Loading textures is done using an external program.

The following texture formats are supported:

• GL_COMPRESSED_RGBA8_ETC2_EAC

• GL_COMPRESSED_RGB8_ETC2

• GL_ETC1_RGB8_OES

• GL_LUMINANCE

• GL_ALPHA

• GL_RGBA4

• GL_RGBA with type GL_UNSIGNED_BYTE or GL_UNSIGNED_SHORT_4_4_4_4

• GL_RGB with type GL_UNSIGNED_BYTE

• GL_COMPRESSED_RGBA_ASTC_*_KHR

• GL_COMPRESSED_SRGB8_ALPHA_ASTC_*_KHR

In certain situations, you might want to view the textures with different alpha options. The following alpha modes are available:

Use Alpha

Does normal alpha blending using the alpha values in the texture.

Ignore Alpha

Ignores the alpha values in the texture and sets the alpha value for each pixel to its maximum, that is, fully opaque.

Visualize Alpha

Ignores the color information in the texture and shows the alpha values for each pixel. The alpha values are shown in a range from black (minimum alpha or fully transparent) to white (maximum alpha or fully opaque).