Merge pull request #78 from fooishbar/dma-buf-modifiers-correct-no-modifiers
EXT_image_dma_buf_import_modifiers: Correct no-modifier-token behaviour
diff --git a/extensions/EXT/EGL_EXT_image_dma_buf_import_modifiers.txt b/extensions/EXT/EGL_EXT_image_dma_buf_import_modifiers.txt
index 2b470c7..41b91c0 100644
--- a/extensions/EXT/EGL_EXT_image_dma_buf_import_modifiers.txt
+++ b/extensions/EXT/EGL_EXT_image_dma_buf_import_modifiers.txt
@@ -24,7 +24,7 @@
Version
- Version 4, October 20, 2016
+ Version 5, March 12, 2019
Number
@@ -111,8 +111,10 @@
attribute values may be given. These attribute values together form an
unsigned 64-bit value called a format modifier. Format modifiers are
specified by drm_fourcc.h and used as the modifier parameter of the
- drm_mode_fb_cmd2 ioctl. If neither of the two attributes are given, the
- format modifier is assumed to be zero. The two attributes are:
+ drm_mode_fb_cmd2 ioctl. If neither of the two attributes are given, or
+ if the modifier is explicitly declared to be DRM_FORMAT_MOD_INVALID, the
+ effective format modifier is implementation-defined. The two attributes
+ are:
* EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT: The lowest 32 bits of the
64-bit format modifier.
@@ -220,6 +222,10 @@
Revision History
+#5 (Daniel Stone, March 12, 2019)
+ - Correct description of behaviour when a modifier is not explicitly given;
+ zero is not correct as it is an explicit modifier itself (linear).
+
#4 (Daniel Stone, October 20, 2016)
- Switch to EGLuint64KHR for modifier types.
