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#include "UnityPrefix.h"
#include "TextureFormat.h"
#include "Runtime/Utilities/LogAssert.h"
// NOTE: match indices in kTexFormat* enum!
const static int kTextureByteTable[kTexFormatTotalCount] =
{
0,
1, // kTexFormatAlpha8
2, // kTexFormatARGB4444
3, // kTexFormatRGB24
4, // kTexFormatRGBA32
4, // kTexFormatARGB32
16, // kTexFormatARGBFloat
2, // kTexFormatRGB565
3, // kTexFormatBGR24
2, // kTexFormatAlphaLum16
0, // kTexFormatDXT1 (Depends on width, height, depth)
0, // kTexFormatDXT3 (Depends on width, height, depth)
0, // kTexFormatDXT5 (Depends on width, height, depth)
2, // kTexFormatRGBA4444
};
UInt32 GetBytesFromTextureFormat (TextureFormat inFormat)
{
AssertMsg (inFormat < kTexFormatDXT1 || inFormat == kTexFormatBGRA32 || inFormat == kTexFormatRGBA4444, "Invalid texture format: %d", (int)inFormat);
return (inFormat == kTexFormatBGRA32) ? 4 : kTextureByteTable[inFormat];
}
UInt32 GetMaxBytesPerPixel (TextureFormat inFormat)
{
Assert (GetBytesFromTextureFormat (inFormat) <= kTextureByteTable[kTexFormatARGBFloat]);
return kTextureByteTable[kTexFormatARGBFloat];
}
int GetRowBytesFromWidthAndFormat (int width, TextureFormat inFormat)
{
AssertMsg (inFormat < kTexFormatDXT1 || inFormat == kTexFormatBGRA32 || inFormat == kTexFormatRGBA4444, "Invalid texture format: %d", (int)inFormat);
return GetBytesFromTextureFormat (inFormat) * width;
}
bool IsValidTextureFormat (TextureFormat format)
{
if ((format >= kTexFormatAlpha8 && format <= kTexFormatRGBA4444) ||
IsCompressedPVRTCTextureFormat(format) ||
IsCompressedETCTextureFormat(format) ||
IsCompressedATCTextureFormat(format) ||
IsCompressedFlashATFTextureFormat (format) ||
IsCompressedETC2TextureFormat(format) ||
IsCompressedASTCTextureFormat(format) ||
IsCompressedEACTextureFormat(format) ||
format == kTexFormatBGRA32)
return true;
else
return false;
}
int GetTextureSizeAllowedMultiple( TextureFormat format )
{
if (IsCompressedDXTTextureFormat(format) || IsCompressedATCTextureFormat(format) || IsCompressedETCTextureFormat(format)
|| IsCompressedETC2TextureFormat(format) || IsCompressedEACTextureFormat(format))
return 4;
else
return 1;
}
int GetMinimumTextureMipSizeForFormat( TextureFormat format )
{
if (format == kTexFormatPVRTC_RGBA2 || format == kTexFormatPVRTC_RGB2)
return 16;
else if (format == kTexFormatPVRTC_RGBA4 || format == kTexFormatPVRTC_RGB4)
return 8;
else if (IsCompressedETCTextureFormat(format) || IsCompressedETC2TextureFormat(format) || IsCompressedEACTextureFormat(format))
return 4;
else if (IsCompressedATCTextureFormat(format))
return 4;
else if (IsCompressedASTCTextureFormat(format))
return 1;
else if (IsCompressedFlashATFTextureFormat(format))
return 1;
else if (IsCompressedDXTTextureFormat(format))
return 4;
else
return 1;
}
bool IsAlphaOnlyTextureFormat( TextureFormat format )
{
return format == kTexFormatAlpha8;
}
TextureFormat ConvertToAlphaTextureFormat (TextureFormat format)
{
if (format == kTexFormatRGB24 || format == kTexFormatBGR24)
return kTexFormatARGB32;
else if (format == kTexFormatRGB565)
return kTexFormatARGB4444;
else if (format == kTexFormatDXT1)
return kTexFormatDXT5;
else if (format == kTexFormatPVRTC_RGB2)
return kTexFormatPVRTC_RGBA2;
else if (format == kTexFormatPVRTC_RGB4)
return kTexFormatPVRTC_RGBA4;
else if (format == kTexFormatETC_RGB4)
return kTexFormatARGB4444;
else if (format == kTexFormatATC_RGB4)
return kTexFormatATC_RGBA8;
else if (IsCompressedFlashATFTextureFormat(format))
return kTexFormatFlashATF_RGBA_JPG;
else if (format == kTexFormatETC2_RGB)
return kTexFormatETC2_RGBA8;
else
return format;
}
bool HasAlphaTextureFormat( TextureFormat format )
{
return format == kTexFormatAlpha8 || format == kTexFormatARGB4444 || format == kTexFormatRGBA4444 || format == kTexFormatRGBA32 || format == kTexFormatARGB32
|| format == kTexFormatARGBFloat || format == kTexFormatAlphaLum16 || format == kTexFormatDXT5 || format == kTexFormatDXT3
|| format == kTexFormatPVRTC_RGBA2 || format == kTexFormatPVRTC_RGBA4 || format == kTexFormatATC_RGBA8 || format == kTexFormatBGRA32 || format == kTexFormatFlashATF_RGBA_JPG
