2 * Copyright (c) 2017 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "loader-ktx.h"
26 #include <dali/public-api/common/compile-time-assert.h>
27 #include <dali/integration-api/debug.h>
28 #include <dali/integration-api/bitmap.h>
29 #include <dali/public-api/images/pixel.h>
33 using Integration::Bitmap;
34 using Dali::Integration::PixelBuffer;
36 namespace TizenPlatform
42 /** Max width or height of an image. */
43 const unsigned MAX_TEXTURE_DIMENSION = 4096;
44 /** Max bytes of image data allowed. Not a precise number, just a sanity check. */
45 const unsigned MAX_IMAGE_DATA_SIZE = MAX_TEXTURE_DIMENSION * MAX_TEXTURE_DIMENSION;
46 /** We don't read any of this but limit it to a resonable amount in order to be
47 * friendly to files from random tools. */
48 const unsigned MAX_BYTES_OF_KEYVALUE_DATA = 65536U;
52 const Byte FileIdentifier[] = {
53 0xAB, 0x4B, 0x54, 0x58, 0x20, 0x31, 0x31, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A
57 /** The formats we support inside a KTX file container.
58 * Currently only compressed formats are allowed as we'd rather
59 * use a PNG or JPEG with their own compression for the general
61 enum KtxInternalFormat
65 // GLES 2 Extension formats:
66 KTX_ETC1_RGB8_OES = 0x8D64,
67 KTX_COMPRESSED_RGB_PVRTC_4BPPV1_IMG = 0x8C00,
69 // GLES 3 Standard compressed formats (values same as in gl3.h):
70 KTX_COMPRESSED_R11_EAC = 0x9270,
71 KTX_COMPRESSED_SIGNED_R11_EAC = 0x9271,
72 KTX_COMPRESSED_RG11_EAC = 0x9272,
73 KTX_COMPRESSED_SIGNED_RG11_EAC = 0x9273,
74 KTX_COMPRESSED_RGB8_ETC2 = 0x9274,
75 KTX_COMPRESSED_SRGB8_ETC2 = 0x9275,
76 KTX_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 = 0x9276,
77 KTX_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 = 0x9277,
78 KTX_COMPRESSED_RGBA8_ETC2_EAC = 0x9278,
79 KTX_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC = 0x9279,
81 // GLES 3.1 compressed formats:
82 KTX_COMPRESSED_RGBA_ASTC_4x4_KHR = 0x93B0,
83 KTX_COMPRESSED_RGBA_ASTC_5x4_KHR = 0x93B1,
84 KTX_COMPRESSED_RGBA_ASTC_5x5_KHR = 0x93B2,
85 KTX_COMPRESSED_RGBA_ASTC_6x5_KHR = 0x93B3,
86 KTX_COMPRESSED_RGBA_ASTC_6x6_KHR = 0x93B4,
87 KTX_COMPRESSED_RGBA_ASTC_8x5_KHR = 0x93B5,
88 KTX_COMPRESSED_RGBA_ASTC_8x6_KHR = 0x93B6,
89 KTX_COMPRESSED_RGBA_ASTC_8x8_KHR = 0x93B7,
90 KTX_COMPRESSED_RGBA_ASTC_10x5_KHR = 0x93B8,
91 KTX_COMPRESSED_RGBA_ASTC_10x6_KHR = 0x93B9,
92 KTX_COMPRESSED_RGBA_ASTC_10x8_KHR = 0x93BA,
93 KTX_COMPRESSED_RGBA_ASTC_10x10_KHR = 0x93BB,
94 KTX_COMPRESSED_RGBA_ASTC_12x10_KHR = 0x93BC,
95 KTX_COMPRESSED_RGBA_ASTC_12x12_KHR = 0x93BD,
96 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR = 0x93D0,
97 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR = 0x93D1,
98 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR = 0x93D2,
99 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR = 0x93D3,
100 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR = 0x93D4,
101 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR = 0x93D5,
102 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR = 0x93D6,
103 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR = 0x93D7,
104 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR = 0x93D8,
105 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR = 0x93D9,
106 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR = 0x93DA,
107 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR = 0x93DB,
108 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR = 0x93DC,
109 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR = 0x93DD,
111 // Uncompressed Alpha format
112 KTX_UNCOMPRESSED_ALPHA8 = 0x1906,
117 const unsigned KtxInternalFormats[] =
