command_buffer: Implement path rendering functions for CHROMIUM_path_rendering

ui/gl/generate_bindings.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """code generator for GL/GLES extension wrangler."""
 
 import optparse
 import os
 import collections
@@ skipping 18 matching lines @@
   'GL_CHROMIUM_egl_khr_fence_sync_hack', # crbug.com/504758
 ])
 
 """Function binding conditions can be specified manually by supplying a versions
 array instead of the names array. Each version has the following keys:
    name: Mandatory. Name of the function. Multiple versions can have the same
          name but different conditions.
    extensions: Extra Extensions for which the function is bound. Only needed
                in some cases where the extension cannot be parsed from the
                headers.
-
+   is_optional: True if the GetProcAddress can return NULL for the
+                function.  This may happen for example when functions
+                are added to a new version of an extension, but the
+                extension string is not modified.
 By default, the function gets its name from the first name in its names or
 versions array. This can be overridden by supplying a 'known_as' key.
+
 """
 GL_FUNCTIONS = [
 { 'return_type': 'void',
   'names': ['glActiveTexture'],
   'arguments': 'GLenum texture', },
 { 'return_type': 'void',
   'names': ['glAttachShader'],
   'arguments': 'GLuint program, GLuint shader', },
 { 'return_type': 'void',
   'versions': [{ 'name': 'glBeginQuery' },
@@ skipping 176 matching lines @@
 { 'return_type': 'void',
   'names': ['glCopyTexSubImage2D'],
   'arguments':
       'GLenum target, GLint level, GLint xoffset, '
       'GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height', },
 { 'return_type': 'void',
   'versions': [{ 'name': 'glCopyTexSubImage3D' }],
   'arguments':
       'GLenum target, GLint level, GLint xoffset, GLint yoffset, '
       'GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height', },
+{ 'return_type': 'void',
+  'names': ['glCoverFillPathNV'],
+  'arguments': 'GLuint path, GLenum coverMode' },
+{ 'return_type': 'void',
+  'names': ['glCoverStrokePathNV'],
+  'arguments': 'GLuint name, GLenum coverMode' },
 { 'return_type': 'GLuint',
   'names': ['glCreateProgram'],
   'arguments': 'void', },
 { 'return_type': 'GLuint',
   'names': ['glCreateShader'],
   'arguments': 'GLenum type', },
 { 'return_type': 'void',
   'names': ['glCullFace'],
   'arguments': 'GLenum mode', },
 { 'return_type': 'void',
   'names': ['glDeleteBuffers'],
   'known_as': 'glDeleteBuffersARB',
   'arguments': 'GLsizei n, const GLuint* buffers', },
 { 'return_type': 'void',
   'known_as': 'glDeleteFencesAPPLE',
   'versions': [{ 'name': 'glDeleteFencesAPPLE',
                  'extensions': ['GL_APPLE_fence'] }],
   'arguments': 'GLsizei n, const GLuint* fences', },
 { 'return_type': 'void',
   'names': ['glDeleteFencesNV'],
   'arguments': 'GLsizei n, const GLuint* fences', },
 { 'return_type': 'void',
   'names': ['glDeleteFramebuffersEXT', 'glDeleteFramebuffers'],
   'arguments': 'GLsizei n, const GLuint* framebuffers', },
 { 'return_type': 'void',
+  'names': ['glDeletePathsNV'],
+  'arguments': 'GLuint path, GLsizei range' },
+{ 'return_type': 'void',
   'names': ['glDeleteProgram'],
   'arguments': 'GLuint program', },
 { 'return_type': 'void',
   'versions': [{ 'name': 'glDeleteQueries' },