|| format == kTexFormatETC2_RGBA1 || format == kTexFormatETC2_RGBA8 || (format >= kTexFormatASTC_RGBA_4x4 && format <= kTexFormatASTC_RGBA_12x12);
}
bool IsDepthRTFormat( RenderTextureFormat format )
{
return format == kRTFormatDepth || format == kRTFormatShadowMap;
}
bool IsHalfRTFormat( RenderTextureFormat format )
{
return format == kRTFormatARGBHalf || format == kRTFormatRGHalf || format == kRTFormatRHalf || IsDepthRTFormat(format);
}
const char* GetCompressionTypeString (TextureFormat format)
{
// Shortcut here, no sense in typing all block sizes in switchcase below
if(IsCompressedASTCTextureFormat(format))
return "ASTC";
switch (format)
{
case kTexFormatDXT1: return "DXT1";
case kTexFormatDXT3: return "DXT3";
case kTexFormatDXT5: return "DXT5";
case kTexFormatETC_RGB4: return "ETC1";
case kTexFormatETC2_RGB:
case kTexFormatETC2_RGBA1:
case kTexFormatETC2_RGBA8: return "ETC2";
case kTexFormatEAC_R:
case kTexFormatEAC_R_SIGNED:
case kTexFormatEAC_RG:
case kTexFormatEAC_RG_SIGNED: return "EAC";
case kTexFormatPVRTC_RGB2:
case kTexFormatPVRTC_RGBA2:
case kTexFormatPVRTC_RGB4:
case kTexFormatPVRTC_RGBA4: return "PVRTC";
case kTexFormatATC_RGB4:
case kTexFormatATC_RGBA8: return "ATC";
case kTexFormatFlashATF_RGB_DXT1: return "DXT1";
case kTexFormatFlashATF_RGBA_JPG: return "JPG";
case kTexFormatFlashATF_RGB_JPG: return "JPG";
default:
return "Uncompressed";
}
}
const char* GetTextureFormatString (TextureFormat format)
{
switch (format)
{
case kTexFormatAlpha8: return "Alpha 8";
case kTexFormatARGB4444: return "ARGB 16 bit";
case kTexFormatRGBA4444: return "RGBA 16 bit";
case kTexFormatRGB24: return "RGB 24 bit";
case kTexFormatRGBA32: return "RGBA 32 bit";
case kTexFormatARGB32: return "ARGB 32 bit";
case kTexFormatARGBFloat: return "ARGB float";
case kTexFormatRGB565: return "RGB 16 bit";
case kTexFormatBGR24: return "BGR 24 bit";
case kTexFormatAlphaLum16: return "Alpha 16 bit";
case kTexFormatDXT1: return "RGB Compressed DXT1";
case kTexFormatDXT3: return "RGBA Compressed DXT3";
case kTexFormatDXT5: return "RGBA Compressed DXT5";
// gles
case kTexFormatPVRTC_RGB2: return "RGB Compressed PVRTC 2 bits";
case kTexFormatPVRTC_RGBA2: return "RGBA Compressed PVRTC 2 bits";
case kTexFormatPVRTC_RGB4: return "RGB Compressed PVRTC 4 bits";
case kTexFormatPVRTC_RGBA4: return "RGBA Compressed PVRTC 4 bits";
case kTexFormatETC_RGB4: return "RGB Compressed ETC 4 bits";
case kTexFormatATC_RGB4: return "RGB Compressed ATC 4 bits";
case kTexFormatATC_RGBA8: return "RGBA Compressed ATC 8 bits";
case kTexFormatETC2_RGB: return "RGB Compressed ETC2 4 bits";
case kTexFormatETC2_RGBA1: return "RGB + 1-bit Alpha Compressed ETC2 4 bits";
case kTexFormatETC2_RGBA8: return "RGBA Compressed ETC2 8 bits";
case kTexFormatEAC_R: return "11-bit R Compressed EAC 4 bit";
case kTexFormatEAC_R_SIGNED: return "11-bit signed R Compressed EAC 4 bit";
case kTexFormatEAC_RG: return "11-bit RG Compressed EAC 8 bit";
case kTexFormatEAC_RG_SIGNED: return "11-bit signed RG Compressed EAC 8 bit";
#define STR_(x) #x
#define STR(x) STR_(x)
#define DO_ASTC(bx,by) case kTexFormatASTC_RGB_##bx##x##by : return "RGB Compressed ASTC " STR(bx) "x" STR(by) " block"; case kTexFormatASTC_RGBA_##bx##x##by : return "RGBA Compressed ASTC " STR(bx) "x" STR(by) " block"
DO_ASTC(4, 4);
DO_ASTC(5, 5);
DO_ASTC(6, 6);
DO_ASTC(8, 8);
DO_ASTC(10, 10);
DO_ASTC(12, 12);
#undef DO_ASTC
#undef STR
#undef STR_
// Flash
case kTexFormatFlashATF_RGB_DXT1: return "RGB Compressed DXT1";
case kTexFormatFlashATF_RGBA_JPG: return "RGBA JPG Compressed";
case kTexFormatFlashATF_RGB_JPG: return "RGB JPG Compressed";
case kTexFormatBGRA32: return "BGRA 32 bit";
default:
return "Unsupported";
}
}
const char* GetTextureColorSpaceString (TextureColorSpace colorSpace)
{
switch (colorSpace)
{
case kTexColorSpaceLinear: return "Linear";
case kTexColorSpaceSRGB: return "sRGB";
case kTexColorSpaceSRGBXenon: return "sRGB (Xenon)";
default: return "Unsupported";
}
}
TextureColorSpace ColorSpaceToTextureColorSpace(BuildTargetPlatform platform, ColorSpace colorSpace)
{
if (colorSpace == kGammaColorSpace)
return (platform == kBuildXBOX360) ? kTexColorSpaceSRGBXenon : kTexColorSpaceSRGB;
else
return kTexColorSpaceLinear;
}
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