119 // GLES 2 Extension formats:
121 KTX_COMPRESSED_RGB_PVRTC_4BPPV1_IMG,
123 // GLES 3 Standard compressed formats:
124 KTX_COMPRESSED_R11_EAC,
125 KTX_COMPRESSED_SIGNED_R11_EAC,
126 KTX_COMPRESSED_RG11_EAC,
127 KTX_COMPRESSED_SIGNED_RG11_EAC,
128 KTX_COMPRESSED_RGB8_ETC2,
129 KTX_COMPRESSED_SRGB8_ETC2,
130 KTX_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2,
131 KTX_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2,
132 KTX_COMPRESSED_RGBA8_ETC2_EAC,
133 KTX_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC,
135 // GLES 3.1 Compressed formats:
136 KTX_COMPRESSED_RGBA_ASTC_4x4_KHR,
137 KTX_COMPRESSED_RGBA_ASTC_5x4_KHR,
138 KTX_COMPRESSED_RGBA_ASTC_5x5_KHR,
139 KTX_COMPRESSED_RGBA_ASTC_6x5_KHR,
140 KTX_COMPRESSED_RGBA_ASTC_6x6_KHR,
141 KTX_COMPRESSED_RGBA_ASTC_8x5_KHR,
142 KTX_COMPRESSED_RGBA_ASTC_8x6_KHR,
143 KTX_COMPRESSED_RGBA_ASTC_8x8_KHR,
144 KTX_COMPRESSED_RGBA_ASTC_10x5_KHR,
145 KTX_COMPRESSED_RGBA_ASTC_10x6_KHR,
146 KTX_COMPRESSED_RGBA_ASTC_10x8_KHR,
147 KTX_COMPRESSED_RGBA_ASTC_10x10_KHR,
148 KTX_COMPRESSED_RGBA_ASTC_12x10_KHR,
149 KTX_COMPRESSED_RGBA_ASTC_12x12_KHR,
150 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR,
151 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR,
152 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR,
153 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR,
154 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR,
155 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR,
156 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR,
157 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR,
158 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR,
159 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR,
160 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR,
161 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR,
162 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR,
163 KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR,
165 // Uncompressed Alpha format
166 KTX_UNCOMPRESSED_ALPHA8,
178 uint32_t glInternalFormat;
179 uint32_t glBaseInternalFormat;
181 uint32_t pixelHeight;
183 uint32_t numberOfArrayElements;
184 uint32_t numberOfFaces;
185 uint32_t numberOfMipmapLevels;
186 uint32_t bytesOfKeyValueData;
187 } __attribute__ ( (__packed__));
188 // Packed attribute stops the structure from being aligned to compiler defaults
189 // so we can be sure of reading the whole thing from file in one call to fread.
192 * Function to read from the file directly into our structure.
193 * @param[in] fp The file to read from
194 * @param[out] header The structure we want to store our information in
195 * @return true, if read successful, false otherwise
197 inline bool ReadHeader( FILE* filePointer, KtxFileHeader& header )
199 const unsigned int readLength = sizeof( KtxFileHeader );
201 // Load the information directly into our structure
202 if( fread( &header, 1, readLength, filePointer ) != readLength )
210 /** Check whether the array passed in is the right size and matches the magic
211 * values defined to be at the start of a KTX file by the specification.*/
212 template<int BYTES_IN_SIGNATURE>
213 bool CheckFileIdentifier(const Byte * const signature)
215 const unsigned signatureSize = BYTES_IN_SIGNATURE;
216 const unsigned identifierSize = sizeof(FileIdentifier);
217 DALI_COMPILE_TIME_ASSERT(signatureSize == identifierSize);
218 const bool signatureGood = 0 == memcmp( signature, FileIdentifier, std::min( signatureSize, identifierSize ) );
219 return signatureGood;
223 * @returns True if the argument is a GLES compressed texture format that we support.
