Index: gpu/GLES2/extensions/CHROMIUM/CHROMIUM_map_image.txt |
diff --git a/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_map_image.txt b/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_map_image.txt |
deleted file mode 100644 |
index 6304fdace0feeb68efe850ed3187722a73ec4ead..0000000000000000000000000000000000000000 |
--- a/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_map_image.txt |
+++ /dev/null |
@@ -1,107 +0,0 @@ |
-Name |
- |
- CHROMIUM_map_image |
- |
-Name Strings |
- |
- GL_CHROMIUM_map_image |
- |
-Version |
- |
- Last Modifed Date: May 9, 2013 |
- |
-Dependencies |
- |
- OpenGL ES 2.0 is required. |
- |
-Overview |
- |
- This extension allows for more efficient uploading of texture data through |
- Chromium's OpenGL ES 2.0 implementation. |
- |
- For security reasons Chromium accesses the GPU from a separate process. User |
- processes are not allowed to access the GPU directly. This multi-process |
- architechure has the advantage that GPU operations can be secured and |
- pipelined but it has the disadvantage that all data that is going to be |
- passed to GPU must first be made available to the separate GPU process. |
- |
- This extension helps the application directly allocate and access texture |
- memory. |
- |
-Issues |
- |
- None |
- |
-New Tokens |
- |
- None |
- |
-New Procedures and Functions |
- |
- GLuint CreateImageCHROMIUM (GLsizei width, GLsizei height, |
- GLenum internalformat) |
- |
- Allocate an image with width equal to <width> and height equal |
- to <height> stored in format <internalformat>. |
- |
- Returns a unique identifier for the allocated image that could be used |
- in subsequent operations. |
- |
- INVALID_VALUE is generated if <width> or <height> is nonpositive. |
- |
- void DestroyImageCHROMIUM (GLuint image_id) |
- |
- Frees the image previously allocated by a call to CreateImageCHROMIUM. |
- |
- INVALID_OPERATION is generated if <image_id> is not a valid image id. |
- |
- void* MapImageCHROMIUM (GLuint image_id, GLenum access) |
- |
- Returns a pointer to in the user memory for the application to modify |
- the image. <access> parameter defines if the user will read or write the |
- pixels. |
- |
- INVALID_OPERATION is generated if <image_id> is not a valid image id. |
- |
- INVALID_OPERATION is generated if the image was already mapped by a previous |
- call to this method. |
- |
- INVALID_ENUM is generated if <access> is not one of WRITE_ONLY, READ_ONLY |
- and READ_WRITE. |
- |
- void UnmapImageCHROMIUM (GLuint image_id) |
- |
- Removes the mapping created by a call to MapImageCHROMIUM. |
- |
- Note that after calling UnmapImageCHROMIUM the application should assume |
- that the memory returned by MapImageCHROMIUM is off limits and is no longer |
- accessible by the application. Accessing it after calling |
- UnmapImageCHROMIUM will produce undefined results. |
- |
- INVALID_OPERATION is generated if <image_id> is not a valid image id. |
- |
- INVALID_OPERATION is generated if the image was not already mapped by a |
- previous call to MapImageCHROMIUM. |
- |
- void GetImageParameterivCHROMIUM(GLuint image_id, GLenum pname, |
- GLint* params) |
- |
- Sets <params> to the integer value of the parameter specified by <pname> |
- for the image specified by <image_id>. <params> is expected to be |
- properly allocated before calling this method. |
- |
- INVALID_OPERATION is generated if <image_id> is not a valid image id. |
- |
- INVALID_ENUM is generated if <pname> is not IMAGE_ROWBYTES_CHROMIUM. |
- |
-Errors |
- |
- None. |
- |
-New State |
- |
- None. |
- |
-Revision History |
- |
- 5/9/2013 Documented the extension |