diff options
Diffstat (limited to 'libs/preview_dds_native/src/ddsformat.cpp')
| -rw-r--r-- | libs/preview_dds_native/src/ddsformat.cpp | 619 |
1 files changed, 0 insertions, 619 deletions
diff --git a/libs/preview_dds_native/src/ddsformat.cpp b/libs/preview_dds_native/src/ddsformat.cpp deleted file mode 100644 index b56db91..0000000 --- a/libs/preview_dds_native/src/ddsformat.cpp +++ /dev/null @@ -1,619 +0,0 @@ -#include "ddsformat.h" - -#include <QOpenGLFunctions> -#include <QString> - -#include <algorithm> -#include <cstring> - -// GL compressed format constants not always in headers -#ifndef GL_COMPRESSED_RGB_S3TC_DXT1_EXT -#define GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0 -#endif -#ifndef GL_COMPRESSED_RGBA_S3TC_DXT1_EXT -#define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1 -#endif -#ifndef GL_COMPRESSED_RGBA_S3TC_DXT3_EXT -#define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2 -#endif -#ifndef GL_COMPRESSED_RGBA_S3TC_DXT5_EXT -#define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3 -#endif -#ifndef GL_COMPRESSED_RED_RGTC1 -#define GL_COMPRESSED_RED_RGTC1 0x8DBB -#endif -#ifndef GL_COMPRESSED_SIGNED_RED_RGTC1 -#define GL_COMPRESSED_SIGNED_RED_RGTC1 0x8DBC -#endif -#ifndef GL_COMPRESSED_RG_RGTC2 -#define GL_COMPRESSED_RG_RGTC2 0x8DBD -#endif -#ifndef GL_COMPRESSED_SIGNED_RG_RGTC2 -#define GL_COMPRESSED_SIGNED_RG_RGTC2 0x8DBE -#endif -#ifndef GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT -#define GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT 0x8E8F -#endif -#ifndef GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT -#define GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT 0x8E8E -#endif -#ifndef GL_COMPRESSED_RGBA_BPTC_UNORM -#define GL_COMPRESSED_RGBA_BPTC_UNORM 0x8E8C -#endif -#ifndef GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM -#define GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM 0x8E8D -#endif -#ifndef GL_COMPRESSED_SRGB_S3TC_DXT1_EXT -#define GL_COMPRESSED_SRGB_S3TC_DXT1_EXT 0x8C4C -#endif -#ifndef GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT -#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT 0x8C4D -#endif -#ifndef GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT -#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT 0x8C4E -#endif -#ifndef GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT -#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT 0x8C4F -#endif - -static GLFormatInfo dxgiToGL(DXGIFormat fmt) -{ - GLFormatInfo info; - info.valid = true; - - switch (fmt) { - // BC1 (DXT1) - case DXGIFormat::BC1_UNORM: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; - break; - case DXGIFormat::BC1_UNORM_SRGB: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT; - break; - // BC2 (DXT3) - case DXGIFormat::BC2_UNORM: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; - break; - case DXGIFormat::BC2_UNORM_SRGB: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT; - break; - // BC3 (DXT5) - case DXGIFormat::BC3_UNORM: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; - break; - case DXGIFormat::BC3_UNORM_SRGB: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT; - break; - // BC4 - case DXGIFormat::BC4_UNORM: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_RED_RGTC1; - break; - case DXGIFormat::BC4_SNORM: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_SIGNED_RED_RGTC1; - break; - // BC5 - case DXGIFormat::BC5_UNORM: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_RG_RGTC2; - break; - case DXGIFormat::BC5_SNORM: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_SIGNED_RG_RGTC2; - break; - // BC6H - case DXGIFormat::BC6H_UF16: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT; - break; - case DXGIFormat::BC6H_SF16: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT; - break; - // BC7 - case DXGIFormat::BC7_UNORM: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_RGBA_BPTC_UNORM; - break; - case DXGIFormat::BC7_UNORM_SRGB: - info.compressed = true; - info.internalFormat = GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM; - break; - - // Uncompressed RGBA - case DXGIFormat::R8G8B8A8_UNORM: - case DXGIFormat::R8G8B8A8_UNORM_SRGB: - info.internalFormat = GL_RGBA8; - info.format = GL_RGBA; - info.type = GL_UNSIGNED_BYTE; - break; - case DXGIFormat::R8G8B8A8_UINT: - info.internalFormat = GL_RGBA8UI; - info.format = GL_RGBA_INTEGER; - info.type = GL_UNSIGNED_BYTE; - info.sampler = SamplerType::UInt; - break; - case DXGIFormat::R8G8B8A8_SNORM: - info.internalFormat = GL_RGBA8_SNORM; - info.format = GL_RGBA; - info.type = GL_BYTE; - break; - case DXGIFormat::R8G8B8A8_SINT: - info.internalFormat = GL_RGBA8I; - info.format = GL_RGBA_INTEGER; - info.type = GL_BYTE; - info.sampler = SamplerType::SInt; - break; - - // BGRA - case DXGIFormat::B8G8R8A8_UNORM: - case DXGIFormat::B8G8R8A8_UNORM_SRGB: - info.internalFormat = GL_RGBA8; - info.format = GL_BGRA; - info.type = GL_UNSIGNED_BYTE; - break; - case DXGIFormat::B8G8R8X8_UNORM: - case DXGIFormat::B8G8R8X8_UNORM_SRGB: - info.internalFormat = GL_RGBA8; - info.format = GL_BGRA; - info.type = GL_UNSIGNED_BYTE; - break; - - // 16-bit float - case DXGIFormat::R16G16B16A16_FLOAT: - info.internalFormat = GL_RGBA16F; - info.format = GL_RGBA; - info.type = GL_HALF_FLOAT; - break; - case DXGIFormat::R16G16B16A16_UNORM: - info.internalFormat = GL_RGBA16; - info.format = GL_RGBA; - info.type = GL_UNSIGNED_SHORT; - break; - case DXGIFormat::R16G16B16A16_UINT: - info.internalFormat = GL_RGBA16UI; - info.format = GL_RGBA_INTEGER; - info.type = GL_UNSIGNED_SHORT; - info.sampler = SamplerType::UInt; - break; - case DXGIFormat::R16G16B16A16_SNORM: - info.internalFormat = GL_RGBA16_SNORM; - info.format = GL_RGBA; - info.type = GL_SHORT; - break; - case DXGIFormat::R16G16B16A16_SINT: - info.internalFormat = GL_RGBA16I; - info.format = GL_RGBA_INTEGER; - info.type = GL_SHORT; - info.sampler = SamplerType::SInt; - break; - - // 32-bit float - case DXGIFormat::R32G32B32A32_FLOAT: - info.internalFormat = GL_RGBA32F; - info.format = GL_RGBA; - info.type = GL_FLOAT; - break; - case DXGIFormat::R32G32B32_FLOAT: - info.internalFormat = GL_RGB32F; - info.format = GL_RGB; - info.type = GL_FLOAT; - break; - - // RG formats - case DXGIFormat::R8G8_UNORM: - info.internalFormat = GL_RG8; - info.format = GL_RG; - info.type = GL_UNSIGNED_BYTE; - break; - case DXGIFormat::R16G16_FLOAT: - info.internalFormat = GL_RG16F; - info.format = GL_RG; - info.type = GL_HALF_FLOAT; - break; - case DXGIFormat::R16G16_UNORM: - info.internalFormat = GL_RG16; - info.format = GL_RG; - info.type = GL_UNSIGNED_SHORT; - break; - case DXGIFormat::R32G32_FLOAT: - info.internalFormat = GL_RG32F; - info.format = GL_RG; - info.type = GL_FLOAT; - break; - - // R formats - case DXGIFormat::R8_UNORM: - info.internalFormat = GL_R8; - info.format = GL_RED; - info.type = GL_UNSIGNED_BYTE; - break; - case DXGIFormat::R16_FLOAT: - info.internalFormat = GL_R16F; - info.format = GL_RED; - info.type = GL_HALF_FLOAT; - break; - case DXGIFormat::R16_UNORM: - info.internalFormat = GL_R16; - info.format = GL_RED; - info.type = GL_UNSIGNED_SHORT; - break; - case DXGIFormat::R32_FLOAT: - info.internalFormat = GL_R32F; - info.format = GL_RED; - info.type = GL_FLOAT; - break; - case DXGIFormat::A8_UNORM: - info.internalFormat = GL_R8; - info.format = GL_RED; - info.type = GL_UNSIGNED_BYTE; - break; - - // Packed formats - case DXGIFormat::R10G10B10A2_UNORM: - info.internalFormat = GL_RGB10_A2; - info.format = GL_RGBA; - info.type = GL_UNSIGNED_INT_2_10_10_10_REV; - break; - case DXGIFormat::R11G11B10_FLOAT: - info.internalFormat = GL_R11F_G11F_B10F; - info.format = GL_RGB; - info.type = GL_UNSIGNED_INT_10F_11F_11F_REV; - break; - case DXGIFormat::B5G6R5_UNORM: - info.internalFormat = GL_RGB565; - info.format = GL_RGB; - info.type = GL_UNSIGNED_SHORT_5_6_5; - break; - case DXGIFormat::B5G5R5A1_UNORM: - info.internalFormat = GL_RGB5_A1; - info.format = GL_BGRA; - info.type = GL_UNSIGNED_SHORT_1_5_5_5_REV; - break; - case DXGIFormat::B4G4R4A4_UNORM: - info.internalFormat = GL_RGBA4; - info.format = GL_BGRA; - info.type = GL_UNSIGNED_SHORT_4_4_4_4_REV; - break; - - default: - info.valid = false; - break; - } - - return info; -} - -DXGIFormat fourCCToDXGI(uint32_t fourCC) -{ - if (fourCC == makeFourCC('D', 'X', 'T', '1')) - return DXGIFormat::BC1_UNORM; - if (fourCC == makeFourCC('D', 'X', 'T', '3')) - return DXGIFormat::BC2_UNORM; - if (fourCC == makeFourCC('D', 'X', 'T', '5')) - return DXGIFormat::BC3_UNORM; - if (fourCC == makeFourCC('B', 'C', '4', 'U') || - fourCC == makeFourCC('A', 'T', 'I', '1')) - return DXGIFormat::BC4_UNORM; - if (fourCC == makeFourCC('B', 'C', '4', 'S')) - return DXGIFormat::BC4_SNORM; - if (fourCC == makeFourCC('A', 'T', 'I', '2') || - fourCC == makeFourCC('B', 'C', '5', 'U')) - return DXGIFormat::BC5_UNORM; - if (fourCC == makeFourCC('B', 'C', '5', 'S')) - return DXGIFormat::BC5_SNORM; - - // Numeric FourCC codes for float/half-float formats - switch (fourCC) { - case 36: - return DXGIFormat::R16G16B16A16_UNORM; - case 110: - return DXGIFormat::R16G16B16A16_SNORM; - case 111: - return DXGIFormat::R16_FLOAT; - case 112: - return DXGIFormat::R16G16_FLOAT; - case 113: - return DXGIFormat::R16G16B16A16_FLOAT; - case 114: - return DXGIFormat::R32_FLOAT; - case 115: - return DXGIFormat::R32G32_FLOAT; - case 116: - return DXGIFormat::R32G32B32A32_FLOAT; - default: - return DXGIFormat::UNKNOWN; - } -} - -// Helper: count trailing zeros / bit shift for a mask -static int maskShift(uint32_t mask) -{ - if (mask == 0) - return 0; - int shift = 0; - while ((mask & 1) == 0) { - mask >>= 1; - ++shift; - } - return shift; -} - -static int maskBits(uint32_t mask) -{ - int count = 0; - while (mask) { - count += mask & 1; - mask >>= 1; - } - return count; -} - -// Build a converter for arbitrary bitmask pixel formats -static GLFormatInfo buildBitmaskFormat(const DDSPixelFormat& pf) -{ - GLFormatInfo info; - info.valid = true; - - int rShift = maskShift(pf.dwRBitMask); - int gShift = maskShift(pf.dwGBitMask); - int bShift = maskShift(pf.dwBBitMask); - int aShift = maskShift(pf.dwABitMask); - int rBits = maskBits(pf.dwRBitMask); - int gBits = maskBits(pf.dwGBitMask); - int