225 bool ValidInternalFormat(const unsigned format)
227 unsigned candidateFormat = 0;
228 for(unsigned iFormat = 0; (candidateFormat = KtxInternalFormats[iFormat]) != KTX_SENTINEL; ++iFormat)
230 if(format == candidateFormat)
235 DALI_LOG_ERROR("Rejecting unsupported compressed format when loading compressed texture from KTX file: 0x%x.\n", format);
240 * @returns The Pixel::Format Dali enum corresponding to the KTX internal format
241 * passed in, or Pixel::INVALID_PIXEL_FORMAT if the format is not valid.
243 bool ConvertPixelFormat(const uint32_t ktxPixelFormat, Dali::Pixel::Format& format)
245 using namespace Dali::Pixel;
246 switch(ktxPixelFormat)
248 // GLES 2 extension compressed formats:
249 case KTX_ETC1_RGB8_OES:
251 format = COMPRESSED_RGB8_ETC1;
254 case KTX_COMPRESSED_RGB_PVRTC_4BPPV1_IMG:
256 format = COMPRESSED_RGB_PVRTC_4BPPV1;
260 // GLES 3 extension compressed formats:
261 case KTX_COMPRESSED_R11_EAC:
263 format = COMPRESSED_R11_EAC;
266 case KTX_COMPRESSED_SIGNED_R11_EAC:
268 format = COMPRESSED_SIGNED_R11_EAC;
271 case KTX_COMPRESSED_RG11_EAC:
273 format = COMPRESSED_RG11_EAC;
276 case KTX_COMPRESSED_SIGNED_RG11_EAC:
278 format = COMPRESSED_SIGNED_RG11_EAC;
281 case KTX_COMPRESSED_RGB8_ETC2:
283 format = COMPRESSED_RGB8_ETC2;
286 case KTX_COMPRESSED_SRGB8_ETC2:
288 format = COMPRESSED_SRGB8_ETC2;
291 case KTX_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
293 format = COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2;
296 case KTX_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
298 format = COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2;
301 case KTX_COMPRESSED_RGBA8_ETC2_EAC:
303 format = COMPRESSED_RGBA8_ETC2_EAC;
306 case KTX_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
308 format = COMPRESSED_SRGB8_ALPHA8_ETC2_EAC;
312 // GLES 3.1 extension compressed formats:
313 case KTX_COMPRESSED_RGBA_ASTC_4x4_KHR:
315 format = COMPRESSED_RGBA_ASTC_4x4_KHR;
318 case KTX_COMPRESSED_RGBA_ASTC_5x4_KHR:
320 format = COMPRESSED_RGBA_ASTC_5x4_KHR;
323 case KTX_COMPRESSED_RGBA_ASTC_5x5_KHR:
325 format = COMPRESSED_RGBA_ASTC_5x5_KHR;
328 case KTX_COMPRESSED_RGBA_ASTC_6x5_KHR:
330 format = COMPRESSED_RGBA_ASTC_6x5_KHR;
333 case KTX_COMPRESSED_RGBA_ASTC_6x6_KHR:
335 format = COMPRESSED_RGBA_ASTC_6x6_KHR;
338 case KTX_COMPRESSED_RGBA_ASTC_8x5_KHR:
340 format = COMPRESSED_RGBA_ASTC_8x5_KHR;
343 case KTX_COMPRESSED_RGBA_ASTC_8x6_KHR:
345 format = COMPRESSED_RGBA_ASTC_8x6_KHR;
348 case KTX_COMPRESSED_RGBA_ASTC_8x8_KHR:
350 format = COMPRESSED_RGBA_ASTC_8x8_KHR;
353 case KTX_COMPRESSED_RGBA_ASTC_10x5_KHR:
355 format = COMPRESSED_RGBA_ASTC_10x5_KHR;
358 case KTX_COMPRESSED_RGBA_ASTC_10x6_KHR:
360 format = COMPRESSED_RGBA_ASTC_10x6_KHR;
363 case KTX_COMPRESSED_RGBA_ASTC_10x8_KHR:
365 format = COMPRESSED_RGBA_ASTC_10x8_KHR;
368 case KTX_COMPRESSED_RGBA_ASTC_10x10_KHR:
370 format = COMPRESSED_RGBA_ASTC_10x10_KHR;
373 case KTX_COMPRESSED_RGBA_ASTC_12x10_KHR:
375 format = COMPRESSED_RGBA_ASTC_12x10_KHR;
378 case KTX_COMPRESSED_RGBA_ASTC_12x12_KHR:
380 format = COMPRESSED_RGBA_ASTC_12x12_KHR;
383 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR:
385 format = COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR;
388 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR:
390 format = COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR;
393 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR:
