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[chromium-blink-merge.git] / gpu / GLES2 / extensions / CHROMIUM / CHROMIUM_path_rendering.txt
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1 Name
3     CHROMIUM_path_rendering
5 Name Strings
7     GL_CHROMIUM_path_rendering
9 Version
11     Last Modifed Date: August 14, 2014
13 Dependencies
15     OpenGL ES 3.0 is required.
17 Overview
19     This extensions implements path rendering using
20     OpenGL API.
22 New Tokens
24     Accepted by the <matrixMode> parameter of MatrixLoadfCHROMIUM and
25     MatrixLoadIdentityCHROMIUM:
26     PATH_MODELVIEW_CHROMIUM                           0x1700
27     PATH_PROJECTION_CHROMIUM                          0x1701
29     Accepted by the <pname> parameter of GetIntegerv,
30     GetFloatv:
31     PATH_MODELVIEW_MATRIX_CHROMIUM                    0x0BA6
32     PATH_PROJECTION_MATRIX_CHROMIUM                   0x0BA7
35 New Procedures and Functions
37     void MatrixLoadfCHROMIUM(enum matrixMode, float* matrix)
39     Takes a pointer to a 4x4 matrix stored in column-major order as 16
40     consecutive ï¬‚oating-point values. The matrixMode specifies which
41     matrix, PATH_MODELVIEW_CHROMIUM or PATH_PROJECTION_CHROMIUM is used.
43     The funcition specifies either modelview or projection matrix
44     to be used with path rendering API calls.
46     void MatrixLoadIdentityCHROMIUM(enum matrixMode)
48     Effectively calls MatrixLoadf with the identity matrix.
50 Errors
52     None.
54 New State
56     Get Value                       Type   Get Command  Initial  Description
57     -----------------------------  -----  ------------ -------- -------------------
58     PATH_MODELVIEW_MATRIX_CHROMIUM  16xR   GetFloatv    all 0's  Current modelview
59                                                                  matrix for path rendering
60     PATH_PROJECTION_MATRIX_CHROMIUM 16xR   GetFloatv    all 0's  Current projection
61                                                                  matrix for path rendering
63 Revision History
65     14/8/2014    Documented the extension