vkInvalidateMappedBufferRange => glFlushMappedBuffer

gltrace.py

        if function.name == 'glFlushMappedBufferRange':
            print '    GLvoid *map = NULL;'
            print '    _glGetBufferPointerv(target, GL_BUFFER_MAP_POINTER, &map);'
            print '    if (map && length > 0) {'
            self.emit_memcpy('(const char *)map + offset', 'length')
            print '    }'
        if function.name == 'glFlushMappedBufferRangeAPPLE':
            print '    GLvoid *map = NULL;'
            print '    _glGetBufferPointerv(target, GL_BUFFER_MAP_POINTER, &map);'
            print '    if (map && size > 0) {'
            self.emit_memcpy('(const char *)map + offset', 'size')
            print '    }'
        if function.name == 'glFlushMappedNamedBufferRangeEXT':
            print '    GLvoid *map = NULL;'
            print '    _glGetNamedBufferPointervEXT(buffer, GL_BUFFER_MAP_POINTER, &map);'
            print '    if (map && length > 0) {'
            self.emit_memcpy('(const char *)map + offset', 'length')
print '    }'

vkInvalidateMappedBufferRange.js

/*
 * Copyright 2010 The Emscripten Authors.  All rights reserved.
 * Emscripten is available under two separate licenses, the MIT license and the
 * University of Illinois/NCSA Open Source License.  Both these licenses can be
 * found in the LICENSE file.
 *
 * GL support. See http://kripken.github.io/emscripten-site/docs/porting/multimedia_and_graphics/OpenGL-support.html
 * for current status.
 */


  $emscriptenWebGLValidateMapBufferTarget: function(target) {
    switch (target) {
      case 0x8892: // GL_ARRAY_BUFFER
      case 0x8893: // GL_ELEMENT_ARRAY_BUFFER
      case 0x8F36: // GL_COPY_READ_BUFFER
      case 0x8F37: // GL_COPY_WRITE_BUFFER
      case 0x88EB: // GL_PIXEL_PACK_BUFFER
      case 0x88EC: // GL_PIXEL_UNPACK_BUFFER
      case 0x8C2A: // GL_TEXTURE_BUFFER
      case 0x8C8E: // GL_TRANSFORM_FEEDBACK_BUFFER
      case 0x8A11: // GL_UNIFORM_BUFFER
        return true;
      default:
        return false;
    }
},

glFlushMappedBufferRange: function(target, offset, length) {
    if (!emscriptenWebGLValidateMapBufferTarget(target)) {
      GL.recordError(0x0500/*GL_INVALID_ENUM*/);
      err('GL_INVALID_ENUM in glFlushMappedBufferRange');
      return;
    }

    var mapping = GL.mappedBuffers[emscriptenWebGLGetBufferBinding(target)];
    if (!mapping) {
      GL.recordError(0x0502 /* GL_INVALID_OPERATION */);
      Module.printError('buffer was never mapped in glFlushMappedBufferRange');
      return;
    }

    if (!(mapping.access & 0x10)) {
      GL.recordError(0x0502 /* GL_INVALID_OPERATION */);
      Module.printError('buffer was not mapped with GL_MAP_FLUSH_EXPLICIT_BIT in glFlushMappedBufferRange');
      return;
    }
    if (offset < 0 || length < 0 || offset + length > mapping.length) {
      GL.recordError(0x0501 /* GL_INVALID_VALUE */);
      Module.printError('invalid range in glFlushMappedBufferRange');
      return;
    }

    GLctx.bufferSubData(
      target,
      mapping.offset,
      HEAPU8.subarray(mapping.mem + offset, mapping.mem + offset + length));
},