395 format = COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR;
398 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR:
400 format = COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR;
403 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR:
405 format = COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR;
408 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR:
410 format = COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR;
413 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR:
415 format = COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR;
418 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR:
420 format = COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR;
423 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR:
425 format = COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR;
428 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR:
430 format = COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR;
433 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR:
435 format = COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR;
438 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR:
440 format = COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR;
443 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR:
445 format = COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR;
448 case KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR:
450 format = COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR;
454 // Uncompressed Alpha format
455 case KTX_UNCOMPRESSED_ALPHA8:
469 bool LoadKtxHeader( FILE * const fp, unsigned int& width, unsigned int& height, KtxFileHeader& fileHeader )
471 // Pull the bytes of the file header in as a block:
472 if ( !ReadHeader( fp, fileHeader ) )
476 width = fileHeader.pixelWidth;
477 height = fileHeader.pixelHeight;
479 if ( width > MAX_TEXTURE_DIMENSION || height > MAX_TEXTURE_DIMENSION )
484 // Validate file header contents meet our minimal subset:
485 const bool signatureGood = CheckFileIdentifier<sizeof(fileHeader.identifier)>(fileHeader.identifier);
486 const bool fileEndiannessMatchesSystemEndianness = fileHeader.endianness == 0x04030201; // Magic number from KTX spec.
487 const bool glTypeIsCompressed = fileHeader.glType == 0;
488 const bool glTypeSizeCompatibleWithCompressedTex = fileHeader.glTypeSize == 1;
489 const bool glFormatCompatibleWithCompressedTex = fileHeader.glFormat == 0;
490 const bool glInternalFormatIsSupportedCompressedTex = ValidInternalFormat(fileHeader.glInternalFormat);
491 // Ignore glBaseInternalFormat
492 const bool textureIsNot3D = fileHeader.pixelDepth == 0 || fileHeader.pixelDepth == 1;
493 const bool textureIsNotAnArray = fileHeader.numberOfArrayElements == 0 || fileHeader.numberOfArrayElements == 1;
494 const bool textureIsNotACubemap = fileHeader.numberOfFaces == 0 || fileHeader.numberOfFaces == 1;
495 const bool textureHasNoMipmapLevels = fileHeader.numberOfMipmapLevels == 0 || fileHeader.numberOfMipmapLevels == 1;
496 const bool keyValueDataNotTooLarge = fileHeader.bytesOfKeyValueData <= MAX_BYTES_OF_KEYVALUE_DATA;
498 bool headerIsValid = signatureGood && fileEndiannessMatchesSystemEndianness &&
499 glTypeSizeCompatibleWithCompressedTex && textureIsNot3D && textureIsNotAnArray &&
500 textureIsNotACubemap && textureHasNoMipmapLevels && keyValueDataNotTooLarge;
502 if( !glTypeIsCompressed ) // check for uncompressed Alpha