bBits = maskBits(pf.dwBBitMask); - int aBits = maskBits(pf.dwABitMask); - int bpp = pf.dwRGBBitCount; - - // Try to match common uncompressed formats directly - if (bpp == 32 && pf.dwRBitMask == 0x000000FF && pf.dwGBitMask == 0x0000FF00 && - pf.dwBBitMask == 0x00FF0000 && - (pf.dwABitMask == 0xFF000000 || pf.dwABitMask == 0)) { - info.internalFormat = GL_RGBA8; - info.format = GL_RGBA; - info.type = GL_UNSIGNED_BYTE; - return info; - } - if (bpp == 32 && pf.dwRBitMask == 0x00FF0000 && pf.dwGBitMask == 0x0000FF00 && - pf.dwBBitMask == 0x000000FF) { - info.internalFormat = GL_RGBA8; - info.format = GL_BGRA; - info.type = GL_UNSIGNED_BYTE; - return info; - } - - // Generic converter: extract channels and pack into RGBA8 - uint32_t rMask = pf.dwRBitMask; - uint32_t gMask = pf.dwGBitMask; - uint32_t bMask = pf.dwBBitMask; - uint32_t aMask = pf.dwABitMask; - bool hasAlpha = (pf.dwFlags & DDPF_ALPHAPIXELS) && aMask != 0; - int bytesPerPixel = bpp / 8; - - info.internalFormat = GL_RGBA8; - info.format = GL_RGBA; - info.type = GL_UNSIGNED_BYTE; - info.converter = [=](const QByteArray& data, int w, int h) -> QByteArray { - QByteArray result(w * h * 4, '\0'); - const uint8_t* src = reinterpret_cast<const uint8_t*>(data.constData()); - uint8_t* dst = reinterpret_cast<uint8_t*>(result.data()); - - for (int i = 0; i < w * h; ++i) { - uint32_t pixel = 0; - std::memcpy(&pixel, src + i * bytesPerPixel, - std::min(bytesPerPixel, 4)); - - int r = rBits > 0 ? ((pixel & rMask) >> rShift) * 255 / ((1 << rBits) - 1) : 0; - int g = gBits > 0 ? ((pixel & gMask) >> gShift) * 255 / ((1 << gBits) - 1) : 0; - int b = bBits > 0 ? ((pixel & bMask) >> bShift) * 255 / ((1 << bBits) - 1) : 0; - int a = hasAlpha && aBits > 0 - ? ((pixel & aMask) >> aShift) * 255 / ((1 << aBits) - 1) - : 255; - - dst[i * 4 + 0] = static_cast<uint8_t>(r); - dst[i * 4 + 1] = static_cast<uint8_t>(g); - dst[i * 4 + 2] = static_cast<uint8_t>(b); - dst[i * 4 + 3] = static_cast<uint8_t>(a); - } - return result; - }; - - return info; -} - -GLFormatInfo getGLFormat(const DDSPixelFormat& pf, const DDSHeaderDXT10* dxt10) -{ - // DX10 extended header takes priority - if (dxt10) { - return dxgiToGL(dxt10->dxgiFormat); - } - - // FourCC compressed or float formats - if (pf.dwFlags & DDPF_FOURCC) { - DXGIFormat dxgi = fourCCToDXGI(pf.dwFourCC); - if (dxgi != DXGIFormat::UNKNOWN) { - return dxgiToGL(dxgi); - } - GLFormatInfo info; - info.valid = false; - return info; - } - - // Uncompressed with bitmasks - if (pf.dwFlags & (DDPF_RGB | DDPF_LUMINANCE | DDPF_YUV | DDPF_ALPHA)) { - return buildBitmaskFormat(pf); - } - - GLFormatInfo info; - info.valid = false; - return info; -} - -static bool isBlockCompressed(DXGIFormat fmt) -{ - switch (fmt) { - case DXGIFormat::BC1_UNORM: - case DXGIFormat::BC1_UNORM_SRGB: - case DXGIFormat::BC2_UNORM: - case DXGIFormat::BC2_UNORM_SRGB: - case DXGIFormat::BC3_UNORM: - case DXGIFormat::BC3_UNORM_SRGB: - case DXGIFormat::BC4_UNORM: - case DXGIFormat::BC4_SNORM: - case DXGIFormat::BC5_UNORM: - case DXGIFormat::BC5_SNORM: - case DXGIFormat::BC6H_UF16: - case DXGIFormat::BC6H_SF16: - case DXGIFormat::BC7_UNORM: - case DXGIFormat::BC7_UNORM_SRGB: - return true; - default: - return false; - } -} - -static int blockSize(DXGIFormat fmt) -{ - switch (fmt) { - case DXGIFormat::BC1_UNORM: - case DXGIFormat::BC1_UNORM_SRGB: - case DXGIFormat::BC4_UNORM: - case DXGIFormat::BC4_SNORM: - return 8; - default: - return 16; - } -} - -uint32_t mipDataSize(DXGIFormat fmt, const DDSPixelFormat& pf, - uint32_t width, uint32_t height) -{ - if (isBlockCompressed(fmt)) { - uint32_t blocksW = std::max(1u, (width + 3) / 4); - uint32_t blocksH = std::max(1u, (height + 3) / 4); - return blocksW * blocksH * blockSize(fmt); - } - - // Uncompressed: use bits per pixel - uint32_t bpp = pf.dwRGBBitCount; - if (bpp == 0) { - // Estimate from DXGI format for non-bitmask formats - switch (fmt) { - case DXGIFormat::R32G32B32A32_FLOAT: - bpp = 128; - break; - case DXGIFormat::R32G32B32_FLOAT: - bpp = 96; - break; - case DXGIFormat::R16G16B16A16_FLOAT: - case DXGIFormat::R16G16B16A16_UNORM: - case DXGIFormat::R16G16B16A16_SNORM: - case DXGIFormat::R32G32_FLOAT: - bpp = 64; - break; - case DXGIFormat::R8G8B8A8_UNORM: - case DXGIFormat::R8G8B8A8_UNORM_SRGB: - case DXGIFormat::B8G8R8A8_UNORM: - case DXGIFormat::B8G8R8X8_UNORM: - case DXGIFormat::R16G16_FLOAT: - case DXGIFormat::R16G16_UNORM: - case DXGIFormat::R32_FLOAT: - case DXGIFormat::R10G10B10A2_UNORM: - case DXGIFormat::R11G11B10_FLOAT: - bpp = 32; - break; - case DXGIFormat::R8G8_UNORM: - case DXGIFormat::R16_FLOAT: - case DXGIFormat::R16_UNORM: - case DXGIFormat::B5G6R5_UNORM: - case DXGIFormat::B5G5R5A1_UNORM: - case DXGIFormat::B4G4R4A4_UNORM: - bpp = 16; - break; - case DXGIFormat::R8_UNORM: - case DXGIFormat::A8_UNORM: - bpp = 8; - break; - default: - bpp = 32; - break; - } - } - return width * height * bpp / 8; -} - -static const char* dxgiFormatName(DXGIFormat fmt) -{ - switch (fmt) { - case DXGIFormat::BC1_UNORM: - return "BC1_UNORM (DXT1)"; - case DXGIFormat::BC1_UNORM_SRGB: - return "BC1_UNORM_SRGB"; - case DXGIFormat::BC2_UNORM: - return "BC2_UNORM (DXT3)"; - case DXGIFormat::BC2_UNORM_SRGB: - return "BC2_UNORM_SRGB"; - case DXGIFormat::BC3_UNORM: - return "BC3_UNORM (DXT5)"; - case DXGIFormat::BC3_UNORM_SRGB: - return "BC3_UNORM_SRGB"; - case DXGIFormat::BC4_UNORM: - return "BC4_UNORM"; - case DXGIFormat::BC4_SNORM: - return "BC4_SNORM"; - case DXGIFormat::BC5_UNORM: - return "BC5_UNORM"; - case DXGIFormat::BC5_SNORM: - return "BC5_SNORM"; - case DXGIFormat::BC6H_UF16: - return "BC6H_UF16"; - case DXGIFormat::BC6H_SF16: - return "BC6H_SF16"; - case DXGIFormat::BC7_UNORM: - return "BC7_UNORM"; - case DXGIFormat::BC7_UNORM_SRGB: - return "BC7_UNORM_SRGB"; - case DXGIFormat::R8G8B8A8_UNORM: - return "R8G8B8A8_UNORM"; - case DXGIFormat::R8G8B8A8_UNORM_SRGB: - return "R8G8B8A8_UNORM_SRGB"; - case DXGIFormat::B8G8R8A8_UNORM: - return "B8G8R8A8_UNORM"; - case DXGIFormat::R16G16B16A16_FLOAT: - return "R16G16B16A16_FLOAT"; - case DXGIFormat::R32G32B32A32_FLOAT: - return "R32G32B32A32_FLOAT"; - default: - return "Unknown"; - } -} - -QString formatDescription(const DDSPixelFormat& pf, const DDSHeaderDXT10* dxt10) -{ - if (dxt10) { - return QString("DXGI: %1").arg(dxgiFormatName(dxt10->dxgiFormat)); - } - - if (pf.dwFlags & DDPF_FOURCC) { - char cc[5] = {0}; - std::memcpy(cc, &pf.dwFourCC, 4); - DXGIFormat dxgi = fourCCToDXGI(pf.dwFourCC); - if (dxgi != DXGIFormat::UNKNOWN) { - return QString("FourCC: %1 (%2)").arg(cc).arg(dxgiFormatName(dxgi)); - } - return QString("FourCC: %1").arg(cc); - } - - return QString("%1-bit R:0x%2 G:0x%3 B:0x%4 A:0x%5") - .arg(pf.dwRGBBitCount) - .arg(pf.dwRBitMask, 0, 16) - .arg(pf.dwGBitMask, 0, 16) - .arg(pf.dwBBitMask, 0, 16) - .arg(pf.dwABitMask, 0, 16); -} |