Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
PojavLauncherTeam
GitHub Repository: PojavLauncherTeam/angle
 Path: blob/main_old/extensions/ANGLE_compressed_texture_etc.txt
1693 views
1
Name

2


3
    ANGLE_compressed_texture_etc

4


5
Name Strings

6


7
    GL_ANGLE_compressed_texture_etc

8


9
Version

10


11
    Last Modifed Date: October 5, 2019

12


13
Dependencies

14


15
    OpenGL ES 2.0 is required.

16


17
Overview

18


19
    This extension exposes the OpenGL ES 3.0 core compressed texture

20
    formats in OpenGL ES 2.0.

21


22
New Procedures and Functions

23


24
    None

25


26
New Tokens

27


28
    Accepted by the <internalformat> parameter of CompressedTexImage2D and the

29
    <format> parameter of CompressedTexSubImage2D:

30


31
        COMPRESSED_R11_EAC                                0x9270

32
        COMPRESSED_SIGNED_R11_EAC                         0x9271

33
        COMPRESSED_RG11_EAC                               0x9272

34
        COMPRESSED_SIGNED_RG11_EAC                        0x9273

35
        COMPRESSED_RGB8_ETC2                              0x9274

36
        COMPRESSED_SRGB8_ETC2                             0x9275

37
        COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2          0x9276

38
        COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2         0x9277

39
        COMPRESSED_RGBA8_ETC2_EAC                         0x9278

40
        COMPRESSED_SRGB8_ALPHA8_ETC2_EAC                  0x9279

41


42
    Querying COMPRESSED_TEXTURE_FORMATS will include these new formats.

43


44
New Procedures and Functions

45


46
    None.

47


48
Errors

49


50
    The error INVALID_VALUE is generated if the <internalformat> parameter of

51
    CompressedTexImage2D or the <format> parameter of CompressedTexSubImage2D is

52
    COMPRESSED_R11_EAC, COMPRESSED_SIGNED_R11_EAC, COMPRESSED_RGB8_ETC2,

53
    COMPRESSED_SRGB8_ETC2, COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 or

54
    COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, and imageSize is not

55


56
        floor((width + 3) / 4) * floor((height + 3) / 4) * 8

57


58
    The error INVALID_VALUE is generated if the <internalformat> parameter of

59
    CompressedTexImage2D or the <format> paremeter of CompressedTexSubImage2D is

60
    COMPRESSED_RG11_EAC, COMPRESSED_SIGNED_RG11_EAC, COMPRESSED_RGBA8_ETC2_EAC,

61
    or COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, and imageSize is not

62


63
        floor((width + 3) / 4) * floor((height + 3) / 4) * 16

64


65


66
New State

67


68
    None.

69


70
Revision History

71


72
    9/19/2016   First revision

73
    10/5/2019   Rename to ANGLE_compressed_texture_etc

74


75