT5n || compressionOptions.format == Format_BC3_RGBM) {
header.glInternalFormat = outputOptions.srgb ? KTX_INTERNAL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5 : KTX_INTERNAL_COMPRESSED_RGBA_S3TC_DXT5;
header.glBaseInternalFormat = KTX_BASE_INTERNAL_RGBA;
}
else if (compressionOptions.format == Format_BC4) {
header.glInternalFormat = KTX_INTERNAL_COMPRESSED_RED_RGTC1; // KTX_INTERNAL_COMPRESSED_SIGNED_RED_RGTC1 ?
header.glBaseInternalFormat = KTX_BASE_INTERNAL_RED;
}
else if (compressionOptions.format == Format_BC5) {
header.glInternalFormat = KTX_INTERNAL_COMPRESSED_RG_RGTC2; // KTX_INTERNAL_COMPRESSED_SIGNED_RG_RGTC2 ?
header.glBaseInternalFormat = KTX_BASE_INTERNAL_RG;
}
else if (compressionOptions.format == Format_BC6) {
if (compressionOptions.pixelType == PixelType_Float) header.glInternalFormat = KTX_INTERNAL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT;
else /*if (compressionOptions.pixelType == PixelType_UnsignedFloat)*/ header.glInternalFormat = KTX_INTERNAL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT; // By default we assume unsigned.
header.glBaseInternalFormat = KTX_BASE_INTERNAL_RGB;
}
else if (compressionOptions.format == Format_BC7) {
header.glInternalFormat = outputOptions.srgb ? KTX_INTERNAL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM : KTX_INTERNAL_COMPRESSED_RGBA_BPTC_UNORM;
header.glBaseInternalFormat = KTX_BASE_INTERNAL_RGBA;
}
else if (compressionOptions.format == Format_ETC1) {
header.glInternalFormat = outputOptions.srgb ? KTX_INTERNAL_COMPRESSED_SRGB_ETC1 : KTX_INTERNAL_COMPRESSED_RGB_ETC1;
header.glBaseInternalFormat = KTX_BASE_INTERNAL_RGB;
}
else if (compressionOptions.format == Format_ETC2_R) {
header.glInternalFormat = KTX_INTERNAL_COMPRESSED_RED_EAC;
header.glBaseInternalFormat = KTX_BASE_INTERNAL_RED;
}
else if (compressionOptions.format == Format_ETC2_RG) {
header.glInternalFormat = KTX_INTERNAL_COMPRESSED_RG_EAC;
header.glBaseInternalFormat = KTX_BASE_INTERNAL_RG;