                { 'name': 'glDeleteQueriesARB'},
                { 'name': 'glDeleteQueriesEXT',
                  'extensions': ['GL_EXT_occlusion_query_boolean'] }],
   'arguments': 'GLsizei n, const GLuint* ids', },
 { 'return_type': 'void',
   'names': ['glDeleteRenderbuffersEXT', 'glDeleteRenderbuffers'],
@@ skipping 158 matching lines @@
   'known_as': 'glGenFencesAPPLE',
   'versions': [{ 'name': 'glGenFencesAPPLE',
                  'extensions': ['GL_APPLE_fence'] }],
   'arguments': 'GLsizei n, GLuint* fences', },
 { 'return_type': 'void',
   'names': ['glGenFencesNV'],
   'arguments': 'GLsizei n, GLuint* fences', },
 { 'return_type': 'void',
   'names': ['glGenFramebuffersEXT', 'glGenFramebuffers'],
   'arguments': 'GLsizei n, GLuint* framebuffers', },
+{ 'return_type': 'GLuint',
+  'names': ['glGenPathsNV'],
+  'arguments': 'GLsizei range' },
 { 'return_type': 'void',
   'versions': [{ 'name': 'glGenQueries' },
                { 'name': 'glGenQueriesARB', },
                { 'name' : 'glGenQueriesEXT',
                  'extensions': ['GL_EXT_occlusion_query_boolean'] }],
   'arguments': 'GLsizei n, GLuint* ids', },
 { 'return_type': 'void',
   'names': ['glGenRenderbuffersEXT', 'glGenRenderbuffers'],
   'arguments': 'GLsizei n, GLuint* renderbuffers', },
 { 'return_type': 'void',
@@ skipping 247 matching lines @@
   'versions': [{ 'name': 'glIsFenceAPPLE',
                  'extensions': ['GL_APPLE_fence'] }],
   'arguments': 'GLuint fence', },
 { 'return_type': 'GLboolean',
   'names': ['glIsFenceNV'],
   'arguments': 'GLuint fence', },
 { 'return_type': 'GLboolean',
   'names': ['glIsFramebufferEXT', 'glIsFramebuffer'],
   'arguments': 'GLuint framebuffer', },
 { 'return_type': 'GLboolean',
+  'names': ['glIsPathNV'],
+  'arguments': 'GLuint path' },
+{ 'return_type': 'GLboolean',
   'names': ['glIsProgram'],
   'arguments': 'GLuint program', },
 { 'return_type': 'GLboolean',
   'versions': [{ 'name': 'glIsQuery' },
                { 'name': 'glIsQueryARB' },
                { 'name': 'glIsQueryEXT',
                  'extensions': ['GL_EXT_occlusion_query_boolean'] }],
   'arguments': 'GLuint query', },
 { 'return_type': 'GLboolean',
   'names': ['glIsRenderbufferEXT', 'glIsRenderbuffer'],
@@ skipping 46 matching lines @@
                  'extensions': ['GL_EXT_direct_state_access',
                                 'GL_NV_path_rendering'] }],
   'arguments': 'GLenum matrixMode, const GLfloat* m' },
 { 'return_type': 'void',
   'known_as': 'glMatrixLoadIdentityEXT',
   'versions': [{ 'name': 'glMatrixLoadIdentityEXT',
                  'extensions': ['GL_EXT_direct_state_access',
                                 'GL_NV_path_rendering'] },],
   'arguments': 'GLenum matrixMode' },
 { 'return_type': 'void',
+  'names': ['glPathCommandsNV'],
+  'arguments': 'GLuint path, GLsizei numCommands, const GLubyte* commands, '
+  'GLsizei numCoords, GLenum coordType, const GLvoid* coords' },
+{ 'return_type': 'void',
+  'names': ['glPathParameterfNV'],
+  'arguments': 'GLuint path, GLenum pname, GLfloat value' },
+{ 'return_type': 'void',
+  'names': ['glPathParameteriNV'],
+  'arguments': 'GLuint path, GLenum pname, GLint value' },
+{ 'return_type': 'void',
+  'names': ['glPathStencilFuncNV'],
+  'arguments': 'GLenum func, GLint ref, GLuint mask' },
+{ 'return_type': 'void',
