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74 lines
2.1 KiB
74 lines
2.1 KiB
Name
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ANGLE_compressed_texture_etc
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Name Strings
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GL_ANGLE_compressed_texture_etc
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Version
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Last Modifed Date: October 5, 2019
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Dependencies
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OpenGL ES 2.0 is required.
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Overview
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This extension exposes the OpenGL ES 3.0 core compressed texture
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formats in OpenGL ES 2.0.
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New Procedures and Functions
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None
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New Tokens
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Accepted by the <internalformat> parameter of CompressedTexImage2D and the
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<format> parameter of CompressedTexSubImage2D:
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COMPRESSED_R11_EAC 0x9270
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COMPRESSED_SIGNED_R11_EAC 0x9271
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COMPRESSED_RG11_EAC 0x9272
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COMPRESSED_SIGNED_RG11_EAC 0x9273
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COMPRESSED_RGB8_ETC2 0x9274
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COMPRESSED_SRGB8_ETC2 0x9275
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COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9276
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COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9277
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COMPRESSED_RGBA8_ETC2_EAC 0x9278
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COMPRESSED_SRGB8_ALPHA8_ETC2_EAC 0x9279
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Querying COMPRESSED_TEXTURE_FORMATS will include these new formats.
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New Procedures and Functions
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None.
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Errors
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The error INVALID_VALUE is generated if the <internalformat> parameter of
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CompressedTexImage2D or the <format> parameter of CompressedTexSubImage2D is
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COMPRESSED_R11_EAC, COMPRESSED_SIGNED_R11_EAC, COMPRESSED_RGB8_ETC2,
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COMPRESSED_SRGB8_ETC2, COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 or
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COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, and imageSize is not
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floor((width + 3) / 4) * floor((height + 3) / 4) * 8
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The error INVALID_VALUE is generated if the <internalformat> parameter of
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CompressedTexImage2D or the <format> paremeter of CompressedTexSubImage2D is
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COMPRESSED_RG11_EAC, COMPRESSED_SIGNED_RG11_EAC, COMPRESSED_RGBA8_ETC2_EAC,
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or COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, and imageSize is not
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floor((width + 3) / 4) * floor((height + 3) / 4) * 16
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New State
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None.
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Revision History
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9/19/2016 First revision
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10/5/2019 Rename to ANGLE_compressed_texture_etc
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