504 const bool isAlpha = ( ( fileHeader.glBaseInternalFormat == KTX_UNCOMPRESSED_ALPHA8 ) && ( fileHeader.glFormat == KTX_UNCOMPRESSED_ALPHA8 ) &&
505 ( fileHeader.glInternalFormat == KTX_UNCOMPRESSED_ALPHA8 ) );
506 headerIsValid = headerIsValid && isAlpha;
510 headerIsValid = headerIsValid && glFormatCompatibleWithCompressedTex && glInternalFormatIsSupportedCompressedTex;
515 DALI_LOG_ERROR( "KTX file invalid or using unsupported features. Header tests: sig: %d, endian: %d, gl_type: %d, gl_type_size: %d, gl_format: %d, internal_format: %d, depth: %d, array: %d, faces: %d, mipmap: %d, vey-vals: %d.\n", 0+signatureGood, 0+fileEndiannessMatchesSystemEndianness, 0+glTypeIsCompressed, 0+glTypeSizeCompatibleWithCompressedTex, 0+glFormatCompatibleWithCompressedTex, 0+glInternalFormatIsSupportedCompressedTex, 0+textureIsNot3D, 0+textureIsNotAnArray, 0+textureIsNotACubemap, 0+textureHasNoMipmapLevels, 0+keyValueDataNotTooLarge);
518 // Warn if there is space wasted in the file:
519 if( fileHeader.bytesOfKeyValueData > 0U )
521 DALI_LOG_WARNING("Loading of KTX file with key/value header data requested. This should be stripped in application asset/resource build.\n");
524 return headerIsValid;
528 } // unnamed namespace
530 // File loading API entry-point:
531 bool LoadKtxHeader( const ImageLoader::Input& input, unsigned int& width, unsigned int& height )
533 KtxFileHeader fileHeader;
534 FILE* const fp = input.file;
536 bool ret = LoadKtxHeader(fp, width, height, fileHeader);
540 // File loading API entry-point:
541 bool LoadBitmapFromKtx( const ImageLoader::Input& input, Integration::Bitmap& bitmap )
543 DALI_COMPILE_TIME_ASSERT( sizeof(Byte) == 1);
544 DALI_COMPILE_TIME_ASSERT( sizeof(uint32_t) == 4);
546 FILE* const fp = input.file;
549 DALI_LOG_ERROR( "Null file handle passed to KTX compressed bitmap file loader.\n" );
552 KtxFileHeader fileHeader;
554 // Load the header info
555 unsigned int width, height;
557 if (!LoadKtxHeader(fp, width, height, fileHeader))
562 // Skip the key-values:
563 const long int imageSizeOffset = sizeof(KtxFileHeader) + fileHeader.bytesOfKeyValueData;
564 if(fseek(fp, imageSizeOffset, SEEK_SET))
566 DALI_LOG_ERROR( "Seek past key/vals in KTX compressed bitmap file failed.\n" );
570 // Load the size of the image data:
571 uint32_t imageByteCount = 0;
572 if ( fread( &imageByteCount, 1, 4, fp ) != 4 )
574 DALI_LOG_ERROR( "Read of image size failed.\n" );
577 // Sanity-check the image size:
578 if( imageByteCount > MAX_IMAGE_DATA_SIZE ||
579 // A compressed texture should certainly be less than 2 bytes per texel:
580 imageByteCount > width * height * 2)
582 DALI_LOG_ERROR( "KTX file with too-large image-data field.\n" );
586 Pixel::Format pixelFormat;
587 const bool pixelFormatKnown = ConvertPixelFormat(fileHeader.glInternalFormat, pixelFormat);
588 if(!pixelFormatKnown)
590 DALI_LOG_ERROR( "No internal pixel format supported for KTX file pixel format.\n" );
594 // Load up the image bytes:
595 PixelBuffer* const pixels = bitmap.GetCompressedProfile()->ReserveBufferOfSize( pixelFormat, width, height, imageByteCount );
598 DALI_LOG_ERROR( "Unable to reserve a pixel buffer to load the requested bitmap into.\n" );
601 const size_t bytesRead = fread(pixels, 1, imageByteCount, fp);
602 if(bytesRead != imageByteCount)
604 DALI_LOG_ERROR( "Read of image pixel data failed.\n" );
611 } // namespace TizenPlatform