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Update rtextures.c

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Ray 2022-01-22 18:42:44 +01:00
parent 5b8b24c0c5
commit b422e407e8
1 changed files with 5 additions and 1 deletions
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6
src/rtextures.c
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@ -4324,6 +4324,7 @@ static Image LoadPKM(const unsigned char *fileData, unsigned int fileSize)
#if defined(SUPPORT_FILEFORMAT_KTX)
// Load KTX compressed image data (ETC1/ETC2 compression)
// TODO: Review KTX loading, many things changed!
static Image LoadKTX(const unsigned char *fileData, unsigned int fileSize)
{
unsigned char *fileDataPtr = (unsigned char *)fileData;
@ -4398,6 +4399,8 @@ static Image LoadKTX(const unsigned char *fileData, unsigned int fileSize)
if (ktxHeader->glInternalFormat == 0x8D64) image.format = PIXELFORMAT_COMPRESSED_ETC1_RGB;
else if (ktxHeader->glInternalFormat == 0x9274) image.format = PIXELFORMAT_COMPRESSED_ETC2_RGB;
else if (ktxHeader->glInternalFormat == 0x9278) image.format = PIXELFORMAT_COMPRESSED_ETC2_EAC_RGBA;
// TODO: Support uncompressed data formats? Right now it returns format = 0!
}
}
@ -4406,11 +4409,12 @@ static Image LoadKTX(const unsigned char *fileData, unsigned int fileSize)
// Save image data as KTX file
// NOTE: By default KTX 1.1 spec is used, 2.0 is still on draft (01Oct2018)
// TODO: Review KTX saving, many things changed!
static int SaveKTX(Image image, const char *fileName)
{
// KTX file Header (64 bytes)
// v1.1 - https://www.khronos.org/opengles/sdk/tools/KTX/file_format_spec/
// v2.0 - http://github.khronos.org/KTX-Specification/ - still on draft, not ready for implementation
// v2.0 - http://github.khronos.org/KTX-Specification/ - Final specs by 2021-04-18
typedef struct {
char id[12]; // Identifier: "«KTX 11»\r\n\x1A\n" // KTX 2.0: "«KTX 22»\r\n\x1A\n"
unsigned int endianness; // Little endian: 0x01 0x02 0x03 0x04