diff options
| author | toyoshim@chromium.org <toyoshim@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-04-19 05:54:17 +0000 |
|---|---|---|
| committer | toyoshim@chromium.org <toyoshim@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-04-19 05:54:17 +0000 |
| commit | 74345af2a98e16cd1157a74ff90aa6a95688446a (patch) | |
| tree | c60884fa51c50b79d322bcb953b17dba88024457 /gpu/GLES2 | |
| parent | ad117b1784c28bf1cfd80d6d7ea85079eff4019d (diff) | |
| download | chromium_src-74345af2a98e16cd1157a74ff90aa6a95688446a.zip chromium_src-74345af2a98e16cd1157a74ff90aa6a95688446a.tar.gz chromium_src-74345af2a98e16cd1157a74ff90aa6a95688446a.tar.bz2 | |
Revert 132934 - this change seems to break many webgl related layout tests
Introduction of CHROMIUM_copy_texture extension that respects pixel-store semantics, and allows copying of BGRA textures.
OpenGL ES does not natively allow for copying textures with a BGRA format. The EXT_texture_format_BGRA8888 extension does not specify support for glCopyTexImage calls on these textures.
This extension provides a routine to perform texture copies to/from BGRA-backed textures that also respects the following CHROMIUM pixel storage modifiers:
UNPACK_FLIP_Y_CHROMIUM
UNPACK_PREMULTIPLY_ALPHA_CHROMIUM
This extension will be useful for the following purposes:
- Copying accelerated Canvas2D contents to WebGL textures without a software readback. (And potentially the same for video-webgl texture copies.)
- Copying Canvas2D contents to the compositor backing store.
BUG=101051
TEST=none
Review URL: http://codereview.chromium.org/9968113
TBR=twiz@chromium.org
Review URL: https://chromiumcodereview.appspot.com/10078006
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@132958 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'gpu/GLES2')
| -rw-r--r-- | gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt b/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt deleted file mode 100644 index c48ac39..0000000 --- a/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt +++ /dev/null @@ -1,66 +0,0 @@ -Name - - CHROMIUM_copy_texture - -Name Strings - - GL_CHROMIUM_copy_texture - -Version - - Last Modifed Date: April 3, 2012 - -Dependencies - - OpenGL ES 2.0 is required. - - CHROMIUM_flipy affects the definition of this extension. - EXT_texture_format_BGRA8888 affects the definition of this extension. - -Overview - - This extension expands on the functionality provided by the - glCopyTexImage2D command. A new function is exported, - glCopyTextureCHROMIUM, that performs the same copy operation as - glCopyTexImage2D, while respecting the pixel-storage modifiers - UNPACK_FLIP_Y_CHROMIUM and GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM. - - The extension also supports copying BGRA textures, which is not explicitly - granted by EXT_texture_format_BGRA8888. - -New Procedures and Functions - - void glCopyTextureCHROMIUM (GLenum target, GLenum source_id, - GLenum dest_id, GLint level) - - Copies the contents of texture referred to by <source_id> to texture - <dest_id>. - - Texture level 0 is copied from the source image to level <level> of the - destination texture. - - <target> uses the same parameters as TexImage2D. - - INVALID_VALUE is generated if <target> is not GL_TEXTURE_2D. - - INVALID_VALUE is generated if <source_id> or <dest_id> are not valid texture - objects. - - INVALID_VALUE is generated if <level> is not a valid level of the - destination texture, or if level 0 of the source texture is not defined. - -Errors - - None. - -New Tokens - - None. - -New State - - None. - -Revision History - - 8/1/2011 Documented the extension |