   'versions': [{ 'name': 'glPauseTransformFeedback' }],
   'arguments': 'void', },
 { 'return_type': 'void',
   'names': ['glPixelStorei'],
   'arguments': 'GLenum pname, GLint param', },
 { 'return_type': 'void',
   'names': ['glPointParameteri'],
   'arguments': 'GLenum pname, GLint param', },
 { 'return_type': 'void',
   'names': ['glPolygonOffset'],
@@ skipping 98 matching lines @@
         } else {
           GL_SERVICE_LOG("  " << ii << ": ---\\n" << str[ii] << "\\n---");
         }
       } else {
         GL_SERVICE_LOG("  " << ii << ": NULL");
       }
     }
   });
 """, },
 { 'return_type': 'void',
+  'names': ['glStencilFillPathNV'],
+  'arguments': 'GLuint path, GLenum fillMode, GLuint mask' },
+{ 'return_type': 'void',
   'names': ['glStencilFunc'],
   'arguments': 'GLenum func, GLint ref, GLuint mask', },
 { 'return_type': 'void',
   'names': ['glStencilFuncSeparate'],
   'arguments': 'GLenum face, GLenum func, GLint ref, GLuint mask', },
 { 'return_type': 'void',
   'names': ['glStencilMask'],
   'arguments': 'GLuint mask', },
 { 'return_type': 'void',
   'names': ['glStencilMaskSeparate'],
   'arguments': 'GLenum face, GLuint mask', },
 { 'return_type': 'void',
   'names': ['glStencilOp'],
   'arguments': 'GLenum fail, GLenum zfail, GLenum zpass', },
 { 'return_type': 'void',
   'names': ['glStencilOpSeparate'],
   'arguments': 'GLenum face, GLenum fail, GLenum zfail, GLenum zpass', },
+{ 'return_type': 'void',
+  'names': ['glStencilStrokePathNV'],
+  'arguments': 'GLuint path, GLint reference, GLuint mask' },
+{ 'return_type': 'void',
+  'names': ['glStencilThenCoverFillPathNV'],
+  'arguments': 'GLuint path, GLenum fillMode, GLuint mask, GLenum coverMode',
+  'is_optional': True, },
+{ 'return_type': 'void',
+  'names': ['glStencilThenCoverStrokePathNV'],
+  'arguments': 'GLuint path, GLint reference, GLuint mask, GLenum coverMode',
+  'is_optional': True, },
 { 'return_type': 'GLboolean',
   'known_as': 'glTestFenceAPPLE',
   'versions': [{ 'name': 'glTestFenceAPPLE',
                  'extensions': ['GL_APPLE_fence'] }],
   'arguments': 'GLuint fence', },
 { 'return_type': 'GLboolean',
   'names': ['glTestFenceNV'],
   'arguments': 'GLuint fence', },
 { 'return_type': 'void',
   'names': ['glTexImage2D'],
@@ skipping 979 matching lines @@
     first_version = True
     while i < len(func['versions']):
       version = func['versions'][i]
       cond = GetBindingCondition(version)
       if first_version:
         file.write('  if (%s) {\n  ' % cond)
       else:
         file.write('  else if (%s) {\n  ' % (cond))
 
       WriteFuncBinding(file, known_as, version['name'])
-      file.write('DCHECK(fn.%sFn);\n' % known_as)
+      if not 'is_optional' in func or not func['is_optional']:
+        file.write('DCHECK(fn.%sFn);\n' % known_as)
       file.write('}\n')
       i += 1
       first_version = False
 
   # TODO(jmadill): make more robust
   def IsClientExtensionFunc(func):
     assert len(func['versions']) > 0
     if 'client_extensions' in func['versions'][0]:
       assert len(func['versions']) == 1
       return True
@@ skipping 713 matching lines @@
                                     'gl_enums_implementation_autogen.h'),
                        'wb')
     GenerateEnumUtils(header_file, enum_header_filenames)
     header_file.close()
     ClangFormat(header_file.name)
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))