+/**
+ * Test if the given format is an ASTC 3D format.
+ */
+static bool
+is_astc_3d_format(GLenum internalFormat)
+{
+ switch (internalFormat) {
+ case GL_COMPRESSED_RGBA_ASTC_3x3x3_OES:
+ case GL_COMPRESSED_RGBA_ASTC_4x3x3_OES:
+ case GL_COMPRESSED_RGBA_ASTC_4x4x3_OES:
+ case GL_COMPRESSED_RGBA_ASTC_4x4x4_OES:
+ case GL_COMPRESSED_RGBA_ASTC_5x4x4_OES:
+ case GL_COMPRESSED_RGBA_ASTC_5x5x4_OES:
+ case GL_COMPRESSED_RGBA_ASTC_5x5x5_OES:
+ case GL_COMPRESSED_RGBA_ASTC_6x5x5_OES:
+ case GL_COMPRESSED_RGBA_ASTC_6x6x5_OES:
+ case GL_COMPRESSED_RGBA_ASTC_6x6x6_OES:
+ case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES:
+ case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES:
+ case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES:
+ case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES:
+ case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES:
+ case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES:
+ case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES:
+ case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES:
+ case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES:
+ case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES:
+ return true;
+ default:
+ return false;
+ }
+}
+
+/**
+ * Test if the given format is an ASTC format.
+ */
+GLboolean
+_mesa_is_astc_format(GLenum internalFormat)
+{
+ return is_astc_2d_format(internalFormat) ||
+ is_astc_3d_format(internalFormat);
+}
+
+/**
+ * Test if the given format is an ETC2 format.
+ */
+GLboolean
+_mesa_is_etc2_format(GLenum internalFormat)
+{
+ switch (internalFormat) {
+ case GL_COMPRESSED_RGB8_ETC2:
+ case GL_COMPRESSED_SRGB8_ETC2:
+ case GL_COMPRESSED_RGBA8_ETC2_EAC:
+ case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
+ case GL_COMPRESSED_R11_EAC:
+ case GL_COMPRESSED_RG11_EAC:
+ case GL_COMPRESSED_SIGNED_R11_EAC:
+ case GL_COMPRESSED_SIGNED_RG11_EAC:
+ case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
+ case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
+ return true;
+ default:
+ return false;
+ }
+}